Synthesis process of bisphenol acid type water soluble phenol resin

The invention relates to a synthesis technology of diphenolic acid water soluble phenol resin, comprising the steps of adding basic catalyst and diphenolic acid in a reactor in turn, uniformly stirring, heating to 40 to 50 DEG Cdegrees centigrade, slowly dripping formaldehyde aqueous solution when stirring, reacting for 2 to 4 hours at 50 to 80 degrees centigrade DEG C to obtain the diphenolic acid water soluble phenol resin. The mole ratio of diphenolic acid to formaldehyde is 1:2 to 4. ; and The the mole ratio of diphenolic acid to basic catalyst is 1:0.1 to 0.3. The diphenolic acid water soluble phenol resin obtained by the invention can be mixed with water by with arbitrary proportion. Each index of the diphenolic acid water soluble phenol resin reaches national standards. The invention is characterized in by simple technology, and is suitable for industrial production.

New application of glucoamylase, gas hydrate accelerant containing glucoamylase and method for preparing gas hydrate by using gas hydrate accelerant

The invention discloses new application of glucoamylase, a gas hydrate accelerant containing glucoamylase and a method for preparing a gas hydrate by using the gas hydrate accelerant and belongs to the technical field of environmental protection and emission reduction. The glucoamylase can be used for enhancing the gas storage density of the gas hydrate. The active components of the gas hydrate accelerant containing glucoamylase are tetrabutylammonium bromide and glucoamylase. The method for preparing the gas hydrate by using the gas hydrate accelerant comprises the following steps: (1) preparing a mixed solution by using tetrabutylammonium bromide, glucoamylase and water; and (2) introducing gas to be hydrated into the mixed solution and hydrating at the pressure of 0.5-10MPa and the temperature of 263-288 DEG C to obtain the gas hydrate. The gas hydrate accelerant disclosed by the invention has the advantages of improving the gas storage density of the gas hydrate effectively and lowering ...

Continuously sterilizing two-stage flash vaporization process and equipment

Synthesis process for bisphenol acid type epoxy resin with medium molecular mass

The invention relates to a synthesis technology of diphenolic acid epoxy resin with moderate molecular weight, comprising the steps of using diphenolic acid and epoxy chloropropane as rawsource materials and condensing and catalyzing with alkaline catalyst to obtain diphenolic acid epoxy resin with moderate molecular weight through catalyzing by basic catalyst in the presence existence of phase transfer catalyst. The mole ratio of diphenolic acid to epoxy chloropropane is 1:2 to 10. The usage of the phase transfer catalyst is 1 to 4 percent of the mole number of diphenolic acid. The mole ratio of the usage of basic catalyst and diphenolic acid is 1:0.2 to 0.6. The reaction temperature is 60 to 80 degrees centigrade DEG C. , and The the reaction time is 2 to 6 hours. The synthesis technology of diphenolic acid epoxy resin with moderate molecular weight is characterized in by simple technique and high yield, and is suitable for industrial production.

Impinging stream reactor for quickly preparing natural gas hydrate and assorted system as well as method

The invention discloses an impinging stream reactor for quickly preparing a natural gas hydrate, and belongs to the field of natural gas hydrate preparation. The reactor comprises an outer-layer reactor and an inner-layer reactor, wherein a screen plate is arranged between the outer-layer reactor and the inner-layer reactor; a coiled pipe cooler, a stirrer, two stream guide barrels and a gas distributor are arranged in the inner-layer reactor; two layers of stirring paddles with opposite rotating directions are arranged on the stirrer and are respectively positioned at the top of the upper stream guide barrel and the bottom of the lower stream guide barrel; a liquid inlet and a gas exhaust opening are formed in the top of the inner-layer reactor; a gas inlet is formed in the bottom of the inner-layer reactor and is communicated with the gas distributor; an overflow opening is formed in the side wall of the inner-layer reactor. The invention further provides a corresponding assorted system ...

Foam orifice dust removing device for coal mine dry type drilling dust control

The invention discloses a foam orifice dust removing device for coal mine dry type drilling dust control. The dust removing device comprises a box body, a foaming valve block arranged in the box body and a foaming cylinder arranged in the box body; the foaming valve block comprises a water inlet, an air inlet, a water and material mixing pipe, a gas and liquid mixing foaming end and a foaming agent material sucking pipe. The water inlet is connected with the gas and liquid mixing foaming end through the water and material mixing pipe, the water and material mixing pipe is communicated with the foaming agent material sucking pipe used for sucking foaming agent material liquid, the water and material mixing pipe is connected to the gas and liquid mixing foaming end, the air inlet is communicated with the gas and liquid mixing foaming end, a plurality of exhaust openings are formed in the periphery of a liquid outlet of the gas and liquid mixing foaming end, and a liquid outlet, the exhaust ...

Alcohol cleaning production technology using wheat as raw material

A clean process for preparing alcohol from wheat includes such steps as grinding, separating bran, adding water to wheat flour, separating out gluten powder, liquefying the suspension of residual starch, saccharifying, fermenting, rectifying to obtain 95% alcohol, dewatering to obtain absolute alcohol, concentrating and drying residue to obtain feed, aerobically treating the residual water and condensed water for reuse.

Synthesis process for bisphenol acid type epoxy resin with medium molecular mass

The invention relates to a synthesis technology of diphenolic acid epoxy resin with moderate molecular weight, comprising the steps of using diphenolic acid and epoxy chloropropane as rawsource materials and condensing and catalyzing with alkaline catalyst to obtain diphenolic acid epoxy resin with moderate molecular weight through catalyzing by basic catalyst in the presence existence of phase transfer catalyst. The mole ratio of diphenolic acid to epoxy chloropropane is 1:2 to 10. The usage of the phase transfer catalyst is 1 to 4 percent of the mole number of diphenolic acid. The mole ratio of the usage of basic catalyst and diphenolic acid is 1:0.2 to 0.6. The reaction temperature is 60 to 80 degrees centigrade DEG C. , and The the reaction time is 2 to 6 hours. The synthesis technology of diphenolic acid epoxy resin with moderate molecular weight is characterized in by simple technique and high yield, and is suitable for industrial production.

Biochar-based MOFs catalyst as well as preparation method and application thereof

The invention belongs to the technical field of biomass energy utilization, and particularly relates to a biochar-based MOFs catalyst as well as a preparation method and application thereof, and the preparation method comprises the following steps: preparing biomass pyrolytic carbon, preparing modified biochar, preparing a carbon-based MOFs catalyst, preparing a nickel-loaded carbon-based MOFs catalyst, and performing microwave catalytic pyrolysis. The prepared biochar-based MOFs catalyst is excellent in catalytic performance, can be applied to biomass microwave catalysis for preparation of high-value aromatic hydrocarbon and hydrogen, realizes high-quality gas-liquid co-production, can be recycled repeatedly, and is an efficient catalyst.

Direct transformation process of ethyl levulinate by hydrolysis of cellulose materials

The invention belongs to the technical field of preparing ethyl levulinate, in particular to a direct transformation process of ethyl levulinate by hydrolysis of cellulose materials. The process comprises the following steps: adding the cellulose materials into a reaction system comprising ethanol, liquid acid catalyst/solid acid catalyst, and cosolvent, hydrolyzing for 2 to 60 minutes at the temperature of 150 to 230 DEG C to obtain hydrolyzate containing the ethyl levulinate, and purifying the hydrolyzate to obtain the ethyl levulinate. In the invention, the cosolvent is added into the hydrolysis system of the cellulose materials, and the intermediate products such as hydromethyl furfural, the levulinic acid and the like generated during the hydrolysis of the cellulose materials can be extracted into an organic phase containing the cosolvent in the presence of the cosolvent, thereby preventing the further reduction of the intermediate products, facilitating the reduction of by-products ...

Method and device for separating cellulosic ethanol

The invention belongs to the technical field of producing cellulosic ethanol, and particularly relates to a process and a device for separating the cellulosic ethanol. The process comprises the following steps: firstly, performing solid-liquid separation on a mature fermenting mash which is obtained by fermenting sugar liquor with lignin in a fermentation unit, and drying the separated solid phase to obtain lignin dry residues and alcohol vapor A; secondly, concentrating the separated liquid phase to obtain concentrated solution and alcohol vapor B; thirdly, drying the concentrated solution to obtain lignin dry residues and alcohol vapor C; and fourthly, condensing the alcohol vapors A, B and C, and then distilling the same to obtain a finished product ethanol. The separation device comprises a separation unit, a first-stage drying unit, a concentration unit, a second-stage drying unit, a condensing unit and a distilling unit. The process for separating the cellulosic ethanol has low energy ...

Method for preparing biodiesel under supercritical condition

The invention belongs to the technical field of biodiesel preparation, and more particularly relates to a method for preparing biodiesel under the supercritical condition. The method takes high acid value oil and low carbon alcohol as raw materials; the raw materials are firstly preheated to more than 220 DEG C and then sequentially have supercritical reaction for twice; after every time of supercritical reaction, the products are separated and refined. By adopting the method, the raw materials are not needed to be pretreated, the requirement for the raw materials is low, the mole ratio between the alcohol and the oil is low, the energy consumption is low, the product quality is stable, and industrialized continuous production can be realized; furthermore, the raw materials can also be reasonably recovered for recycling, other components are refined for reusing, and no waste water is generated.

Method for inhibiting carbon deposition of catalyst by utilizing microwave catalytic pyrolysis of biomass

The invention belongs to the technical field of biomass energy utilization, and particularly relates to a method for inhibiting carbon deposition of a catalyst by utilizing microwave catalytic pyrolysis of biomass. Preparing biological pyrolytic carbon; according to preparation of the carbon-based characteristic catalyst and microwave pyrolysis of biomass, a certain mass of biomass raw materials and a molecular sieve catalyst are put into a microwave reactor to be subjected to catalytic pyrolysis at the temperature of 500-600 DEG C, and generation of carbon deposit of the catalyst can be effectively inhibited. According to the method, biomass is catalytically pyrolyzed by adopting a biomass charcoal-based catalyst coupled microwave heating mode, so that the generation of catalyst carbon deposit is remarkably reduced, the service life of the catalyst is prolonged, relatively good economy is achieved, and the yield is increased.

Dual-flow tower

The invention discloses a dual-flow tower. The dual-flow tower comprises a tower body and a plurality of layers of tower plates, wherein each tower plate comprises a supporting plate and a pipe assembly which is arranged on the supporting plate, the pipe assemblies are arranged at intervals on the supporting plate, the supporting plates are connected with the tower body, the pipe assembly is of a closed structure, two ends of the pipe assembly are respectively communicated with a jacket outside the tower body, a medium inlet and a medium outlet are formed on each jacket, and heating or cooling medium can be introduced between the jacket and the pipe assembly. Compared with the traditional dual-flow sieve plate and angular dual-flow tower, the dual-flow tower is formed by water-drop-shaped or quadrangle closed structure dual-flow tower plates, the water-drop-shaped or quadrangle pipe assembly is compared with a sieve pore and an angular part, the water-drop-shaped part consists of an upper ...

Synthesis process of bisphenol acid type water soluble phenol resin

The invention relates to a synthesis technology of diphenolic acid water soluble phenol resin, comprising the steps of adding basic catalyst and diphenolic acid in a reactor in turn, uniformly stirring, heating to 40 to 50 DEG Cdegrees centigrade, slowly dripping formaldehyde aqueous solution when stirring, reacting for 2 to 4 hours at 50 to 80 degrees centigrade DEG C to obtain the diphenolic acid water soluble phenol resin. The mole ratio of diphenolic acid to formaldehyde is 1:2 to 4. ; and The the mole ratio of diphenolic acid to basic catalyst is 1:0.1 to 0.3. The diphenolic acid water soluble phenol resin obtained by the invention can be mixed with water by with arbitrary proportion. Each index of the diphenolic acid water soluble phenol resin reaches national standards. The invention is characterized in by simple technology, and is suitable for industrial production.