Evaporative crystallization equipment for hazardous waste chemical sewage

Abstract

The utility model discloses hazardous waste chemical sewage evaporative crystallization equipment which comprises an equipment main shell, and an evaporative crystallization barrel shell which vertically extends is arranged in the equipment main shell; the upper end and the lower end of the evaporative crystallization barrel shell are each fixedly provided with a suspension supporting column coaxial with the evaporative crystallization barrel shell, and the two suspension supporting columns are fixedly connected with the inner top and the inner bottom of the equipment main shell correspondingly. The suspended supporting column is rotationally connected with an evaporation spraying supporting ring, the evaporation spraying supporting ring is connected with a spraying conveying pipe, and a plurality of evaporation spraying nozzles are fixed to the side face of the spraying conveying pipe. According to the equipment, an additive-free evaporation treatment process is adopted, so that the use of chemical agents is reduced, and the potential risk on the environment and the water quality caused by chemical agent residues is reduced; the device can adapt to hazardous waste chemical wastewater with different components and different concentrations, and various types of wastewater including wastewater with complex water quality such as high salinity, high hardness and high organic matter content can be effectively treated by adjusting operation parameters and process configuration such as evaporation temperature, pressure and retention time.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of sewage treatment, specifically to a kind of dangerous waste chemical industrial wastewater evaporation crystallization equipment. BACKGROUND

[0002] Dangerous waste chemical industrial wastewater evaporation crystallization equipment is a professional equipment for treating hazardous waste chemical industrial wastewater. Its main function is to remove water from wastewater by evaporation and crystallization, causing solutes to precipitate in the form of crystals, thereby achieving the purpose of reducing wastewater volume, recovering solutes and reducing pollutant emissions. It can convert a large amount of dangerous waste chemical industrial wastewater into solid crystals and a small amount of mother liquor, greatly reducing the volume of wastewater that needs to be disposed of, reducing the cost of hazardous waste disposal and transportation, and recycling valuable solutes such as salts through crystallization, achieving resource reuse.

[0003] The evaporation crystallization equipment of the prior art has poor wastewater treatment adaptability and low purity of the obtained crystalline substance, and needs to be further improved and optimized. UTILITY MODEL CONTENT

[0004] The utility model aims to provide a kind of dangerous waste chemical industrial wastewater evaporation crystallization equipment, which can effectively recover salt substances in dangerous waste chemical industrial wastewater.

[0005] To achieve the above purpose, the utility model provides the following technical scheme:

[0006] A kind of dangerous waste chemical industrial wastewater evaporation crystallization equipment, comprising a device main shell, a vertically extending evaporation crystallization cylinder shell is provided in the device main shell;

[0007] Each of the upper and lower ends of the evaporation crystallization cylinder shell is fixed with a coaxial suspended support column, and the two suspended support columns are fixedly connected at the top and bottom of the device main shell, respectively;

[0008] A evaporation spray support ring is rotatably connected to the suspended support column, and the evaporation spray support ring is fixedly connected with a vertically extending spray delivery pipe through an outwardly extending support rod, and a plurality of evaporation spray nozzles are fixed to the side of the spray delivery pipe close to the evaporation crystallization cylinder shell;

[0009] Two crystal scraper support rings are rotatably connected to the two suspended support columns, and the two crystal scraper support rings are fixedly connected with a vertically extending crystal scraper support column through an outwardly extending support plate, and a crystal recovery scraper is fixed to the side of the crystal scraper support column close to the evaporation crystallization cylinder shell, and the edge of the crystal recovery scraper is in contact with the outer wall of the evaporation crystallization cylinder shell.

[0010] Preferably, a heating support column is fixed in the evaporation crystallization cylinder shell, a plurality of optical fiber collection pipes extending radially in the evaporation crystallization cylinder shell are fixed on the heating support column, an optical fiber support plate is fixed in the optical fiber collection pipe, and a plurality of optical fiber fixed mounting pipes extending parallel to the axis direction of the optical fiber collection pipe are fixed on the optical fiber support plate.

[0011] The optical fiber collection pipe is fixed with a focusing lens group at one end close to the inner side wall of the evaporation crystallization cylinder shell.

[0012] Description: The sunlight is concentrated by the sunlight concentrator of the prior art, the other end of the light guide optical fiber is fixed at the focal point of the sunlight concentrator, the concentrated sunlight is transmitted to the optical fiber collection pipe through the light guide optical fiber, and the concentrated sunlight is irradiated on the inner side wall of the evaporation crystallization cylinder shell through the focusing effect of the focusing lens group, so that the evaporation crystallization cylinder shell is heated.

[0013] Preferably, a crystallization recovery containing shell is fixed at the bottom of the equipment main shell, and a crystallization recovery through hole is formed in the inner bottom of the equipment main shell and communicates with the crystallization recovery containing shell.

[0014] A recovery pushing rotation ring is rotatably connected to the suspended support column fixed to the inner bottom of the equipment main shell, a recovery pushing scraper is fixed on the recovery pushing rotation ring, and the recovery pushing scraper is in contact with the inner bottom of the equipment main shell.

[0015] Description: The salt substance crystals will fall and collect on the inner bottom of the equipment main shell, the recovery pushing rotation ring continuously rotates to drive the recovery pushing scraper to move, and under the pushing action of the recovery pushing scraper, the salt substance crystals fall into the crystallization recovery containing shell at the crystallization recovery through hole to be stored.

[0016] Preferably, a condensation preheating mechanism is arranged in connection with the equipment main shell, and the condensation preheating mechanism comprises a condensation preheating containing box, and a zigzag-shaped condensation flow pipe is fixed in the condensation preheating containing box.

[0017] A steam discharge pipe is fixed at the top of the equipment main shell and communicates with the inside of the equipment main shell, and the steam discharge pipe communicates with the upper end of the condensation flow pipe.

[0018] A condensate recovery tank is arranged in communication with the lower end of the condensation flow pipe.

[0019] A preheating input pipe and a preheating output pipe are fixed outside the condensation preheating containing box and communicate with the inside of the condensation preheating containing box, the preheating output pipe is connected with a delivery pump, and the output end of the delivery pump communicates with the spray delivery pipe through a pipeline.

[0020] Description: The input hazardous waste chemical sewage is preheated by steam preheating for heat exchange, so as to improve the temperature of the sewage and accelerate the evaporation process of the hazardous waste chemical sewage.

[0021] Compared with the prior art, the beneficial effects of the utility model are embodied in the following aspects:

[0022] 1. The utility model discloses a reasonable structure, adopts the evaporation treatment process of no addition, reduces the use of chemical agent, reduces the potential risk of the environment and water quality caused by chemical agent residue, realizes clean production;

[0023] 2. The utility model discloses a variety of sewage can be handled: can adapt to different components, different concentration of hazardous waste chemical sewage, by adjusting operating parameters and process configuration, such as evaporation temperature, pressure, residence time, realizes the effective treatment of various types of sewage, including high salinity, high hardness, high organic matter content and other complex water quality sewage;

[0024] 3. The utility model discloses a crystal uniform distribution on the outer surface of the evaporation crystallization cylinder shell, so that the solute can be fully crystallized, and the crystal with uniform particle size and high purity is obtained, which is convenient for subsequent separation and recycling and improves the recycling value of resources;

[0025] 4. The utility model discloses a energy recovery mechanism, the waste heat generated by evaporation is recycled by heat exchange, reduces the demand for external energy, and can greatly reduce the steam usage and energy consumption. BRIEF DESCRIPTION OF DRAWINGS

[0026] Figure 1 It is the front view of the utility model;

[0027] Figure 2 It is the structure diagram of the optical fiber collection pipe of the utility model.

[0028] In the drawing, 10 is the equipment main shell, 101 is the steam exhaust pipe, 11 is the evaporation crystallization cylinder shell, 12 is the suspended support column, 13 is the evaporation spraying support ring, 131 is the overhanging support rod, 14 is the spraying conveying pipe, 140 is the evaporation spraying nozzle, 15 is the crystallization scraper support ring, 151 is the overhanging support plate, 152 is the crystallization scraper support column, 16 is the crystallization recovery scraper, 17 is the crystallization recovery containing shell, 171 is the crystallization recovery through hole, 18 is the recovery push rotation ring, 181 is the recovery push scraper, 19 is the heating support column, 190 is the light guide optical fiber, 191 is the optical fiber collection pipe, 192 is the optical fiber support plate, 193 is the optical fiber fixed installation pipe, 194 is the focusing lens group, 20 is the condensation preheating mechanism, 21 is the condensation preheating containing box, 211 is the preheating input pipe, 212 is the preheating output pipe, 22 is the condensation flow pipe, 220 is the condensation water recovery box, and 23 is the conveying pump. DETAILED DESCRIPTION

[0029] The following will be combined Figures 1-2This utility model will be described in detail. For ease of description, the orientations mentioned below are defined as follows: The directions of up, down, left, right, front, and back mentioned below are consistent with the directions of up, down, left, right, front, and back in the projection relationship of their respective main views or structural schematic diagrams.

[0030] Example 1:

[0031] An evaporation and crystallization device for hazardous chemical wastewater, such as Figure 1 As shown, the device includes a main housing 10, and a vertically extending evaporation crystallization cylinder shell 11 is provided inside the main housing 10.

[0032] The evaporation crystallization cylinder shell 11 is fixed with a suspended support column 12 coaxial with it at both the upper and lower ends. The two suspended support columns 12 are fixedly connected to the top and bottom of the main shell 10 of the equipment, respectively.

[0033] An evaporation spray support ring 13 is rotatably connected to the suspended support column 12. The evaporation spray support ring 13 is fixedly connected to a vertically extending spray delivery pipe 14 via an extended support rod 131. Multiple evaporation spray nozzles 140 are fixed on the side of the spray delivery pipe 14 near the evaporation crystallization cylinder shell 11.

[0034] Two suspended support columns 12 are rotatably connected to crystallization scraper support rings 15. The two crystallization scraper support rings 15 are fixedly connected to a vertically extending crystallization scraper support column 152 through an extended support plate 151. A crystallization recovery scraper 16 is fixed on the side of the crystallization scraper support column 152 near the evaporation crystallization cylinder shell 11. The blade side of the crystallization recovery scraper 16 contacts and engages with the outer wall of the evaporation crystallization cylinder shell 11.

[0035] like Figure 1 As shown, a heating support column 19 is fixed inside the evaporation crystallization cylinder shell 11, such as... Figure 2 As shown, multiple fiber optic collection tubes 191 extending radially along the evaporation crystallization cylinder shell 11 are fixed on the heating support column 19. Fiber optic support plates 192 are fixed inside the fiber optic collection tubes 191. Multiple fiber optic fixing and mounting tubes 193 extending parallel to the axial direction of the fiber optic collection tubes 191 are fixed on the fiber optic support plate 192. Multiple optical fiber guides 190 are fixed in each optical fiber fixing and mounting tube 193.

[0036] A focusing lens group 194 is fixed at one end of the fiber optic collecting tube 191 near the inner wall of the evaporation crystallization cylinder shell 11.

[0037] The sunlight is focused using a solar concentrator with existing technology. The other end of the optical fiber 190 is fixed at the focal point of the solar concentrator. The focused sunlight is transmitted to the optical fiber collection tube 191 by the optical fiber 190. Then, through the focusing effect of the focusing lens group 194, the focused sunlight is irradiated on the inner wall of the evaporation crystallization cylinder shell 11 to heat the evaporation crystallization cylinder shell 11.

[0038] Embodiment 2:

[0039] On the basis of embodiment 1, the crystallization recovery containing shell 17 is fixed at the bottom of the equipment main shell 10, and the crystallization recovery through hole 171 is arranged in the inner bottom of the equipment main shell 10 and communicated with the crystallization recovery containing shell 17;

[0040] The recovery push rotation ring 18 is rotationally connected to the suspended support column 12 fixed to the inner bottom of the equipment main shell 10, and the recovery push scraper 181 is fixed to the recovery push rotation ring 18 and in contact with the inner bottom of the equipment main shell 10.

[0041] Embodiment 3:

[0042] On the basis of embodiment 2, the condensation preheating mechanism 20 is arranged in connection with the equipment main shell 10, and the condensation preheating containing box 21 is arranged in the condensation preheating mechanism 20, and the zigzag extending condensation flow pipe 22 is fixed in the condensation preheating containing box 21;

[0043] The steam exhaust pipe 101 is fixed at the top of the equipment main shell 10 and communicated with the inside of the equipment main shell 10, and the steam exhaust pipe 101 is communicated with the upper end of the condensation flow pipe 22;

[0044] The condensation water recovery box 220 is arranged in communication with the lower end of the condensation flow pipe 22;

[0045] The preheating input pipe 211 and the preheating output pipe 212 are fixed outside the condensation preheating containing box 21 and communicated with the inside of the condensation preheating containing box 21, the preheating output pipe 212 is connected with the delivery pump 23, the preheating output pipe 212 is communicated with the input end of the delivery pump 23, and the output end of the delivery pump 23 is communicated with the spray delivery pipe 14 through a pipeline.

[0046] It should be noted that the evaporation spray nozzle 140, the light guide fiber 190, the focusing lens group 194 and the delivery pump 23 used in the present application are all existing technologies, and no special limitation is made here, and those skilled in the art can select them according to the needs, as long as the technical solutions of the present application can be realized.

[0047] In the actual application process of the utility model, the evaporation spray support ring 13 is driven to rotate around the axis of the suspended support column 12 by the existing technology of the servo motor fixed on the suspended support column 12 through gear transmission;

[0048] The evaporation spray support ring 13 drives the spray delivery pipe 14 to rotate through the outer extension support rod 131, and the rotation law of the evaporation spray support ring 13 is periodic clockwise 360° rotation and counterclockwise 360° rotation, which avoids the entanglement of the pipeline connected with the spray delivery pipe 14;

[0049] The hazardous chemical waste water to be treated is first delivered from the preheating input pipe 211 to the condensation preheating containing box 21 by using the delivery pump of the prior art, and the hazardous chemical waste water is discharged from the preheating output pipe 212 after flowing through the condensation preheating containing box 21;

[0050] The hazardous chemical waste water discharged from the preheating output pipe 212 is delivered to the spraying delivery pipe 14 by using the delivery pump 23, and the hazardous chemical waste water is sprayed from each evaporation spraying nozzle 140 to be uniformly sprayed on the outer lateral wall of the evaporation crystallization cylinder shell 11;

[0051] The sunlight is converged by using the sunlight concentrator of the prior art, the other end of the light guide fiber 190 is fixed at the focal point of the sunlight concentrator, the converged sunlight is transmitted to the optical fiber collection pipe 191 by using the light guide fiber 190, and the converged sunlight is irradiated on the inner lateral wall of the evaporation crystallization cylinder shell 11 by the focusing action of the focusing lens group 194 to heat the evaporation crystallization cylinder shell 11 and further heat and evaporate the hazardous chemical waste water sprayed on the outer lateral wall of the evaporation crystallization cylinder shell 11;

[0052] The water vapor generated by evaporation is discharged from the vapor discharge pipe 101 and delivered to the condensation flowing pipe 22, and the water vapor is changed into condensed water by heat exchange with the hazardous chemical waste water in the condensation preheating containing box 21 in the flowing process in the condensation flowing pipe 22, and the condensed water is finally collected in the condensed water recovery box 220;

[0053] In the heat exchange process, the hazardous chemical waste water in the condensation preheating containing box 21 is heated to play a preheating role, which is beneficial to accelerate the evaporation process of the hazardous chemical waste water on the outer lateral wall of the evaporation crystallization cylinder shell 11;

[0054] After the hazardous chemical waste water is evaporated, the salt substances in the hazardous chemical waste water are crystallized on the outer lateral wall of the evaporation crystallization cylinder shell 11, the crystallization scraper support ring 15 is driven to rotate around the axis of the overhanging support column 12 by the gear transmission of the servo motor fixed on the overhanging support column 12 of the prior art, the crystallization scraper support ring 15 drives the crystallization scraper support column 152 together with the crystallization recovery scraper 16 to rotate by the outer extension support plate 151, and the salt substance crystals on the outer lateral wall of the evaporation crystallization cylinder shell 11 are scraped down by the scraping action of the crystallization recovery scraper 16;

[0055] The salt substance crystals fall and are collected at the bottom of the equipment main shell 10, the recovery push rotation ring 18 is driven to rotate around the axis of the overhanging support column 12 by the gear transmission of the servo motor fixed on the overhanging support column 12 of the prior art, the recovery push rotation ring 18 drives the recovery push scraper 181 to move, and the salt substance crystals fall into the crystallization recovery containing shell 17 at the crystallization recovery through hole 171 under the push action of the recovery push scraper 181 for centralized storage.

Claims

1. A hazardous waste chemical wastewater evaporation crystallization apparatus, characterized in that, Including device main shell (10), the device main shell (10) is equipped with vertically extending evaporation crystallization cylinder shell (11) inside; The upper and lower ends of the evaporation crystallization cylinder shell (11) are respectively fixed with coaxial overhanging support columns (12), and the two overhanging support columns (12) are respectively fixed and connected at the top and bottom inside the device main shell (10); The overhanging support column (12) is rotatably connected with an evaporation spray support ring (13), and the evaporation spray support ring (13) is fixedly connected with a vertically extending spray conveying pipe (14) through an outwardly extending support rod (131). The spray conveying pipe (14) is fixed with a plurality of evaporation spray nozzles (140) on the side close to the evaporation crystallization cylinder shell (11). The two overhanging support columns (12) are respectively rotatably connected with crystallization scraper support rings (15), and the two crystallization scraper support rings (15) are fixedly connected with a vertically extending crystallization scraper support column (152) through an outwardly extending support plate (151). The crystallization scraper support column (152) is fixed with a crystallization recovery scraper (16) on the side close to the evaporation crystallization cylinder shell (11). The edge of the crystallization recovery scraper (16) is in contact with the outer wall of the evaporation crystallization cylinder shell (11).

2. The hazardous waste chemical wastewater evaporation crystallization device according to claim 1, characterized in that, The evaporation crystallization cylinder shell (11) is fixed with a heating support column (19), and the heating support column (19) is fixed with a plurality of radial fiber collection pipes (191) extending along the evaporation crystallization cylinder shell (11). The fiber collection pipe (191) is fixed with a fiber support plate (192), and the fiber support plate (192) is fixed with a plurality of fiber fixing installation pipes (193) extending parallel to the axis direction of the fiber collection pipe (191). Each fiber fixing installation pipe (193) is fixed with a plurality of light guide fibers (190). The fiber collection pipe (191) is fixed with a focusing lens group (194) at one end close to the inner wall of the evaporation crystallization cylinder shell (11).

3. The hazardous waste chemical wastewater evaporation crystallization device according to claim 1, characterized in that, The device main shell (10) is fixed with a crystallization recovery containing shell (17) at the bottom, and the inner bottom of the device main shell (10) has a crystallization recovery through hole (171) communicating with the crystallization recovery containing shell (17); The overhanging support column (12) fixedly connected with the inner bottom of the device main shell (10) is rotatably connected with a recovery push rotation ring (18) on it. The recovery push rotation ring (18) is fixed with a recovery push scraper (181), and the recovery push scraper (181) is in contact with the inner bottom of the device main shell (10).

4. The hazardous waste chemical wastewater evaporation crystallization device according to claim 1, characterized in that, A condensation preheating mechanism (20) is arranged in connection with the device main shell (10). The condensation preheating mechanism (20) comprises a condensation preheating containing box (21), and the condensation preheating containing box (21) is fixed with a zigzag extending condensation flow pipe (22) inside; The device main shell (10) is fixed with a vapor discharge pipe (101) communicating with the inside thereof at the top, and the vapor discharge pipe (101) communicates with the upper end of the condensation flow pipe (22). The lower end of the condensing flow pipe (22) is connected with a condensate recovery tank (220); The condensing preheating containing tank (21) is fixed with a preheating input pipe (211) and a preheating output pipe (212) outside and communicated with the inside, the preheating output pipe (212) is connected with a delivery pump (23), and the output end of the delivery pump (23) is communicated with the spraying delivery pipe (14) through a pipeline.

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