Processing method of lower base plate of vehicle seat back

The invention discloses a processing method of a lower base plate of a vehicle seat back. The processing method comprises the steps of cutting material, pre-molding, trimming and punching, coiling a circular edge into the U shape, molding a U-shaped whole body, side punching, coiling a circle, reshaping, punching a flanging hole, profiling, punching and squeezing a rivet for connecting and molding, wherein the step of coiling the circular edge into the U shape is that the coiled circular edge of the trimmed and punched material plate is pressed into a plurality of U-shaped interphase corrugated shapes; and the step of the squeezing the rivet for connecting and molding is that the material plate obtained after the last step is used for the rivet squeezing and connection with the corrugatedcoiled circular edges by a special rivet squeezing tool. The processing method of the invention increases the material strength of the coiled circular edge due to the step of coiling the circular edge into ...

Flue gas-based combined desulfuration and denitration method and special device for method

The invention discloses a flue gas-based desulduratoin and denitration method and a special device for the flue gas-based desulduratoin and denitration method. The special device comprises a denitration reactor body and a desulphurization reactor body, wherein the side wall of the desulphurization reactor body is provided with a flue inlet; the desulphurization reactor body and the denitration reactor body are communicated in parallel; the volume of the denitration reactor body is 1-2 times that of the desulphurization reactor body; the communicating position of the desulphurization reactor body and the denitration reactor body is provided with a device for spraying NH3; the top of the denitration reactor body is provided with a denitration reactor inlet for active coke; the bottom of thedenitration reactor is provided with a denitration reactor outlet for the active coke; the top of the desulphurization reactor is provided with a desulphurization reactor inlet for the active coke; the ...

Coal-based carbon molecular sieve and preparation method thereof

The invention discloses a coal-based carbon molecular sieve and a preparation method thereof. The preparation method comprises the following steps: 1) uniformly mixing soluble compounds, coal raw materials and binders, pressing and drying to obtain the dried mixture; 2) charring the dried mixture in an inert atmosphere to obtain the chared mixture; 3) performing activating reaction on the chared mixture by using a gas mixture consisting of water vapor and carbon dioxide or the water vapor to obtain the activated mixture; and 4) performing pore conditioning on the activated mixture by using hydrocarbons capable of being decomposed to generate carbon element as a pore conditioner to obtain the coal-based carbon molecular sieve. The method for preparing the coal-based carbon molecular sieve has rich source of preparation raw materials and low cost; and the obtained molecular sieve has better performance of absorbing methane and separating nitrogen from methane and nitrogen from carbon dioxide ...

Process for producing active carbon

The invention discloses a method for preparing active carbon. The method for preparing the active carbon comprises the following steps: 1) carbonizing crushed and dried tobacco rods to obtain carbonized products; and 2) physically activating the carbonized products to obtain the active carbon. The active carbon prepared by the method has good adsorptivity and low content of harmful substances, and can be used for sewage treatment and decolorization of chemical products, foods and medicaments because various indexes of the active carbon accord with the national standard. In addition, the method utilizes the tobacco rods as a raw material, solves the problems of resource waste and environmental pollution due to the fact that the tobacco rods are discarded and burnt, and is of great significance.

Activated coke and preparation method and application thereof

The invention discloses an activated coke and a preparation method and an application thereof. The reaction device of the present activated coke desulfuration by dry process is in the manner of cross flow moving bed, so the special activated coke for desulfuration is required to have good desulfuration performance, high strength and burning point, better antioxygenic property, and also increasingly higher requirements for economical efficiency. The preparation method of the activated coke in the invention includes the following steps: 1) coal material granules are kneaded and formed; the coal material granules are composed of 6 to 8 parts of brown coal and 2 to 4 parts of anthracite by weight; 2) carbonizing treatment is carried out on the products in the step 1) so as to obtain carbonized processing products; 3) activating treatment is carried out on the carbonized processing products by using water vapor activation processing method so as to obtain activated coke. The invention also discloses ...

Coal-based carbon molecular sieve and preparation method thereof

The invention discloses a coal-based carbon molecular sieve and a preparation method thereof. The preparation method comprises the following steps: 1) uniformly mixing soluble compounds, coal raw materials and binders, pressing and drying to obtain the dried mixture; 2) charring the dried mixture in an inert atmosphere to obtain the chared mixture; 3) performing activating reaction on the chared mixture by using a gas mixture consisting of water vapor and carbon dioxide or the water vapor to obtain the activated mixture; and 4) performing pore conditioning on the activated mixture by using hydrocarbons capable of being decomposed to generate carbon element as a pore conditioner to obtain the coal-based carbon molecular sieve. The method for preparing the coal-based carbon molecular sieve has rich source of preparation raw materials and low cost; and the obtained molecular sieve has better performance of absorbing methane and separating nitrogen from methane and nitrogen from carbon dioxide ...

Activated coke and preparation method and application thereof

The invention discloses an activated coke and a preparation method and an application thereof. The reaction device of the present activated coke desulfuration by dry process is in the manner of cross flow moving bed, so the special activated coke for desulfuration is required to have good desulfuration performance, high strength and burning point, better antioxygenic property, and also increasingly higher requirements for economical efficiency. The preparation method of the activated coke in the invention includes the following steps: 1) coal material granules are kneaded and formed; the coalmaterial granules are composed of 6 to 8 parts of brown coal and 2 to 4 parts of anthracite by weight; 2) carbonizing treatment is carried out on the products in the step 1) so as to obtain carbonized processing products; 3) activating treatment is carried out on the carbonized processing products by using water vapor activation processing method so as to obtain activated coke. The invention alsodiscloses ...

Method and device for monitoring and alarming residual current, and detection controller

The invention provides a method and a device for monitoring and alarming residual current, and a detection controller. The method comprises the following steps of: acquiring a three-phase load current value and a residual current value of a monitored loop; generating and storing the residual current relative value of each acquisition time point according to the acquired load current value and residual current value; performing statistical analysis on a plurality of residual current relative values in a preset time interval, and generating and storing the statistical parameters of the plurality of residual current relative values; generating an alarm threshold value of a monitoring time point according to the residual current relative values and the statistical parameters which are stored before the monitoring time point; and monitoring and alarming the residual current of the monitored loop according to the generated alarm threshold value. By the method and the device for monitoring and ...

Method for preparing desulphurizing activated coke

The invention discloses a method for preparing desulphurizing activated coke. The method for preparing activated coke provided by the invention uses anthracite as initial material to prepare activated coke; activation step is included in the preparation process; the activation step uses steam activation method, the activation temperature is 800 to 850 DEG C, and the time lasts for 30 to 50 minutes. The activated coke obtained by using the method in the invention has great bulk density, good intensity and comparatively good desulphurizing effect, which is a very ideal activated coke product special for desulphurizing. Moreover, the activation coke prepared by using the method in the invention has very high activation yield of product that is greater than 85%, and has great practical value and economic effect.

Fixed bed-fluidized bed coupled gasification method and apparatus

The invention relates to a method and a device for coupling gasification of a fixed bed and a fluid bed, wherein the method comprises the following steps: 1) connecting the fluidized bed gasifier with the top of a fixed bed gasifier through a hollow throat; 2) adding a gasification raw material with the particle size of between 10 and 50 millimeters to the fixed bed gasifier from the upper part of the fixed bed gasifier, and inputting a gasification agent to the fixed bed gasifier from the lower part of the fixed bed gasifier simultaneously; 3) raising coal gas generated through gasification reaction and introducing the coal gas into the fluidized bed gasifier through the hollow throat; 4) adding the gasification raw material with the particle size of less than 10 millimeters to the fluidized bed gasifier from a dense phase zone of the fluidized bed gasifier, and inputting water vapor and pure oxygen or enriched oxygen to the fluidized bed gasifier from the lower part thereof simultaneously ...

Device and method for spinning core-spun yarn

The invention relates to a core spun yarn device and the preparing method. The device comprises three roller extension devices or four roller extension devices. The invention is characterized in thatthe front part of the front roller of the extension device is provided with a super front roller; the super front roller is provided with a super front plastic revolve with a round direction groove; the super front roller and the super front plastic revolve forms the super front plier which is arranged on the same horizontal plane of the extension plier; the distance between the super front plierand the extension plier can be adjusted; a strip positioning device is arranged between the front roller and the super front roller; the positioning device is provided with two grooves which are parallel arranged on the fixed pole; the fixed pole is arranged on the roller base; the installationsite of the positioning device makes the soleplate of the groove in the same horizontal plane with the extension ...

Device and method for spinning core-spun yarn

The invention relates to a core spun yarn device and the preparing method. The device comprises three roller extension devices or four roller extension devices. The invention is characterized in that the front part of the front roller of the extension device is provided with a super front roller; the super front roller is provided with a super front plastic revolve with a round direction groove; the super front roller and the super front plastic revolve forms the super front plier which is arranged on the same horizontal plane of the extension plier; the distance between the super front plier and the extension plier can be adjusted; a strip positioning device is arranged between the front roller and the super front roller; the positioning device is provided with two grooves which are parallel arranged on the fixed pole; the fixed pole is arranged on the roller base; the installationsite of the positioning device makes the soleplate of the groove in the same horizontal plane with the extension ...

Method for joint desulfurization and denitration of flue gas and special device thereof

The invention discloses a method for joint desulfurization and denitration of flue gas and a special device thereof. The device comprises a denitration reactor body and a desulfurization reactor body which is provided with a flue gas inlet on a side wall, wherein the denitration reactor body and the desulfurization reactor body are thoroughly communicated; the side walls of the denitration reactor body and the desulfurization reactor body are provided with a pipeline which ensures that the denitration reactor body and the desulfurization reactor body are communicated; the volume of the denitration reactor body is 1-2 times that of the desulfurization reactor body; the pipeline is internally provided with an NH3 spraying device, and a denitration reactor is also internally provided with anNH3 spraying device; the side wall of the denitration reactor is provided with a flue gas outlet; an active coke inlet is arranged at the top of the denitration reactor, and an active coke outlet is arranged ...

Method for preparing desulphurizing activated coke

The invention discloses a method for preparing desulphurizing activated coke. The method for preparing activated coke provided by the invention uses anthracite as initial material to prepare activated coke; activation step is included in the preparation process; the activation step uses steam activation method, the activation temperature is 800 to 850 DEG C, and the time lasts for 30 to 50 minutes. The activated coke obtained by using the method in the invention has great bulk density, good intensity and comparatively good desulphurizing effect, which is a very ideal activated coke product special for desulphurizing. Moreover, the activation coke prepared by using the method in the invention has very high activation yield of product that is greater than 85%, and has great practical value and economic effect.

Fixed bed coal seam gas non-catalytic deoxidization method and device

The invention discloses a fixed bed coal seam gas non-catalytic deoxidization method and a fixed bed coal seam gas non-catalytic deoxidization device. The device comprises a fixed bed coal seam gas deoxidization device body including a furnace body (1), wherein the side wall of the furnace body (1) is provided with a water jacket (2) enclosing the side wall of the furnace body; the upper part of the water jacket (2) is connected with an air inlet of a steam pocket (23) through a pipeline; and a water inlet pipe on the lower part of the water jacket is connected with a water outlet of the steam pocket (23). The device deoxidizes the coal seam gas, can effectively control the deoxidization temperature and reduce the oxygen content in the coal seam gas to less than 0.5 percent, and maximallyreduces methane decomposition to make the methane loss less than 5 percent.

Method for deoxidizing coal bed gas and separating methane by concentration

The invention discloses a method for deoxidizing coal bed gas and separating methane by concentration. By using the method, the coal bed gas having 20 to 50 percent of CH4 can be deoxidized, and the requirement on the oxygen content in raw material gas is low, so that the raw material gas can be deoxidized when the oxygen content is 10.6 to 15 percent, and the times of circulated deoxidization can be obviously reduced compared with that of the conventional method. Therefore, energy consumption and production cost can be lowered, deoxidization time can be shortened, and production efficiency can be further improved. The method is characterized by wide application range, low investment consumption, complete and fast deoxidization, and good application prospect in the field of coal bed gas deoxidization. The concentration of the methane in the coal bed gas can be improved from 20 to 50 percent in the raw material gas to 80 to 90 percent by the method. CH4 concentration, decarbonization and ...

Process for producing active carbon for decolorization

The invention discloses a method for preparing active carbon for decolorization. The method for preparing the active carbon comprises the following steps: 1) crushing tobacco rods, and performing press forming and drying on the crushed tobacco rods; 2) carbonizing the tobacco rods subjected to crushing, press forming and drying to obtain carbonized products; and 3) physically activating the carbonized products to obtain the active carbon. The active carbon prepared by the method has good adsorptivity and low content of harmful substances, and can be used for the decolorization of chemical products, foods and medicaments because various indexes of the active carbon accord with the national standard. In addition, the method utilizes the tobacco rods as a raw material, solves the problems of resource waste and environmental pollution due to the fact that the tobacco rods are discarded and burnt, and is of great significance.

Sulfur, nitreand mercury removing active carbon and preparation method thereof

The invention provides a sulfur, nitre and mercury removing active carbon and a preparation method thereof. The preparation method of the sulfur, nitre and mercury removing active carbon comprises the following steps of: 1, mediating coal powder, extruding and forming into particles; 2, carbonizing the particles to obtain a carbonized product; and 3, activating the carbonized product by using a mixed gas of steam and ammonia to obtain the sulfur, nitre and mercury removing active carbon. The sulfur, nitre and mercury removing active carbon prepared by using the method can be used for singly removing sulfur, nitre and mercury, and also used for integrally removing sulfur, nitre and mercury.

Forming and machining method for vehicle purifier shell

Fixed bed-fluidized bed serially connected gasification method and apparatus

The invention relates to a method and a device for gasification, in particular to the method and the device for serial gasification of a fixed bed and a fluidized bed, wherein the method comprises the following steps: 1) feeding a gasification raw material with the particle size of between 13 and 50 millimeters and a gasification agent to a fixed bed gasifier to perform gasification reaction so as to generate coal gas and ash content, discharging the ash content from an ash discharging opening of the fixed bed, and introducing the coal gas to the lower part of a dense phase zone of a fluidized bed gasifier; 2) feeding a thin particle shapeed coal gasification raw material with the particle size of between 0.5 and 8 millimeters and the gasification agent into a fluidized bed gasifier to perform gasification reaction with the vertically raising coal gas so as to generate the coal and the ash content, discharging the ash content from the ash discharging opening of the fluidized bed, and introducing ...

Method for concentrating and separating methane in deoxidized coal bed gas

The invention discloses a method for concentrating and separating methane in deoxidized coal bed gas. The method comprises the following steps of: 1) compressing the raw material coal bed gas with oxygen content of no more than 1 volume percent to obtain the compressed coal bed gas; 2) adsorbing the compressed coal bed gas by using a carbon molecular sieve to obtain the adsorbed coal bed gas; and3) performing at least two-stage concentration and separation on the adsorbed coal bed gas obtained in the step 2) by using a pressure swing adsorption device to obtain the concentrated coal bed gas so as to finish concentration and separation of the methane in the deoxidized coal bed gas. By the method, the methane concentration of the coal bed gas is increased from 20-80 percent to 80-90 percent. In the method, only one carbon molecular sieve is used, and then the aims of concentrating CH4, decarbonizing and denitrifying can be fulfilled; and the concentration and separation efficiency is increased ...

Processing method of lower base plate of vehicle seat back

The invention discloses a processing method of a lower base plate of a vehicle seat back. The processing method comprises the steps of cutting material, pre-molding, trimming and punching, coiling a circular edge into the U shape, molding a U-shaped whole body, side punching, coiling a circle, reshaping, punching a flanging hole, profiling, punching and squeezing a rivet for connecting and molding, wherein the step of coiling the circular edge into the U shape is that the coiled circular edge of the trimmed and punched material plate is pressed into a plurality of U-shaped interphase corrugated shapes; and the step of the squeezing the rivet for connecting and molding is that the material plate obtained after the last step is used for the rivet squeezing and connection with the corrugated coiled circular edges by a special rivet squeezing tool. The processing method of the invention increases the material strength of the coiled circular edge due to the step of coiling the circular edge ...