45results about How to "Solving Mass Transfer Problems" patented technology

The present invention relates to an activated coke for absorbing persistent organic pollutant like dioxin in flue gas and a preparation method thereof by using coal quality semi coke as a raw material. The preparation method is as follows: crushing the coal quality semi coke; impregnating the coal quality semi coke with an impregnating solution containing metal hydroxide or alkali metal carbonate activator and compound surfactant, and naturally drying; and finally activating the impregnated and dried semi coke at 800-950 DEG C to prepare the activated coke for absorbing dioxin in flue gas. The activated coke has characteristics of developed porous structure, low manufacturing cost and good adsorption effect, etc.

The invention relates to a method for synthesizing phenolic resin. The method comprises the following steps: mixing raw materials, preparing a catalyst, synthesizing, extracting and distilling. By using a micro-channel reactor, the heat conduction process is intensified, the mass transfer problem is well solved, the material waste is greatly reduced, and the later treatment cost is also reduced. As a parallel 'quantity enlargement' mode is adopted during the industrial enlargement of the micro-channel reactor, direct enlargement from a laboratory to the industrial production process is achieved, and the practical production is relatively flexible. Modern high-efficiency chemical development and production windows are opened, and the modern chemical engineering develops towards environment protection, safety and high efficiency.

A process for preparing biologic diesel oil from the fat with high acid number by esterifying and ester exchange includes such steps as proportionally loading said fat and methanol into high-pressure reactor, proportionally adding Lewis acid as catalyst, reation, distilling the resultant to separate methanol, centrifugal separation or filter to remove part of catalyst, water washing to remove residual glycerin and catalyst, and refining.

The invention belongs to the fields of adsorptive refrigeration / heat pumps, adsorptive separation purification and hydrogen storage, and particularly relates to a chloride-carbonaceous skeleton composite adsorbent and a preparation method thereof. The adsorbent is characterized by comprising the following raw materials: based on a carbonaceous precursor, 0.5 to 2 percent of chloride, 0 to 25 percent of adhesive and 0 to 50 percent of heat conducting material. The preparation method for the chloride-carbonaceous skeleton composite adsorbent is characterized by comprising the steps of crushing of the carbonaceous precursor, preparation of impregnation liquid, impregnation of the carbonaceous precursor, forming, air-blasting drying, carbonization and activation and the like. The adsorbent prepared by the method fully solves the problem of mass transfer coefficient decline caused by filling the chloride and pressing a plugging micropore at the same time of ensuring efficient heat transfer, and obviously improves the loading strength and the utilization rate of the chloride.

The invention relates to a manufacturing method of a netted catalyst for degrading the organic pollutant in wastewater by photocatalysis and a wastewater treating device. The manufacturing method comprises: using the wire net plated with nickel as a carrier, coating a catalyst for solidification, wherein the catalyst mixed liquid includes nano TiO2, acetone, epoxy resin, solidifying agent and appropriate plasticizer, soaking in the acetone solution. A case of the treatment device is provided with a plurality of independent deflecting chambers connected end-to-end in turn, two ends of which areprovided with a water inlet and a water outlet. A plurality of solid netted bodies solidified with the catalyst are overlapped at intervals in the deflecting chamber. A through hole is opened in themiddle of the solid netted body. An ultraviolet light source is inserted in the through hole. An aeration pipe is arranged on the bottom of the deflecting chamber. The device can deeply degrade the organic matter in wastewater.

The invention provides a device for recovering high-concentration hydrochloric acid from chlorine-containing tail gas, which comprises a chlorine-containing tail gas supply system, a water supply system, a circulating absorption system, a secondary absorption system and a product storage and filling system, the circulating absorption system is respectively connected with the chlorine-containing tail gas supply system, the water supply system, the secondary absorption system and the product storage and filling system, and the secondary absorption system is also respectively connected with the water supply system and the product storage and filling system. The method is reasonable in design and simple to operate, the problem that a large amount of low-concentration waste hydrochloric acid is generated in the treatment process of chlorine-containing tail gas such as hydrogen chloride, boron trichloride and silicon tetrachloride is solved, and the concentration of waste acid is effectively increased to the industrial grade; the concentrated hydrochloric acid can be used for steel pickling and other processes, and can also be used for subsequent purification processes, so that the purity of the hydrochloric acid is further improved.

The invention discloses a direct carbon solid oxide fuel cell, wherein an electrolyte tube support body is a tubular structure with one closed end, the tubular inner wall of the electrolyte tube support body is provided with a porous anode film and the outer wall thereof is provided with a porous cathode film; powder carbon is in the porous anode film of the electrolyte tube support body, and a gas-guide tube is sealed at an opening end of the electrolyte tube support body; the opening end of the electrolyte tube support body and the gas-guide tube are sealed through a heat-resistant sealing-in material; the material of the electrolyte tube support body is yttrium-stabilized zirconia; and a slip casting forming method or dipping method is adopted for preparation and the fuel cell is formed by sintering for 3-4h in the air at the temperature of 1, 400-1, 600 DEG C. The cell is a solid oxide fuel cell directly using carbon fuel and is of a full solid structure. Electric energy output can be obtained by heating the cell with gas discharged simultaneously. The cell has the advantages of simple structure, easy operation, high conversion efficiency and the like and has great significance to the high efficient and clean use of coal-based fuel.

A green preparation method of gmelinite with through-step pores, in which neutral copolymer, deionized water, aluminum source, alkali source, and silicon source are mixed uniformly in a certain proportion, and the obtained product is centrifuged through hydrothermal crystallization , drying, extracting and removing the template agent to obtain gmelinite with through-step pores. This method completely retains the structural characteristics of gmelinite and the template agent can be recycled. It is a green preparation method. The gmelinite prepared by the method has the advantages of penetrating step-pore zeolite, high specific surface area and pore volume, and is beneficial to the application of selective adsorption and mass transfer of macromolecules.

The invention discloses a technology for synthesizing dodecylbenzene sulfonic acid in a circulating microreactor. The technology is characterized in that a dodecylbenzene solution and a sulfonating agent which is a sulfur trioxide solution are rapidly mixed in a microporous dispersion reactor so as to realize sulfonation process; the obtained product flows back and is mixed with dodecylbenzene, and the mixture circularly enters a microreactor for further reacting; after sulfur trioxide is fed, the mixture is aged for 30-50min, and then the solvent which is 1, 2-dichloroethane is recovered by rotary evaporating so as to obtain the dodecylbenzene sulfonic acid product. According to the technology, the microporous dispersion technology is carried out to fully mix dodecylbenzene and the sulfonating agent, so that byproducts produced due to high local concentration of sulfur trioxide can be effectively avoided; moreover, the reaction temperature can be accurately controlled, so that local overheat due to heat produced in the reaction can be avoided; the reaction process and the ageing process are combined, so that the conversion rate of dodecylbenzene is increased; the dodecylbenzene sulfonic acid in the main product is up to 98% by mass; and the product is basically free from waste acid; and the product is easily separated.