14results about How to "Reduce carry out" patented technology

The invention discloses a method for treating copper cobalt oxide ore, and belongs to the technical field of non-ferrous metal hydrometallurgy. The method comprises the following steps: carrying out critical leaching on the copper-cobalt oxide ore to obtain a leaching solution and leaching residues, returning the leaching residues to a wastewater and waste residue neutralization process, carrying out a sulfuration sectional copper-cobalt deposition process on the leaching solution to obtain two products of copper sulfide and cobalt sulfide, carrying out targeted adsorption cobalt recovery on the produced sulfurized solution, returning the desorbed solution to a critical leaching process, and carrying out secondary leaching on the desorbed solution. After adsorption, liquid enters a waste water and waste residue neutralization process, produced neutralization residues are piled up, and produced neutralization water is returned to a critical leaching process. The method sequentially comprises the key procedures of critical leaching, vulcanization segmented copper and cobalt deposition, targeted adsorption and waste water and waste residue neutralization. The process adopted by the invention has the advantages of short process flow, high recovery rate, zero discharge of wastewater and the like. Compared with a traditional process, the copper and cobalt leaching rates can reach 90% or above, and the cobalt recovery rate can be increased by 10% or above.

The invention discloses a cationic dye dyeable regenerated polyester fiber and a preparation method thereof, and relates to the technical field of polyester fibers, the cationic dye dyeable regenerated polyester fiber comprises the following components: waste polyester, sodium bis (2-hydroxyethyl) isophthalate-5-sulfonate and long-chain dihydric alcohol, the method comprises the following steps: mixing waste polyester, sodium bis (hydroxyethyl) isophthalate-5-sulfonate and long-chain dihydric alcohol according to a certain mass ratio, extruding the mixture in a twin-screw extruder, carrying out semi-depolymerization on the waste polyester by using the sodium bis (hydroxyethyl) isophthalate-5-sulfonate and the long-chain dihydric alcohol to obtain a semi-depolymerization product which is low-molecular-weight polyester with a hydroxyl-terminated structure, feeding the low-molecular-weight polyester into a polycondensation reactor, and carrying out condensation polymerization on the low-molecular-weight polyester with the hydroxyl-terminated structure to obtain the low-molecular-weight polyester with the hydroxyl-terminated structure. The prepared modified polyester can be directly spun or spun after being diced, and the prepared polyester fiber has a cationic dye normal-pressure dyeable effect, can remarkably reduce dyeing energy consumption and material consumption, has good hygroscopicity, improves wearing comfort and can be widely applied to the fields of clothes, home textiles and the like.

The utility model discloses a wheat-steeping ventilation overflow wheat-water separation water-saving device, which relates to the technical field of beer manufacturing equipment and comprises a wheat-steeping tank body, a separation component and a blanking groove body, a protection plate is arranged on the wheat steeping tank body, connecting frames are arranged on the inner wall of the protection plate, the connecting frames are evenly distributed in the circumferential direction with the protection plate as the circle center, the number of the connecting frames is multiple sets, and mounting rings are arranged between the multiple sets of connecting frames; the separation assembly is arranged on the barley steeping tank body and is used for separating barley from barley water in a use state; and the blanking groove body is arranged on the wheat steeping tank body. According to the utility model, the separation assembly is arranged, so that solid particles such as barley can be effectively intercepted in the barley steeping tank body in the overflow process and are prevented from flowing out along with water, more thorough wheat-water separation can be realized, and the separation efficiency is improved; and fluid dynamic characteristics in the wheat steeping tank body can be optimized, so that water flow is smoother, and meanwhile, the possibility that wheat is brought out by the water flow is reduced.

The device comprises an ash hopper shell, a flue is arranged on the outer side of the ash hopper shell, a plurality of hanging lug plates are symmetrically arranged on the inner walls of the two sides of the ash hopper shell, and a flow guide plate is arranged between every two corresponding hanging lug plates. According to the invention, the ash bucket structure in which the plurality of hanging lug plates and the guide plates are matched with each other is arranged in the ash bucket shell, so that a flow field can be changed by utilizing the additionally arranged guide plates, and dust in flue gas can be prevented from being directly taken out of the ash bucket shell by bypassing the flow field; moreover, due to the arrangement of the guide plate, the through-flow area of the ash bucket shell is reduced, the flow velocity of the flue gas is increased, the flue gas has a larger turn under the flow field deviation action of the guide plate, and the dust can be thrown to the bottom of the ash bucket shell to be deposited under the action of centrifugal force and gravity, so that the capture and the sedimentation of the dust are facilitated. And meanwhile, the contact area between the flue gas and the ash bucket shell is increased due to the arrangement of the guide plate, so that dust is better captured.

The invention belongs to the field of chemical engineering, and particularly relates to a method for recycling and preparing methyl acetoacetate. The method comprises the following steps: mixing the tower kettle residual liquid of a crude product diethyl methyl ester finished product tower with methanol by taking methanol as an extracting agent, keeping the temperature, stirring, and standing for layering; and taking the upper-layer methyl diethyl ester methanol solution for rectification, and stopping discharging when the kettle temperature rises to 56-60 DEG C to finally obtain methyl diethyl ester. The content of the prepared and recovered diethyl methyl ester is 95.23 to 96.53 percent, and the molar recovery rate of the diethyl methyl ester is 82.99 to 88.21 percent through calculation. According to the method, the loss of the diethyl methyl ester is reduced, the recovery rate of the diethyl methyl ester and the quality of a finished product are improved, meanwhile, harmless treatment is carried out on the tower kettle raffinate, the environmental pollution is reduced, and the waste treatment cost is reduced for chemical enterprises.

The utility model provides a smokeless tempering furnace, which belongs to the technical field of hot working, aims to solve the problem of environmental pollution caused by the fact that a small amount of smoke still flows out along with an opening when a workpiece in the tempering furnace is taken, and comprises a furnace body, a flue arranged at the top of the furnace body, an exhaust pipe connected with the flue, a door frame arranged at the opening end of the furnace body, and a smoke collecting hood arranged at the top of the door frame, the top of the rear side of the exhaust fume collecting hood is connected with an exhaust pipe through a branch pipe, a ventilation plate is arranged in the exhaust fume collecting hood, smoke suction pipes are vertically distributed on the two sides of the exhaust fume collecting hood and extend to the bottom of the opening of the furnace body, the tops of the smoke suction pipes are communicated with corresponding holes in the ventilation plate, a sealing plate is arranged in the portal in a sliding mode, and the problem that smoke leaks from the opening of the tempering furnace for taking treatment pieces is effectively solved.

The utility model relates to the technical field of lampblack waste gas purification, in particular to a lampblack waste gas spraying and odor removing device. The technical problems that residual grease and peculiar smell molecules are directly discharged to the external environment after waste gas treatment of an existing lampblack waste gas spraying and peculiar smell removing device, the atmosphere is polluted, and the urban air quality is affected are solved; according to the technical scheme, the lampblack waste gas spraying and odor removing device comprises a bottom plate, a spraying assembly, an air exhaust assembly, a waste liquid assembly, a liquid drop separation assembly, a gas-liquid contact assembly and an odor removing assembly; compared with the problem that residual grease and peculiar smell molecules are discharged into the environment to cause pollution during peculiar smell removal of a traditional lampblack waste gas spraying peculiar smell removal device, a method for separating out fine bubbles from a neutralizing agent is adopted in the lampblack waste gas spraying peculiar smell removal device; the oil smoke waste gas subjected to spraying treatment is converted into fine bubbles which are separated out from the bottom of the neutralizer, the contact area between the fine bubbles and the neutralizer is increased, and grease and peculiar smell molecules are effectively removed.

The utility model discloses an assembly type recyclable car washing platform protective shed structure, and mainly relates to the field of car washing platforms. Comprising a bottom plate, a plurality of water permeable holes are formed in the bottom plate, a plurality of fixing columns are symmetrically arranged on the side face of the bottom plate, fixing bases are movably connected to the fixing columns, a plurality of anchor bolt holes are formed in the fixing bases, a plurality of portal frames are arranged on the bottom plate, the bottoms of the portal frames are movably connected with the bottom plate, and protection plates are arranged on the outer sides of the portal frames. A plurality of fixing plates perpendicular to the portal frames are further arranged on the outer sides of the portal frames, the protection plates are located between the portal frames and the fixing plates, and the two ends of the fixing plates are movably connected with the two portal frames on the edges respectively. The construction site car washing platform has the advantages that the technical problem that an existing construction site car washing platform is not convenient to disassemble and assemble, and repeated utilization is affected can be solved, the construction site car washing platform is more convenient to disassemble, later replacement or maintenance is more convenient, the construction site car washing platform can be rapidly matched with a construction site with the position changed, and convenience of cyclic utilization is improved.

This utility model relates to the field of gas detection, and in particular to a condensation and separation device for gas detection. It includes a gas collecting mechanism comprising an inlet, an outlet on the inlet, and a condenser cylinder within the inlet; a condensation mechanism comprising a guide section within the inlet, a drainage section within the inlet, and an exhaust section within the inlet; and a turbulence mechanism comprising a drive section within the inlet and a turbulence section within the inlet. This condensation and separation device for gas detection uses a gas injection inlet pipe, where a fan drives a rotating rod and a turbulence plate to rotate, resulting in a more uniform air temperature distribution in the condenser cylinder and improving the efficiency and effectiveness of mixed gas condensation and separation. The funnel-shaped design of the guide plate and the curved design of the drainage pipe allow the condensed liquid to enter the exhaust chamber and be discharged through the guide plate and drainage pipe, reducing the possibility of condensate being carried out during exhaust.

The utility model discloses a kind of hydrogenation equipment of hydrogen peroxide production, comprising: working fluid filter assembly, working fluid heat exchanger, working fluid preheater, hydrogen filter, hydrogenation tower, hydrogenation vapor-liquid separator, hydrogenation liquid circulating pump group, hydrogenation liquid regeneration bed, hydrogenation liquid filter group, hydrogenation liquid storage tank, hydrogenation tail gas condenser and condensate measuring tank, the working fluid filter assembly is equipped with working fluid import and working fluid export, the working fluid import is suitable for passing into working fluid;The working fluid heat exchanger is equipped with working fluid side import, working fluid side export, hydrogenation liquid side import and hydrogenation liquid side export, the working fluid side import with the working fluid export of the working fluid filter assembly is communicated;The working fluid preheater is equipped with preheating import and preheating export, the preheating import with the working fluid side export of the working fluid heat exchanger is communicated.The utility model can increase heat energy utilization rate and improve tail gas recovery effect.

This utility model discloses a dust removal and cooling device for high-dust, high-concentration, ultra-high-temperature hydrogen gas, used for dust removal and cooling of the cracked gas produced by methane cracking for hydrogen production. It includes a dust collector and a cooling device. The dust collector comprises a gravity dust collection box and a water tank, with the gravity dust collection box nested within the water tank. The gravity dust collection box is used to deposit carbon powder in the cracked gas and has an ash hopper at its bottom. The water tank cools the gas entering the gravity dust collection box by supplying circulating water. The cooling device cools the cracked gas after dust removal by supplying circulating water. This dust removal and cooling device effectively solves the technical problems existing in the current methane cracking for hydrogen production process, such as difficulty in carbon-hydrogen separation under high dust, high concentration, and ultra-high temperature conditions, carbon powder blockage during hydrogen cooling, and difficulty in collecting carbon powder after high-temperature dust removal. The cracked gas undergoes subsequent cooling treatment only after a large amount of carbon powder is removed and after initial cooling and deceleration, which reduces the risk of blockage in the cooler.

The utility model relates to a simple combined passive collection device for dry and wet atmospheric deposits. The simple combined passive collection device comprises a vertically arranged dust accumulation cylinder and a funnel cover arranged above the dust accumulation cylinder, the funnel cover is provided with a first open end and a second open end, the size of the first open end is larger than that of the second open end, and the second open end is detachably connected to a top opening of the dust accumulation cylinder, so that the dust accumulation cylinder is communicated with an inner cavity of the funnel cover; the middle part of the inner cavity of the funnel cover is sequentially provided with a detachable isolation net plate and an anti-overflow grating from top to bottom, the anti-overflow grating is provided with an isolation hole for falling of a sediment, and the isolation hole extends to a certain height in the vertical direction. According to the simple combined passive collection device for the dry and wet deposits in the atmosphere, the large opening type design is adopted, so that the dry and wet deposits can enter the dust accumulation cylinder; meanwhile, an isolation net plate and an anti-overflow grid are arranged, turbulent flow in the dust accumulation cylinder can be weakened, and on the premise that collection is not affected, the situation that dry sediment in the cylinder is brought out by external airflow is reduced.

The invention discloses a bridge lifting system and method, and belongs to the technical field of bridge construction. A bridge lifting system comprises a fixing frame, a winch with a steel wire rope is fixedly arranged in a bearing beam, the bridge lifting system further comprises a fixing base, a hook is fixedly arranged at the bottom of the fixing base, a rotating cavity is formed in the fixing base, a rotating shaft is rotationally arranged in the rotating cavity, an annular groove is formed in the outer wall of the rotating shaft, and the steel wire rope is wound around the annular groove; the nozzle is used for spraying lubricating liquid into the annular groove and is fixedly arranged on the inner wall of the rotating cavity, a liquid supply part is arranged in the fixed seat, and a heat dissipation assembly is arranged on the rotating shaft; the nozzle used for spraying lubricating liquid to the rotating shaft is arranged in the fixing base, the friction force between the steel wire rope and the rotating shaft can be reduced, friction heat generated on the rotating shaft can be reduced, heat dissipation of the rotating shaft is facilitated by spraying the lubricating liquid, the cooling effect can be further improved by arranging cooling fins on the rotating shaft, and the service life of the rotating shaft is prolonged. And long-term stable operation of the winch is ensured.

The utility model relates to the technical field of chip removal machine chain plates, and discloses a chip removal machine chain plate structure and a chip removal machine. The chip removal machine chain plate structure comprises a chain plate body assembly, a baffle is arranged on the chain plate body assembly, a liquid drainage groove is formed in the welding position between the baffle and the chain plate body assembly, and the liquid drainage groove penetrates through a welding point at the bottom of the baffle. When the chain plate structure conveys scraps upwards, due to the fact that the liquid discharging groove is formed in the welding position between the baffle and the chain plate main body assembly, liquid such as cutting oil mixed with the scraps can flow down from the liquid discharging groove when the chain plate structure is lifted and conveyed upwards, solid-liquid separation of the scraps and the liquid is achieved, and the liquid brought out is reduced.