85results about How to "Uniform heat release" patented technology

The invention discloses a hydrocracking process operation method. Hydrocracking pre-refining catalyst is treated by precuring outside a reactor while hydrocracking catalyst is not treated or is partially treated by precuring outside the reactor. Curing ingredient introduced by the hydrocracking pre-refining catalyst and the hydrocracking catalyst precured outside the reactor accounts for 90-120% of the theoretical sulfur demand for all the catalyst. The hydro cracking pre-refining catalyst and the hydro cracking catalyst are layered in the reactor and then activated by heating, so that all the catalyst is sulfurated effectively. The method of the invention can precure the hydrocracking pre-refining catalyst outside the reactor or precure the hydrocracking pre-refining catalyst and partial hydrocracking catalyst outside the reactor, thus reducing the catalyst requiring precuring outside the reactor, reducing the production period and production cost of the precuring catalyst and improving the economic benefit and production security.

A process for preparing the sulfurizing hydrocatalyst used for the hydrodesulfurizing and hydrodenitrifying reactions of light fractional oil and the hydrosaturating of arylhydrocarbon includes such steps as carrying a certain part of the precursor compound of the metal in VI and VIII families, introducing sulfur to it, heat treating, introducing the rest of said precursor compound, and drying.

The invention discloses a method for regenerating and pre-vulcanizing a hydrogenation catalyst, which comprises the following steps of: after carrying out charcoal burning on the inactivated hydrogenation catalyst, cooling to a certain temperature; and then directly carrying out suitable pre-vulcanizing treatment and passivating treatment outside a device. In the method disclosed by the invention, the regeneration and vulcanization of the inactivated hydrogenation catalyst are organically combined, so that the generated catalyst is directly subjected to pre-vulcanizing and passivating treatment without being cooled, active metal components can be in a certain active state, and at the time, if the pre-vulcanizing is directly carried out, the vulcanizing effect and the utilization rate of a vulcanizer can be improved. A test shows that in the process, the activity recovery effect of the regenerated catalyst can be improved and the service performance of the regenerated catalyst can be improved. Meanwhile, due to the adoption of the method disclosed by the invention, the energy consumption can be reduced, the production cost is reduced and the production period is shortened.

The invention discloses a method for regenerating and prevulcanizing hydrogenation catalysts. After charcoal is inactivated, inactivated hydrogenation catalysts are cooled to a certain temperature and then are directly prevulcanized correctly outside a device. With the method, the regeneration and the prevulcanization of inactivated hydrogenation catalysts are integrated, regenerated catalysts are directly prevulcanized without cooling, active metal components are enabled to be in an active state, and then, the vulcanization effect and the utilization rate of vulcanizing agents can be increased by direct prevulcanization. Experiments show that the process can also increase the activity recovery effect and the usage of regenerated catalysts. In addition, the method also has the advantages of reducing the energy consumption and the production cost and shortening the production period.

The invention provides alkaline powder for treating leaked sulfuric acid and a preparation method of the alkaline powder. The alkaline powder is prepared from a neutralizer, an aid, a heat absorbent, a moisture-proof agent, a dispersant and an indicator in a certain ratio by a specific method. The raw materials for preparing the alkaline powder are readily available; the preparation method is simple, convenient and low in energy consumption; and the prepared powder does not cake, and is low in moisture absorption and good in settling performance after being sprayed. The alkaline powder can be used for effectively treating the leaked sulfuric acid of which the concentration is 50 to 98 percent or more; and the treatment process has the characteristics of high response speed, low temperature rise, secondary harm prevention, simplicity and convenience in endpoint judgment and the like.

The invention provides an environment-friendly thermal insulation damping coating and a preparation method thereof. The coating is prepared from the following components in parts by weight: flexible acrylic emulsion with the glass-transition temperature of -25 to -15 DEG C, first styrene-acrylic emulsion with the glass-transition temperature of 20-30 DEG C, second styrene-acrylic emulsion with theglass transition temperature of 35 to 45 DEG C, silane-modified hollow glass beads, silane-modified chopped polypropylene fibers and a functional filler. The coating has moderate surface drying timeand hard drying time, has good flexibility, has an adhesive force of 0 grade, has a heat conductivity coefficient reaching the standards of thermal insulation materials, has a composite loss factor eta greater than or equal to 0.05 at -10 DEG C, greater than or equal to 0.14 at 20 DEG C and greater than or equal to 0.04 at 50 DEG C, and has excellent thermal insulation damping performance in a relatively large temperature range.

The invention discloses a high-efficiency reactor for hydrated salt chemical energy storage. The high-efficiency reactor comprises a heat insulation container, a column body for wrapping hydrated salt, a heat exchange pipe, fins, hydrated salt and pipelines, wherein the column body is arranged in the heat insulation container; the heat exchange pipe is arranged at the center of the column body; the multiple fins are uniformly arranged between the heat exchange pipe and the column body; one end of each fin is connected with the outer wall of the heat exchange pipe, and the other end of the fin is connected with the inner wall of the column body; a space between the heat exchange pipe and the column body is filled with the hydrated salt; and the two pipelines are arranged on an upper end cover of the heat insulation container. The high-efficiency reactor for hydrated salt chemical energy storage disclosed by the invention can well enable reaction salt to react with steam; the reaction is faster and more thorough, and the heat transfer and mass transfer effect in a reaction process is obviously enhanced; irreversible loss caused by liquefaction of the hydrated salt due to excessive water absorption can be further effectively avoided, so that the number of times of recycling of an energy storage material is increased, and the service life of the material is prolonged; and meanwhile, the corrosion effect of the liquefied hydrated salt on the reactor is also avoided.

The invention discloses a micro-premixing combustion chamber used for a natural gas turbine and applied to wet air circulation. The micro-premixing combustion chamber used for the natural gas turbineand applied to wet air circulation comprises a combustor main body, a flame tube and a combustion chamber cartridge, wherein the combustor main body is arranged on the head part of the combustion chamber; the flame tube is arranged in the combustion chamber cartridge, and is a cylindrical wall surface wrapping the combustion chamber, and the inner side of the wall surface is a combustion area of the combustion chamber; a main fuel inlet and an on-duty fuel inlet are formed in the front end of the combustor main body, and the main fuel inlet is used for inputting a fuel into a main nozzle of acombustor; the on-duty fuel inlet is used for inputting the fuel into an on-duty nozzle of the combustor; and an air chamber is formed in the bottom of the combustion chamber, the air chamber is wrapped with a gas turbine cartridge, communicates to a gap which is formed by a lining of the combustion chamber and the flame tube, and feeds air which comes from an upstream air compressor outlet into an air bin of the combustor through the gap.

The invention discloses a production technique for mass polyvinyl chloride. The production technique for mass polyvinyl chloride comprises a prepolymerization stage and a polymerization stage. A novel initiator Luperox 701M70 replaces an original initiator LPO; a new binary composite initiator formula system is used for polymerization reaction, heat release is balanced in mass polymerization reaction, heat transfer of a system is facilitated, polymerization pressure is controlled stably, heat of the polymerization reaction is easy to control, caking of the product is reduced, the B-grade product rate is reduced, the thermal stability of PVC resin is improved, the inner quality of the product is improved, and the post processing performance of the product is improved.

The invention relates to the technical field of a gas turbine, and specifically discloses a low-heat value fuel gas combustion chamber of the gas turbine. The low-heat value fuel gas combustion chamber comprises a casing, an end cover arranged at the front end of the casing, a head fuel spray nozzle arranged on the end cover, a flow guiding bush arranged in the casing, a flame tube arranged in the flow guiding bush and a transition section connected with the rear end of the flame tube, wherein the front end of the flame tube is connected with the head fuel spray nozzle; a plurality of rows of main combustion holes are distributed in the flame tube along the axial direction; low-heat value fuel spray nozzles are arranged among the main combustion holes in each row of the flame tube. According to the low-heat value fuel gas combustion chamber disclosed by the invention, lower pollutant emission level can be achieved, and the thermo-acoustic oscillation risk is lower.

The invention relates to the technical field of floor cloth paving, and in particular, relates to a seamless splicing and paving process of floor cloth for a subway vehicle. The floor cloth comprisesfloor cloth bodies and a skirting cloth body, and a first protruding block is welded to the top of the outer wall of one side of each floor cloth body. A second clamping groove is formed in the bottomof the outer wall of the side, close to each first protruding block, of each floor cloth body, a first clamping groove is formed in the outer wall of the side, close to each first protruding block, of the skirting cloth body, a second protruding block is welded to the bottom of the outer wall of the side, close to each second clamping groove, of the skirting cloth body, and the first protruding blocks are clamped in the first clamping grooves. Beneficial effects of the method are that the floor cloth is bonded after a rubber pipe is pressed; the floor cloth bodies and the skirting cloth bodycan be connected more tightly in a clamping mode, seamless splicing is achieved, the floor cloth is more attractive, meanwhile, the edge warping problem caused by untight connection between the floorcloth bodies and the skirting cloth body can be solved, and the floor cloth is more practical.

The invention discloses a heat accumulation cushion and a heat accumulation type floor heating system. The heat accumulation cushion is used for the heat accumulation type floor heating system and comprises an outer packing (8) and heat accumulation materials (9). A closed tabular cavity is formed by the outer packing (8) and the heat accumulation materials (9) are evenly filled into the cavity. The heat accumulation materials in the heat accumulation cushion (10) are distributed evenly. The heat accumulation cushion is paved on a floor heater and is fully contacted with the surface of the floor heater (2). The heat accumulation cushion is even in heat absorption, and higher in heat absorption rate. Due to the tubular shape, the heat accumulation cushion can absorb and release heat evenly, and heat absorption rate is increased.

The invention discloses a waste heat recovery method for fused calcium carbide. The waste heat recovery method comprises the following steps that the fused calcium carbide is subjected to forced air cooling, heat is recovered, and by controlling the magnitude of air flow, the purpose that the calcium carbide uniformly releases heat in the forced air cooling process is achieved. According to the waste heat recovery method for the fused calcium carbide, the effect that the calcium carbide uniformly releases the heat is achieved through forced air cooling and controlling over the magnitude of the air flow, and the problems that natural cooling is long in consumption time, the waste heat of the calcium carbide cannot be recycled, heat releasing of calcium carbide subjected to common forced air cooling is discontinuous and uneven, and waste heat recovery is not facilitated are solved.

The invention discloses a preparation method of a positive plate of a lithium ion battery, which comprises the following specific steps: uniformly mixing a high-nickel positive electrode material and a magnetic material through mechanical stirring to obtain high-nickel positive electrode slurry, coating the surface of a current collector with the high-nickel positive electrode slurry, and drying to obtain the positive plate of the lithium ion battery. The magnetic material is directionally arranged in the high-nickel positive electrode slurry by alternately loading and removing a magnetic field, meanwhile, a thick polar plate with a graded multi-dimensional through channel is prepared by utilizing an ice crystal effect, and then the magnetic material in the thick polar plate is recovered by adopting a magnetic recovery device to prepare the positive plate of the lithium ion battery, and the content of Ni in the high-nickel positive electrode material is greater than or equal to 80wt%. The magnetic material is iron-doped gadolinium gallium garnet magnetic nanoparticles. The constructed thick electrode with the hierarchical multi-dimensional through channel is applied to the lithium ion battery, and the rapid charging and discharging capability of the lithium ion battery is realized on the premise of not sacrificing the utilization rate and the capacity of an active material.

The invention relates to a temperature adjusting damper and a heat storage electric heater comprising the adjusting damper. The temperature adjusting damper comprises a shell, at least one ventilationcavity is formed in the shell, a fan is arranged in each ventilation cavity in a distributing mode, a hollow connecting plate is formed on each ventilation cavity, the fans are located at the lower portions of the connecting plates, a positioning plate is arranged on each connecting plate, at least one air outlet is formed in each positioning plate, temperature adjusting partition layers are formed between the connecting plates and the positioning plates, and adjusting mechanisms used for adjusting the size of the air volume of the air outlets are arranged in the temperature adjusting partition layers in a distributing mode. The temperature adjusting damper and the heat storage electric heater comprising the adjusting damper have the advantages that the structure is simple, automatic temperature control is achieved, and the effect is obvious; and bimetallic strips stretch and shrink when feeling the change of the temperature of the air outlets, then the size of the air volume of the air outlets is adjusted, so that the size of the air volume of the air outlets is automatically controlled, the adjusting effect is better, the heat release of the electric heater is more balanced, andthe heat utilization rate of the product is effectively improved.