503results about "Centrifugal force sediment separation" patented technology

The invention belongs to the technical field of oil exploitation, and particularly relates to an oil exploitation device with a gravel filtering function. The oil exploitation device comprises a collecting frame, the inner bottom wall of the collecting frame is fixedly connected with a filtering cylinder through a supporting rod, the upper end of the filtering cylinder is fixedly communicated with two oil conveying pipes, and the two oil conveying pipes are both in butt joint with an oil pipeline; and the centrifugal separation mechanism is used for achieving separation of petroleum and gravel through the effect of centrifugal force, the centrifugal separation mechanism comprises filtering holes formed in the peripheral side wall of the filtering cylinder, and a rotational flow block is rotationally installed in the filtering cylinder. Through the arrangement of the centrifugal separation mechanism and the design that the upper portion of a rotational flow block is inclined and contracts inwards, mixed fluid is guided to form spirally-descending rotational flow, and petroleum is rapidly separated through filtering holes through centrifugal force; and by arranging the gravel conveying mechanism, a separation-conveying continuous operation chain is formed, and the blocking risk caused by gravel accumulation is thoroughly eliminated.

The present invention relates to the field of wastewater treatment technology, and more particularly to a process and apparatus for separating and recovering chromium and lead ions from wastewater. The apparatus comprises a flotation sedimentation tank equipped with an inlet pipe and a drain pipe, a feeding mechanism, and a dispersion mechanism. The flotation sedimentation tank is used to receive the wastewater to be treated. The feeding mechanism is disposed within the flotation sedimentation tank and is used to inject a reactant, a collector, and aeration gas into the flotation sedimentation tank. The dispersion mechanism is connected to the feeding mechanism and is used to disperse the reactant, collector, and aeration gas within the flotation sedimentation tank so that they come into full contact with the wastewater. The process comprises: introducing a reactant into the wastewater to cause the chromium ions and lead ions to react, respectively, to produce a chromium precipitate and a lead precipitate; introducing a collector into the wastewater to cause the lead precipitate to combine with the collector to impart hydrophobicity; aerating the wastewater to cause the lead precipitate to form froth; and separating and recovering the froth from the chromium precipitate. The present invention can achieve simultaneous separation and recovery of chromium and lead ions from wastewater, achieving high separation and recovery rates.

The invention relates to the technical field of rotational flow desilting devices, and particularly discloses a rotational flow desilting device for hydraulic engineering, which comprises a rotational flow desilting cylinder, a rotational flow assembly, a sand-water separation assembly, a conveying assembly and a control management unit, a discharging pipe is fixedly connected to the bottom of the rotational flow desilting cylinder, a control valve is fixedly connected to the interior of the discharging pipe, an electric valve is fixedly connected to the interior of the water inlet pipe, and the control management unit is used for monitoring and analyzing the running state of the rotational flow desilting cylinder in real time. According to the invention, through the arrangement of the control management unit, the traditional extensive mode depending on artificial experience judgment can be changed, so that the equipment operation information can be obtained more comprehensively, timely and accurately. Based on the data, different working conditions can be accurately identified, a basis is provided for parameter optimization, and the problem that traditional fixed parameter control cannot adapt to sewage characteristic changes is solved.

This invention discloses an air-lift cyclone sand separator, comprising a sedimentation tank and an air-lift device. The sedimentation tank has a sand-collecting hopper at its lower end, and a hollow shaft extending vertically is placed inside the sedimentation tank. A paddle is fixed to the lower end of the hollow shaft at the upper opening of the sand-collecting hopper. A driving device is fixed to the upper end of the sedimentation tank and connected to the upper end of the hollow shaft. The air-lift device includes an air-lift tank, an air-lift pipe, an air-purge pipe, and a sand-discharge pipe. The air-lift tank is housed within and communicates with the sand-collecting hopper. The air-lift pipe passes through the hollow shaft and communicates with the air-lift tank. The air-purge pipe passes through the hollow shaft and communicates with the sand-collecting hopper. The sand-discharge pipe passes through the hollow shaft and communicates with the air-lift tank. The paddle accelerates the rotation speed of the water flow in the sedimentation tank, allowing the sand to settle better. The settled sand is concentrated in the sand-discharge hopper. The air-lift pipe drives the water flow through the air-lift tank and into the sand-discharge pipe. The air-purge pipe disperses the sand in the sand-collecting hopper, allowing the dispersed sand to enter the sand-discharge pipe with the water flow, resulting in good sand removal efficiency.

This disclosure describes methods to separate solids from liquids in a production facility. A process separates components in the process stream by applying non-condensable media to create density differences and then using a mechanical device to separate the solids from the liquids based on the density difference. The process produces the liquids and solids, which may be further processed to create valuable animal feed products.

The utility model discloses a liquid-phase synthesis system of lithium sulfide. Comprising a first lithium sulfate dissolving device, a first barium sulfide dissolving device, a chemical combination reaction device, a first separation device and a second separation device, the liquid phase after-treatment unit is used for concentrating, purifying and drying the liquid phase to obtain lithium sulfide, and the solid phase after-treatment unit is used for washing and drying the solid phase to obtain barium sulfate; the first lithium sulfate dissolving device and the first barium sulfide dissolving device are both connected with a raw material inlet of the combination reaction device; and a reaction product outlet of the combination reaction device is connected with the first separation device. The liquid-phase synthesis system of the lithium sulfide has the advantages that products are easy to separate, the purity of the lithium sulfide products is high, the liquid-phase synthesis system of the lithium sulfide is very suitable for industrial-scale production, and the produced high-purity anhydrous lithium sulfide is very suitable for solid-state battery anode materials and has huge potential economic benefits.

The invention relates to a method for extracting and separating polyether polyol in waste salt slag by a water-based method, and belongs to the technical field of separation and purification. The method comprises the following steps: (1) slurrying extraction: mixing polyether polyol salt slag with water according to a certain mass ratio, and carrying out slurrying extraction under a stirring condition to obtain oil-water-salt mixed slurry; (2) performing centrifugal separation to obtain an oil-water mixture rich in polyether polyol; (3) demulsifying and layering to obtain a polyether polyol phase; and (4) refining and purifying: dehydrating the polyether polyol phase to obtain a recycled polyether polyol product. According to the method, water is used as an extraction solvent, so that the use of toxic and flammable organic solvents is completely avoided, the safety and health hidden dangers are fundamentally eliminated, and secondary organic pollution is avoided. By optimizing parameters such as the temperature and the liquid-solid ratio of extraction water and combining centrifugal separation, the polyether polyol can be efficiently extracted and separated from the thick salt slag, and the recovery rate can reach 95% or above.

The invention relates to the technical field of sewage treatment, in particular to an assembly type stacked hydraulic grit chamber for a sewage treatment plant. The assembly type stacked disc hydraulic grit chamber for the sewage treatment plant comprises a stacked disc module device, an unpowered water distribution device and a backwashing and fluidizing device, the stacked disc module device comprises a plurality of stacked discs which are sequentially arranged at intervals in the vertical direction, a water outlet channel is formed between every two adjacent stacked discs, and a water outlet is formed in the inner side of each stacked disc. According to the assembly type stacked disc hydraulic grit chamber for the sewage treatment plant, water flow is sprayed to the inner surface of the stacked disc through the cleaning disc assembly so as to wash the inner surface of the stacked disc, the automatic backwashing function is achieved, the problem of sand accumulation of the stacked disc is effectively solved, and sand hardening is prevented. Through the automatic backwashing function, the manual cleaning frequency and strength are greatly reduced, the manual labor intensity and potential safety hazards are reduced, the stacked trays are prevented from being blocked, and the service life of the stacked trays is prolonged.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastic via the polymerization of dienes prior to further treatments.

Some embodiments of the technology disclosed herein relate to a system having a hydrodynamic separator element defining an element inlet and an element outlet. The element outlet has a first element outlet and a second element outlet. The hydrodynamic separator element has a plurality of curved microfluidic channels in fluid communication. Each of the plurality of microfluidic channels are arranged to operate in parallel. Each microfluidic channel defines a channel inlet downstream of the element inlet and a channel outlet having a first channel outlet upstream of the first element outlet and a second channel outlet upstream of the second element outlet. A flow characteristic sensor is in sensing communication with the separator element. A controller is in data communication with the flow characteristic sensor, where the controller is configured to provide a first alert upon the flow characteristic being outside a first threshold.

A device for recovering entrained organic particles from an aqueous solution is provided. The device comprises a tank configured to receive a mixed solution through an inlet, wherein the mixed solution comprises an aqueous solution and organic particles, a plurality of curved impellers configured to impel a torque on the mixed solution, wherein in response to receiving the torque the mixed solution moves in a rotational motion within the tank, a deflector wall coupled to the floor extending vertically from the floor and surrounding the plurality of curved impellers to form an inner well configured to direct a flow of the rotating mixed solution towards a top surface of the tank, and a skim launder coupled to a boundary wall of the tank and positioned at the top surface, wherein the skim launder is configured to recover organic particles from the tank as they separate from the aqueous solution.

A hydrodynamic separator is configured to separate a liquid having dispersed particles. The separator has a substrate and a liquid channel defined by the substrate, where the liquid channel is configured to receive a liquid having a Reynolds number (Re) within the channel. The liquid channel has an inlet and an outlet and is curved to define an inner radius (RC). The liquid channel has a liquid channel length (LD) along the curve and a rectangular cross-section along the length of the curve, where the rectangular cross-section has a height, a width (w), and a hydraulic diameter (DH). The liquid channel length (LD) is greater than or equal to a linear focusing length (Lf), andLf=1598.8Rc⁢α⁢w2Re⁢DH3+6.4,where a is the particle diameter. The liquid channel length (LD) is greater than or equal to a linear focusing length (Lf), andLf=1⁢5⁢6.2⁢RcRe ⁢(wDH)2+24.3.In various embodiments the liquid channel length (LD) is greater than or equal to a linear focusing length (Lf), andLf=Re⁢w28⁢DH+2⁢4.3.

The present invention relates to the technical field of preparation of food and cosmetic raw materials. Disclosed are an antioxidant repair Ganoderma lucidum extract and a preparation method therefor. The preparation method comprises: mixing crushed fruit body of Ganoderma lucidum with pure water, and heating and dynamically extracting to obtain a crude extract; standing the obtained crude extract, naturally settling, filtering a supernatant by using a screen mesh, and collecting a crude filtrate; using a disc stack centrifuge to perform secondary impurity removal on the obtained crude filtrate so as to obtain a filtrate; performing fine filtration by using a ceramic membrane having a pore diameter of 400-1200 nm, and collecting a permeate; and finally, concentrating and drying to obtain an antioxidant repair Ganoderma lucidum extract. The preparation method of the present invention is simple to operate and low in cost, and has the advantage of large scale. The finished product is high in controllability and stability, and the Ganoderma lucidum extract which is wide in application and good in effect can be provided for the industries of food, health food, and cosmetics.

The utility model discloses a high-precision multilayer hydraulic cyclone desanding device which comprises a concrete pool body and a water inlet, the water inlet is located in the concrete pool body, one end of the water inlet is fixedly connected with a water distribution port, the end, away from the water inlet, of the water distribution port is fixedly connected with stacked discs, and the stacked discs are connected through stacked disc fixing pieces. The side, away from the stacking disc, of the stacking disc fixing piece is connected with a mounting frame, the top end of the mounting frame is fixedly connected with a mounting support, and a flushing system is arranged on the mounting frame. The bottom of the mounting bracket is connected with the whole desanding device, four mounting support legs are arranged on the periphery of the mounting bracket, the mounting support legs are connected with the concrete pool wall, in order to adapt to construction errors of the concrete pool wall, the mounting bracket can realize an adjusting space of + / -8cm, and in order to adapt to the shape of the concrete pool wall, the mounting support legs and the mounting bracket can realize 180-degree angle adjustment.

A device for recovering entrained organic particles from an aqueous solution is provided. The device comprises a tank configured to receive a mixed solution through an inlet, wherein the mixed solution comprises an aqueous solution and organic particles, a plurality of curved impellers configured to impel a torque on the mixed solution, wherein in response to receiving the torque the mixed solution moves in a rotational motion within the tank, a deflector wall coupled to the floor extending vertically from the floor and surrounding the plurality of curved impellers to form an inner well configured to direct a flow of the rotating mixed solution towards a top surface of the tank, and a skim launder coupled to a boundary wall of the tank and positioned at the top surface, wherein the skim launder is configured to recover organic particles from the tank as they separate from the aqueous solution.

To provide an inexpensive transfer system.SOLUTION: A transfer system 6 is provided in sand sedimentation 1 in which sand mixed in drainage settles and is accumulated on a bottom part 1a. The transfer system 6 includes: a tank 62 arranged upward from the bottom part 1a and stores liquid for sand collection; a first water supply pipe 63 extending from the tank 62 to the sand sedimentation 1; a discharge port 632 installed in the sand sedimentation 1; a container 71 that receives mixed liquid in which sand is mixed in drainage, into a space inside a container through an inflow port, and discharges from discharge port concentrated liquid in which density of sand with respect to drainage is high; and a storage tank 72 having the discharge port arranged inside the tank and storing the concentrated liquid obtained by the container 71. The discharge port 632 discharges the liquid for sand collection that has flowed through the first water supply pipe 63 and transfers a mixed object accumulated on the bottom part 1a. The container 71 sends liquid in the received mixed liquid, from a delivery port to the tank. An aperture area of the delivery port is equal to or greater than an aperture area of the discharge port.SELECTED DRAWING: Figure 2

The utility model discloses organic silicon resin separation equipment which comprises a device body, a separation barrel is arranged in the device body, a cover plate is arranged on the separation barrel, a heating plate is arranged in the separation barrel, a feeding port, a motor, an exhaust pipe and a connector are sequentially arranged above the cover plate, the lower portion of the motor is connected with a connecting rod, and the lower portion of the connecting rod is connected with an exhaust pipe. Stirring blades are installed on the connecting rod, a sealing pipe is arranged in the exhaust pipe in a sealed mode, one end of the sealing pipe is connected with an activated carbon adsorption tower, a discharging pipe is arranged on the activated carbon adsorption tower, a connecting pipe is installed in the connector, a three-way spray head is connected to the lower portion of the connecting pipe, a suction pump is connected to the upper portion of the connecting pipe, and one end of the suction pump is connected with a water tank. The separation barrel is connected with a discharging pipe and a residue discharging pipe, volatile low-molecular substances released by heating can be subjected to adsorption treatment, the concentration of the volatile low-molecular substances is reduced, the operation cost is low, implementation is easy, and harm of the volatile low-molecular substances to the human body is reduced.

A system and method of isolating extracellular vesicles. The method includes loading one or more of blood or bone marrow into an input port of a concentration system and centrifuging one or more of the blood or bone marrow to separate one or more of red blood cells, platelet poor plasma, or platelet rich plasma / bone marrow concentrate fractions via a centrifuge device. The method further includes pumping one or more of bone marrow / platelet rich plasma fractions and platelet poor plasma fractions into a receptacle of the concentration system and adding a concentrated aqueous two-phase solution to one or more of the bone marrow concentrate / platelet rich plasma fractions and platelet poor plasma fractions. The method also includes drawing the concentrated aqueous two-phase solution and one or more of the bone marrow concentrate / platelet rich plasma fractions or platelet poor plasma fractions back into the centrifuge device to isolate one or more of extracellular vesicles and platelet rich plasma / bone marrow concentrate fractions.

The invention discloses an integrated treatment process for heavy metal wastewater. The integrated treatment process comprises the following steps: step 1, pretreatment; 2, biological agent treatment; step 3, air flotation and magnetic separation; step 4, precipitation and separation; step 5, post-processing; step 6, magnetic medium separation and recovery; wherein in the second step, a biological agent adding unit and a hydrolysis reaction unit are included, the biological agent treatment unit comprises a stirrer, an agent adding ring and a guide cylinder, the stirrer comprises a stirring motor and a stirring impeller, the stirring impeller is connected with the stirring motor and inserted into the guide cylinder, and the agent adding ring is connected with the stirring impeller and synchronously rotates with the stirring impeller; the flow guide cylinder is provided with a turbulent flow ring, the turbulent flow ring comprises a ring body and cutting teeth, the ring body is installed in the flow guide cylinder, and the cutting teeth are arranged on the ring body. Compared with the prior art, the purposes of efficient treatment, stable water outlet, land occupation and cost saving and convenience in installation and extension are achieved.

The utility model discloses a rotary tangent water inlet device of a multi-layer rotational flow grit chamber, which comprises a stacked disc, a water distribution port component is spirally connected with the tangent angle of the stacked disc, the end part of the water distribution port component is connected with a water inlet component through a water segregator, the water inlet component comprises a water inlet, the vertical line direction of the water inlet is gradually reduced, and the vertical line direction of the water inlet is gradually reduced. The horizontal direction is gradually expanded, the gradually-shrinking angle is smaller than or equal to 15 degrees, the gradually-expanding angle is smaller than or equal to 10-20 degrees, and the gradually-shrinking angle is smaller than or equal to the gradually-expanding angle; the water flow enters the stacked disc from the outside of the stacked disc and rotates to enter the stacked disc through the tangent angle, so that the length of the water inlet device can be prolonged, the diverging ratio of the water inlet device and the inclination angle of the bottom edge of the lower portion of the water inlet device are adjusted, the flow speed changes stably, the turbulence degree is reduced, and the water flow is more stable when entering the stacked disc spiral flow cavity; the top elevation of the water inlet is higher than the upper edge of the top stacked disc by a certain height, and it is guaranteed that the water inlet liquid level elevation is higher than the water outlet liquid level elevation of the stacked disc, so that the device is driven by hydraulic power to operate.

The invention discloses a system and a method for extracting and filtering sweet-scented osmanthus liquid for sweet-scented osmanthus tea, and relates to the technical field of biological extraction. Comprising a stock solution tank, a filtering device and a storage tank which are sequentially communicated, and the filtering device is connected with an external nitrogen supply device and internally provided with a pre-separation unit, a microfiltration unit and an oil-water separation unit. In the pre-separation unit, a spiral feeding cavity is connected with a rotational flow cavity through a tangential channel, a screw rod and the rotational flow cavity form an annular rotational flow chamber, and an ultrasonic generator, a slag collecting chamber and a spiral slag discharging device are arranged; the microfiltration unit comprises a microfiltration cavity, and the stock solution in the rotational flow cavity is led to the bottom of the microfiltration cavity through a liquid distribution pipe and is filtered to a liquid collection chamber through a ceramic membrane pipe; a liquid inlet pipe of the oil-water separation unit is connected with a liquid collection chamber, and an upper component liquid outlet and a lower clear liquid outlet of an oil-water separation cavity are respectively connected with a storage tank to realize extraction and filtration of sweet-scented osmanthus component liquid. According to the invention, high-efficiency solid-liquid pre-separation, microfiltration and oil-water separation integrated purification of the sweet-scented osmanthus liquid and sesame oil recovery can be realized under nitrogen-sealed positive pressure conditions, membrane pollution is reduced, and aroma activity is maintained.

Methods and systems for separating material using a combination of a sieve bed and a gravity separator are included. Material is collected from the waste stream and passes through the screener. The collected larger material is then directed to a first gravity separator having a specific gravity. Plastic and residual metal are recovered.

The present invention is related to the field of tissue regeneration. It concerns more particularly new processes, tubes and devices for thrombin, platelet concentrate and wound healant preparations, alone or in combination with cell extracts, cell compositions and uses thereof.

The utility model belongs to the technical field of grate rotary kilns, and relates to a swirler slurry concentration control device for an oxidized pellet flue gas desulfurization system of a grate rotary kiln. The upper part of the swirler (1) is communicated with a first opening of the three-way opening (2), a second opening of the three-way opening (2) is communicated with the accident slurry tank (3), a third opening of the three-way opening (2) is communicated with the absorption tower (4), the accident slurry tank (3) is communicated with the upper part of an inner cavity of the swirler (1), the absorption tower (4) is communicated with the upper part of the inner cavity of the swirler (1), and the concentration sensor (5) is arranged at the bottom of the inner cavity of the swirler (1). The swirler slurry concentration control device of the grate rotary kiln oxidized pellet flue gas desulfurization system is simple in structure, on the premise that overflow water is not discharged, the overflow water of the swirler is treated, the phenomenon that CaSO3 is enriched in slurry is reduced, the condition of the slurry in an absorption tower is kept within a controllable range, and the service life of the swirler is prolonged. And the SO2 emission concentration continuously meets the environmental protection requirement.

The present application belongs to the technical field of blood separation, and particularly relates to a blood separator, which comprises an upper chamber, a middle chamber, a lower chamber, a connecting part, an injection hole, an injection needle with an air filter plug, a sealing cap and a sampling port. The injection needle with the air filter plug facilitates blood injection and prevents the blood from being polluted by the external environment. During the separation process, the liquid level in the chamber can be adjusted by extruding the upper chamber or the lower chamber, so that the target product reaches the highest possible purity, and the liquid level adjustment mode effectively solves the problem of liquid leakage. The upper chamber and the middle chamber, and the lower chamber and the middle chamber can be communicated or isolated by controlling the rotation angle of the rotating piston, which is convenient and fast.

The utility model discloses a two-stage thickening kettle which comprises a salt collecting hopper with a salt discharge port at the bottom, the top of the salt collecting hopper is connected with a barrel, an overflow flow guide weir is arranged at the top of the barrel, an overflow liquid discharge port is formed in the side direction of the overflow flow guide weir, a top cover is arranged above the overflow flow guide weir, and the salt collecting hopper, the barrel and the top cover are all hermetically connected to form a closed cavity; the two-stage thickening kettle further comprises a cyclone separator connected with the closed cavity in a sealed mode, a feeding port and a clear liquid outlet of the cyclone separator are both located outside the barrel, a heavy liquid outlet of the cyclone separator is located in the middle of the barrel, and the clear liquid outlet is provided with a valve. Through the coupling design of the cyclone separator and the closed cavity, the synergistic effect of first-stage hydraulic cyclone coarse separation and second-stage gravity settling fine separation is achieved. When the feed liquid treatment capacity is large and the feed concentration is low, the cyclone separator can pre-concentrate the low-concentration feed and discharge the clear liquid out of the system in advance, so that the subsequent treatment load is reduced.

The invention provides a wastewater treatment system and method for improving sludge settleability, the wastewater treatment system comprises a first treatment line, the first treatment line comprises an activated sludge tank, a secondary sedimentation tank and a classifier, the outlet of the activated sludge tank is connected with the inlet of the secondary sedimentation tank, the sludge outlet of the secondary sedimentation tank is connected with the activated sludge tank, and the outlet of the secondary sedimentation tank is connected with the classifier. An outlet of the activated sludge tank is connected with an inlet of the classifier, the classifier comprises a light component outlet and a heavy component outlet, and the heavy component outlet is connected with the activated sludge tank; and heavy components sorted by the sorter are conveyed into an activated sludge tank. With the adoption of the technical scheme, the part difficult to settle is separated out through wet separation and discharged as residual sludge, so that the settling performance of suspended biomass is improved, and the treatment capacity of the settling pond and the treatment capacity of the whole treatment system are improved; and the mixed liquid in the activated sludge tank is used as the feed of the classifier, so that compared with the traditional hydrocyclone, the energy consumption is reduced.

This invention relates to the field of geothermal extraction technology, and in particular to a geothermal extraction and irrigation device, comprising a heat exchange mechanism, wherein a heat exchange component is provided inside the heat exchange mechanism, and a heat outlet pipe is sleeved at one end of the heat exchange component; a purification mechanism, which is installed on the outer wall of the heat exchange mechanism, and includes a purification cylinder, wherein the upper and lower parts of the purification cylinder are cylindrical, and the middle part is an inverted cone, with the diameter of the upper cylinder being larger than that of the lower cylinder; and a liquid extraction mechanism installed on one side of the purification mechanism. This invention removes impurities through the purification mechanism, using centrifugal force to throw impurities such as mud, sand, and rock fragments toward the cylinder wall and let them settle to the bottom, where they are collected by the slag collection trough of the dust collection mechanism below. This design can effectively intercept complex fouling in the geothermal fluid, avoiding problems such as pipe wall erosion and pipe blockage caused by impurities entering the heat exchange pipe, thus ensuring the smooth operation and service life of the subsequent heat exchange system from the source.

The disclosure relates to the purification and treatment of oil produced from the liquefaction of waste polymer like for instance the pyrolysis of waste plastics via the polymerization of dienes prior to further treatments.

The invention relates to a limestone-gypsum wet desulphurization method and system.The method comprises the steps that desulfurized rich slurry is heated through a rich liquid heater and desorbed through a flash desorption device in sequence, obtained flash desorption steam is purified through a purification treatment unit, and desorbed sulfur dioxide gas can be obtained; and treating at least part of the desulfurized lean slurry by a gypsum treatment unit to obtain a gypsum product. By adopting the method disclosed by the invention, the discharge amount of the gypsum can be reduced and the quality of the gypsum can be improved while resource recycling of the sulfur is realized. Besides, the obtained desorbed sulfur dioxide gas can be converted into chemical products through subsequent process treatment, so that the current situation of sulfur resource shortage is relieved.