30 results about "Subsidence trough" patented technology

The invention relates to the technical field of coalification black water treatment, and particularly discloses a coal gasification black water flash steam waste heat steam turbine gradient utilization system which comprises a black water flash steam turbine module and a steam exhaust condensation module. The black water flash steam turbine module comprises a high-pressure flash evaporator, a low-pressure flash evaporator, a vacuum flash evaporator, a supplementary condensing steam turbine, a generator and a settling tank, and a water outlet of the vacuum flash evaporator is connected with the settling tank; the steam exhaust condensation module comprises an evaporative condenser and a condensate pump. Through the design of the scale scraping and water uniformizing piece, part of cooling water falling around the heat exchange coil from top to bottom falls on the water uniformizing plate to drive the water uniformizing plate to rotate, when the water uniformizing plate rotates, water on the water uniformizing plate is thrown out under the action of centrifugal force, cooling water without heat exchange can be uniformized to other heat exchange pipes for heat exchange, and the heat exchange efficiency is improved. Therefore, the cooling water flows more uniformly among the heat exchange coils, the utilization rate of the cooling water is improved, and the heat exchange efficiency is improved.

The utility model relates to a dual-power-supply switching system suitable for a settling tank stirring motor, which belongs to the technical field of aluminum oxide production control and comprises a main power supply, a standby power supply, a zero-cross detection module, an overload protection module, a power supply switching module, a relay driving module and a stirring motor. The main power supply and the standby power supply are both connected with a zero-cross detection module and an overload protection module, the zero-cross detection module and the overload protection module are both connected with a power supply switching module, the power supply switching module is connected with a stirring motor through a relay driving module, and the power supply switching module is further connected with a main controller and a standby controller. According to the utility model, the main power supply and the standby power supply can be automatically switched, the power supply fault problem or the overload problem caused by material deposition can be overcome, and the stable and continuous operation of the settling tank stirring motor in the aluminum oxide production can be ensured.

The invention discloses a coal gasification black water multi-stage deep treatment device and method, and relates to the technical field of water treatment.The coal gasification black water multi-stage deep treatment device comprises a flash tank, a settling tank, a mixing and clarifying tank, a partition plate, an overflow opening, a mixing cavity, a clarifying and stirring mechanism, a pressing plate, a water inlet tank and a fixed bin, the two sides of the fixed bin are open, and an adjusting plate is clamped in the fixed bin and horizontally and freely slides in the fixed bin; a water storage space is defined by the adjusting plate, the fixed bin and the partition plate. According to the device, the pressing plate moves downwards, so that the pressing plate extrudes an extraction liquid in the mixing cavity, part of the extraction liquid enters the water storage space from the water inlet groove under the action of pressure, then along with downward movement of the pressing plate, the liquid level of the extraction liquid in the water storage space rises, and the extraction liquid flows into the clarifying cavity from the overflow port; after entering the water storage space, the extraction liquid loses the acting force of the stirring mechanism, so that a relatively large turbulence phenomenon is avoided, the extraction liquid can flow into the clarification cavity at a relatively low flow speed, and the clarification efficiency is prevented from being influenced.

The invention relates to the technical field of coal washing and dressing, in particular to coal washing and dressing processing equipment and a washing and dressing method.The coal washing and dressing processing equipment comprises a jigging unit and a flow stopping unit, the jigging unit is used for coal washing and dressing, and the flow stopping unit is fixedly arranged in the jigging unit and used for slowing down backflow of washing and dressing liquid. After the rubber diaphragm moves and the agitating disc moves upwards to an upper dead center, the settling tank plate also drives the plurality of flow stopping rods to move upwards together, so that the plurality of flow stopping rods are inserted into the plurality of flow stopping grooves to prevent the water body at the top of the flow stopping plate from flowing back downwards, thereby ensuring that the water body flows back downwards in the downward resetting process of the rubber diaphragm and the agitating disc. And the water body at the top of the flow stopping plate cannot be sucked downwards, so that particles with small density are prevented from being drawn into the lower part, and a better washing effect is achieved.

The utility model relates to the technical field of coal chemical industry, in particular to a coal gasification black water circulation and black water waste heat recycling system. The coal gasification black water circulation and black water waste heat recycling system comprises a synthesis gas washing tower, a high-pressure flash tank, a low-pressure flash tank, a black water heat exchanger, a vacuum flash tank, a settling tank, a grey water tank, a low-pressure flash steam stripping tower and a high-pressure flash steam stripping tower. The coal gasification black water treated by the coal gasification black water circulation and black water waste heat recycling system disclosed by the utility model can be recycled as circulating water of a synthesis gas washing tower, so that the cyclic utilization of water resources is realized, the use of fresh water and the discharge of waste water are reduced, and the production cost and the environmental pressure are reduced. Meanwhile, the problem that a black water pipeline is scaled and blocked due to high temperature is solved, waste heat of the black water can be fully replaced for effective utilization, carbon is reduced, energy is saved, the purpose of cooling the black water is achieved, the cooling cost of a vacuum flash evaporation system is saved, and continuous and reliable economic benefits are created for enterprises.

The invention discloses a high-concentration split-flow type ore pulp concentration device, and belongs to the technical field of ore pulp concentration, the high-concentration split-flow type ore pulp concentration device comprises a concentration tank main body for stirring and settling ore pulp, the surface of the concentration tank main body is provided with a stirring and settling tank, and the bottom of the stirring and settling tank is arc-shaped; a circulating stirring structure for accelerating ore pulp stirring is mounted at the position of the stirring settling tank of the concentration tank main body and comprises a spiral feeding pipe which is fixedly connected with the bottom of the stirring settling tank and is used for conveying ore pulp upwards, and a bottom collecting cover for collecting the ore pulp is arranged on the outer side of the spiral feeding pipe; and a plate-type stirrer for multi-directional stirring is arranged below the bottom collection cover. By arranging the circulating stirring structure, ore pulp can be distributed to different layers of the stirring settling tank, rapid and efficient stirring of the ore pulp can be achieved, the ore pulp and a flocculating agent are fully mixed, and the concentration efficiency of the ore pulp is improved.

The utility model discloses a gasification waste heat recycling system, belongs to waste heat recycling equipment, and aims to solve the technical problems of production fluctuation, production reduction or production halt caused by non-uniform heat distribution. According to the technical scheme, the system comprises a high-pressure flash evaporation pipeline, a low-pressure flash evaporation pipeline, a boiler water cooler, a hot water heater, an intermediate water pump and a heat pump steam unit, gasification boiler water of the high-pressure flash evaporation pipeline and gasification boiler water of the low-pressure flash evaporation pipeline are mixed, then fed into the boiler water cooler, cooled by intermediate water of the boiler water cooler and then fed into the hot water heater. Returning to the settling tank from the outlet of the boiler water cooler through a settling pipeline; wherein the middle of the outlet end of the boiler water cooler is divided into two paths, one path enters the hot water heater, heating water from a heating station is heated by the hot water heater, then enters the middle water pump from the outlet end of the hot water heater, enters the boiler water cooler after being pressurized by the middle water pump, and circularly runs; and the other path enters the heat pump steam unit.

The present application relates to the separation process optimization field of light phase pitch, and discloses a process method for improving the yield of light phase pitch, comprising: fully mixing coal-based soft pitch raw materials and mixed solvents in a pipeline according to a preset ratio to form a uniform mixed solution; performing temperature raising treatment on the mixed solution, so that the mixed solution reaches a preset temperature interval; making the heated mixed solution enter a settling tank, and standing in the settling tank according to an optimal load to reach a preset optimal standing time; continuously taking out light phase pitch from a liquid outlet of a light phase solution tank at the upper part of the settling tank, continuously taking out heavy phase pitch from the bottom of the settling tank through a heavy phase pump during the taking-out process, continuously supplementing anthracene oil into the settling tank from the lower part of the heavy phase pitch solution settling tank during the taking-out process of the light phase pitch and the heavy phase pitch, and conveying the heavy phase pitch after being mixed with the anthracene oil to a rear-end process for solvent recovery and reprocessing.

The invention discloses a black water treatment system of a pulverized coal gasification device, which comprises a high-pressure flash tank capable of receiving high-temperature black water generated by a gasification furnace and releasing part of steam and dissolved gas through reduced-pressure flash; the low-pressure flash tank is connected with the high-pressure flash tank and is used for receiving the black water discharged by the high-pressure flash tank and further performing flash cooling on the black water; the S-shaped vortex runner plate heat exchanger is connected with a black water pipeline at the outlet of the low-pressure flash tank, an S-shaped vortex runner is arranged in the S-shaped vortex runner plate heat exchanger, and the S-shaped vortex runner plate heat exchanger is provided with a black water side channel and a desalted water side channel; and the settling tank is connected with an outlet of a black water side channel of the S vortex runner plate heat exchanger so as to receive the black water which is cooled to about 70 DEG C through heat exchange, perform solid-liquid separation and convey normal-temperature desalted water to a desalted water side channel of the S vortex runner plate heat exchanger through a pipeline.

The utility model belongs to the technical field of coal gasification solid waste treatment, and particularly relates to a device for treating gasified fine slag by adopting circulating fluidized bed oxygen-enriched combustion, which comprises a gasifier, a carbon black washing tower, a flash tower, a settling tank, a filter press and a circulating fluidized bed boiler, gasification black water outlets of the gasification furnace and the carbon black washing tower are sequentially connected with a flash tower, a settling tank and a filter press, a fine slag outlet of the filter press is connected with a circulating fluidized bed boiler, a secondary air opening is annularly formed in the lower portion of a hearth of the circulating fluidized bed boiler, and a primary air pipe at the bottom of the hearth of the circulating fluidized bed boiler is connected with an oxygen-enriched mixer. And the oxygen-enriched mixer is connected with the oxygen storage tank through an oxygen delivery pipe. According to the utility model, the harmless and resource utilization of the gasified fine slag is realized, the resource utilization efficiency of coal is improved, meanwhile, solid wastes generated in the gasification process are treated, and the energy-saving and environment-friendly significance is realized.

The utility model discloses a device for preparing coal water slurry through coal gasification fine slag flotation, which comprises a settling tank and is characterized in that the device further comprises a grading flotation tank and a coal mill, fine slag slurry at the bottom of the settling tank is pumped out through an underflow pump of the settling tank and sent to the grading flotation tank, and the coal mill is connected with the grading flotation tank. Fine slag slurry is separated into scum slurry and tailings in the grading flotation tank, the scum slurry overflows out of the grading flotation tank and is discharged to a coal mill to be mixed with raw coal, water and an additive to prepare water-coal slurry, and the tailings are discharged through a slag discharging opening in the bottom of the grading flotation tank after being subjected to gravity settling. The device disclosed by the utility model can realize efficient separation of gasified slag and slurry grading flotation to recover carbon-rich particles, so that the utilization efficiency of coal is improved, and the solid waste discharge of coal chemical enterprises is reduced.

The utility model belongs to the technical field of coal-based waste treatment, and discloses a fine slag recovery treatment system which comprises a settling tank and a black water buffer device, and the black water buffer device comprises a settling tank substrate pump, a black water buffer tank and a filter press feeding pump; a suction inlet of the settling tank substrate pump is communicated with the settling tank through a pipeline, a discharge port of the settling tank substrate pump is communicated with the black water buffer tank through a pipeline, and a suction inlet of the filter press feeding pump is communicated with the black water buffer tank through a pipeline; the filter pressing device comprises a filter press, a squeezing water tank, a squeezing water pump and a compressed air tank; a suction inlet of the squeezing water pump is communicated with the squeezing water tank through a pipeline, a discharge port of the squeezing water pump is communicated with the filter press through a pipeline, the squeezing water tank is connected with a desalted water pipe network, the compressed air tank is communicated with the filter press through a pipeline, and a discharge port of the feed pump of the filter press is communicated with the filter press through a pipeline; the utility model solves the problem that the water content of the existing fine slag filter cake is higher.

The invention relates to the technical field of wastewater treatment, in particular to a hot-process evaporative crystallization treatment system and method for high-salinity wastewater of a coal chemical industry evaporation pond, and the hot-process evaporative crystallization treatment system comprises a pre-precipitation module, an MVR evaporation module, a sedimentation module and a drying module; wastewater is preheated by a non-condensable gas preheater and a distilled water preheater, the preheated wastewater enters a crystallization separator and a forced circulation heater and is evaporated in the crystallization separator to form carnallite mother liquor, the carnallite mother liquor enters a settling tank for settling separation to generate thick slurry, and the thick slurry firstly enters a filter press for water removal and then enters the forced circulation heater for water removal. And drying in a drying machine to form solid carnallite. When the device is used, the treatment processes are effectively communicated and mutually coordinated, the concentration reduction capacity is improved, the impact load is dealt with, the drying reduction is realized, the energy consumption is reduced, the foaming influence of organic matters is reduced, the content of the organic matters in distilled water is reduced, the scaling influence of substances such as calcium and magnesium is reduced, and the long-term stable operation of the system is guaranteed.

The invention relates to the technical field of coal chemical industry wastewater treatment, discloses a multi-parameter cooperative control dosing method and system for a coal gasification settling tank, and solves the problems that existing manual or single-parameter dosing is low in precision, high in drug consumption, slow in response and difficult in effluent reaching the standard. The method comprises the following steps: monitoring turbidity, hardness, pH and temperature at a water inlet and a water outlet of a settling tank on line, calculating the dosage in a grading manner according to a sequence of hardness control priority, pH regulation second order and turbidity control last order, dynamically correcting the dosage in combination with a PID (Proportion Integration Differentiation) algorithm, and re-executing grading dosage if the effluent does not reach the standard. The method can improve the control precision, reduce the drug consumption, accelerate the response speed, and meet the green development requirements of the coal chemical industry.

The invention relates to the field of light-phase pitch separation process optimization, and discloses a process method for improving the yield of light-phase pitch, which comprises the following steps: fully mixing a coal-series maltha raw material and a mixed solvent in a pipeline according to a preset proportion to form a uniform mixed solution; heating the mixed solution to enable the mixed solution to reach a preset temperature interval; enabling the heated mixed solution to enter a settling tank, and standing in the settling tank according to an optimal load for a preset optimal standing time; light-phase asphalt is continuously extracted from a liquid outlet of a light-phase solution tank at the upper part of the settling tank, heavy-phase asphalt is continuously extracted from the bottom of the settling tank through a heavy-phase pump in the extraction process, and anthracene oil is continuously supplemented into the settling tank from the lower part of the settling tank of a heavy-phase asphalt solution in the process of extracting the light-phase asphalt and the heavy-phase asphalt; and the heavy-phase pitch and anthracene oil are blended and then conveyed to a back-end process, and solvent recycling and retreatment are carried out. Therefore, the light-phase asphalt with high yield and low impurity content is stably separated from the coal-series maltha raw material.

The application provides a method for increasing the concentration of coal water slurry by recycling coal gasification fine slag, which comprises the following steps: mixing black water treated by gasification flash treatment and a flocculating agent through a static mixer and then entering a black water settling tank for standing, forming high-concentration coal gasification fine slag water at the bottom of the black water settling tank, and directly sending the coal gasification fine slag water to a mill by a fine slag pump after pressurization; sending crushed coal to a raw coal bin for buffering, metering by a bottom coal weighing feeder and then entering the mill; adding coal water slurry additives and water into the mill, mixing and grinding the coal gasification fine slag, the crushed coal, the coal water slurry additives and the water in the mill to obtain high-concentration coal water slurry. The coal gasification fine slag is recycled to a coal water slurry preparation system, the particle size distribution of the coal water slurry is optimized, the stacking efficiency is improved, the concentration of the coal water slurry is increased, the production cost is reduced, waste is recycled, the gasification efficiency is improved, the gasification consumption is reduced, and the environmental protection benefit and the economic benefit are improved.

The utility model discloses a coal chemical industry discharge ash water long-period operation cooling system which is characterized by comprising a vacuum flash tank, a recycling branch and a discharge branch, the recycling branch comprises a first settling tank, a first grey water tank and a slag flushing system; the vacuum flash tank is sequentially connected with the first settling tank, the first grey water tank and the slag flushing system through a recycling pipeline; the discharge branch comprises a heat exchanger, a second settling tank, a second grey water tank and a biochemical treatment system, the heat exchanger is connected with a circulating water system, and the vacuum flash tank is sequentially connected with the heat exchanger, the second settling tank, the second grey water tank and the biochemical treatment system through a discharge pipeline.

The invention discloses a device and a method for recovering mercury in a copper smelting system. Comprising a smelting furnace, a smelting waste heat boiler, an adiabatic evaporation tower, a smelting electric dust collector, a spray cooling tower, a bag collector, a smelting high-pressure fan, an efficient washer, an inclined plate settling tank, a box type filter press, a supernate storage tank, a high-level water tank, a degassing tower, a waste acid storage tank, an acid mud packing station, an acid mud roasting furnace, a condenser, a mercury receiving container and a mercury collecting tank. Mercury is washed down in flue gas and enters acid mud, certain technological parameters such as the temperature of a roasting furnace and the temperature of an inlet of a condenser are controlled, mercury steam generated by roasting the acid mud is condensed and separated out, and the purity of the separated mercury can reach 99.9%. The method has the beneficial effects that the mercury element in the copper smelting flue gas is recovered, the recovery rate reaches 80%-85%, the flue gas is discharged after reaching the standard, resource waste is avoided, and economic benefits are improved.

The invention discloses a slime water pretreatment device, and belongs to the technical field of slime water pretreatment, the slime water pretreatment device comprises a sludge discharging assembly, a sludge blocking device and a water tank assembly, the sludge discharging assembly comprises a sludge collecting paddle with circular array arc-shaped paddles, a trigger device capable of automatically controlling a valve according to the amount of coal slime and a driving motor, and the sludge blocking device is provided with a sludge blocking inclined plate to realize secondary recovery of leaked sludge. The water tank assembly is of an inclined structure with a high water inlet end and a low water outlet end, a water baffle is arranged at the settling tank to slow down the flow speed, and during working, slime water flows in from the water inlet end and is slowed down through the inclined water tank and the water baffle, the slime is settled in the settling tank, and leaked slime flows back through the inclined mud baffle; the driving motor drives the mud gathering paddle to gather the coal slime and guide the coal slime into the mud discharging pipe, when the amount of the coal slime reaches the standard, the gravity pulls the mud discharging valve to be opened to discharge mud, when the amount is insufficient, the floating valve drives the mud discharging valve to be closed, discharging of thin coal slime water is avoided, and the efficient pretreatment device is provided for solving the problems that an existing device is low in coal slime sedimentation efficiency, large in loss and high in downstream energy consumption.

The invention discloses a coal gasification black water heat gradient utilization and residual pressure power generation integrated process, and belongs to the technical field of coal gasification. Black water with the temperature of 200 DEG C and the pressure of 4.0 MPa sequentially passes through three stages of heat exchangers, wherein the first stage heat exchanger exchanges heat with desalted water to generate steam with the pressure of 1.0 MPa (the temperature is controlled to be 180 + / -5 DEG C The second stage exchanges heat with grey water to output grey water of 150 DEG C (the temperature is controlled to be 150 + / -2 DEG C), and the grey water is increased to 5.5 MPa and sent to a washing tower; third-stage preheating desalted water (the temperature is controlled to be 70 + / -5 DEG C); after heat exchange, the black water is subjected to power generation and pressure reduction to normal pressure through a screw expander and enters a settling tank for separation; supernate flows back to the ash water tank, and part of ash water is circulated to the second-stage heat exchanger. A traditional flash evaporation process is replaced with three-stage heat exchange, heat gradient utilization and pressure energy power generation are achieved, the number of equipment is reduced, energy consumption is reduced, and meanwhile the operation reliability is improved through the anti-blocking heat exchanger and the standby circulating pump.

The utility model discloses a gasified grey water recovery system, belongs to coal gasification equipment, and aims to solve the technical problem of how to reduce the risk of scaling, pollution and blockage of grey water in cyclic utilization caused by high hardness and turbidity of the grey water and realize zero discharge of the grey water at the same time. According to the technical scheme, the device comprises a static mixer, a settling tank, a grey water tank, an electric reaction tank, an alkali adding reaction tank, a carbon dioxide reaction tank, a sedimentation tank, a water producing tank, a deaerator and a press filter, wherein the inlet end of the static mixer is respectively communicated with a black water inlet pipe and a flocculating agent feeding pipe; the outlet end of the static mixer is communicated with the settling tank through a settling tank water inlet pipe, the outlet end of the bottom of the settling tank is communicated with the press filter, and a grey water outlet pipe is arranged at the upper position of the middle of the settling tank and is divided into two paths: one path is communicated with the grey water tank through a grey water tank water inlet pipe; and the other path sequentially enters an electric reaction tank, an alkali adding reaction tank, a carbon dioxide reaction tank, a sedimentation tank and a water producing tank through a reaction tank water inlet pipe.

A kind of calcified biomass red mud quick solid-liquid separation device belongs to the field of solid-liquid separation after bauxite dissolution, including: stirring shaft, ore pulp feeding pipeline, venturi device, settling tank body, clear liquid overflow tank, spiral flow guide bucket, electromagnetic induction coil, rake, underflow outlet.Ore pulp feeding pipeline is arranged at the top of settling tank body, liquid inlet is connected with the horizontal direction of spiral flow guide bucket tangential, ore pulp feeding pipeline is additionally provided with venturi device, and multiple flocculating agent adding ports are installed at the narrow place of venturi device;Spiral flow guide bucket is arranged in the settling tank body and is fixed at the upper part of the settling tank, and the inside of spiral flow guide bucket is provided with spiral downward lines;Electromagnetic induction coil is additionally provided outside spiral flow guide bucket;Stirring shaft is deeply into the settling tank body, stirring shaft bottom is connected with rake by connecting rod, and red mud leaves the settling tank from underflow outlet;Clear liquid is discharged from the top of settling tank body by clear liquid overflow tank;The device realizes the rapid solid-liquid separation of bauxite dissolution ore pulp.

The present invention provides a model test device and a method for using the device for studying the effect of stratum loss rate on surface subsidence. The model test device includes a sand particle holding device, a test support platform, a tunnel shrinkage simulation device, a front transparent plate, a rear transparent plate, a strong magnet, and a camera. The test support platform is respectively provided with a front transparent plate and a rear transparent plate. The sand particle holding device is mounted on the test support platform. A through hole is provided at the bottom of the sand particle holding device. One end of the tunnel shrinkage simulation device is mounted within the sand particle holding device, and the other end is exposed through the through hole. The strong magnet is used to adsorb and fix the tunnel shrinkage simulation device located within the sand particle holding device to an appropriate position within the sand particle holding device. The camera is used to photograph and record the morphological changes and subsidence of the soil subsidence trough above the tunnel shrinkage simulation device. The present invention has the following beneficial effects: the model test device is simple, and the loading and unloading of soil particles does not require repeated disassembly of the device.

The utility model relates to the technical field of mining equipment, in particular to a water circulation system for humidifying aggregate, which comprises a sand washing tank, a blow-off pipe is connected to the bottom of one side of the sand washing tank, a sewage tank is mounted at the bottom of the sand washing tank, an outer port of the blow-off pipe is positioned above a collecting port of the sewage tank, and a sieve plate is mounted at the collecting port of the sewage tank. A waste residue separation assembly is arranged at one end of the top of the sieve plate, a settling tank is arranged on the other side of the sand washing tank, the top of the settling tank is connected with a spraying plate through a pipeline, and a plurality of nozzles are installed on the spraying plate and located above the sand washing tank. According to the water circulation system for humidifying the aggregate, the sand washing tank, the sewage tank and the waste residue separation assembly are arranged, so that sewage generated in the sand washing process is effectively collected and recycled. The recycled sewage is filtered and settled by the settling tank, so that impurities such as mud powder, stone powder and the like in the sewage can be removed, the sewage can reach the reuse standard, and the use amount of fresh water in the production process is reduced.

The utility model discloses a coal cinder filter pressing system which comprises a cinder water settling tank, the plate-and-frame filter press is communicated with the slag water settling tank and is used for carrying out filter-pressing water removal on the water-containing coal slag; and the feeding tank is arranged between the slag water settling tank and the plate-and-frame filter press and is used for caching the water-containing coal slag to be subjected to filter pressing and ensuring continuous slag water settling. The coal cinder filter pressing system solves the problem that the existing coal cinder filter pressing system is high in moisture content after solid-liquid separation and is not beneficial to effective utilization of resources. According to the scheme, the plate-and-frame filter press is used for dehydration treatment, and compared with an existing vacuum filter, the water content of waste residues after final treatment is lower, blending combustion use of coal cinder is facilitated, and the resource utilization rate is increased. In order to be matched with the use of the plate-and-frame filter press, the feed chute is arranged between the slag water settling tank and the plate-and-frame filter press, and the feed chute performs certain buffering, so that the time vacancy of the settling treatment process and the filter pressing treatment process can be made up, and the continuous operation of the whole filter pressing system is ensured.

The utility model belongs to the technical field of coal water slurry gasification, and particularly relates to a deslagging device for coal water slurry gasification coarse slag with low carbon content. Fine slag generated by combustion of the coal water slurry gasification furnace is high in carbon content, and coarse slag is low in carbon content; fine slag is inevitably mixed into coarse slag generated in the prior art, so that the carbon content of the coarse slag is high; through the cyclone separator, slag water discharged by the lock hopper of the coal water slurry gasification device is subjected to cyclone separation to obtain fine slag, and then coarse slag is subjected to dehydration treatment to obtain coarse slag with low carbon content; according to the utility model, the cyclone separator is arranged behind the lock hopper, so that the operation pressure and investment of the cyclone separator can be greatly reduced, and meanwhile, clarified black water generated by a coarse slag pool and a settling tank in the coal water slurry gasification device or ammonia-containing wastewater generated by the coal water slurry gasification device is used for the cyclone separator; compared with a coarse slag pulping and carbon separation technology in the prior art, the method has the advantages that the consumption of fresh water is greatly reduced, and the output of wastewater and the load of a wastewater treatment device are also reduced.

The utility model discloses a waste gas treatment system of a coal gasification device, and relates to the technical field of coal chemical industry, the system comprises a slag lock hopper, a slag pool, a slag pool pump, a slag conveyor, a slag conveyor, a vacuum flash tank, a vacuum flash tank top condenser, a settling tank, a flash vacuum pump, a gas phase compressor, a conversion device, a first waste gas conveying pipeline and a second waste gas conveying pipeline; the input end of the first waste gas conveying pipeline is connected with the slag discharging end of the slag pool, the output end of the first waste gas conveying pipeline is connected to the input end of the vacuum flash tank top condenser, the input end of the second waste gas conveying pipeline is connected with the slag conveyor, and the input end of the second waste gas conveying pipeline is arranged close to the slag discharging end of the slag conveyor. And the output end of the second waste gas conveying pipeline is connected to the input end of the vacuum flash tank top condenser. According to the application, the corrosion of the waste gas to the slag salvaging machine, the slag pool and easily-corroded equipment can be effectively reduced, the pollution to the environment is reduced, meanwhile, the waste gas can be recycled after being treated, and the waste of resources is reduced.

The utility model relates to a column type high-efficiency thickener which comprises an outer cylinder body, an inner cylinder body is arranged in the outer cylinder body, a middle partition plate is arranged in the inner cylinder body, the inner cylinder body is divided into an upper settling tank and a lower settling tank by the middle partition plate, and a rotational flow device is arranged on the middle partition plate. The upper end and the lower end of the rotational flow device are communicated with the upper settling tank and the lower settling tank respectively, an ore pulp feeding pipe is arranged on one side of the outer barrel and communicated with the rotational flow device, a flotation tank is arranged on one side of the inner barrel, and the flotation tank is communicated with the upper settling tank through a corrugated inclined grid device. The column type high-efficiency thickener disclosed by the utility model has a larger height-diameter ratio, is not easy to cause material blockage, not only can avoid the'rake pressing 'condition of the traditional thickener, but also can prolong the sedimentation distance, and can realize high-efficiency concentration of fine tailings.

The utility model relates to the technical field of novel coal gasification, and particularly provides a gasification black water additive improvement device which comprises a settling tank and a grey water tank, the inlet end of the settling tank is connected with a settling tank water inlet pipe, the settling tank water inlet pipe is connected with a static slow mixer, one path of the static mixer is connected with a black water inlet pipe, and the other path of the static mixer is connected with a flocculant tank. A flocculating agent is contained in the flocculating agent tank; the settling tank is connected with a grey water tank through a grey water tank water inlet pipe, the grey water tank is connected with a deaerator through a deaerator inlet pipe, the deaerator is connected with a deoxidizing pump through a deoxidizing water pump inlet pipe, the outlet end of the deoxidizing pump is connected with a deoxidizing pump outlet pipe, and the deoxidizing pump outlet pipe returns to the gasification system to be used as gasification chilling water and flushing water for recycling; a water inlet pipe of the grey water tank, an inlet pipe of the deaerator and an outlet pipe of the deaerating pump are jointly connected with a dispersing agent tank, and a dispersing agent is contained in the dispersing agent tank. Compared with the prior art, long-period and stable operation of the device can be guaranteed, and the use cost of chemicals is saved.

The present application relates to coal black water treatment technical field, specifically disclose a kind of coal gasification black water flash steam waste heat steam turbine cascade utilization system, including black water flash steam turbine module and exhaust steam condensing module;Black water flash steam turbine module includes high-pressure flash evaporator, low-pressure flash evaporator, vacuum flash evaporator, make-up condensing steam turbine, generator and settling tank, and the water outlet of vacuum flash evaporator is connected with settling tank;Exhaust steam condensing module includes evaporative condenser and condensate pump.The present application is designed by scale removal water uniformizing element, so that from top to bottom fall around heat exchange coil part of cooling water falls on water uniformizing plate and drives water uniformizing plate to rotate, when water uniformizing plate rotates, water on it is thrown out around under the action of centrifugal force, can not be carried out heat exchange cooling water uniform to other heat exchange pipe and carry out heat exchange, so that the flow of cooling water between heat exchange coil is more uniform, improve the utilization of cooling water, to improve heat exchange efficiency.