Method for removing ash from solid carbonaceous material

A method for removing ash from a solid carbon material, which relates to the technical field of removing ash from solid carbonaceous materials; reaction conditions are mild, and ash may be removed more effectively, which may thereby reduce the amount of alkali and water used and increase the treatment amount for solid carbonaceous materials, thus reducing the difficulty and costs in recovering an alkali. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first ...

Aquadag outer conductive coating for colour kinescope and its preparation method

The graphite milk as external conducting coating of colour CRT contains graphite (25-30 Wt.%), low-temp filming agent (15-25), disperser (0.6-1.2), surfactant (0.1-0.5), oil and dirt resisting agent (0.1-4), coating aid (1-10) and pure water (30-58), and features low resistivity, good dispersity, high oil, dirt and low temp resistance, high adhesion, stable chemical properties and excellent operation nature.

Carbon reducing, sulfur reducing, iron removing and iron ore concentrate recovering method for coal ash

The invention discloses a carbon reducing, sulfur reducing, iron removing and iron ore concentrate recovering method for coal ash with unburned carbons and higher SO3 and Fe (hematite) contents. With the unburned carbons in the coal ash as reducing agent, dry coal ash raw materials (9%+/-1% of loss on ignition and 9.5%+/-1% of SO3 content) mixed beforehand are reduced and roasted for 15-30 minutes at 900 DEG C, then are quickly separated from oxygen for water quenching and cooling; the iron ore concentrate is magnetically separated by a wet low-intensity magnetic separator. Gypsum (CaSO4) in the coal ash is converted to CaS after reducing and roasting, so that the SO3 content is reduced; the hematite with weak magnetism is converted to a magnetite with strong magnetism; weak magnetic separator is adopted to separate. The carbon, Fe and SO3 contents of the treated coal ash are respectively reduced below 5.3%, 5% and 1.32%; the coal ash can be directly used in the fields such as production ...

Collector capable of automatically controlling gas separation for measuring production profile of oil well

The invention discloses a collector capable of automatically controlling gas separation for measuring a production profile of an oil well. The main working parts of the collector comprise an oil-water collecting channel (2), a gas separation outlet (3), a gas separation channel (4), a collecting umbrella (5), a gas separation inlet (6), a float switch (7), a booster spring (8) and an oil-water phase collecting inlet (9); the collector structurally comprises a gas-phase separation cavity, the gas separation channel, the float switch for controlling the gas-phase separation, and an oil-water collecting channel. By separating the gas phase under the controllable conditions with the invention, the simple two-phase flow substitutes for the complex tri-phase flow, therefore, the measurement results are more accurate.

Stratification oil production logging instrument of low-yield liquid oil well

The invention relates to a stratification oil production logging instrument of a low-yield liquid oil well, mainly solving the problem that the existing logging instruments can not overcome degassinginfluence, causing bigger deviation of a measurement result. The invention is characterized in that a circuit barrel (1) is connected with a working barrel (2), a lower end-reducing current collectorcenter cylinder (3), an inner barrel (7), a support bar (4), a current collector drive device (5), a turbine flowmeter (6), a current collecting umbrella (9), a float switch (15), a booster spring (16), an oil-water interface detection array electrode (17) and a gas phase distributary channel (8), wherein the working barrel (2) is provided with an oil-water phase current collecting outlet (12) anda gas phase current collecting outlet (13), and the current collector center cylinder (3) is provided with a gas phase separating inlet (14) and an oil-water phase current collecting inlet (18). Thestratification ...

Fine-tuning optical lens skin detector

The invention provides a fine-tuning optical lens skin detector which comprises a main body and a lens assembly installed on the main body, the lens assembly comprises a lens support, a lens and an adjusting part, and the adjusting part can drive the lens to do telescopic motion in the lens support. According to the fine-tuning optical lens skin detector, the adjusting part is arranged, so that the lens is driven to do telescopic motion in the lens support, then the distance between the lens and the human skin is adjusted to achieve the optimal detection state so as to adapt to people with different skin states, the applicability and reliability are higher, and the user experience is improved.

Grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method

The invention discloses a grounding grid NiP-DLC composite corrosion resisting protection coating and preparing method. The coating comprises an NiP alloy coating covering the grounding grid material and a pure carbon type diamond coating covering the NiP alloy coating, wherein the NiP alloy coating is a corrosion resisting coating, and the pure carbon type diamond coating is a high hardness oxidation resistant coating. The coating preparing method comprises the steps that the NiP alloy coating is deposited on the surface of the grounding grid material in a chemical plating mode, and the pure carbon type diamond coating is deposited on the surface of the NiP alloy coating through an anode layer ion source in a vacuum cavity. The coating is more superior in abrasion resistance, corrosion resistance and oxidation resistance, and friendly to the environment. The method is simple in technology and high in deposition efficiency, and the coating is suitable for being produced on a large scale ...

Fish classification method, system and equipment based on reinforcement learning and medium

The invention discloses a fish classification method, system and device based on reinforcement learning and a medium, and relates to the field of fish classification. And training the baseline network model by using the sample data set, pruning the trained baseline network model to obtain the fish classification model, and classifying the to-be-classified fish image by using the fish classification model to obtain the fish type, thereby improving the classification accuracy and efficiency.

Wheel brow height measuring device and method based on monocular vision

The invention belongs to the technical field of automobile detection, and particularly relates to a wheel eyebrow height measuring device and method based on monocular vision, the wheel eyebrow height measuring device comprises a support, a camera and two lasers are arranged on the support, and the two lasers are arranged on the two sides of the camera. The wheel eyebrow measuring device is installed at a fixed position, multi-position movement is not needed during measurement, visual measurement of the height of the wheel eyebrow can be completed only through one camera, the complexity and picture data requirements of measuring equipment are greatly reduced, and the device has the advantages of being low in cost, simple in calibration, simple in algorithm, high in measuring speed and the like; the wheel eyebrow height measuring speed and precision are greatly improved, the equipment cost is low, and later maintenance is convenient.

Numerical control unit, microwave single chip and antenna unit of satellite distributed configuration

The invention is suitable for the technical field of silicon-based radio frequency and millimeter wave integrated circuits, and provides a satellite distributed configuration numerical control unit, a microwave monolithic and an antenna unit, which comprise a decoupling capacitor module, a main control module and a distributed satellite module, a positive electrode of the decoupling capacitor module and a power supply pin of the main control module are connected with a power supply pin of the numerical control unit, and a negative electrode of the decoupling capacitor module and a grounding pin of the main control module are connected with a grounding pin of the numerical control unit; the distributed satellite module comprises a first satellite submodule, a second satellite submodule, a third satellite submodule and a fourth satellite submodule; the connection mode of the first satellite submodule and the main control module, the connection mode of the second satellite submodule and the ...

Vehicle top end rain height adjusting equipment for automobile rain room

The vehicle top end rain height adjusting equipment comprises an equipment structure main frame, the equipment structure main frame is arranged on the outer side of a rain room body, a lead screw lifting seat is arranged at the top end of the equipment structure main frame, and a lifting outer cylinder is arranged at the top end of the lead screw lifting seat; a lifting module is arranged on the inner side of the lead screw lifting seat, a spraying moving frame is arranged at the bottom end of the lifting module, a spraying water pipe is arranged on the spraying moving frame, the lifting module comprises a lifting lead screw, and connecting protrusions are arranged on the upper side and the lower side of the lifting lead screw. And connecting penetrating rods fixed to the connecting protrusions are further arranged on the inner sides of the lifting lead screws in a penetrating mode, and anti-disengaging assemblies are arranged at the top ends and the bottom ends of the lifting lead screws ...

Capsule with blood sugar reducing function and preparation method thereof

Verfahren zur Entfernung von Asche in den festen Kohlenstoffhaltigen Materialien

Diese Erfindung betrifft ein Verfahren zur Entfernung von Asche in den festen kohlenstoffhaltigen Materialien und bezieht sich auf das technische Gebiet der Entfernung von Asche aus den festen kohlenstoffhaltigen Materialien. Die Reaktionsbedingungen sind mild und die Asche kann in einer effizienteren Weise entfernt werden, wodurch die verwendete Menge an Alkali und Wasser reduziert und die Bearbeitungskapazität der festen kohlenstoffhaltigen Materialien erhöht werden können, wodurch die Schwierigkeit und die Kosten der Rückgewinnung von Alkali gesenkt werden. Das Verfahren zur Entfernung von Asche umfasst:S1) Mischen eines alkalischen subschmelzenden Salzmediums und eines zu behandelnden festen kohlenstoffhaltigen Materials, Erhitzen, so dass Alkali und Asche des zu behandelnden festen kohlenstoffhaltigen Materials in dem alkalischen subschmelzenden Salzmedium reagieren, dann Durchführen einer Fest-Flüssig-Trennung der gemischten Aufschlämmung, die aus der Reaktion erzeugt, um ein erstes ...

Method for measuring injection allocation well casing external flow through ultrasonic Doppler-correlation method

The invention relates to a method for measuring injection allocation well casing external flow through an ultrasonic Doppler-correlation method. The method aims to solve the problems that through an existing method for measuring flow of fluid between an injection allocation well oil pipe and a casing pipe, radioactive injury to constructors is caused and cost is high. The method is characterized by including the following steps that firstly, an instrument is placed downwards above an injection allocation water nozzle on a measurement layer, an upstream ultrasonic probe and a downstream ultrasonic probe simultaneously emit continuous ultrasonic waves into a well, and reflective liquid in a reflective liquid bin is released into the well under power drive; the instrument is moved to a measurement point, when reflective liquid drops flow through a region of the ultrasonic waves emitted by the ultrasonic probes, sound waves are reflected on the surfaces of the reflective liquid drops, and part ...

Device and method for measuring expanded-base diameter of cast-in-place pile

The invention discloses a device and method for measuring the expanded-base diameter of a cast-in-place pile, the device comprises a shell and a pressure gauge arranged outside the shell, an air bag and a guide pipe communicated with the air bag are arranged in the shell, and the lower end of the guide pipe is communicated with a first transverse pipe and a second transverse pipe; the first transverse pipe and the second transverse pipe penetrate through the shell and then are communicated with telescopic rods respectively, the first transverse pipe and the second transverse pipe are distributed in a straight line, the upper end of the air bag is connected with a pressing rod, and the pressure gauge is connected with the guide pipe through a pipeline. And recording the reading of the pressure gauge and the stroke of the pressure rod when the pressure of the pressure gauge is accelerated, and performing ground remeasurement according to the data or calculating the expanded base diameter ...

Inclined rail climbing curtain wall glass replacing system and construction method thereof

The invention relates to a building body glass curtain wall construction technology, and comprises an inclined rail climbing curtain wall glass replacement system, a glass hoisting system comprises a plurality of glass lifting supports which are distributed along the eave wall of a building body at equal intervals, and a set of glass lifting device is further included; the suspended working platform system comprises an electric suspended working platform and an inclined rail crawling system, the inclined rail crawling system comprises an inclined rail assembly extending along the eave wall of the building body and an electric rail climbing device assembly, and the electric suspended working platform is connected with the electric rail climbing device assembly through a stay wire II of an electric cable assembly. A worker sits on an electric hanging boat to install the glass lifting device on a lifting support above a target window, then old glass and new glass are hoisted and transferred ...

Vehicle auxiliary wheel rotation detection device and use method

A vehicle auxiliary wheel rotation detection device disclosed by the present invention comprises a left wheel fixing frame and a right wheel fixing frame which are respectively used for placing a left tire and a right tire, the top of the left wheel fixing frame and the top of the right wheel fixing frame are respectively provided with a rolling plate chain piece for controlling a wheel body to rotate, and the top of each rolling plate chain piece is provided with a plane in contact with the wheel body. The wheel body is controlled to be detected at the same surface height, and a wheel side opposite assembly opposite to one side of the wheel body is arranged at the top of the rolling plate chain piece; by means of the constructed plane, it is always guaranteed that front and rear wheels are detected at the same height, a normal vehicle running state is simulated, normal stress points on a road are simulated, double-axle and four-wheel-drive detected vehicles are detected in a free state ...

Borehole transient electromagnetic detection method for cast-in-place pile reinforcement cage length

The invention provides a borehole transient electromagnetic detection method for cast-in-place pile reinforcement cage length. The method includes the steps that a drill hole parallel to the center line of a pile body is formed in a cast-in-place pile or the periphery of the cast-in-place pile; an instrument for detection is well installed and debugged, a borehole probe of the instrument is placed into the drill hole and connected with a host; the host is started, point distances are well selected within the range of 0.20-0.50m to be used as detection points of different depths, and the induced electromotive force of a secondary electromagnetic field is sequentially measured from top to bottom or from bottom to top; measured data is input into a computer from the host to be processed; a plurality of induced electromotive force-depth curve cross-section diagrams are formed by the data processed through software, accordingly the position of the top end of a reinforcement cage, the position ...

Soxhlet purification device and purification method of coarse crystal aluminum chloride

The invention relates to the technical field of coarse crystal aluminum chloride purification, and discloses a Soxhlet purification device and a coarse crystal aluminum chloride purification method. The Soxhlet purification device comprises a distillation kettle (1), a purification tank (2) and an elastic air bag (3) which are connected in sequence, and a hydrochloric acid online concentration meter (4) connected with the purification tank (2), wherein the purification tank (2) is provided with a gas guide pipe (21) and a siphon pipe (22), and the gas guide pipe (21) is in an inverted U shape and is arranged in the purification tank (2). The method for purifying the coarse crystalline aluminum chloride provided by the invention is high in automation degree, simple to operate, high in purification efficiency, capable of obtaining an aluminum chloride product with a higher purity grade, and suitable for industrial popularization.

Treatment method of high-concentration photovoltaic organic wastewater

The invention discloses a treatment method of high-concentration photovoltaic organic wastewater, which comprises the following steps: adding a pH regulator into the high-concentration photovoltaic organic wastewater to regulate the pH of the high-concentration photovoltaic organic wastewater, then adding a flocculant, stirring for reaction, and standing to obtain supernate; and carrying out evaporative crystallization on the supernatant to finish the treatment of the high-concentration photovoltaic organic wastewater. According to the treatment method, the high-concentration photovoltaic organic wastewater can be converted from difficult biochemical treatment to easy biochemical treatment, the B/C ratio is increased, meanwhile, most COD in the wastewater can be removed, and the COD removal rate can reach 95% or above. And finally discharging after reaching the standard. And the treatment method can reach the treatment standard only through simple flocculation precipitation reaction and ...

Explosive sealed valve

The utility model relates to an explosive sealed valve which is used for logging instruments of oil field under the well under the environment of more than 0.5 MPa liquid pressure. The utility model solves the problems of complicated structure and inconvenient use of the existing sealed valve. The utility model is characterized in that the sealed valve is opened and closed by an explosive lock pin and a return spring. The utility model has the advantages of simple structure and convenient use, and the utility model can be used under the environment of more than 0.5MPa liquid pressure under the well without influencing by the variation of the liquid pressure.

Molded silicon-calcium-potassium-magnesium fertilizer as well as preparation method and application thereof

The invention relates to the field of fertilizers, and discloses a formed silicon-calcium-potassium-magnesium fertilizer and a preparation method and application thereof.The method comprises the steps that 1, white mud, calcium hydroxide and talcum powder are evenly mixed in a pelletizer at the first rotating speed, and a first part of potassium source solution is added in the even mixing process; (2) the mixed material in the step (1) continues to be subjected to granulation forming in the granulator to obtain master batches, the granulation process is carried out at a second rotating speed, and a second part of the potassium source solution is sprayed in the granulation process; (3) the granulation process is carried out at a third rotating speed, and the master batch grows up; wherein the first rotating speed is lt; a third rotation speed lt; a second rotating speed. The invention provides the molded silicon-calcium-potassium-magnesium fertilizer prepared by the preparation method provided ...

Efficient energy-saving rotary reduction furnace

The invention discloses an efficient energy-saving rotary reduction furnace comprising two basic units, namely an outer cylinder and a core. The outer cylinder which is fixed is filled with insulating material. Two ends of the core are combined to the outer cylinder through heat-resistant sealing bearings. The core and the outer cylinder form a closed cavity for reduction roasting. A power and drive device drives the core to rotate. Three temperature control probe sets are disposed on the outer cylinder at equal intervals. The upper middle of the outer cylinder is provided with an atmosphere adjusting hole. The top of a furnace head is provided with a tail gas outlet, and the bottom of the furnace head is provided with a discharge hole. The top of a furnace tail is provided with a feed hopper. The core is composed of a resistant steel pipe and spiral wing plates welded on the resistant steel pipe. The core is provided with an inner heating area. The efficient energy-saving rotary reduction ...

Medicine for curing waist and leg pain and its preparing method

The invention relates to a pharmaceutical composition for treating waist and leg pains and process for preparation, wherein the medicament is prepared from wood louse, frankincense, myrrh, native copper, safflower, drynaria, rhubarb horsetails, borax and Chinese angelica root through steps of disintegrating, concentrating, granulating, and making capsule with pharmaceutically acceptable carriers or adjuvant.

Plywood with syllable -dividing, fire -retardant function

The utility model discloses a plywood with syllable -dividing, fire -retardant function, the device comprises a backboar, the fire -retardant layer of top fixedly connected with of backplate to one side fixedly connected with owner's substrate board of keeping away from the backplate on fire -retardant layer, the vice substrate board of the equal fixedly connected with in both sides at main substrate board top to the top fixedly connected with deadening felt of vice substrate board, fixedly connected with support column between main substrate board and the deadening felt to the deadening feltis kept away from one side of support column and is followed supreme panel of fixedly connected with in proper order and paint layer down, the utility model relates to a plywood technical field. Thisplywood with syllable -dividing, fire -retardant function has increased better functionally, has accorded with green sustainable development's theory, very big improvement the syllable -dividing effect of ...

Double-screw three-layer expansion plate device

The invention belongs to the technical field of vehicle detection, and particularly relates to a double-lead-screw three-layer telescopic plate device which comprises a front telescopic plate, a middle telescopic plate and a rear telescopic plate and further comprises a telescopic driving assembly and two guide rails arranged in parallel, and the rear telescopic plate and the middle telescopic plate are installed on the guide rails in a sliding mode. The telescopic driving assembly comprises a power mechanism, a first lead screw and a second lead screw, the power mechanism is in transmission connection with the first lead screw, the second lead screw is connected with the first lead screw through a coupler, and the rear telescopic plate is fixedly connected with a lead screw nut seat of the first lead screw; the middle telescopic plate is fixedly connected with a lead screw nut seat of the second lead screw, and the lead of the first lead screw is larger than that of the second lead screw ...

Medicament for treating rheumatism wind-dampness pain and preparation thereof

The present invention discloses a medicine for curing rheumatism and arthralgia pain and a preparation method thereof. The medicine takes nux vomica powder, rhizoma atractylodis, peach kernel, prepared mastic gum, prepared myrrh, obscured homalomena rhizome, anisetree bark, etc. as raw materials. According to different features and effective ingredients, the raw materials are respectively smashed, extracted, condensed and granulated which can be combined with medically acceptable carrier or auxiliary material and made into pill, capsule and granule. The medicine with advanced process and obvious curing effect is obviously superior to the prior rheumatism and arthritis pills, which is an ideal medicine for curing rheumatism and arthralgia pain, limbs pain, rheumatoid arthritis and other diseases.

Orthogonal signal generator and communication equipment

The invention provides an orthogonal signal generator and communication equipment. The orthogonal signal generator comprises four transmission lines, a first resistor, a second resistor and an RC-CR network, the first end of the first transmission line is connected with the positive input end of the orthogonal signal generator, and the second end of the first transmission line is connected with the first input end of the RC-CR network; the first end of the second transmission line is grounded through the first resistor, and the second end of the second transmission line is connected with the second input end of the RC-CR network; the first end of the third transmission line is grounded through the second resistor, and the second end of the third transmission line is connected with the third input end of the RC-CR network; the first end of the fourth transmission line is connected with the negative input end of the orthogonal signal generator, and the second end of the fourth transmission ...

Underground flow collection type ultrasonic wave Doppler flow-moisture content meter

The invention relates to an underground flow collection type ultrasonic wave Doppler flow-moisture content meter. The problem that the fluid flow cannot be measured by the existing flowmeter under two phase and three phase conditions is mainly solved. The underground flow collection type ultrasonic wave Doppler flow-moisture content meter is characterized in that an ultrasonic probe (1) is mounted on the upper end of a liquid outlet (4); the end faces of the ultrasonic probe (1) are respectively a receiving face (2) and an emitting face (3); the axial included angle a between the emitting face and the ultrasonic probe (1) is 70 degrees and 80 degrees; the axial included angle b between the receiving face and the ultrasonic probe (1) is 80 degrees and 90 degrees. The underground flow collection type ultrasonic wave Doppler flow-moisture content meter is capable of measuring the fluid flow under the two phase and three phase conditions.

Method for in-situ synthesis of composite TiC-DLC coating on surface of titanium

The invention discloses a method for in-situ synthesis of a composite TiC-DLC coating on the surface of titanium. The method comprises the following steps of placing a Ti target in a coating chamber and introducing a hydrocarbon gas, vacuumizing the film plating chamber and maintaining the temperature of the coating chamber, evaporating Ti ions out from the Ti target by virtue of arc ion plating, and ionizing the hydrocarbon gas by virtue of arc discharge to form the composite TiC-doped DLC coating on the Ti target. According to the method, by adopting the in-situ synthesis technology, the composite coating is formed by direction chemical reaction on the surface of the Ti target material, the uniformity of the composition of the composite coating and the binding force of the coating can be significantly improved and the method has the advantages of simple preparation process, low cost and high efficiency and has good application prospects in the preparation of the DLC coating.

Septicemia treatment system based on two-channel reinforcement learning

The invention relates to a septicemia treatment system based on dual-channel reinforcement learning, and belongs to the technical field of biomedicine. The system combines a full-connection neural network and a long short-term memory neural network, the full-connection neural network is used for capturing the current physiological state of a patient, and the long short-term memory neural network is used for representing the treatment history of the patient, including states, actions and rewards; the system comprises a Markov decision module, a dual-channel data flow module, a deep reinforcement learning module and an offline strategy evaluation module. The Markov decision-making module constructs the whole disease treatment process into a Markov decision-making process, and selects a historical treatment medical record of a patient to construct an input database of a reinforcement learning model, including a state value, an action value and a reward function. Compared with the prior art ...

Aquadag outer conductive coating for color kinescope and its preparation method

Method for removing ash from solid carbonaceous material

A method for removing ash from a solid carbon material: Reaction conditions are mild, and ash may be removed more effectively. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first solid product, and performing solid-liquid separation again to obtain a second solid product and an acid cleaning solution.

Method for removing ash from solid carbonaceous material

A method for removing ash from a solid carbon material, which relates to the technical field of removing ash from solid carbonaceous materials; reaction conditions are mild, and ash may be removed more effectively, which may thereby reduce the amount of alkali and water used and increase the treatment amount for solid carbonaceous materials, thus reducing the difficulty and costs in recovering an alkali. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first solid product, and performing solid-liquid separation again to obtain a second solid product and an acid cleaning solution. Each embodiment is used for removing ash from a solid carbonaceous material.

Method for removing ash from solid carbonaceous material

A method for removing ash from a solid carbon material: Reaction conditions are mild, and ash may be removed more effectively. The ash removing method comprises: S1) mixing an alkaline sub-molten salt medium and a solid carbonaceous material to be treated, heating so that alkali and ash in the solid carbonaceous material to be treated react in the alkaline sub-molten salt medium, and performing solid-liquid separation on a mixed slurry resulting from the reaction to obtain a first solid product and an alkali treatment solution, wherein in the alkaline sub-molten salt medium, the mass fraction of the alkali is greater than or equal to 50%; S2) using an acid solution to perform acid cleaning treatment on the first solid product, and performing solid-liquid separation again to obtain a second solid product and an acid cleaning solution.