Waste liquid evaporation treatment equipment and evaporation process for waste alkali liquid treatment

Abstract

The invention relates to the technical field of waste lye treatment, and discloses waste liquid evaporation treatment equipment and an evaporation process for waste lye treatment.The waste liquid evaporation treatment equipment comprises an evaporation assembly, a feeding assembly is arranged on one side of the evaporation assembly, an agent assembly is arranged on the outer side of the feeding assembly, and valve assemblies are arranged in the agent assembly and the feeding assembly; a heating assembly is arranged on one side of the evaporation assembly, and a circulation assembly is arranged between the heating assembly and the evaporation assembly. According to the device, the rotating end of the valve assembly is rotated, so that the waste alkali liquid and a defoaming agent can flow into the feeding assembly at the same time and are mixed, and under the assistance of the defoaming agent, the waste alkali liquid does not generate a foam phenomenon when being evaporated; therefore, a medium in the heating assembly can better exchange heat with the waste alkali liquid which continuously circulates, and meanwhile, the actual evaporation capacity of the evaporation crystallizer is not reduced when the waste alkali liquid is evaporated, so that the energy consumption and the operation cost are reduced when the equipment works.

Description

Technical Field

[0001] The invention relates to the technical field of waste alkali liquid treatment, in particular to waste liquid evaporation treatment equipment and an evaporation process for waste alkali liquid treatment. Background Art

[0002] Waste alkali liquid is a waste liquid containing a large amount of pollutants produced by the use of NaOH solution to absorb H2S, alkali-washed oil and cracked gas in the petrochemical production process. Since the pH of the waste alkali liquid is very high, in order to avoid damage to the environment caused by the waste alkali liquid, the pH of the waste alkali liquid needs to be adjusted to neutral by waste acid, and then the treated waste alkali liquid is treated by an evaporation crystallizer, so that the alkali in the waste alkali liquid can be recovered by crystallization.

[0003] The main component of the waste alkali liquid after neutralization treatment is inorganic salt sodium sulfate, but the waste alkali liquid has the characteristic of high COD, and it is easy to foam during the ordinary evaporation and crystallization process. Since the space of the evaporation crystallizer is limited, the presence of foam will reduce the contact area between the liquid and the heating surface, and the foam may cover the heating tube, so that the heat cannot be effectively transferred to the liquid. Due to the influence of foam, the actual evaporation amount of the evaporation crystallizer when evaporating the waste alkali liquid will be reduced, which prolongs the time required for evaporation and increases energy consumption and equipment operating costs.

[0004] Currently, no effective solution has been proposed for the problems in the related technologies. Summary of the invention

[0005] 1. Technical issues to be resolved In view of the deficiencies in the prior art, the present invention provides a waste liquid evaporation treatment equipment and an evaporation process for treating waste alkali liquid, which have the advantages that the waste alkali liquid is not easy to generate foam when evaporating, and solves the problem that due to the influence of foam, the actual evaporation amount of the evaporation crystallizer when evaporating the waste alkali liquid will be reduced, the time required for evaporation is prolonged, and the energy consumption and equipment operation cost are increased.

[0006] (II) Technical solution In order to solve the technical problem that the above-mentioned waste liquid evaporation treatment equipment and the evaporation process for treating waste alkali liquid are prone to generate foam when evaporating the waste alkali liquid, the present invention provides the following technical solutions: A waste liquid evaporation treatment device comprises an evaporation component, a feeding component is arranged on one side of the evaporation component, a medicine component is arranged on the outside of the feeding component, a valve component is arranged inside the medicine component and the feeding component, a heating component is arranged on one side of the evaporation component, the heating component is connected to the evaporation component, and a circulation component is arranged between the heating component and the evaporation component; The valve assembly is used to control the flow rate of the feed assembly and the reagent assembly. The feed assembly is used to transport the waste alkali liquid to the interior of the evaporation assembly. The reagent assembly is used to put the reagent into the waste alkali liquid flowing inside the feed assembly. The circulation assembly allows the waste alkali liquid to flow between the evaporation assembly and the heating assembly, and the heating assembly heats the flowing waste alkali liquid.

[0007] Preferably, the evaporation component includes a sedimentation cylinder, an evaporation cylinder is fixedly installed on the top of the sedimentation cylinder, a convergence cover is fixedly installed on the top of the evaporation cylinder, a storage groove is provided on the inner wall of the convergence cover, a connecting cylinder is movably connected inside the storage groove, a plurality of corrugated plates are fixedly connected to the inner wall of the connecting cylinder, a positioning hole is provided on the top of the evaporation cylinder, a positioning rod is inserted into the inside of the positioning hole, and the positioning rod is fixedly connected to the convergence cover.

[0008] Preferably, the feed assembly includes a connecting seat, the connecting seat is fixedly connected to the evaporating cylinder, a feed port is opened on one side of the connecting seat, and an L-shaped feed pipe is fixedly installed on one side of the connecting seat.

[0009] Preferably, the medicine assembly includes a support frame, which is fixedly installed on the outer surface of the sedimentation cylinder, and the interior of the support frame is fixedly connected to the medicine cylinder, the bottom of the medicine cylinder is fixedly connected to a drug administration tube, the inner wall of the L-shaped feed pipe is fixedly connected to a one-way valve corresponding to the drug administration tube, the drug administration tube and the one-way valve are fixedly connected together, and the top of the medicine cylinder is threadedly connected to a sealing cover.

[0010] Preferably, the inner wall of the L-shaped feed pipe is fixedly connected to a support plate, one side of the support plate is rotatably connected to a rotating roller, the outer surface of the rotating roller is fixedly connected to fan blades and a stirring frame, and a plurality of fan blades and stirring frames are arranged in a circular array.

[0011] Preferably, the valve assembly includes a rotating shaft, which is arranged inside the L-shaped feed pipe and the dosing pipe, and the two rotating shafts are rotatably connected to the support frame. The outer surface of the rotating shaft is fixedly connected to a sealing plate, the outer surface of the rotating shaft is fixedly connected to a sprocket, the outer surface of the sprocket is meshed with a chain, and one end of the rotating shaft is fixedly connected to a control disk.

[0012] Preferably, the heating assembly includes a heating box, the inner wall of which is fixedly mounted with a diverter box, two of which are provided with a plurality of diverter holes on opposite sides of the two diverter boxes, a heating tube is fixedly mounted corresponding to the diverter holes between the two diverter boxes, a connecting tube is fixedly connected to the top of the upper diverter box, one end of the connecting tube is fixedly connected to a steam compressor, an air inlet end of the steam compressor is fixedly connected to a steam pipe, the steam pipe is fixedly connected to the top of the converging cover, and an outflow pipe is fixedly connected to the bottom of the lower diverter box.

[0013] Preferably, the circulation component includes an extraction pipe, one end of the extraction pipe is fixedly connected to the sedimentation cylinder, and the other end of the extraction pipe is fixedly installed with a circulation pump, the output end of the circulation pump is fixedly connected to a transport pipe, the port of the transport pipe is located at the lower diversion hole, a return pipe is fixedly connected to the outer side of the evaporating cylinder, one end of the return pipe is located inside the upper diversion hole, a plurality of U-shaped tubes are fixedly connected to the corresponding diversion holes inside the two diversion boxes, the U-shaped tubes are located inside the corresponding diversion holes, the ports of the transport pipe, the return pipe and the U-shaped tube are all provided with sealing grooves, a sealing ring is inserted inside the sealing groove, a guide pipe is fixedly connected to one side of the sealing ring, and a plurality of guide pipes corresponding to the diversion holes are arranged between the two diversion boxes.

[0014] An evaporation process for treating waste alkali liquid comprises the waste liquid evaporation treatment equipment, which is used to separate the neutralized waste alkali liquid by evaporation crystallization and salt removal through a combination scheme of "dissolved air flotation system + single-effect evaporation crystallizer + centrifuge" to achieve the purpose of zero discharge of waste liquid; specifically, the neutralized waste alkali liquid enters the dissolved air flotation system, and the floating oil is scraped and sent out through flocculation and gas separation; then it enters the "circulating heat exchanger + circulating pump + gas-liquid separator" evaporation system, the waste alkali liquid is gradually concentrated in the evaporation system, and finally concentrated into a supersaturated solution, and then a crystallized product is formed; after the number and particles of the crystals reach a set threshold, they are sent into a thickener by a discharge pump, and the supersaturated liquid after thickening enters a salt removal dehydrator for solid-liquid separation, and the separated solids are stacked for external transportation.

[0015] An evaporation process for waste alkali liquid treatment: The specific method of using the waste liquid evaporation treatment equipment to evaporate and crystallize the neutralized waste alkali liquid is as follows: the control disk is used to rotate the corresponding rotating shaft, and the two rotating shafts drive the corresponding sealing plates to rotate under the drive of the sprocket and the chain, at this time, the waste alkali liquid with the floating oil scraped off flows into the inside of the L-shaped feeding pipe, and the defoaming agent in the medicine cylinder flows into the inside of the L-shaped feeding pipe through the dosing pipe; The waste alkali liquid flowing inside the L-shaped feeding pipe drives the fan blades to rotate, and the fan blades drive a plurality of stirring racks to rotate through rotating rollers, so that the stirring racks stir the waste alkali liquid and defoaming agent inside the L-shaped feeding pipe; The waste alkali liquid that has been stirred flows into the interior of the evaporation cylinder through the feed port, and at the same time, the waste alkali liquid in the evaporation cylinder directly flows into the interior of the sedimentation cylinder, and the circulating pump extracts the waste alkali liquid in the sedimentation cylinder through the extraction pipe, and the extracted waste alkali liquid passes through the interior of the heating box under the guidance of the transport pipe, a plurality of guide pipes, a plurality of U-shaped pipes and a reflux pipe and flows into the interior of the evaporation cylinder again; At the same time, the steam compressor transports steam to the upper side of the diverter box through the connecting pipe, and the steam in the diverter box exchanges heat with the waste alkali liquid in the guide pipes through the diverter holes and the heating pipes, and the condensed water converted from steam flows out through the outflow pipe; After the heated waste alkali liquid flows into the interior of the evaporation cylinder, the generated steam flows upward and flows into the interior of the steam compressor through the steam pipe, and the waste alkali liquid repeats the above flow again.

[0016] (III) Beneficial effects Compared with the prior art, the present invention provides a waste liquid evaporation treatment device and an evaporation process for waste alkali liquid treatment, which has the following beneficial effects: 1. The present invention rotates the rotating end of the valve component so that the external waste alkali liquid and the defoaming agent inside the reagent component can flow into the interior of the feed component at the same time and mix, and then the mixed solution directly flows into the interior of the evaporation component to start evaporation. With the assistance of the defoaming agent, the waste alkali liquid will not generate foam when evaporating, so that the medium inside the heating component can better perform heat exchange on the continuously circulating waste alkali liquid, and at the same time, the actual evaporation amount of the evaporation crystallizer will not be reduced when evaporating the waste alkali liquid, thereby reducing the energy consumption and operating costs of the equipment when it is working.

[0017] 2. The present invention rotates the control disk so that the two rotating shafts drive the corresponding sealing plates to rotate with the assistance of the sprocket and the chain, so that the two sealing plates no longer block the corresponding L-shaped feeding pipe and the dosing pipe. Since the diameters of the L-shaped feeding pipe and the dosing pipe are set according to the mixing ratio of the waste alkali liquid and the defoaming agent, when the sealing plate is rotated and the overall flow of the waste alkali liquid inside the L-shaped feeding pipe is adjusted, the flow of the defoaming agent flowing into the L-shaped feeding pipe will also change accordingly. This setting allows the waste alkali liquid and the defoaming agent inside the L-shaped feeding pipe to always be mixed in a certain ratio, so that the mixing effect between the two can be guaranteed while the defoaming agent will not be wasted.

[0018] 3. The present invention rotates the control disk so that the two rotating shafts drive the corresponding sealing plates to rotate with the assistance of the sprocket and the chain, so that the two sealing plates no longer block the corresponding L-shaped feeding pipe and the dosing pipe. Since the diameters of the L-shaped feeding pipe and the dosing pipe are set according to the mixing ratio of the waste alkali liquid and the defoaming agent, when the sealing plate is rotated and the overall flow of the waste alkali liquid inside the L-shaped feeding pipe is adjusted, the flow of the defoaming agent flowing into the L-shaped feeding pipe will also change accordingly. This setting allows the waste alkali liquid and the defoaming agent inside the L-shaped feeding pipe to always be mixed in a certain ratio, so that the mixing effect between the two can be guaranteed while the defoaming agent will not be wasted. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a schematic diagram of the external contour structure of the present invention; Figure 2 For the present invention Figure 1 Rear view structure diagram; Figure 3 It is a schematic diagram of the internal structure of the heating box of the present invention; Figure 4 It is a schematic cross-sectional structural diagram of the diverter box of the present invention; Figure 5 For the present invention Figure 4 A is an enlarged structural diagram; Figure 6 It is a schematic diagram of the structure of the evaporation component of the present invention; Figure 7 It is a schematic diagram of the evaporation tube structure of the present invention; Figure 8 It is a schematic diagram of the structure of the corrugated plate of the present invention; Fig. 9 It is a schematic diagram of the structure of the pharmaceutical component of the present invention; Fig.10 It is a schematic diagram of the cross-sectional structure of the L-shaped feeding pipe of the present invention; Fig.11 It is a schematic diagram of the stirring frame structure of the present invention.

[0020] In the figure: 1. Evaporation assembly; 101. Sedimentation cylinder; 102. Evaporation cylinder; 103. Converging cover; 104. Storage tank; 105. Connecting cylinder; 106. Corrugated plate; 107. Positioning hole; 108. Positioning rod; 2. Feeding assembly; 201. Connecting seat; 202. Feeding port; 203. L-shaped feeding pipe; 3. Drug assembly; 301. Support frame; 302. Drug cylinder; 303. Drug feeding pipe; 304. One-way valve; 305. Sealing cover; 306. Support plate; 307. Rotating roller; 308. Fan blade; 309. Stirring frame; 4 , valve assembly; 401, rotating shaft; 402, sealing plate; 403, sprocket; 404, chain; 405, control panel; 5, heating assembly; 501, heating box; 502, diversion box; 503, diversion hole; 504, heating pipe; 505, connecting pipe; 506, steam compressor; 507, steam pipe; 508, outflow pipe; 6, circulation assembly; 601, extraction pipe; 602, circulation pump; 603, transport pipe; 604, return pipe; 605, U-shaped pipe; 606, sealing groove; 607, sealing ring; 608, guide pipe. DETAILED DESCRIPTION

[0021] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0022] As introduced in the background technology, there are deficiencies in the prior art. In order to solve the above technical problems, the present application proposes a waste liquid evaporation treatment equipment and an evaporation process for waste alkali liquid treatment.

[0023] See also Figure 1-11 , a waste liquid evaporation treatment equipment, comprising an evaporation component 1, a feeding component 2 is arranged on one side of the evaporation component 1, a medicine component 3 is arranged on the outside of the feeding component 2, a valve component 4 is arranged inside the medicine component 3 and the feeding component 2, a heating component 5 is arranged on one side of the evaporation component 1, the heating component 5 is connected to the evaporation component 1, and a circulation component 6 is arranged between the heating component 5 and the evaporation component 1; The valve assembly 4 is used to control the flow rate of the feed assembly 2 and the reagent assembly 3. The feed assembly 2 is used to transport the waste alkali liquid to the inside of the evaporation assembly 1. The reagent assembly 3 is used to put the reagent into the waste alkali liquid flowing inside the feed assembly 2. The circulation assembly 6 allows the waste alkali liquid to flow between the evaporation assembly 1 and the heating assembly 5, and the heating assembly 5 heats the flowing waste alkali liquid.

[0024] By opening the valve component 4, the waste alkali liquid can flow into the interior of the feeding component 2, and the defoaming agent in the reagent component 3 also directly falls into the interior of the feeding component 2. At the same time, the defoaming agent is mixed with the waste alkali liquid in the interior of the feeding component 2. Under the guidance of the feeding component 2, the mixed waste alkali liquid directly flows into the interior of the evaporation component 1. The waste alkali liquid in the evaporation component 1 passes through the interior of the heating component 5 with the assistance of the circulation component 6 and flows into the interior of the evaporation component 1 again. The heating component 5 can squeeze the waste alkali liquid flowing therein, so that the steam generated when the waste alkali liquid flows into the interior of the evaporation component 1 can flow upward and directly flow out from the interior of the evaporation component 1.

[0025] By rotating the rotating end of the valve component 4, the external waste alkali liquid and the defoaming agent inside the pharmaceutical component 3 can flow into the feed component 2 at the same time. At this time, the waste alkali liquid and the defoaming agent can be mixed inside the feed component 2, and then the mixed solution flows directly to the inside of the evaporation component 1 to start evaporation. With the assistance of the defoaming agent, the waste alkali liquid will not produce foam during evaporation, so that the medium inside the heating component 5 can better perform heat exchange on the continuously circulating waste alkali liquid, and at the same time, the actual evaporation amount of the evaporation crystallizer will not be reduced when evaporating the waste alkali liquid, thereby reducing the energy consumption and operating costs of the equipment when it is working.

[0026] Furthermore, for the above-mentioned evaporation component 1, the evaporation component 1 includes a sedimentation cylinder 101, an evaporation cylinder 102 is fixedly installed on the top of the sedimentation cylinder 101, a convergence cover 103 is fixedly installed on the top of the evaporation cylinder 102, a storage groove 104 is provided on the inner wall of the convergence cover 103, a connecting cylinder 105 is movably connected inside the storage groove 104, a plurality of corrugated plates 106 are fixedly connected to the inner wall of the connecting cylinder 105, a positioning hole 107 is provided on the top of the evaporation cylinder 102, a positioning rod 108 is inserted into the inside of the positioning hole 107, and the positioning rod 108 is fixedly connected to the convergence cover 103.

[0027] The waste alkali liquid flows into the interior of the evaporation cylinder 102 through the feeding component 2, and the waste alkali inside the evaporation cylinder 102 also directly falls into the interior of the sedimentation cylinder 101. At this time, the waste alkali liquid in the sedimentation cylinder 101 passes through the interior of the heating component 5 under the guidance of the circulation component 6 and then flows into the interior of the evaporation cylinder 102. The steam generated by the waste alkali liquid heated by the heating component 5 can flow upward inside the evaporation cylinder 102. At this time, some droplets entrained by the steam come into contact with several corrugated plates 106. When the steam hits the corrugated plate 106, the speed and direction suddenly change. Due to inertial impact and physical adsorption, the gas and liquid are effectively separated, and the mist is adsorbed on the surface of the corrugated plate 106, while the steam flows forward by inertia. The mist flows downward under the action of gravity, and continues to gather and grow. When the weight of the droplets is greater than the lifting force of the rising airflow, they fall back into the sedimentation tube 101. As the waste alkali solution continues to circulate, the waste alkali solution is gradually concentrated and finally concentrated into a supersaturated solution, and then a crystal product is formed. At this time, the crystals can be precipitated to the bottom of the sedimentation tube 101. When the crystals reach a certain degree, the discharge pump set at the bottom of the sedimentation tube 101 sends the crystals and a certain amount of saturated solution into the thickener. The supersaturated liquid after thickening enters the salt discharge dehydrator for solid-liquid separation, and the separated solids are stacked for transportation. When cleaning the corrugated plate 106, the fixing bolts are turned, and then the convergence cover 103 is removed from the top of the evaporation tube 102, and then the connecting tube 105 is removed from the evaporation tube 102, so that it is more convenient to clean the corrugated plate 106. During installation, several positioning rods 108 are inserted into the positioning holes 107, and then the convergence cover 103 is moved to the top of the evaporation tube 102 and fixed by fixing bolts. At this time, the connection tube 105 is inside the storage groove 104. The positioning rods 108 and the positioning holes 107 in the above arrangement prevent the connection tube 105 from moving randomly during use. In specific implementation, a vacuum pump can be arranged outside the evaporation tube 102, and the inside of the evaporation tube 102 is placed in a negative pressure state by the vacuum pump, so that the boiling point of the heated waste alkali liquid is reduced in the negative pressure state and evaporates quickly, thereby improving the evaporation efficiency.

[0028] Furthermore, for the above-mentioned feed component 2, the feed component 2 includes a connecting seat 201, the connecting seat 201 is fixedly connected to the evaporating tube 102, a feed port 202 is opened on one side of the connecting seat 201, and an L-shaped feed pipe 203 is fixedly installed on one side of the connecting seat 201.

[0029] One end of the L-shaped feed pipe 203 is connected to the discharge end of the dissolved air flotation system, so that the waste alkali liquid can flow directly into the inside of the L-shaped feed pipe 203 after the floating oil is scraped off. At the same time, the waste alkali liquid can flow into the inside of the evaporation cylinder 102 through the feed port 202 under the guidance of the L-shaped feed pipe 203.

[0030] Furthermore, for the above-mentioned medicine component 3, the medicine component 3 includes a support frame 301, the support frame 301 is fixedly installed on the outer surface of the sedimentation cylinder 101, the interior of the support frame 301 is fixedly connected with a medicine barrel 302, the bottom of the medicine barrel 302 is fixedly connected with a drug administration tube 303, the inner wall of the L-shaped feeding pipe 203 is fixedly connected with a one-way valve 304 corresponding to the drug administration tube 303, the drug administration tube 303 and the one-way valve 304 are fixedly connected together, and the top of the medicine barrel 302 is threadedly connected with a sealing cover 305.

[0031] The defoamer in the medicine barrel 302 can flow to the inside of the L-shaped feed pipe 203 through the one-way valve 304 under the guidance of the dosing pipe 303, so that the defoamer can be mixed with the waste alkali liquid in the L-shaped feed pipe 203. The one-way valve 304 is set so that the waste alkali liquid in the L-shaped feed pipe 203 will not flow to the inside of the medicine barrel 302 through the dosing pipe 303. The setting of the sealing cover 305 threadedly connected with the medicine barrel 302 makes it more convenient to put the defoamer into the inside of the medicine barrel 302. The foam is formed by the presence of surfactants in the waste alkali liquid, which reduces the surface tension of the liquid, so that the gas generated by the waste alkali liquid when evaporating can form a stable film in the liquid. The defoamer molecules can quickly spread on the surface of the foam, replace the original surfactant, and change the local surface tension of the foam. When the surface tension of the foam is uneven, the foam will burst.

[0032] Furthermore, for the above-mentioned L-shaped feeding tube 203, the inner wall of the L-shaped feeding tube 203 is fixedly connected with a support plate 306, one side of the support plate 306 is rotatably connected with a rotating roller 307, the outer surface of the rotating roller 307 is fixedly connected with fan blades 308 and a stirring frame 309, and a plurality of fan blades 308 and stirring frames 309 are arranged in a circular array.

[0033] The waste alkali liquid continuously flowing inside the L-shaped feed pipe 203 can impact the fan blade 308, so that the fan blade 308 can drive the rotating roller 307 to rotate, and the rotating rotating roller 307 can drive the stirring frame 309 to stir the waste alkali liquid and the defoaming agent inside the L-shaped feed pipe 203, so that the waste alkali liquid and the defoaming agent can be fully mixed together. This setting ensures the defoaming effect of the defoaming agent.

[0034] Furthermore, for the above-mentioned valve assembly 4, the valve assembly 4 includes a rotating shaft 401, and the rotating shaft 401 is arranged inside the L-shaped feeding pipe 203 and the dosing pipe 303. The two rotating shafts 401 are rotatably connected to the support frame 301. The outer surface of the rotating shaft 401 is fixedly connected to a sealing plate 402, and the outer surface of the rotating shaft 401 is fixedly connected to a sprocket 403. The outer surface of the sprocket 403 is meshed with a chain 404, and one end of the rotating shaft 401 is fixedly connected to a control disk 405.

[0035] By rotating one of the rotating shafts 401 through the control disk 405, the rotating rotating shaft 401 drives the other rotating shaft 401 to rotate together through the sprocket 403 and the chain 404, so that the two rotating shafts 401 can drive the corresponding sealing plates 402 to rotate, and the two sealing plates 402 no longer block their corresponding L-shaped feeding pipes 203 and dosing pipes 303. Since the diameters of the L-shaped feeding pipes 203 and the dosing pipes 303 are set according to the mixing ratio of the waste alkali liquid and the defoaming agent, when the sealing plate 402 is rotated and the overall flow rate of the waste alkali liquid inside the L-shaped feeding pipe 203 is adjusted, the flow rate of the defoaming agent flowing into the L-shaped feeding pipe 203 will also change accordingly. This setting allows the waste alkali liquid and the defoaming agent inside the L-shaped feeding pipe 203 to be mixed in a certain ratio, so that the mixing effect between the two can be guaranteed while the defoaming agent will not be wasted.

[0036] Furthermore, for the above-mentioned heating component 5, the heating component 5 includes a heating box 501, and a diverter box 502 is fixedly installed on the inner wall of the heating box 501. Two diverter boxes 502 are provided, and a plurality of diverter holes 503 are opened on opposite sides of the two diverter boxes 502. A heating tube 504 is fixedly installed between the two diverter boxes 502 corresponding to the diverter holes 503. A connecting tube 505 is fixedly connected to the top of the upper diverter box 502, and one end of the connecting tube 505 is fixedly connected to a steam compressor 506. A steam pipe 507 is fixedly connected to the air inlet end of the steam compressor 506. The steam pipe 507 is fixedly connected to the top of the convergence cover 103, and an outflow pipe 508 is fixedly connected to the bottom of the lower diverter box 502.

[0037] The steam in the evaporating cylinder 102 can flow into the steam compressor 506 through the steam pipe 507 provided on the converging cover 103. At this time, the temperature of the steam can be rapidly increased under the compression of the steam compressor 506. At the same time, the steam in the steam compressor 506 can flow into the upper diverter box 502 under the guidance of the connecting pipe 505. The steam in the diverter box 502 flows into the corresponding heating pipe 504 through a plurality of diverter holes 503. The steam in the heating pipe 504 can perform heat exchange with the flowing waste alkali liquid. The steam that completes the heat exchange is converted into condensed water. At this time, the condensed water is cooled by its own gravity. Under the action of the diversion hole 503 on the lower side, the condensed water flows to the inside of the corresponding diversion box 502, and the condensed water in the diversion box 502 flows out from the inside of the heating box 501 under the guidance of the outflow pipe 508, and a steam generator is installed at one end of the outflow pipe 508. At this time, the condensed water flows directly to the inside of the steam generator under the guidance of the outflow pipe 508, and the condensed water forms steam again under the action of the steam generator. At this time, the steam can flow to the inside of the steam tank on the steam compressor 506 under the transportation of the pipeline, and then the circulating waste alkali liquid is heat exchanged again through the connecting pipe 505, so that the condensed water can be recycled.

[0038] Further, for the above-mentioned circulation component 6, the circulation component 6 includes an extraction pipe 601, one end of the extraction pipe 601 is fixedly connected to the sedimentation cylinder 101, and the other end of the extraction pipe 601 is fixedly installed with a circulation pump 602, and the output end of the circulation pump 602 is fixedly connected with a transport pipe 603, and the port of the transport pipe 603 is located at the lower side diversion hole 503, and the outer side of the evaporation cylinder 102 is fixedly connected with a return pipe 604, and one end of the return pipe 604 is located at the upper side diversion hole 503. Internally, the two diversion boxes 502 are fixedly connected to the corresponding diversion holes 503 with a plurality of U-shaped tubes 605, and the U-shaped tubes 605 are located inside the corresponding diversion holes 503. The ports of the transport tube 603, the return tube 604 and the U-shaped tube 605 are all provided with sealing grooves 606, and a sealing ring 607 is inserted into the sealing groove 606. One side of the sealing ring 607 is fixedly connected with a guide tube 608, and a plurality of guide tubes 608 are arranged between the two diversion boxes 502 corresponding to the diversion holes 503.

[0039] The circulation pump 602 extracts the waste alkali liquid inside the sedimentation cylinder 101 through the extraction pipe 601, and the extracted waste alkali liquid flows to the inside of the first guide pipe 608 through the transport pipe 603. At the same time, under the guidance of several U-shaped tubes 605, the waste alkali liquid can flow back and forth in multiple guide pipes 608. At the same time, since the guide pipe 608 is arranged inside the heating pipe 504, the steam flowing inside the heating pipe 504 can exchange heat with the waste alkali liquid. After the waste alkali liquid finishes flowing inside the last guide pipe 608, it can flow to the inside of the evaporation cylinder 102 through the reflux pipe 604. At this time, the steam generated by the heating of the waste alkali liquid begins to flow upward. Since the waste alkali liquid can flow back and forth inside the heating box 501, the effect of steam in heating the waste alkali liquid is improved. When cleaning the guide tube 608, the two diverter boxes 502 are removed from the inside of the heating box 501, and then the plurality of heating tubes 504 are removed from between the two diverter boxes 502. At this time, the two diverter boxes 502 can be separated, and the guide tube 608 can be directly removed from between the two diverter boxes 502. This arrangement makes it more convenient to clean the guide tube 608. When the guide tube 608 is inside the two diverter boxes 502, the sealing rings 607 at both ends of the guide tube 608 can be inside the sealing groove 606. This arrangement ensures the sealing of the connection between the guide tube 608 and the transport tube 603, the return tube 604 and the U-shaped tube 605.

[0040] Through the above technical scheme, 1. By rotating the rotating end of the valve component 4, the external waste alkali liquid and the defoaming agent inside the pharmaceutical component 3 can flow into the feeding component 2 at the same time and mix, and then the mixed solution directly flows into the evaporation component 1 to start evaporation. With the assistance of the defoaming agent, the waste alkali liquid will not produce foam when evaporating, so that the medium inside the heating component 5 can better exchange heat with the continuously circulating waste alkali liquid, and at the same time, the actual evaporation amount of the evaporation crystallizer when evaporating the waste alkali liquid will not be reduced, so that the energy consumption and operating cost of the equipment are reduced when working; 2. By rotating the control disk 405, the two rotating shafts 401 drive the corresponding sealing plates 402 to rotate with the assistance of the sprocket 403 and the chain, so that the two sealing plates 402 no longer block their corresponding L-shaped feeding pipes 203 and dosing pipes 303, because the diameters of the L-shaped feeding pipes 203 and the dosing pipes 303 are set according to the mixing ratio of the waste alkali liquid and the defoaming agent. The arrangement is such that when the sealing plate 402 is rotated and the overall flow rate of the waste alkali liquid in the L-shaped feeding pipe 203 is adjusted, the flow rate of the defoaming agent flowing into the L-shaped feeding pipe 203 will also change accordingly. This arrangement allows the waste alkali liquid and the defoaming agent in the L-shaped feeding pipe 203 to be mixed at a certain ratio at all times, so that the mixing effect between the two can be ensured while the defoaming agent will not be wasted; 3. By continuously flowing the waste alkali liquid in the L-shaped feeding pipe 203 The alkali liquid impacts the fan blades 308, so that the fan blades 308 drive the stirring frame 309 to stir the waste alkali liquid and defoaming agent inside the L-shaped feed pipe 203 through the rotating roller 307. In addition, the waste alkali liquid and the defoaming agent are mixed in small quantities and continuously inside the L-shaped feed pipe 203, and the L-shaped feed pipe 203 is arranged relatively long, so that the waste alkali liquid and the defoaming agent can be fully mixed together inside the L-shaped feed pipe 203. This arrangement ensures the defoaming effect of the defoaming agent when the waste alkali liquid is evaporated.

[0041] An evaporation process for treating waste alkali liquid comprises the waste liquid evaporation treatment equipment, which is used to separate the neutralized waste alkali liquid by evaporation crystallization and salt removal through a combination scheme of "dissolved air flotation system + single-effect evaporation crystallizer + centrifuge" to achieve the purpose of zero discharge of waste liquid; specifically, the neutralized waste alkali liquid enters the dissolved air flotation system, and the floating oil is scraped and sent out through flocculation and gas separation; then it enters the "circulating heat exchanger + circulating pump + gas-liquid separator" evaporation system, the waste alkali liquid is gradually concentrated in the evaporation system, and finally concentrated into a supersaturated solution, and then a crystallized product is formed; after the number and particles of the crystals reach a set threshold, they are sent into a thickener by a discharge pump, and the supersaturated liquid after thickening enters a salt removal dehydrator for solid-liquid separation, and the separated solids are stacked for external transportation.

[0042] An evaporation process for waste alkali liquid treatment: The specific method of using the waste liquid evaporation treatment equipment to evaporate and crystallize the neutralized waste alkali liquid is as follows: the control disk 405 is used to rotate the corresponding rotating shaft 401, and the two rotating shafts 401 drive the corresponding sealing plates 402 to rotate under the drive of the sprocket 403 and the chain 404. At this time, the waste alkali liquid with the floating oil scraped off flows into the inside of the L-shaped feeding pipe 203, and the defoaming agent in the medicine barrel 302 flows into the inside of the L-shaped feeding pipe 203 through the dosing pipe 303; The waste alkali liquid flowing in the L-shaped feeding pipe 203 drives the fan blades 308 to rotate, and the fan blades 308 drive a plurality of stirring racks 309 to rotate through the rotating rollers 307, so that the stirring racks 309 stir the waste alkali liquid and the defoaming agent in the L-shaped feeding pipe 203; The stirred waste alkali liquid flows into the interior of the evaporation cylinder 102 through the feed port 202, and the waste alkali liquid in the evaporation cylinder 102 flows directly into the interior of the sedimentation cylinder 101. The circulating pump 602 extracts the waste alkali liquid in the sedimentation cylinder 101 through the extraction pipe 601. The extracted waste alkali liquid passes through the interior of the heating box 501 under the guidance of the transport pipe 603, the plurality of guide pipes 608, the plurality of U-shaped pipes 605 and the reflux pipe 604, and flows into the interior of the evaporation cylinder 102 again. At the same time, the steam compressor 506 transports steam to the upper side diverter box 502 through the connecting pipe 505, and the steam in the diverter box 502 exchanges heat with the waste alkali liquid in the diverter pipes 608 through the diverter holes 503 and the heating pipe 504, and the condensed water converted from steam flows out through the outflow pipe 508; After the heated waste alkali liquid flows into the interior of the evaporation cylinder 102, the generated steam flows upward and flows into the interior of the steam compressor 506 through the steam pipe 507, and the waste alkali liquid repeats the above flow again.

[0043] While the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that many changes, modifications, substitutions and variations can be made to the embodiments without departing from the principles and spirit of the invention.

Claims

1. A waste liquid evaporation treatment device, comprising an evaporation component (1), characterized in that: A feed assembly (2) is provided on one side of the evaporation assembly (1), a medicine assembly (3) is provided on the outside of the feed assembly (2), a valve assembly (4) is provided inside the medicine assembly (3) and the feed assembly (2), a heating assembly (5) is provided on one side of the evaporation assembly (1), the heating assembly (5) and the evaporation assembly (1) are connected together, and a circulation assembly (6) is provided between the heating assembly (5) and the evaporation assembly (1); The valve component (4) is used to control the flow rate of the feed component (2) and the reagent component (3); the feed component (2) is used to transport the waste alkali liquid to the inside of the evaporation component (1); the reagent component (3) is used to put the reagent into the waste alkali liquid flowing inside the feed component (2); the circulation component (6) allows the waste alkali liquid to flow between the evaporation component (1) and the heating component (5); and the heating component (5) heats the flowing waste alkali liquid.

2. A waste liquid evaporation treatment equipment according to claim 1, characterized in that: The evaporation assembly (1) comprises a sedimentation cylinder (101), an evaporation cylinder (102) is fixedly mounted on the top of the sedimentation cylinder (101), a convergence cover (103) is fixedly mounted on the top of the evaporation cylinder (102), a storage groove (104) is provided on the inner wall of the convergence cover (103), a connecting cylinder (105) is movably connected inside the storage groove (104), a plurality of corrugated plates (106) are fixedly connected to the inner wall of the connecting cylinder (105), a positioning hole (107) is provided on the top of the evaporation cylinder (102), a positioning rod (108) is inserted into the inside of the positioning hole (107), and the positioning rod (108) is fixedly connected to the convergence cover (103).

3. A waste liquid evaporation treatment equipment according to claim 2, characterized in that: The feed assembly (2) comprises a connection seat (201), the connection seat (201) being fixedly connected to the evaporation cylinder (102), a feed port (202) being provided on one side of the connection seat (201), and an L-shaped feed pipe (203) being fixedly mounted on one side of the connection seat (201).

4. The waste liquid evaporation treatment equipment according to claim 3, characterized in that: The medicine assembly (3) comprises a support frame (301), wherein the support frame (301) is fixedly mounted on the outer surface of the sedimentation cylinder (101), a medicine cylinder (302) is fixedly connected to the interior of the support frame (301), a medicine dosing tube (303) is fixedly connected to the bottom of the medicine cylinder (302), a one-way valve (304) is fixedly connected to the inner wall of the L-shaped feeding tube (203) corresponding to the medicine dosing tube (303), the medicine dosing tube (303) and the one-way valve (304) are fixedly connected together, and a sealing cap (305) is threadedly connected to the top of the medicine cylinder (302).

5. The waste liquid evaporation treatment equipment according to claim 4, characterized in that: The inner wall of the L-shaped feeding pipe (203) is fixedly connected to a support plate (306), one side of the support plate (306) is rotatably connected to a rotating roller (307), the outer surface of the rotating roller (307) is fixedly connected to a fan blade (308) and a stirring frame (309), and a plurality of the fan blades (308) and the stirring frame (309) are arranged in a circular array.

6. The waste liquid evaporation treatment equipment according to claim 5, characterized in that: The valve assembly (4) comprises a rotating shaft (401), wherein the rotating shaft (401) is arranged inside the L-shaped feeding pipe (203) and the dosing pipe (303), and the two rotating shafts (401) are rotatably connected to the support frame (301), and the outer surface of the rotating shaft (401) is fixedly connected to a sealing plate (402), and the outer surface of the rotating shaft (401) is fixedly connected to a sprocket (403), and the outer surface of the sprocket (403) is meshed with a chain (404), and one end of the rotating shaft (401) is fixedly connected to a control disk (405).

7. The waste liquid evaporation treatment equipment according to claim 6, characterized in that: The heating assembly (5) comprises a heating box (501), a flow diversion box (502) being fixedly mounted on the inner wall of the heating box (501), two flow diversion boxes (502) being provided, a plurality of flow diversion holes (503) being opened on opposite sides of the two flow diversion boxes (502), a heating tube (504) being fixedly mounted between the two flow diversion boxes (502) corresponding to the flow diversion holes (503), a connecting tube (505) being fixedly connected to the top of the upper flow diversion box (502), one end of the connecting tube (505) being fixedly connected to a steam compressor (506), an air inlet end of the steam compressor (506) being fixedly connected to a steam tube (507), the steam tube (507) being fixedly connected to the top of a converging cover (103), and an outflow tube (508) being fixedly connected to the bottom of the lower flow diversion box (502).

8. The waste liquid evaporation treatment equipment according to claim 7, characterized in that: The circulation assembly (6) comprises an extraction pipe (601), one end of the extraction pipe (601) is fixedly connected to the sedimentation cylinder (101), a circulation pump (602) is fixedly installed on the other end of the extraction pipe (601), the output end of the circulation pump (602) is fixedly connected to a transport pipe (603), the port of the transport pipe (603) is located at the lower side flow diversion hole (503), the outer side of the evaporation cylinder (102) is fixedly connected to a return pipe (604), one end of the return pipe (604) is located inside the upper side flow diversion hole (503), and the two diversion boxes ( A plurality of U-shaped tubes (605) are fixedly connected to the corresponding flow diversion holes (503) inside the two diversion boxes (502); the U-shaped tubes (605) are located inside the corresponding flow diversion holes (503); the ports of the transport tube (603), the return tube (604) and the U-shaped tube (605) are all provided with sealing grooves (606); a sealing ring (607) is inserted into the inside of the sealing groove (606); a flow guide tube (608) is fixedly connected to one side of the sealing ring (607); and a plurality of flow guide tubes (608) are provided between the two diversion boxes (502) corresponding to the flow diversion holes (503).

9. An evaporation process for treating waste alkali liquid, comprising the waste liquid evaporation treatment equipment according to claim 8, characterized in that: The "dissolved air flotation system + single-effect evaporation crystallizer + centrifuge" combination scheme is used to separate the neutralized waste alkali liquid by evaporation and crystallization + salt removal, so as to achieve the purpose of zero discharge of waste liquid; specifically, the neutralized waste alkali liquid enters the dissolved air flotation system, and the floating oil is scraped and sent out through flocculation and gas separation; then it enters the "circulating heat exchanger + circulating pump + gas-liquid separator" evaporation system, and the waste alkali liquid is gradually concentrated in the evaporation system, and finally concentrated into a supersaturated solution, and then a crystallized product is formed; when the number and particles of the crystals reach the set threshold, they are sent to the thickener by the discharge pump, and the supersaturated liquid after thickening enters the salt removal dehydrator for solid-liquid separation, and the separated solids are stacked for external transportation.

10. The evaporation process for treating waste alkali solution according to claim 9, characterized in that: The specific method for using the waste liquid evaporation treatment equipment to evaporate and crystallize the neutralized waste alkali liquid is as follows: the control disk (405) is used to rotate the corresponding rotating shaft (401), and the two rotating shafts (401) drive the corresponding sealing plates (402) to rotate under the drive of the sprocket (403) and the chain (404), at which time, the waste alkali liquid with the floating oil scraped off flows into the interior of the L-shaped feeding pipe (203), and the defoaming agent in the medicine barrel (302) flows into the interior of the L-shaped feeding pipe (203) through the medicine feeding pipe (303); The waste alkali liquid flowing inside the L-shaped feeding pipe (203) drives the fan blades (308) to rotate, and the fan blades (308) drive a plurality of stirring racks (309) to rotate via rotating rollers (307), so that the stirring racks (309) stir the waste alkali liquid and defoaming agent inside the L-shaped feeding pipe (203); The waste alkali liquid that has been stirred flows into the interior of the evaporation cylinder (102) through the feed port (202), and at the same time, the waste alkali liquid in the evaporation cylinder (102) directly flows into the interior of the sedimentation cylinder (101). The circulation pump (602) extracts the waste alkali liquid in the sedimentation cylinder (101) through the extraction pipe (601). The extracted waste alkali liquid passes through the interior of the heating box (501) under the guidance of the transport pipe (603), the plurality of guide pipes (608), the plurality of U-shaped pipes (605) and the reflux pipe (604), and flows into the interior of the evaporation cylinder (102) again. At the same time, the steam compressor (506) transports steam to the interior of the upper diversion box (502) through the connecting pipe (505), and the steam inside the diversion box (502) exchanges heat with the waste alkali liquid inside the plurality of guide pipes (608) through the plurality of diversion holes (503) and the heating pipe (504), and the condensed water converted from the steam flows out through the outflow pipe (508); After the heated waste alkali liquid flows into the interior of the evaporation cylinder (102), the generated steam flows upward and flows into the interior of the steam compressor (506) through the steam pipe (507), and the waste alkali liquid repeats the above flow again.

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