A chemical waste liquid concentration treatment device and method

Abstract

The present application provides a chemical waste liquid concentration treatment device and method, belonging to the field of waste liquid treatment technology, including: a distribution plate, the upper end of the first separation tube rotates through the distribution plate, a first partition and a second partition are arranged in the working bin, and the area between the two is an air outlet bin, the air outlet pipe is connected to the air outlet bin, the area between the first partition and the distribution plate is a first heating zone, the air inlet pipe is connected to the first heating zone, and the connecting pipe connects the first heating zone with the area below the second partition; a second separation tube, the lower end of each first separation tube passes through the first partition and is rotated in a second separation tube, the bottom of each first separation tube is fixedly connected with a first spiral sheet, and the first spiral sheet abuts against the inner wall of the second separation tube. The present application can make the second separation tube self-cleaning during the waste liquid concentration process, reduce the risk of blockage of the second separation tube, and reduce the trouble of subsequent cleaning of the second separation tube.

Description

Technical Field

[0001] The present application relates to the technical field of waste liquid treatment, and in particular to a device and method for concentrating and treating chemical waste liquid. Background Art

[0002] Chemical wastewater usually contains organic compounds, inorganic compounds, heavy metals and suspended solids, among which high-concentration organic wastewater is a common chemical wastewater. When treating high-concentration organic wastewater, in order to make the harmful substances more concentrated for the convenience of subsequent treatment, it is usually necessary to concentrate the high-concentration organic wastewater. The existing concentration treatment methods include evaporation concentration, membrane separation technology, freeze concentration and adsorption method, among which evaporation concentration is a commonly used concentration treatment method.

[0003] Referring to the Chinese patent application document with publication number CN110407275A and titled "An Evaporation Concentration Equipment", in the patent application document, wastewater first enters the liquid storage chamber through a feed pipe, a circulating pump draws the wastewater in the liquid storage chamber into an evaporation chamber through a circulating pipe and sprays it out in an atomized spray manner, the sprayed wastewater enters a plurality of separation tubes, the high-temperature steam in the separation chamber performs heat exchange with the wastewater entering the separation tubes, part of the water in the wastewater absorbs heat and vaporizes and flows back to the liquid storage chamber through the separation tubes, while part of the high-temperature steam in the separation chamber condenses on the outer surface of the separation tube and flows to the bottom of the separation chamber, and then the high-temperature steam entering the liquid storage chamber gathers at the top of the liquid storage chamber and enters the transition tank and the gas-liquid separation tank under the suction of the circulating fan, the generated separation water flows back to the liquid storage chamber through the separation water reflux pipe, and the remaining high-temperature steam finally enters the separation chamber through the hot gas inlet through the circulating fan.

[0004] Referring to the above technical solution, when high-concentration organic wastewater is concentrated, it will produce water vapor and non-condensable gases. In order to allow the water vapor and non-condensable gases to fully exchange heat with the wastewater, the separation tube is usually set to be longer. As the wastewater flows downward in the separation tube, and the water in the wastewater is continuously vaporized through heat exchange with the high-temperature steam and non-condensable gases, the concentration of the wastewater will gradually increase, and the downward resistance of the wastewater will gradually increase, which will cause the bottom of the separation tube to be easily blocked. Summary of the invention

[0005] In order to reduce the risk of clogging at the bottom of the separation tube, the present application provides a chemical waste liquid concentration treatment device and method.

[0006] In the first aspect, the present application provides a chemical waste liquid concentration treatment device, including a working chamber, a feed pipe, an air outlet pipe, a gas-liquid separation chamber, a filter chamber, a compression pump and an air inlet pipe, and also includes: a distribution plate, a first separation tube, a first partition, a second partition, a connecting pipe, a second separation tube and a first spiral sheet; the distribution plate is arranged above the working chamber, a plurality of first separation tubes are vertically arranged and the upper ends of the first separation tubes are rotated to pass through the distribution plate, the first partition and the second partition are horizontally arranged in the working chamber from top to bottom, and the area between the bottom surface of the first partition, the top surface of the second partition and the inner wall of the working chamber is the air outlet The air outlet pipe is connected with the air outlet bin, the area between the bottom surface of the material plate and the top surface of the first partition is the first heating zone, the air inlet pipe is connected with the first heating zone, the connecting pipe connects the first heating zone with the area below the second partition, the second separation tubes and the first spiral sheets are arranged in the same number corresponding to the first separation tubes, the upper end of the second separation tubes is fixedly connected to the second partition, the lower end of each first separation tube passes through the first partition and is rotatably arranged in a second separation tube, and each first spiral sheet is fixedly connected to the bottom of a first separation tube and abuts against the inner wall of the corresponding second separation tube.

[0007] By adopting the above technical solution, when it is necessary to concentrate high-concentration organic wastewater, the wastewater falls on the distribution disk through the feed pipe, and then the wastewater falling on the distribution disk enters the first separation tube, and the high-temperature gas enters the first heating zone through the air inlet pipe to exchange heat with the wastewater in the first separation tube, and part of the water vapor in the high-temperature gas is liquefied into water droplets on the first separation tube, and the water droplets fall on the first partition. At the same time, the wastewater in the first separation tube is heated up during the heat exchange and part of the wastewater forms water vapor and non-condensable gas.

[0008] When the wastewater flows to the second separation tube, the first spiral blade transports the wastewater entering the second separation tube under the drive of the rotation of the first separation tube, and scrapes the inner wall of the second separation tube. At the same time, the water vapor and non-condensable gas entering the second separation tube enter the air outlet bin through the gap between the first separation tube and the second separation tube. Then, the water vapor and non-condensable gas entering the air outlet bin pass through the gas-liquid separation bin, the filter bin, the compression pump and the air inlet pipe into the first heating zone. Thereafter, the water vapor and non-condensable gas exchange heat with the wastewater and the temperature gradually decreases from top to bottom. Then, the water vapor and non-condensable gas enter the bottom of the second partition through the connecting pipe to continue heating the wastewater in the second partition.

[0009] In the present application, by arranging the first separation tube, the second separation tube and the first spiral blade, on the one hand, the area for the concentrated waste liquid to pass through can be increased, and the second separation tube can be continuously self-cleaned during the waste liquid concentration process, thereby reducing the risk of the bottom of the channel for the waste water to pass through being blocked, and alleviating the trouble of the subsequent need to clean the second separation tube specifically, thereby reducing the workload. On the other hand, the water vapor and non-condensable gas generated in the waste water can be discharged in advance, thereby reducing the amount of water vapor condensed into the waste water, which is beneficial to improving the concentration effect of the waste water.

[0010] Optionally, a rotating mechanism is provided on the working chamber, and the rotating mechanism is used to drive the material distribution plate to rotate, and to drive the multiple first separation tubes to rotate around their own axes respectively.

[0011] By adopting the above technical solution and setting of the rotating mechanism, multiple first separation tubes can be rotated around the center of the distribution disk, and each first separation tube can be rotated around its own axis, thereby improving the uniformity of contact between the wastewater in the separation tube and the high-temperature gas, which is beneficial to improving the heat exchange effect.

[0012] Optionally, the rotating mechanism includes a rotating source mounted on a frame, the rotating source can drive the distribution disc to rotate, an inner gear ring is fixedly connected to the distribution disc, a first gear is fixedly sleeved on each of the first separation tubes, and a plurality of the first separation tubes are organized into a plurality of ring layers according to the distance from the center of the distribution disc, the first gear on the first separation tube located in the outer ring layer can mesh with the inner gear ring, a second gear is arranged between adjacent ring layers, and the second gear can mesh with the first gear located on the adjacent ring layers.

[0013] By adopting the above technical solution, after starting the rotation source, the rotation source drives the distribution disk to rotate, the rotation of the distribution disk drives the inner gear ring to rotate, the rotation of the inner gear ring drives the first separation tube and the first gear thereon located on the outer ring layer to rotate, the rotation of the first gear on the first separation tube located on the outer ring layer drives the second gear to rotate, and the rotation of the second gear drives the first separation tube on the inner ring layer to rotate.

[0014] Optionally, a storage bin is provided on one side of the working bin, and the end of the feed pipe away from the working bin is connected to the storage bin. A conical groove is provided on the upper surface of the first partition, and a water outlet pipe is rotatably connected to the center position of the first partition, one end of the water outlet pipe is connected to the conical groove, and the end of the water outlet pipe away from the first partition passes through the second partition, the working bin and the storage bin.

[0015] By adopting the above technical solution, during heat exchange, water droplets after condensation of water vapor fall on the conical groove and enter the water outlet pipe. Through the arrangement of the storage bin through the water outlet pipe, the condensed water can preheat the wastewater in the storage bin, which is beneficial to improving energy utilization.

[0016] Optionally, the bottom of the distribution tray is fixedly connected with the same number of second spiral plates corresponding to the first separation tubes, and each of the first separation tubes is rotatably connected to a second spiral plate.

[0017] By adopting the above technical solution, the setting of the second spiral blade can, on the one hand, increase the heat exchange area between the wastewater and the high-temperature gas, which is beneficial to improving the heat exchange effect; on the other hand, it can scrape and quickly transport the water and impurities condensed on the side wall of the first separation tube, reducing the risk of heat loss due to heat absorption by the condensed water, and can facilitate the contact between water vapor and non-condensable gas and wastewater for heat exchange, which is beneficial to improving the wastewater concentration effect.

[0018] Optionally, a third partition is provided at the bottom of the working bin, and multiple second separation tubes are arranged through the third partition. The area between the second partition, the third partition and the working bin is the second heating zone. The connecting pipe is provided between below the first heating zone and above the second heating zone. An exhaust pipe is connected below the second heating zone, and the exhaust pipe is arranged through the storage bin.

[0019] By adopting the above technical solution, when the wastewater is concentrated, the water vapor and non-condensable gas with reduced temperature in the first heating zone enter the second heating zone and continue to heat the wastewater in the second separation tube. Subsequently, the remaining gas after cooling enters the exhaust pipe, and the gas in the exhaust pipe continues to heat the waste liquid in the storage bin, which is beneficial to reduce energy waste and improve energy utilization.

[0020] Optionally, the inner hole diameter of the second separation tube is larger than the outer side wall diameter of the first separation tube.

[0021] By adopting the above technical solution, the setting of the diameter of the second separation tube can facilitate the outflow of water vapor and non-condensable gas on the one hand, and can reduce the wear of the first separation tube and the second separation tube on the other hand.

[0022] In a second aspect, the present application provides a method for concentrating and treating chemical waste liquid, which is applied to a chemical waste liquid concentrating and treating device described in the first aspect, and the treatment method includes:

[0023] S1, inputting wastewater into the distribution disk and starting the rotating source, the wastewater enters the first separation tube through the distribution disk, and at the same time, water vapor and non-condensable gas are input into the first heating zone to exchange heat with the wastewater in the first separation tube, part of the water vapor condenses on the first separation tube, and the droplets are transported by the second spiral sheet and fall into the conical groove and flow out through the outlet pipe;

[0024] S2, the wastewater in the first separation tube is heated by heat exchange and forms water vapor and non-condensable gas, the water vapor and non-condensable gas overflow through the gap between the first separation tube and the second separation tube, and enter the first heating zone through the gas outlet bin, the gas outlet pipe and the gas inlet pipe, the wastewater enters the second separation tube from the first separation tube, and is transported into the bottom of the working bin through the first spiral sheet;

[0025] S3, when the non-condensable gas enters the first heating zone, the water vapor and non-condensable gas at the bottom of the first heating chamber enter the second heating zone through the connecting pipe, and the water vapor and non-condensable gas at the bottom of the second heating zone are discharged from the exhaust pipe.

[0026] By adopting the above-mentioned technical method, when water vapor performs heat exchange on the wastewater in the first separation tube, a large amount of condensed water can be quickly discharged in the middle area where the high-temperature gas temperature is higher, and the water vapor and non-condensable gas generated in the first isolation tube can flow out at the joint of the first isolation tube and the second isolation tube, thereby reducing the amount of water vapor generated by the wastewater that condenses and enters the wastewater again, which is beneficial to improving the concentration effect of the wastewater.

[0027] In summary, compared with the prior art, the present application includes at least one of the following beneficial technical effects:

[0028] 1. In the present application, by arranging the first separation tube, the second separation tube and the first spiral sheet, on the one hand, the area for the concentrated waste liquid to pass through can be increased, and the second separation tube can be continuously self-cleaned during the waste liquid concentration process, thereby reducing the risk of the bottom of the channel for the waste water to pass through being blocked, and alleviating the trouble of the subsequent need to clean the second separation tube specifically, thereby reducing the workload; on the other hand, the water vapor and non-condensable gas generated in the waste water can be discharged in advance, thereby reducing the amount of water vapor condensed into the waste water, and thereby helping to improve the concentration effect of the waste water.

[0029] 2. The setting of the second spiral blade can increase the heat exchange area between the wastewater and the high-temperature gas on the one hand, which is beneficial to improving the heat exchange effect. On the other hand, it can scrape and quickly transport the condensed water and impurities on the side wall of the first separation tube, reducing the risk of heat loss caused by the condensed water absorbing heat. It can also facilitate the contact of water vapor and non-condensable gas with the wastewater for heat exchange, which is beneficial to improving the wastewater concentration effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 This is a schematic diagram of the structure of an embodiment of the present application;

[0031] Figure 2 This is a schematic diagram of the structure of the connecting pipe in the embodiment of the present application;

[0032] Figure 3 This is a schematic diagram of the structure inside the working chamber in the embodiment of the present application;

[0033] Figure 4 This is a schematic diagram of the structure near the gas outlet bin in the embodiment of the present application;

[0034] Figure 5 This is a schematic diagram of the structure of the first spiral sheet in the embodiment of the present application;

[0035] Figure 6 Schematic diagram of the structure of the first gear and the second gear in the embodiment of the present application.

[0036] Explanation of the reference numerals: 1. working chamber; 11. feed pipe; 12. air outlet pipe; 121. gas-liquid separation chamber; 122. filter chamber; 123. compression pump; 13. air inlet pipe; 14. air outlet chamber; 15. first heating zone; 16. second heating zone; 17. exhaust pipe; 2. distribution plate; 21. first separation pipe; 211. first spiral sheet; 22. second spiral sheet; 3. first partition; 31. water outlet pipe; 4. second partition; 41. second separation pipe; 5. connecting pipe; 6. rotating mechanism; 61. rotating source; 62. inner gear ring; 63. first gear; 64. second gear; 7. storage bin; 8. third partition. DETAILED DESCRIPTION

[0037] In order to make the purpose, technical solutions and advantages of the embodiments of the present application clearer, the following will be combined with the embodiments of the present application. Figure 1-Figure 6 , the technical scheme of the embodiment of the present application is clearly and completely described. Obviously, the described embodiment is a part of the embodiment of the present application, not all of the embodiments. Based on the described embodiment of the present application, all other embodiments obtained by ordinary technicians in this field belong to the scope of protection of this application.

[0038] In a first aspect, the present application provides a chemical waste liquid concentration treatment device.

[0039] Reference Figures 1 to 5 A chemical waste liquid concentration treatment device includes a frame, a working chamber 1, a feed pipe 11, an air outlet pipe 12, a gas-liquid separation chamber 121, a filter chamber 122, a compression pump 123, an air inlet pipe 13, a distribution plate 2, a first separation pipe 21, a first partition plate 3, a second partition plate 4, a connecting pipe 5, a second separation pipe 41, a first spiral sheet 211 and a rotating mechanism 6.

[0040] Reference Figure 1 and Figure 2The frame is arranged on a horizontal plane, the working chamber 1 is vertically installed on the frame, one end of the feed pipe 11 is connected to the top of the working chamber 1, the feed pipe 11 is used to transport the waste water, one end of the outlet pipe 12 is connected to the side wall of the working chamber 1, the gas-liquid separation chamber 121, the filter chamber 122 and the compression pump 123 are all installed on the frame, and the gas-liquid separation chamber 121, the filter chamber 122 and the compression pump 123 are connected to the outlet pipe 12 in sequence, the filter chamber 122 is used to remove ammonia in the gas, the compression pump 123 is used to pressurize the passing gas to heat the gas, and the air inlet pipe 13 is arranged between the compression pump 123 and the working chamber 1. The above structure is the prior art and will not be described in detail.

[0041] Reference Figure 3 The distribution tray 2 is arranged above the working bin 1, and the wastewater transported by the feed pipe 11 falls into the distribution tray 2. A plurality of first separation tubes 21 are arranged, and the plurality of first separation tubes 21 are vertically arranged and rotatably connected to the distribution tray 2. The upper ends of the plurality of first separation tubes 21 all pass through the distribution tray 2 and are flush with the inner bottom wall of the distribution tray 2.

[0042] Reference Figure 3 and Figure 4 The first partition 3 and the second partition 4 are horizontally arranged in the working chamber 1 from top to bottom, and can partition the working chamber 1. The second separation tubes 41 are arranged in the same number corresponding to the first separation tubes 21. The upper ends of the plurality of second separation tubes 41 are fixedly connected to the second partition 4 and correspond one-to-one to the first separation tubes 21. The lower end of each first separation tube 21 passes through the first partition 3 and is rotatably arranged in a second separation tube 41, and there is a gap between the inner wall of the second separation tube 41 and the outer wall of the first separation tube 21.

[0043] Reference Figure 2 and Figure 3 The area between the first partition 3, the second partition 4 and the working chamber 1 is the air outlet chamber 14, the air outlet pipe 12 is connected to the air outlet chamber 14, the area between the first partition 3, the material tray 2 and the working chamber 1 is the first heating zone 15, the air inlet pipe 13 is connected above the first heating zone 15, and the connecting pipe 5 connects the first heating zone 15 with the area below the second partition 4 in the working chamber 1.

[0044] Reference Figure 4 and Figure 5 The same number of first spiral blades 211 are arranged corresponding to the first separation tubes 21 and correspond one to one with the first separation tubes 21. Each first spiral blade 211 is fixedly connected to the bottom of a first separation tube 21, and each first spiral blade 211 is located in a second separation tube 41 and abuts against the inner wall of the second separation tube 41. The arrangement of the first spiral blades 211 can scrape the inner wall of the second separation tube 41, thereby reducing the risk of blockage of the separation tubes.

[0045] Reference Figure 1 and Figure 3 The rotating mechanism 6 is arranged on the working chamber 1, and is used to drive the material distribution plate 2 to rotate around its own axis, and is used to drive the multiple first separation tubes 21 to rotate around their own axes respectively.

[0046] Reference Figure 3 and Figure 6 The rotating mechanism 6 includes a rotating source 61, an inner gear ring 62, a first gear 63 and a second gear 64. The rotating source 61 is installed on the working bin 1, a third gear is fixedly sleeved on the driving shaft of the rotating source 61, a fourth gear is fixedly sleeved on the outer wall of the material distributing plate 2, and the fourth gear can mesh with the third gear, and the first partition plate 3 and the second partition plate 4 are both rotatably connected to the working bin 1.

[0047] Reference Figure 6 A placement bin is provided in the material distribution disk 2, an inner gear ring 62 is fixedly connected to the inner side wall of the placement bin, the same number of first gears 63 are provided corresponding to the first separation tubes 21, and each first gear 63 is fixedly sleeved on the inner side wall of a first separation tube 21, and multiple first separation tubes 21 form multiple circles according to the distance from the center of the material distribution disk 2, the first gear 63 on the first separation tube 21 located in the outer circle layer can mesh with the inner gear ring 62, and a second gear 64 is provided between adjacent circles, and the second gear 64 can mesh with the first gear 63 located on the adjacent circle layer, and except for the outer circle layer, the first separation tubes 21 on other circles are fixedly sleeved with rotating wheels, and the rotating wheels located in the same circle layer are commonly sleeved with belts.

[0048] After starting the rotating source 61, the rotating source 61 drives the distribution disk 2 to rotate, the rotation of the distribution disk 2 drives the inner gear ring 62 to rotate, the rotation of the inner gear ring 62 drives the first separation tube 21 located on the outer ring layer and the first gear 63 thereon to rotate, the rotation of the first gear 63 on the first separation tube 21 located on the outer ring layer drives the second gear 64 to rotate, and the rotation of the second gear 64 drives the first separation tube 21 on the inner ring layer to rotate.

[0049] By setting the rotating mechanism 6, multiple first separation tubes 21 can be rotated around the center of the distribution disk 2, and each first separation tube 21 can be rotated around its own axis, thereby improving the uniformity of contact between the wastewater in the separation tube and the high-temperature gas, which is beneficial to improving the heat exchange effect.

[0050] Reference Figure 1 , Figure 3 and Figure 4A chemical waste liquid concentration treatment device also includes a storage bin 7, a conical groove and a water outlet pipe 31. The storage bin 7 is arranged on one side of the working bin 1, and the end of the feed pipe 11 away from the working bin 1 is connected to the storage bin 7, and the feed pipe 11 can transport the wastewater in the storage bin 7 under the action of the pump; the conical groove is opened on the upper surface of the first partition 3, one end of the water outlet pipe 31 rotates through the center position of the first partition 3 and is connected to the conical groove, and the end of the water outlet pipe 31 away from the first partition 3 passes through the second partition 4, the working bin 1 and the storage bin 7.

[0051] During heat exchange, water droplets after condensation of water vapor fall on the conical groove and enter the water outlet pipe 31. Through the setting of the storage bin 7 through the water outlet pipe 31, the condensed water can preheat the wastewater in the storage bin 7, which is beneficial to improve energy utilization.

[0052] Reference Figure 3 and Figure 6 , a chemical waste liquid concentration treatment device also includes a second spiral blade 22. The second spiral blade 22 is provided with the same number corresponding to the first separation tube 21, and the plurality of second spiral blades 22 are fixedly connected to the bottom of the distribution plate 2 and are located between the distribution plate 2 and the first partition plate 3. Each second spiral blade 22 is sleeved on a first separation tube 21 and is rotatably connected thereto.

[0053] Through the arrangement of the second spiral blade 22, on the one hand, the heat exchange area between the wastewater and the high-temperature gas can be increased, which is beneficial to improving the heat exchange effect; on the other hand, the condensed water and impurities on the side wall of the first separation tube 21 can be scraped and quickly transported, reducing the risk of heat loss due to heat absorption by the condensed water, and can facilitate the contact between water vapor and non-condensable gas and wastewater for heat exchange, which is beneficial to improving the wastewater concentration effect.

[0054] Reference Figure 2 and Figure 3 A chemical waste liquid concentration treatment device also includes a third partition plate 8 and an exhaust pipe 17. The third partition plate 8 is located at the lower part of the working bin 1, and the plurality of second separation pipes 41 are all arranged through the third partition plate 8. The area between the second partition plate 4, the third partition plate 8 and the working bin 1 is the second heating zone 16. The connecting pipe 5 is arranged between the lower part of the first heating zone 15 and the upper part of the second heating zone 16. The exhaust pipe 17 is arranged at the bottom of the second heating zone 16, and the exhaust pipe 17 is arranged through the storage bin 7.

[0055] When the wastewater is concentrated, the water vapor and non-condensable gas with reduced temperature in the first heating zone 15 enter the second heating zone 16 and continue to heat the wastewater in the second separation tube 41. Then, the remaining gas after cooling enters the exhaust pipe 17, and the gas in the exhaust pipe 17 continues to heat the waste liquid in the storage bin 7, which helps to reduce energy waste and improve energy utilization.

[0056] When it is necessary to concentrate the high-concentration organic wastewater, the wastewater falls on the distribution plate 2 through the feed pipe 11, and then the wastewater falling on the distribution plate 2 enters the first separation tube 21. The high-temperature gas enters the first heating zone 15 through the air inlet pipe 13 and exchanges heat with the wastewater in the first separation tube 21. Part of the water vapor in the high-temperature gas is liquefied into water droplets on the first separation tube 21, and the water droplets fall on the first partition plate 3. At the same time, when the wastewater is heated by heat exchange, water and some substances will form water vapor and non-condensable gas.

[0057] When the wastewater flows to the second separation tube 41, the first spiral blade 211 transports the wastewater entering the second separation tube 41 under the drive of the rotation of the first separation tube 21, and scrapes the inner wall of the second separation tube 41. At the same time, the water vapor and non-condensable gas entering the second separation tube 41 enter the air outlet bin 14 through the gap between the first separation tube 21 and the second separation tube 41, and then the water vapor and non-condensable gas entering the air outlet bin 14 pass through the gas-liquid separation bin 121, the filter bin 122, the compression pump 123 and the air inlet pipe 13 to enter the first heating zone 15. Thereafter, the water vapor and non-condensable gas exchange heat with the wastewater and the temperature gradually decreases from top to bottom. Then, the water vapor and non-condensable gas enter the second partition plate 4 through the connecting pipe 5 to continue heating the wastewater in the second partition plate 4.

[0058] In the present application, by providing the first separation tube 21, the second separation tube 41 and the first spiral blade 211, on the one hand, the area for the concentrated waste liquid to pass through can be increased, and the second separation tube 41 can be continuously self-cleaned during the waste liquid concentration process, thereby reducing the risk of the bottom of the channel for the waste water to pass through being blocked, and alleviating the trouble of the subsequent need to clean the second separation tube 41 specifically, thereby reducing the workload. On the other hand, the water vapor and non-condensable gas generated in the waste water can be discharged in advance, thereby reducing the amount of water vapor condensed into the waste water, which is beneficial to improving the concentration effect of the waste water.

[0059] The implementation principle of a chemical waste liquid concentration treatment device in the embodiment of the present application is:

[0060] When the chemical waste liquid is concentrated, the feed pipe 11 first inputs the wastewater in the storage bin 7 into the working bin 1, and the wastewater falls into the distribution disk 2. The rotation source 61 drives the distribution disk 2 and the inner gear ring 62 to rotate. The rotation of the distribution disk 2 drives multiple first separation tubes 21, the first partition plate 3, the second partition plate 4, the third partition plate 8 and multiple second separation tubes 41 to rotate. The rotation of the inner gear ring 62 drives multiple first separation tubes 21 to rotate around its own axis. Then the wastewater enters the first separation tube 21 from the distribution disk 2. The high-temperature gas in the first heating zone 15 heats the wastewater in the first separation tube 21 through heat exchange. Part of the water vapor is liquefied into water droplets on the second spiral sheet 22 and the first separation tube 21. The water droplets are transported by the second spiral sheet 22, gathered in the conical groove and flow out through the outlet pipe 31.

[0061] When the water vapor and the non-condensable gas heat the wastewater, the wastewater in the first separation tube 21 is heated through heat exchange and forms a gas mixed with water vapor and the non-condensable gas. Then the wastewater flows to the second separation tube 41. Driven by the first separation tube 21, the first spiral blade 211 scrapes the inner wall of the second separation tube 41 and transports the wastewater. The water vapor and the non-condensable gas enter the gas outlet bin 14 through the gap between the first separation tube 21 and the second separation tube 41. Subsequently, the water vapor and the non-condensable gas entering the gas outlet bin 14 pass through the gas-liquid separation bin 121, the filter bin 122 and the compression pump 123 to enter the first heating zone 15 and heat the wastewater.

[0062] When water vapor and non-condensable gas enter the first heating zone 15, the water vapor and non-condensable gas located at the bottom of the first heating zone 15 enter the second heating zone 16 through the connecting pipe 5 to continue heat exchange with the waste liquid in the second separation tube 41. At the same time, the water vapor and non-condensable gas located at the bottom of the second heating zone 16 flow out through the exhaust pipe 17.

[0063] In a second aspect, the present application provides a method for concentrating and treating chemical waste liquid, which is applied to a chemical waste liquid concentrating and treating device described in the first aspect, and the treatment method includes:

[0064] S1, input wastewater into the distribution disc 2 and start the rotating source 61, the wastewater passes through the distribution disc 2 and enters the first separation tube 21, and at the same time, water vapor and non-condensable gas are input into the first heating zone 15 to exchange heat with the wastewater in the first separation tube 21, part of the water vapor condenses on the first separation tube 21, and the droplets are transported by the second spiral sheet 22 and fall into the conical groove and flow out through the outlet pipe 31;

[0065] S2, the wastewater in the first separation tube 21 is heated by heat exchange and forms water vapor and non-condensable gas, the water vapor and non-condensable gas overflow through the gap between the first separation tube 21 and the second separation tube 41, and enter the first heating zone 15 through the gas outlet bin 14, the gas outlet pipe 12 and the gas inlet pipe 13, the wastewater enters the second separation tube 41 from the first separation tube 21, and is transported into the bottom of the working bin 1 through the first spiral sheet 211;

[0066] S3, when the non-condensable gas enters the first heating zone 15, the water vapor and non-condensable gas at the bottom of the first heating chamber enter the second heating zone 16 through the connecting pipe 5, and the water vapor and non-condensable gas at the bottom of the second heating zone 16 are discharged from the exhaust pipe 17.

[0067] When water vapor performs heat exchange on the wastewater in the first separation tube 21, a large amount of condensed water can be quickly discharged in the middle area where the high-temperature gas has a higher temperature, and the water vapor and non-condensable gas generated in the first isolation tube can flow out at the joint of the first isolation tube and the second isolation tube, thereby reducing the amount of water vapor generated by the wastewater that condenses and re-enters the wastewater, which is beneficial to improving the concentration effect of the wastewater.

[0068] In addition, it should be noted that in the description of this application, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0069] The above is a preferred embodiment of the present application. It should be pointed out that for ordinary technicians in this technical field, several improvements and modifications can be made without departing from the principles described in the present application. These improvements and modifications should also be regarded as the scope of protection of the present application.

Claims

1. A chemical waste liquid concentration treatment device, comprising a working chamber, a feed pipe, an air outlet pipe, a gas-liquid separation chamber, a filter chamber, a compression pump and an air inlet pipe, characterized in that: Also includes: A material distribution plate, a first separation pipe, a first partition plate, a second partition plate, a connecting pipe, a second separation pipe and a first spiral sheet; A material distribution disc is arranged above the working bin, a plurality of first separation tubes are arranged vertically and the upper ends thereof are all rotated to pass through the material distribution disc, a first baffle and a second baffle are horizontally arranged in the working bin from top to bottom in sequence, an area between the bottom surface of the first baffle, a top surface of the second baffle and an inner wall of the working bin is an air outlet bin, an air outlet pipe is connected with the air outlet bin, an area between the bottom surface of the material distribution disc and the top surface of the first baffle is a first heating zone, an air inlet pipe is connected with the first heating zone, a connecting pipe connects the first heating zone with an area below the second baffle, the second separation tubes and the first spiral sheets are arranged in the same number corresponding to the first separation tubes, an upper end of the second separation tubes is fixedly connected to the second baffle, a lower end of each first separation tube passes through the first baffle and is rotatably arranged in a second separation tube, and each first spiral sheet is fixedly connected to the bottom of a first separation tube and abuts against an inner wall of the corresponding second separation tube; A storage bin is provided on one side of the working bin, an end of the feed pipe away from the working bin is connected to the storage bin, a conical groove is provided on the upper surface of the first partition, a water outlet pipe is rotatably connected to the center of the first partition, one end of the water outlet pipe is connected to the conical groove, and an end of the water outlet pipe away from the first partition passes through the second partition, the working bin and the storage bin; A third partition is arranged at the bottom of the working bin, and multiple second separation tubes are arranged through the third partition. The area between the second partition, the third partition and the working bin is the second heating zone. The connecting pipe is arranged between below the first heating zone and above the second heating zone. An exhaust pipe is connected below the second heating zone, and the exhaust pipe is arranged through the storage bin.

2. A chemical waste liquid concentration treatment device according to claim 1, characterized in that: The working bin is provided with a rotating mechanism, which is used to drive the material distribution plate to rotate and to drive the plurality of first separation tubes to rotate around their own axes respectively.

3. A chemical waste liquid concentration treatment device according to claim 2, characterized in that: The rotating mechanism includes a rotating source installed on a frame, and the rotating source can drive the distribution disk to rotate. An inner gear ring is fixedly connected to the distribution disk, and a first gear is fixedly sleeved on each of the first separation tubes. Multiple first separation tubes form multiple ring layers according to the distance from the center of the distribution disk. The first gear on the first separation tube located in the outer ring layer can mesh with the inner gear ring. A second gear is arranged between adjacent ring layers, and the second gear can mesh with the first gear located on the adjacent ring layers.

4. A chemical waste liquid concentration treatment device according to claim 1, characterized in that: The bottom of the distribution tray is fixedly connected with the same number of second spiral plates corresponding to the first separation tubes, and each of the first separation tubes is rotationally connected with a second spiral plate.

5. The chemical waste liquid concentration treatment device according to claim 1 is characterized in that: The inner diameter of the second separation tube is larger than the outer wall diameter of the first separation tube.

6. A method for concentrating and treating chemical waste liquid, applied to a chemical waste liquid concentrating and treating device as claimed in claim 4, the method comprising: S1, inputting wastewater into the distribution disk and starting the rotating source, the wastewater enters the first separation tube through the distribution disk, and at the same time, water vapor and non-condensable gas are input into the first heating zone to exchange heat with the wastewater in the first separation tube, part of the water vapor condenses on the first separation tube, and the droplets are transported by the second spiral sheet and fall into the conical groove and flow out through the outlet pipe; S2, the wastewater in the first separation tube is heated by heat exchange and forms water vapor and non-condensable gas, the water vapor and non-condensable gas overflow through the gap between the first separation tube and the second separation tube, and enter the first heating zone through the gas outlet bin, the gas outlet pipe and the gas inlet pipe, the wastewater enters the second separation tube from the first separation tube, and is transported into the bottom of the working bin through the first spiral sheet; S3, when the non-condensable gas enters the first heating zone, the water vapor and non-condensable gas at the bottom of the first heating zone enter the second heating zone through the connecting pipe, and the water vapor and non-condensable gas at the bottom of the second heating zone are discharged from the exhaust pipe.

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