97 results about "Blackwater" patented technology

The utility model discloses a black water waste heat high-quality recycling system which comprises a high-pressure purification flash evaporator, a low-pressure purification flash evaporator, a high-flash tank and a low-flash tank, black water is sequentially subjected to four times of flash evaporation stripping, flash steam generated by the high-pressure purification flash evaporator and flash steam generated by the low-pressure purification flash evaporator respectively act with an evaporator to generate saturated steam, and the saturated steam is separated from the low-flash tank. The saturated steam can meet different process applications after being pressurized by the steam pressurizing device; the high-flash condenser is used for condensing high-flash steam discharged by the high-flash tank, non-condensable gas enters a torch treatment pipeline, and condensed water is recycled in the process; the low flash tank is used for receiving the liquid part discharged by the high flash tank; the low-flash condenser is used for condensing low-flash steam in the low-flash tank and then returning the condensed low-flash steam to a process system for recycling; and the demineralized water preheater is used for receiving part of the low-flash liquid discharged by the low-flash tank to preheat the demineralized water. According to the utility model, the waste heat of black water can be extracted in a grading manner and efficiently utilized.

The invention provides a black water waste heat recovery method and application, and belongs to the technical field of chemical engineering, the method is as follows: a black water pipeline from a gasification furnace is sequentially flashed through a high-pressure flash tank, a low-pressure flash tank and a vacuum flash tank and finally reaches a precipitation tank; a process pipeline is additionally arranged on the upstream of a black water pipeline adjusting valve at the bottom of a high-pressure flash tank, the process pipeline is connected to a shell pass of a high-pressure carbon dioxide heat exchanger in parallel and exchanges heat with a tube pass of the high-pressure carbon dioxide heat exchanger, the temperature is increased after heat exchange, and the process pipeline is sent to all users for use; after black water discharged from the high-pressure flash tank is subjected to heat exchange through the high-pressure CO2 heat exchanger, the temperature is reduced, the flow to the low-pressure flash tank is controlled by adjusting a downstream black water flow adjusting valve, the thermal load of the low-pressure flash tank is indirectly reduced, the flow to the vacuum flash tank is controlled by the low-pressure flash tank through a downstream black water adjusting valve, and the thermal load of the vacuum flash tank is reduced. And the vacuum pump of the vacuum flash is reduced or stopped according to the vacuum flash pressure condition, so that energy is saved. High-flash black water waste heat replaces low-pressure steam, and the true flash load is indirectly reduced.

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 utility model relates to an experimental device for simulating black water scouring corrosion material, including frame table, frame table right side is equipped with the water storage tank of storing black water of experimental use, and the left side upper portion in water storage tank has the scouring test area, adjustable clamp is provided in the scouring test area, adjustable clamp includes the lifting frame, the first clamping plate and second clamping plate are equipped with on the lifting frame, when the first clamping plate is close or far from the second clamping plate and moves, the material sample used in the experiment is clamped or loosened, and the water spraying pipe that sprays black water to the material sample is installed on the left side surface of water storage tank. The utility model clamps the material sample on adjustable clamp, and the material sample is circulated and scoured and corroded through the water spraying pipe, to simulate the complex environment under the actual condition, accurately test the corrosion resistance of metal material after being scoured by black water for a long time, and the overall structure is simple, convenient operation.

The present application relates to the technical field of industrial chemistry, and discloses a gasifier black water recycling process. The process mainly solves the problems of high energy consumption, low heat exchange efficiency caused by fouling and insufficient utilization of waste heat in the direct treatment of low-flash black water from a gasifier. The process steps include: introducing the low-flash black water generated by the gasifier into a pretreatment unit, injecting a composite scale inhibitor into the unit, and mixing to form a homogeneous dispersion system; sending the pretreated black water into a black water heat exchanger for indirect heat exchange with closed-circulation desalted water, the heated desalted water enters an ORC low-temperature generator set, and energy conversion is completed through an organic working medium circulation system to realize the conversion of heat energy into electric energy; the composite scale inhibitor is prepared by copolymer solution synthesis, modified additive preparation, and compounding with sodium polyepoxysuccinic acid and modified sodium lignosulfonate. The present application effectively prevents fouling of the heat exchanger, significantly improves the heat exchange efficiency and the stability of the system operation, and realizes efficient recovery and resource utilization of the waste heat in the black water.

The invention relates to the technical field of kitchen garbage treatment, and discloses a hermetia illucens breeding-based kitchen garbage degrading device which comprises a tank body, the sealing cover is arranged above the tank body; the hopper is arranged in the tank body; the crushing unit is arranged in the tank body and located below the hopper, and the crushing unit is used for crushing the fed kitchen garbage; the discharge valve is arranged below the tank body; the extraction mechanism is arranged on the tank body, and the slurry mixing mechanism comprises a rotating shaft rotationally arranged at the bottom in the tank body, a sleeve shaft fixedly connected to the surface of the rotating shaft, a plurality of groups of first stirring blades distributed on the peripheral edge of the sleeve shaft at equal intervals, and a reciprocating screw rod fixedly connected in the tank body. By arranging the slurry mixing mechanism and the adjusting mechanism, excessive liquid is actively separated, slurry is dynamically extruded, the efficiency of extracting the excessive liquid by the extraction pump is effectively improved, and the ingestion and conversion effects of hermetia illucens larvae on organic components are further improved by controlling the water content of the slurry to be proper.

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 system and method for heating desalted water by using waste heat of a black water gasification process, and belongs to the technical field of coal chemical industry energy conservation, and the system is additionally provided with a black water heat exchanger, a desalted water heat exchanger, a boiler water buffer tank and a circulating pump on an original net pipe. According to the method, a closed circulation loop with boiler water as an intermediate heating medium is constructed, high-temperature black water from a gasification furnace is subjected to indirect heat exchange with the boiler water in a black water heat exchanger, and waste heat is recycled; the heated boiler water is buffered and pumped and then indirectly exchanges heat with desalted water to be heated in the desalted water heat exchanger, so that the desalted water is heated to the required temperature and then fed into a boiler deaerator. According to the invention, direct replacement of desalted water heating steam by black water waste heat is safely and reliably realized, meanwhile, the black water cooling load is reduced, and remarkable energy-saving and consumption-reducing effects and economic benefits are achieved; clean boiler water is adopted as an intermediate heating medium, so that the risks of blockage, corrosion and cross contamination possibly caused by direct heat exchange are avoided.

The present application provides a coal gasification black water treatment device system and method, which adopts two-stage vortex separation devices for heat recovery and solid-liquid separation, wherein the secondary vortex separation device improves the solid-liquid separation effect by adding a specific composite medicament, and the treated grey water meets the requirements of the subsequent biochemical treatment; the coal gasification black water treatment device system cancels the high-pressure flash evaporation device, low-pressure flash evaporation device, deoxygenation device and sedimentation device required to be arranged in the traditional coal gasification black water treatment device system, and solves the problems of complex existing process flow, large equipment occupation area and low heat utilization rate.

A environmentally sustainable system for toilet flushing and blackwater disposal is described; a respective method of toilet flushing and blackwater disposal by a mechanical system is further described; the system comprises: a toilet bowl, a bowl valve, a pumping mechanism, a check valve, a driving shaft, a gearing mechanism; the method comprises: collecting a blackwater, moving a sealing element, engaging the sealing element, disposing the sealing element, pumping the blackwater, conducting a flow of the blackwater, operationally connecting a driving shaft, operationally connecting in a predefined gearing ratio of operation the pumping mechanism with the bowl valve and with the driving shaft.

The invention provides a preparation method and device of green fuel, and the preparation method of the green fuel comprises the following steps: 1) carrying out gasification treatment on biomass to obtain a gas mixture; 2) washing the gas mixture to obtain crude synthesis gas and black water; (3) sequentially carrying out water-gas conversion treatment and purification treatment on the crude synthesis gas to obtain purified synthesis gas; 4) performing grey water treatment on the black water to obtain salt-containing wastewater and grey water; the preparation method of the green fuel comprises the following steps of (1) preparing salt-containing wastewater, (2) purifying the salt-containing wastewater, (3) pre-treating the salt-containing wastewater, and carrying out electrolytic treatment to obtain electrolytic wastewater and hydrogen, and (4) mixing the purified synthesis gas with the hydrogen, and carrying out a synthesis reaction to obtain the green fuel. The preparation method of the green fuel can reduce the discharge amount of the high-salt-content wastewater and reduce the consumption of water resources.

The invention relates to the technical field of water treatment, in particular to a sewage separation and collection method and system based on a negative pressure source. Comprising a sewage source separation module, a negative pressure collection network, a multistage processing module, an intelligent control center, a safety monitoring module, an energy management module, a management module, a login module, an authority control module, an encryption transmission module, a block chain storage module and a prediction maintenance alarm module. The multi-stage treatment module comprises a black water advanced treatment unit, a grey water ecological treatment unit, a water quality improvement unit and a resource utilization unit; the negative pressure collection network is connected with the sewage source separation module, the multi-stage treatment module is connected with the negative pressure collection network, and the technical problems that in the prior art, when comprehensive intelligent management is achieved, operation and maintenance mostly depend on regular overhaul and post-event treatment, and accurate prediction and active maintenance of the system state are difficult to achieve are solved.

The invention belongs to the technical field of sewage treatment, particularly relates to river black and odorous water treatment equipment and a river black and odorous water treatment method, and provides the following scheme aiming at the problem of non-uniform dissolved oxygen caused by incapability of synchronously aerating and stirring black water by the existing black water treatment equipment: the river black and odorous water treatment equipment comprises a rack; the number of the floating blocks is two, the two floating blocks are fixedly connected to the rack and are symmetrically distributed with the transverse central axis of the rack as the center point, and the treatment equipment body is fixedly connected to the interior of the rack; the first filtering device is arranged on the left side of the treatment equipment body and used for intercepting large floating objects; the cleaning device is arranged on the rear side of the first filtering device and is used for cleaning the first filtering device; according to the invention, aeration and stirring work can be synchronously carried out on black water, so that the purpose of improving the uniformity of dissolved oxygen is achieved.

A urinal attachment for a toilet comprises a receptacle defining an interior cavity and a front aperture for receiving urine, a cover removably attached to the receptacle and configured to form a fluid-tight seal over the front aperture, and a base for supporting the receptacle in an upright orientation. An articulated connecting bar assembly is hingedly coupled between a rear wall of the receptacle and a hinged connection of the toilet, enabling movement between a stored position and first and second operable positions of differing height. A water dispensing system includes a flexible conduit and a faucet assembly integrated into the cover, and is configured to dispense pressurized water into the cavity for cleaning when the cover is closed. A blackwater discharge system includes a flexible conduit connected to a lower wall opening and configured to convey waste to the toilet bowl. The connecting bar assembly may be length-adjustable or telescopic to accommodate variable toilet geometries.

Provided herein are filtration systems for treating wastewater (e.g, grey water and / or blackwater). The wastewater filtration system can include, one or more inlet pipes, a first container comprising one or more vermifilters, a second container comprising one or more vermifilters and one or more plant species, a filter system and / or one or more outlet pipes. More particularly, the wastewater filtration system provided herein includes a macro-organism and / or microorganisms for primary and secondary treatment of wastewater. In some embodiments, the macro-organism comprises Eisenia fetida. In some embodiments, the macro- organism comprises a plant species. In some embodiments, the microorganism comprises a bacteria species.

The utility model discloses an anti-coking, impact-resistant and vibration-resistant adjusting ball valve for coal chemical industry black water, and relates to the field of adjusting ball valves. In coal chemical industry black water treatment, a black water medium has the characteristics of high suspended matter content, high temperature, high alkali content, high corrosion content and high-hardness solid particle content, and abrasion, corrosion, coking jamming and driving failure of traditional valve internals are easily caused. Comprising a fixing shaft, a left valve body, a right valve body, a left valve seat, a right valve seat, a ball body, a valve rod and an executing mechanism, the ball body, the valve seats and valve body flow channels are spray-welded with tungsten carbide layers with the hardness larger than or equal to HRC65, the left valve seat and the right valve seat achieve two-way pre-tightening sealing through spiral springs and the ball body, and scraper type cutting edges are arranged on the sealing faces of the valve seats. The valve rod adopts a large-diameter high-strength design and is in anti-rotation connection with the ball body, and the stuffing box adopts a disc spring load limiting and pressurizing structure. The wear resistance, impact resistance and coking resistance are remarkably improved, bidirectional reliable sealing is achieved, stable driving under the high-torque working condition is guaranteed, the service life of the valve is prolonged, and the valve is suitable for the coal chemical industry black water extreme working condition.

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 invention discloses a method for preparing a liquid fertilizer by intermittent aerobic multi-stage circulating fermentation of black water, which comprises the following steps of: 1, introducing the collected black water into an adjusting tank, uniformly stirring the black water by using a stirring mechanism in the adjusting tank, introducing the black water into a grating tank, and removing large-particle impurities in the black water; after impurity removal, introducing the black water into a first sedimentation tank to naturally settle part of solid substances in the black water; 2, the black water settled in the step 1 is introduced into a multi-stage fermentation unit for multi-stage circulating fermentation, intermittent aeration is adopted in each stage of fermentation, and the oxygen aeration rate is gradually increased along with the fermentation depth; the staying time of each stage of fermentation of the fermentation liquor is sequentially shortened along with the fermentation depth; and 3, naturally settling the fermented liquid, wherein the supernatant is the liquid fertilizer. The traditional black water and manure solid fermentation mode is changed, the pretreated black water is subjected to multi-stage aerobic circulating fermentation treatment, the black water is converted into valuable liquid fertilizer, and harmless treatment and resourceful treatment of the black water are achieved.

The utility model provides a gasification slag water treatment system capable of realizing on-line automatic switching of flash evaporation systems. The gasification slag water treatment system comprises at least two sets of flash evaporation systems, at least two sets of black water sedimentation systems and at least two sets of washing tower drainage systems, wherein each set of flash evaporation system is provided with a black water feeding pipe and a washing tower drainage feeding pipe in one-to-one correspondence with one set of black water settling system and one set of washing tower drainage system, and is used for feeding black water and draining water from the washing tower and carrying out flash evaporation treatment on the black water and the washing tower; the system further comprises a first communication pipeline and a second communication pipeline; the first communication pipeline is respectively communicated with each black water feeding pipe, and a first pneumatic switch valve is arranged at the position close to each black water feeding pipe; the second communication pipeline is respectively communicated with each washing tower drainage and feeding pipe, and a second pneumatic switch valve is arranged at the position close to each washing tower drainage and feeding pipe. The gasification slag water treatment system disclosed by the utility model can meet the requirement of on-line maintenance, realizes on-line automatic switching of the flash evaporation system, and improves the stability of the gasification slag water treatment system.

The invention discloses a water level regulation and control method and system of a black water flash steam exhaust waste heat recovery system, and belongs to the technical field of sewage and wastewater treatment. A hot water tower receives steam exhaust of a high-pressure flash tank, and the sprayed steam exhaust is subjected to waste heat utilization through a steam-water heat exchanger; one end of the condensation water tank is communicated with a condensation cavity of the phase change heat exchanger, and the other end of the condensation water tank is connected with the circulating spraying pipeline of the hot water tower. According to the method, a traditional static control mode of liquid level threshold triggering is abandoned, a dynamic water supplementing calculation model is constructed by fusing multiple key parameters such as the dead steam flow, the vacuum degree and the heat exchange efficiency, and the water supplementing amount is corrected in real time in combination with a PID algorithm. Experimental data show that after the new control method is adopted, daily average liquid level fluctuation is reduced to 1.87 m from 4.95 m, the reduction amplitude reaches 62.2%, heat exchanger impact vibration caused by mismatching of supplemented water and dead steam amount when the heat load suddenly changes is effectively avoided, and stable operation of the hot water tower and the phase change heat exchanger is guaranteed.

The utility model discloses sewage treatment equipment for black water treatment, and relates to the technical field of sewage treatment. A water inlet is formed in the top of a barrel, and a water outlet is formed in the side wall of the barrel; the vertical shaft is arranged in the barrel, the axis of the vertical shaft and the axis of the barrel are located on the same straight line, a motor is arranged at the top of the barrel, and the vertical shaft is in transmission connection with the motor; the grinding disc sleeves the vertical shaft and is used for synchronously rotating the vertical shaft; the filter hopper is arranged below the grinding disc and arranged on the vertical shaft in a sleeving mode, and the filter hopper and the vertical shaft rotate synchronously. The multiple stirring rollers are arranged on the upper surface of the filtering hopper and the upper surface of the grinding disc correspondingly, and a stirring shaft is arranged in the middle of each stirring roller in a penetrating mode; and the stirring rod is arranged on the vertical shaft below the filter hopper. The motor is arranged to drive the vertical shaft, the grinding disc and the filter hopper to rotate, meanwhile, the stirring roller rotates on the grinding disc and the filter hopper, and the stirring rod is arranged, so that black water can be effectively treated.

A method includes detecting, by a fresh water controller installed in a fresh water subsystem, a fresh water consumption in the fresh water subsystem and providing a respective first output signal to a grey water controller. The method includes determining, by a grey water controller based on the first output signal provided by the fresh water controller a control signal for the waste water diverter to switch the same either into the black water status or into the grey water status.

The utility model relates to an annular pipe device for cleaning sediments in a water system. The annular pipe device comprises a high-pressure flash tower, a riser and a remote control device, a gas rising pipe penetrates through the middle of the partition plate and is arranged in the middle of the high-pressure flash tower; a shielding part is arranged at the upper part of the riser; a high-temperature and high-pressure black water inlet is formed in the middle of the high-pressure flash tower, an evaporation chamber water outlet is formed in the bottommost part of the high-pressure flash tower, and a tower tray is arranged at the upper part of the high-pressure flash tower; a low-temperature process water inlet is formed above a tray at the upper part of the high-pressure flash tower; a gas phase outlet is formed in the top of the high-pressure flash tower; an annular pipe pollution discharge module is arranged at the bottom of the partition plate; the annular pipe pollution discharge module comprises an annular pipe, and a first pipeline, a second pipeline and a third pipeline which are connected with the annular pipe; N holes are formed in the annular pipe at fixed intervals; a first valve is arranged between the first pipeline and the second pipeline; and a second valve is arranged between the second pipeline and the third pipeline.

The utility model belongs to ship technology field discloses marine wastewater treatment system and polar ship, the output of the black water collection cabin of marine wastewater treatment system can selectively communicate or disconnect with the input of sewage treater, the sewage treater is used for filtering, depositing and disinfecting the wastewater that black water collection cabin output, the output of the grey water collection cabin can selectively communicate with the input of primary filter assembly or wastewater discharge outlet, the water output of primary filter assembly can selectively communicate with the input of grey water collection cabin or the input of secondary filter assembly, the water output of secondary filter assembly can selectively communicate with clean water collection cabin or disconnect, the water output of sewage treater can selectively communicate with the input of grey water collection cabin or wastewater discharge outlet, primary filter assembly and secondary filter assembly are all used for filtering the wastewater that grey water collection cabin output, the working flexibility of marine wastewater treatment system is good, wastewater treatment quality is high, and can save freshwater resources.

The application provides a kitchen waste full-amount resource utilization method, and belongs to the technical field of waste resource utilization, which comprises the following steps: three-phase separation of kitchen waste to obtain kitchen solid residue, kitchen wastewater and swill oil; resource utilization of the swill oil; biological conversion of the kitchen solid residue and the kitchen wastewater by black soldier fly; and preparation of animal liquid feed by fermentation of the kitchen wastewater, so that full-amount resource utilization of kitchen waste is realized. In addition, the kitchen wastewater is further used as a nutrition regulator and a moisture regulator for the breeding and development of black soldier fly, so that black soldier fly with high content of nutritional ingredients and high-quality worm sand organic fertilizer raw materials are obtained; the black soldier fly and the kitchen wastewater produced by biological conversion are used as a nitrogen source and a phosphorus source for co-fermentation to prepare liquid feed, so that full-amount resource utilization of the kitchen wastewater is finally realized.

The utility model relates to the technical field of waste heat recovery, and discloses a black water waste heat efficient power generation system which comprises a multi-stage flash evaporation device, a heat exchange device, a power generation device and a condensation recovery device. The heat exchange device is used for receiving flash evaporation steam generated by the multi-stage flash evaporation device, carrying out heat exchange and condensing the flash evaporation steam into liquid, and the power generation device is used for receiving clean steam generated by the heat exchange device for power generation; and the condensation recovery device is used for cooling the non-condensable gas and steam generated by the multi-stage flash evaporation device and the heat exchange device, recovering condensed water and disposing the non-condensable gas. According to the utility model, the multi-stage flash evaporation device is adopted to carry out stage-by-stage flash evaporation treatment on the high-temperature black water produced by the gasification furnace to generate flash evaporation steam with different pressures, so that waste heat resources in the black water are fully utilized, and the utilization rate of the waste heat of the black water is improved.

The utility model provides an automatic siphon breaking device for an outlet of a substrate pump of a settling tank. The automatic siphon breaking device comprises the substrate pump, a black water buffer tank and an automatic siphon breaking device, the automatic siphon breaking device comprises a pi-shaped pipeline and a check valve, the pi-shaped pipeline is communicated with an outlet of the substrate pump and a connecting pipeline of the black water buffer tank, the check valve is arranged at the high point of the pi-shaped pipeline, and the check valve is connected with the pi-shaped pipeline. According to the automatic siphon breaking device, automatic siphon breaking is achieved through connection of the pi-shaped pipeline and the check valve. When the substrate pump is stopped, the check valve is automatically opened to cut off the siphon passage, so that black water is prevented from flowing to the black water buffer tank, and overflow is avoided; and when the substrate pump is started, the check valve is automatically closed, and a normal circulation path is recovered.

The utility model relates to the technical field of sewage treatment, in particular to a black water pressure reduction tank, which comprises a tank body, a water inlet arranged at the top end of the tank body and a water outlet pipe arranged on one side of the tank body, and is characterized by comprising a bottom plate detachably connected to the bottom of the tank body and a pressure reduction structure arranged on the bottom plate, a wear-resisting plate is arranged on the upper surface of the bottom plate; in practical application, black water is fed into the tank body through the water inlet, the black water is decompressed through the decompression structure, and the decompressed black water is discharged through the water outlet pipe; bottom plate abrasion caused by direct impact of black water on the bottom plate is avoided through the pressure reduction structure, so that the bottom plate does not need to be dismounted and replaced frequently, and the working stability of the gasifier system is better; the pressure reducing effect of the black water can be improved, the buffer tank does not need to be frequently detached to replace the bottom plate, and the working stability of a gasification furnace system is guaranteed.