30results about How to "Control dwell time" patented technology

The present invention discloses a gas low-nitrogen burner and a combustion method that couples barrier wind with staged combustion. Through the three-dimensional arrangement of gas, air and barrier wind nozzles, air, gas and 20% to 25% of recycled flue gas are evenly divided into three stages as barrier wind and delivered into the furnace. The barrier wind can delay the direct contact between air and gas, so that the gas is fully mixed with the air before ignition and is evenly diluted by the barrier wind, thereby achieving uniform combustion and uniform temperature field in the space. At the same time, the barrier wind can also reduce the oxygen partial pressure, absorb the released heat, and reduce local high-temperature areas; in addition, through the three-dimensional arrangement of gas and air and the reasonable step-by-step distribution of gas and air into the furnace, the high-temperature combustion area is controlled to create a reducing atmosphere, even in the presence of NO x The present invention couples the barrier wind and staged combustion technology to reduce the NO x The emission concentration is reduced to less than 30mg / Nm 3 It is suitable for newly built or existing low-nitrogen gas boiler projects and has broad application prospects.

The invention discloses waste water recycling equipment for corrugated board production, and relates to the technical field of waste water treatment.The waste water recycling equipment comprises a settling box, a water outlet pipe is fixedly connected to one side of the settling box, a water inlet pipe is fixedly connected to the side, away from the water outlet pipe, of the settling box, and sliding grooves are symmetrically formed in the upper end face of the settling box; the liquid collecting box can be driven to move intermittently and equidistantly on the upper end face of the settling box, a flocculating agent in the liquid collecting box is uniformly sprayed on wastewater in the settling box, the flocculating agent can be uniformly sprayed to all corners of the settling box, and the problem that the local concentration is too high or too low due to direct feeding through a traditional single inlet is solved; the uniform distribution enables the flocculation reaction in the wastewater to be more consistent, and the obvious difference of flocculation effects among different areas is reduced, so that floating matters and suspended matters in the wastewater are more effectively removed, the overall efficiency of wastewater treatment is improved, the quality of the treated wastewater is improved, and the wastewater is more in line with environmental protection standards and subsequent treatment requirements.

The utility model discloses a balloon blocking high-position enemator. An enema catheter is connected and communicated to a liquid storage bag; the balloon is connected to the enema catheter and at least partially wraps the periphery of the enema catheter in the circumferential direction; the end, away from the balloon, of the air bag air inlet pipe is used for air inflow. According to the high-position enemator blocked by the balloon, under blocking of the balloon, enema liquid can stay in the intestinal tract for a long time, the enema liquid rises along the colon, the enema position is higher, the staying time of the enema liquid in the intestinal tract can be controlled, excrement is fully softened, and the enema curative effect is improved. The problems that excrement cannot be controlled after traditional enema, enema liquid is rapidly discharged out of the intestinal tract after enema, excrement cannot be fully softened, the enema effect is reduced, the enema frequency needs to be increased sometimes to increase the enema effect, and the economic burden and pain of a patient are increased are solved.

The utility model discloses a cyclone type chlorine dioxide generator, including generator body, the bottom of generator body is provided with raw material adding opening, and raw material adding opening out installs liquid inlet structure, the liquid inlet structure includes for inner tube and the outer tube of setting in the outer portion of inner tube, the upper end of inner tube is closed, and the lateral wall on inner tube is equipped with liquid inlet hole, and the lower end of inner tube is used for adding hydrochloric acid, the lower end of outer tube is closed, and the lateral wall on outer tube is vertically installed with liquid adding pipe, and liquid adding pipe is used for adding sodium chlorite, and the upper end of outer tube is linked with raw material adding opening. The utility model can make the reaction raw material in the joining place of reactor and the reaction zone subarea realize raw material's quick double full mixing, improve the reaction rate, make the reaction more fully, can provide sufficient diffusion space for the reaction liquid of heated expansion simultaneously, control the residence time of reaction liquid in generator, reduce the production of byproduct such as sodium chlorate, improve the conversion rate of sodium chlorite, guarantee the high yield of ClO2.

A steam powder tail gas waste heat recovery refrigeration coupling DTB crystallization system comprises steam powder process equipment for conducting steam flow crushing on titanium dioxide materials through steam, crystallization process equipment for crystallizing titanium liquid and a refrigerating unit. The refrigerating unit is externally connected with a cooling circulation mechanism, and a generator, an absorber, a condenser and an evaporator are arranged in the refrigerating unit. And the absorber, the condenser and the cooling circulation mechanism are circularly connected to form a second circulation. And a second cooling medium is filled in the second circulation. The steam powder process equipment comprises a steam flow crusher and a steam powder tail gas spray tower, and the steam powder tail gas spray tower is circularly connected with the generator to form a first cycle. And a third cycle is arranged in the crystallization process equipment, and a third cooling medium is filled in the third cycle. According to the utility model, the refrigerating unit is matched with the three-stage DTB crystallization process, so that the efficient utilization of energy is realized, and the retention time and the crystal growth time in the crystallization process are effectively controlled.

The invention provides a preparation method and device of a graphene metal composite material. The preparation method comprises the steps that a metal raw material is prefabricated into metal liquid or metal powder or metal powder coated with a carbon source; a prefabricated metal raw material is sprayed to the first reaction area, and metal powder with the solid metal powder surface is prepared; the metal powder with the solid surface is put into a second reaction area, the metal powder is heated until part or all of the surface of the metal powder is in a liquid state, graphene is deposited on the surface of the metal powder, and a graphene metal compound is obtained; wherein the temperature of the second reaction zone is higher than that of the first reaction zone; the graphene metal compound is put into a cooling area to be cooled, and the graphene metal composite material is obtained; wherein the temperature of the cooling zone is lower than that of the first reaction zone. The invention aims to solve the technical defects of small graphene coating area and low quality in the graphene metal composite material obtained in the prior art.

The utility model belongs to the technical field of pot seedling transplanters, and particularly relates to a linkage type seedling taking device of a transplanter, which comprises an upper seat plate, a seedling taking claw support is slidably mounted on the bottom surface of the upper seat plate, a seedling taking claw component is slidably mounted on the seedling taking claw support, and the sliding directions of the seedling taking claw support and the seedling taking claw component are perpendicular to each other. The seedling picking device is characterized in that a support driving air cylinder is installed on the front side of the seedling picking claw support, a swing driving air cylinder is installed at the bottom of the seedling picking claw support, the structure of a driving device is simplified, the power transmission efficiency is improved, the daily maintenance cost is reduced, and the seedling picking device has high environment adaptability.

The multi-angle adjustable grate bed for the grate cooler comprises a base, a grate bed frame is arranged at the top of the base, a grate plate is connected between the inner walls of the grate bed frame in a sliding mode, a displacement assembly is arranged in the grate bed frame and used for driving the grate plate to move, a rotating groove is formed in the top of the base, and a rotating shaft is arranged in the rotating groove. An adjusting supporting block is arranged between the inner walls of the rotating groove, the top of the adjusting supporting block is fixedly connected with the grate bed frame, and an adjusting assembly is arranged between the grate bed frame and the base and used for driving the grate bed frame to rotate. According to the grate bed for the grate cooler, the grate bed frame is driven by the adjusting assembly to be connected with the grate bed plate to rotate integrally, so that the grate bed for the grate cooler can be adjusted at multiple angles in the using process, the residence time and the heat transfer effect of materials on the grate cooler can be effectively controlled, accurate control over the material cooling and curing process is improved, and the service life of the grate cooler is prolonged. Therefore, the production efficiency of materials and the product quality are improved.

The invention relates to the technical field of gel product curing forming, in particular to curing equipment and a gel preparation device. The curing equipment provided by the invention comprises a curing tank, a buffer assembly and a partition plate, one end of the curing tank is provided with a medium inlet, and the other end is provided with a discharge port; the buffer assembly is arranged in the curing tank and is used for buffering the medium liquid entering the curing tank from the medium inlet; the partition plate is inserted into the curing groove and located between the buffering assembly and the discharging opening, and the lower end of the partition plate and the bottom wall of the curing groove are arranged at intervals. And under the action of the buffer assembly, the liquid level of the medium liquid in the curing tank is stable, and raw material forming is facilitated. The lower ends of the partition plates and the bottom wall of the curing tank are arranged at intervals, so that undercurrent is formed at the bottom of the medium liquid in the curing tank, raw materials sinking to the bottom can be driven to move in the direction of the discharging opening, and the undercurrent speed at the bottom of the medium liquid in the curing tank can be adjusted by setting the number and the positions of the partition plates; therefore, the time of the raw materials in the medium liquid is controllable.

The utility model belongs to the technical field of cooling devices, and particularly relates to an efficient cooling device with a multi-bin jacket structure. The device comprises a supporting device, a cylinder part is arranged on the supporting device, the cylinder part comprises an outer cylinder and an inner cylinder, a closed jacket cooling space is formed between the outer cylinder and the inner cylinder, a water inlet and outlet device communicated with the jacket cooling space is arranged on the outer cylinder, a plurality of bins are arranged in the inner cylinder, and the water inlet and outlet device is communicated with the jacket cooling space. A spiral material guide plate is arranged in each bin, the barrel part is driven to rotate through a driving device, heat of mineral aggregates in the barrel is taken away by cooling water in the jacket cooling space after the barrel rotates, cooling is achieved, and the mineral aggregates are gradually discharged out of the inner barrel under the action of the spiral material guide plates. According to the utility model, the efficient cooling of the mineral aggregate is realized through the multi-bin structure of the inner cylinder body and the jacket space between the inner cylinder body and the outer cylinder body, and the cooling retention time and the discharging speed of the mineral aggregate are accurately controlled through the matching of the spiral guide plate and the driving device.

The invention relates to the technical field of boiler flue gas waste heat utilization, in particular to a boiler flue gas waste heat gradient utilization device which comprises a second emission heat recovery main body, a fixed mounting disc, a first emission heat recovery main body and a third emission heat recovery main body. The second emission heat recovery body is disposed at an upper end of the first emission heat recovery body, and the third emission heat recovery body is disposed at an upper end of the second emission heat recovery body. Stepped waste heat recovery treatment can be carried out through the arranged heat exchange holes and the third discharged heat recovery main body, and different media can be heated and utilized along with proceeding of different stages of heat recovery, so that heat in flue gas conveyed and discharged in the equipment is reasonably and fully utilized; and different media are heated and recovered through stepped heat, and it can be ensured that heat in smoke is reasonably and fully utilized.

The invention discloses a sludge pyrolysis method and system, the method comprises the following steps: controlling the water content of sludge; pyrolysis of sludge produces sludge charcoal and pyrolysis gas, the pyrolysis gas is burned to obtain high-temperature flue gas, the high-temperature flue gas pyrolyzes the sludge, saturated steam obtained by heat exchange of the generated flue gas is used for pretreatment of circulating heating sludge, the flue gas after heat exchange can enter step 2 for combustion and temperature adjustment, and is used for preheating air for combustion assistance; the system comprises a pretreatment unit, a pyrolysis unit and a discharging unit which are connected in sequence, the pretreatment unit is connected to a steam heat exchanger; the pyrolysis unit comprises a combustion chamber, a rotary drum and a flue gas interlayer, the rotary drum is connected to the combustion chamber, the combustion chamber is connected to the flue gas interlayer, the flue gas interlayer is connected to the steam heat exchanger, and the rotary drum is connected to the discharging unit; the flue gas passing through the steam heat exchanger enters the combustion chamber for combustion and temperature adjustment, the preheated air is used for combustion assistance in the combustion chamber, and the flue gas is discharged after being purified by tail gas; the invention makes efficient use of heat, operates stably for a long time, and does not produce secondary pollution.

The invention belongs to the technical field of fine chemical engineering, and particularly relates to a method and device for producing nicotinamide through continuous cyanopyridine enzyme hydrolysis. 3-cyanopyridine and a buffer solution are mixed as a raw material solution in a hydrolysis reactor, and 3-cyanopyridine is hydrolyzed under the catalytic action of hydrolase to produce nicotinamide; wherein a hydrolase supplementing system, a hydrolase transferring system and an inactivated enzyme filtering system are arranged in the hydrolysis reactor. A filter screen is arranged in an inner cavity of the hydrolysis reactor and divides the hydrolysis reaction area into an upper section and a lower section, the upper section of the hydrolysis reaction area is provided with a hydrolase supplementing system and a hydrolase transferring system, and the lower section of the hydrolysis reaction area is provided with an inactivated enzyme filtering system; fresh hydrolase enters the upper section of the hydrolysis reaction area through the hydrolase supplementing system, the hydrolase transferring system directly transfers the hydrolase with reduced activity in the upper section of the hydrolysis reaction area to the lower section of the hydrolysis reaction area, and the inactivated enzyme filtering system filters the inactivated hydrolase in the lower section of the hydrolysis reaction area and then discards the inactivated hydrolase. Therefore, the replacement of the hydrolase and the graded utilization of different enzyme activities are completed. The method provided by the invention realizes continuous production of nicotinamide through enzymatic hydrolysis of 3-cyanopyridine by a biological method, the production operation condition is stable and easy to control, the reaction period is shortened, and the problems of intermittent production, complex and difficult control of process operation conditions and reduction of enzyme activity of hydrolase caused by continuous increase of product concentration in a traditional biological method are avoided. And the quality of products is uneven.

The utility model discloses a kind of highland barley roasting machines, it is related to highland barley roasting field, including primary roasting unit, secondary roasting unit and tertiary roasting unit, the primary roasting unit includes electric hot plate, primary roasting pan and primary scraping mechanism, the primary roasting pan bottom is annular, the secondary roasting unit includes electric hot plate, secondary roasting pan and secondary scraping mechanism, the tertiary roasting unit includes electric hot plate, tertiary roasting pan and tertiary scraping mechanism, the tertiary roasting pan is annular, the tertiary scraping mechanism can promote highland barley to fall from tertiary roasting pan inner ring place, by the synergistic effect of tertiary classification heating and tertiary scraping mechanism, the drawbacks caused by traditional equipment due to single constant temperature roasting are solved, avoid the problem of scorched paper caused by insufficient heating at highland barley front end, excessive heating at rear end, finally make highland barley overall heating more uniform, not only reduce energy consumption, also significantly improve roasting efficiency and finished product qualification rate.

The utility model provides a drying device for drying sludge by using waste oil, which relates to the technical field of sludge treatment devices and comprises a wet sludge conveyor inserted into a frying and drying tank, a molding plate is welded at a discharge port of the wet sludge conveyor, a round hole is formed in the surface of the molding plate and communicated with a connecting pipe, and the diameter of the connecting pipe is the same as that of the round hole. The end, deviating from the molding plate, of the connecting pipe is connected with a feeding port of a drying screw conveyor, and the drying screw conveyor penetrates out of a discharging port of the frying and drying tank and is arranged above the dry sludge bin; the technical problems that in the prior art, the drying period is long, cooperative treatment with waste oil is not achieved, and resources are wasted are solved, and the technical effects that energy consumption is reduced, drying time is shortened, sludge and waste oil are synchronously treated, and resources are cooperatively utilized are achieved.

The invention relates to a superheated steam device and method for storage and preservation of rice, the superheated steam device comprises a steam generating device and an enzyme deactivation box, the enzyme deactivation box comprises a sealed box body, the top of the box body is provided with a feed port, the bottom of the box body is provided with a discharge port, and a slide way is arranged in the box body to communicate the feed port with the discharge port; the sliding way is composed of a plurality of sliding plates which are fixed in the box body, distributed from top to bottom and sequentially arranged in a Z shape. Through holes with the diameter smaller than that of rice grains are evenly distributed in the sliding plates to form air holes. A plurality of steam inlets are formed in the two sides of the box body, a steam outlet is formed in the top of the box body, the steam inlets of the box body are connected with a steam outlet of the steam generating device through pipelines, and the steam outlet of the box body is connected with a steam recycling opening of the steam generating device through a pipeline; the method can effectively kill microorganisms, pests and oxidase in the rice and effectively prolong the storage life of the rice, so that the rice can safely live in summer.

The application discloses a kind of continuous flow photocatalytic decarboxylation preparation biological hydrocarbon method, belong to the technical field of biofuel preparation.The method includes the following steps: high fatty acid compound, hydrogen atom transfer catalyst and acridine photocatalyst are dissolved in organic solvent, and mixed solution is obtained;The mixed solution is passed into circulating continuous flow light reactor, and photocatalytic decarboxylation reaction is carried out at room temperature for 12-24 hours, and reaction liquid is obtained;Reaction liquid is separated by reduced pressure distillation, and the biological hydrocarbon compound after decarboxylation is obtained.The application uses continuous flow light reactor to strengthen mass transfer and heat transfer efficiency, solves the problem that light penetration depth is limited in traditional batch photoreactor, and reaction is not uniform;Metal-free catalytic system is used, and the use of noble metal and potential residual risk is avoided.The method has mild reaction condition, higher product yield, good atom economy, and for unsaturated high fatty acid, olefin configuration can be maintained before and after decarboxylation, and has good industrial application prospect.

The utility model relates to the technical field of gypsum powder cooling machines, and discloses a gypsum powder cooling machine for a gypsum line production line, which comprises a support frame, and a cooling machine shell is mounted on the upper surface of the support frame; the driving machine is arranged on the right side of the inner cavity of the cooling machine shell, a rotor of the driving machine is coaxially provided with a driving rod, and the surface of the driving rod is rotationally connected with a lifting plate; the cooling bin is arranged on the left side of the lifting plate, a motor is installed on the upper surface of the cooling bin, and a rotating rod is coaxially installed on a rotor of the motor; the motor is started, and finally, the gypsum powder can be in uniform contact with the surface of the cooling pipe, so that the gypsum powder can be uniformly cooled, and the cooling efficiency of the gypsum powder is improved; and the additionally arranged driving machine can finally control the retention time of the gypsum powder in the cooling bin, so that the retention time of the gypsum powder in the cooling bin is prolonged, and the device can fully cool the gypsum powder.

The utility model provides a solid-liquid extraction tower. The solid-liquid extraction tower is characterized in that a transmission shaft is connected with driving equipment; the fixed disc is fixedly mounted on the side wall of the solid-liquid extraction tower, and at least one fan-shaped through hole is formed in the fixed disc; the supporting ring is located between the first lantern ring and the second lantern ring and arranged on the transmission shaft in a sliding mode. The movable discs are in one-to-one correspondence with the fan-shaped through holes in size, shape and number, one side of each movable disc is rotationally connected with the side, away from the transmission shaft, of the fixed disc, the other side, close to the transmission shaft, of each movable disc is directly connected to the supporting ring in a lap joint mode, round through holes are formed in the movable discs, and the round through holes correspond to the fan-shaped through holes in position; when the movable disc is close to the fixed disc, the solid is intercepted on the fixed disc and is in full contact with the solvent; when the movable disc is far away from the fixed disc, the solid can fall down in an arc manner through the fixed disc and the movable disc, and the solid raw material can be uniformly distributed in the solvent under the stirring action when the liquid material flows, so that the extraction efficiency can be remarkably improved.

The invention provides a polyolefin elastomer polymer volatile component removal device and removal method, and relates to the technical field of polyolefin elastomer polymer devolatilization. The polyolefin elastomer polymer volatile component removal device comprises a shell assembly, the shell assembly is provided with a flash evaporation cavity and a first heating assembly arranged outside the flash evaporation cavity, and the flash evaporation cavity is provided with a raw material liquid inlet, a treatment liquid outlet and a gas phase pipe which are communicated with the outside; the second heating assembly is arranged in the flash evaporation cavity, and the second heating assembly is used for heating the polyolefin elastomer polymer in the flash evaporation cavity; the stirring assembly is arranged in the flash evaporation cavity, and the stirring assembly is used for stirring the polyolefin elastomer polymer in the flash evaporation cavity. According to the scheme, in the devolatilization process, the temperature distribution of the polymer in the flash evaporation cavity can be more uniform, local temperature runaway caused by low heat transfer coefficient of the polymer and coking caused by viscosity increase and tank blockage are prevented, and the device is easy to operate and has good economical efficiency and stability.

This utility model relates to the field of projection head-up display technology, specifically a projection head-up display structure. It includes a windshield (1), an adhesive layer (2), and flexible glass (3). The flexible glass (3) comprises a glass layer (4) and a coating layer (5). The flexible glass (3) is bonded to the windshield (1) via the adhesive layer (2). The radius of curvature of the flexible glass (3) and the surface curvature error of the windshield (1) are ≤0.3mm. The adhesive layer (2) is bonded to the inner surface of the glass layer (4) of the flexible glass (3), and the coating layer (5) is bonded to the outer surface of the glass layer (3). The projection head-up display structure of this utility model eliminates the need for a rear shell, reducing material and processing costs. It can cover the curved surfaces of windshields of different vehicle models and has advantages such as low processing and bonding difficulty, strong maintainability, and wide adaptability.

The application discloses a kind of based on continuous production silicon-carbon negative electrode material of gas deposition method system and method, characterized by including from top to bottom sequentially connected first silane gas deposition reactor, second silane gas deposition reactor, reaction product spiral air cooler and reaction product spiral water cooler, the top of first silane gas deposition reactor is connected with graphite feed bin, the bottom of reaction product spiral water cooler is connected with product bin;Hydrogen cylinder is connected with reaction product spiral air cooler and reaction product spiral water cooler respectively, nitrogen cylinder is connected with second silane gas deposition reactor and reaction product spiral water cooler respectively, silane cylinder is sequentially connected with the upper gas inlet of second silane gas deposition reactor by gas heat exchanger and gas preheater, the upper gas outlet of second silane gas deposition reactor is connected with the upper reflux port of first silane gas deposition reactor, advantage is to realize the uniform deposition of deposition source on substrate, and realize continuous production.

The invention discloses energy-saving heat exchange equipment for industrial wastewater discharge, and relates to the technical field of heat exchangers. The equipment comprises a centrifugal pump, a heat exchanger, a control cabinet and a filter box, the cold liquid outlet end of the heat exchanger communicates with a cold liquid discharge pipe, a first temperature sensor for detecting the internal temperature of the cold liquid discharge pipe is arranged on the surface of the cold liquid discharge pipe, and a second temperature sensor is arranged in the filter box; the surface of the cold liquid supply pipe is provided with a flowmeter for detecting the flow speed in the cold liquid supply pipe, the heat exchanger comprises a shell, an end socket and pipe plates, a heat exchange pipe is arranged between the two pipe plates, and the surface of the heat exchange pipe is slidably connected with a first cleaning plate and a second cleaning plate; and a driving structure for driving the first cleaning plate and the second cleaning plate to move in the length direction of the heat exchange pipe is arranged on the surface of the shell. According to the energy-saving heat exchange equipment for industrial wastewater discharge, efficient recovery and reutilization of wastewater heat energy are achieved, and the energy efficiency of industrial production is improved.

The present invention belongs to the technical field of regeneration oil furnaces, and discloses a vertical regeneration oil furnace. The vertical regeneration oil furnace comprises a furnace body, wherein a trough cylinder is arranged in the furnace body, and the top of the trough cylinder extends out of the furnace body and is welded with the lower surface of a special-shaped support plate. The vertical regeneration oil furnace can adjust the mechanical movement speed of the material on the trough bottom plate (furnace bed) by adjusting the number of movable scraper assemblies, adjusting the speed of the scraper mechanism, and other measures, and accurately control the residence time of the material in the trough cylinder (furnace), which can not only realize the residence time of the material in each temperature section (a temperature control section is composed of several sections of furnaces), but also control its residence time in each furnace, adopt a gentle material stirring and turning method, reduce the wear of the product, and ensure the uniformity of the product, help the mass transfer process, and also make a considerable contribution to the distribution characteristics of the temperature in the entire furnace, ensuring that the material obtains sufficient reaction conditions.

The utility model discloses multi-stage screening equipment for meat meal production. The multi-stage screening equipment comprises a shell, a driving mechanism and a chute, a first sliding groove is formed in the upper end of the inner wall of the shell, a large-diameter filter screen is slidably connected to the inner wall of the first sliding groove, a second sliding groove is formed in the middle of the inner wall of the shell, a small-diameter filter screen is slidably connected to the inner wall of the second sliding groove, and a fine material discharging opening is formed in the bottom end of the right side face of the shell; the driving mechanism is arranged in the middle of the right side face of the shell, the left end of the driving mechanism extends into the shell, and the driving mechanism is installed in cooperation with the large-diameter filter screen and the small-diameter filter screen; according to the multi-stage screening equipment for meat powder production, the size and amplitude of meat powder particles can be accurately controlled, the screening efficiency can be improved, the retention time of meat powder on a screening net can be more accurately controlled, the situation that the meat powder is screened or not screened is avoided, and the screening efficiency is improved. And the screening quality and reliability are improved.

The invention provides a modified straw paper production device based on nanocellulose and a process thereof, and relates to the field of straw paper production, the modified straw paper production device comprises a pulper case, a front pulp chest, a pulping machine, a rear pulp chest, a three-layer overlapping forming paper machine and straw paper; a latex coating structure is fixedly arranged on the outer side of the three-layer stacking net forming paper machine, and a drying assembly is fixedly arranged at the top of the latex coating structure. A driving structure is fixedly arranged at the top of the drying assembly, and a paper rolling device is fixedly arranged on the outer side of the latex coating structure. The modified cellulose solution is mixed with wood pulp, so that organic groups on cellulose can be released, and nanoscale cellulose is combined with wood fibers; meanwhile, the environment-friendly reinforced latex is coated on the surface of the straw paper, so that the stiffness and the water resistance of the straw paper can be improved; therefore, the softening time of the modified straw paper is prolonged, and the problem that paper straws in the market generally face a phenomenon that the straws are easy to soften and deform after meeting water is solved.

The present invention discloses a gasifier, characterized in that it comprises a reaction section and a quenching section, wherein the reaction section comprises a horizontally arranged front reaction section and a vertically arranged rear reaction section, wherein the front reaction section, the rear reaction section and the quenching section are sequentially connected; wherein an inlet for gasifying agent and solid materials to enter is provided at one end of the front reaction section away from the rear reaction section. The present invention has the advantages of good raw material particle size adaptability, high carbon conversion rate, etc.

This application provides a catalyst calcination apparatus, comprising: a solid material system including a preheating chamber, a calcination chamber, and a cooling chamber arranged sequentially from top to bottom, each chamber equipped with a gas collecting ring pipe and a gas distributing ring pipe, and the three chambers being sealed in sections by isolation valves; a circulating gas system located outside the calcination chamber, used to transport reducing gases and water vapor to the calcination chamber through the gas distributing ring pipe; and a water vapor circulating waste heat system located outside the cooling chamber, used to recover waste heat generated by the materials in the cooling chamber and generate superheated steam which is sent to the preheating chamber through the gas distributing ring pipe. This application employs a sectioned sealing structure, utilizing gravity to achieve continuous production during the calcination process. The introduction of the circulating gas system and the water vapor circulating waste heat system fully utilizes the chemical composition and calorific value of the exhaust gas generated during calcination, reducing carbon dioxide and harmful gas emissions. This apparatus significantly improves thermal efficiency, is energy-saving and environmentally friendly, and is applicable to the field of catalyst production equipment technology.

The invention relates to an integrated tower type circulating flow reactor with a separation function, which is applied to mass and heat transfer processes among gas, liquid and solid phases in fine chemical engineering, drug intermediates and the like, the upper part of the reactor is of a three-stage circulating flow structure, and an outer sleeve (7) of each stage is divided into an inner ascending circulating area and an outer descending circulating area by an inner net (5); the inner sleeve (5) is connected with the outer sleeve (7) through a bolt (6); a breather pipe (1), a gas distributor (2), a liquid collector (3), a solid collector (4), an inner sleeve (5), a bolt (6) and a gas outlet pipe (8) are sequentially arranged on the tower body from bottom to top; the interface and the external pipeline are sequentially a gas inlet gas supplementing pipe (a), a gas circulating pipe (c), a liquid discharging pipe (e), a liquid inlet pipe (d), a solid feeding pipe (f) and an exhaust pipe (b) from bottom to top; the liquid collector (3) is positioned in the middle of the equipment and between the liquid inlet pipe (d) and the liquid discharge pipe (e); the gas supplementing pipe (a) is connected with the gas circulating pipe (c) through the drainage ejector (9), and circulating gas is drained through supplementing gas. The integrated circulating flow reactor with the separation function is applied to the processes of fine chemical engineering, drug intermediate production and the like, integration of vapor-liquid-solid circulating fluidization and separation is achieved, the design and manufacturing cost is reduced, and the gas utilization rate is increased; and the problems of high energy consumption and many dead zones of the original stirred tank reactor are solved, and the heat and mass transfer efficiency is improved.

The utility model relates to the technical field of combustion tubes, in particular to a high-temperature-resistant combustion tube for a closed gas burner, which comprises an inner tube, an outer tube is sleeved on the outer wall of the inner tube, the right side of the inner tube is fixedly connected with a spray head connecting seat, and the left side of the inner tube is fixedly connected with a gas delivery tube connecting seat. A movable box is fixedly connected to the outer ring of the right side of the air conveying pipe connecting base, an adjusting box is fixedly connected to the front side of the movable box, a cooling mechanism is arranged in the outer pipe, and an adjusting mechanism is arranged in the adjusting box. Cooling of the inner pipe and adjustment of the residence time of cooling water are achieved, and durability and adjustability of the device are improved.