CN217809092U - Chlorine-containing ethylene wastewater treatment device - Google Patents
Chlorine-containing ethylene wastewater treatment device Download PDFInfo
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- CN217809092U CN217809092U CN202221397210.5U CN202221397210U CN217809092U CN 217809092 U CN217809092 U CN 217809092U CN 202221397210 U CN202221397210 U CN 202221397210U CN 217809092 U CN217809092 U CN 217809092U
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Abstract
The utility model discloses a chlorine-containing ethylene wastewater treatment device, which comprises a wastewater stripping pipeline, an iron remover, a filter and a primary heat exchanger which are connected in sequence, wherein the primary heat exchanger is connected with the inside of the tower top of a wastewater stripping tower, one end of the wastewater stripping tower, which is close to the tower top, is connected with a recovery system, the inside of the tower bottom of the wastewater stripping tower is connected with a steam system, the bottom of the wastewater stripping tower is connected with a wastewater delivery pump, the wastewater delivery pump is connected with a secondary heat exchanger by connecting the primary heat exchanger, a circulating water pipeline is arranged in the secondary heat exchanger, the secondary heat exchanger is connected with a water cooling tower, and the bottom of the water cooling tower is provided with a water outlet; the problems that the heat exchange of the waste water in and out of the stripping water is not uniform, the iron ions in the waste water exceed the standard, impurities such as PVC resin enter a waste water system, and the temperature of the outlet water is overhigh, so that the microorganisms in the waste water treatment process die are solved.
Description
Technical Field
The utility model belongs to the technical field of polyvinyl chloride, a chlorine-containing ethylene wastewater treatment device is related to.
Background
Million tons of polyvinyl chloride projects of chemical division company of Yuan chemical group Limited in Shanxi North of China have 3 sets of wastewater stripping treatment devices, the treated wastewater is vinyl chloride-containing wastewater generated by a polymerization device, and the function of the wastewater is to strip vinyl chloride in the wastewater, so that the vinyl chloride-containing wastewater reaches the open air discharge standard (the vinyl chloride-containing gas in the wastewater in the national standard is less than or equal to 1 ppm). In the actual operation process, due to continuous optimization and modification of the device and new environmental protection requirements, the vinyl chloride-containing wastewater generated by the VCM device and the polymerization device is sent to the polymerization wastewater stripping device for treatment, so that the treatment capacity of the wastewater stripping treatment device is insufficient, and the actual production requirements cannot be met. Simultaneously in the operation process because of smuggleing a small amount of PVC resin and other particle impurity secretly in the chlorine ethylene waste water, the inside jam phenomenon that appears of long-time operation back waste water stripper waste water plate heat exchanger leads to its passageway to diminish, the waste water stripper is intake and is gone out water and can not be fine carry out heat exchange, the temperature that the waste water stripper goes out water generally is: the temperature of the waste water stripping tower after heat exchange is between 90 and 110 ℃, and the water temperature of the waste water stripping tower after heat exchange is generally as follows: the first period is 70-80 ℃, the vinyl chloride-containing wastewater cannot be well boiled in the wastewater due to the low temperature of the inlet water of the wastewater stripping tower, so that the vinyl chloride-containing gas in the outlet water of the wastewater stripping tower cannot meet the requirement of environmental protection discharge, and the microorganisms of a downstream wastewater treatment device can be dead due to the overhigh temperature of the outlet water, so that the cost is increased; and the phenomena of frequent leakage, frequent overhaul, difficult overhaul and the like occur in the actual operation process of the plate heat exchanger of the wastewater stripping tower, so that the polymerization wastewater stripping treatment device cannot continuously and stably operate. The medium is a mixed medium of gas-phase chloroethylene, PVC particles and wastewater, the main components of the medium are wastewater and gas-phase chloroethylene, and the wastewater containing the chloroethylene has serious safety risks of chloroethylene accumulation, electrostatic ignition and explosion, personnel poisoning and environmental pollution after being treated in downstream processes.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a chlorine ethylene effluent treatment plant solves the problem that impurity such as waste water strip business turn over water heat transfer inhomogeneous, waste water iron ion exceeds standard, PVC resin gets into effluent water system, the leaving water temperature is too high to lead to the death of waste water treatment process microorganism.
The utility model discloses the technical scheme who adopts is, a chlorine ethylene wastewater treatment device, including the waste water strip pipeline, de-ironing separator, filter and the one-level heat exchanger that connect gradually, in the top of the tower of waste water strip tower was connected to the one-level heat exchanger, the waste water strip tower was close to the one end on the top of the tower and is connected recovery system, and the tower bottom in-connection of waste water strip tower has steam system, and waste water strip tower connects the waste water delivery pump at the bottom of the tower, and the waste water delivery pump is through connecting the one-level heat exchanger and connecting the second grade heat exchanger, is provided with the circulating water pipeline in the second grade heat exchanger, and cooling tower is connected to the second grade heat exchanger, and cooling tower bottom is provided with the delivery port.
The utility model discloses a characteristics still lie in:
wherein the filter is a basket filter;
wherein the primary heat exchanger and the secondary heat exchanger are both spiral plate type heat exchangers;
the circulating water pipeline comprises a circulating water upper water pipeline and a circulating water return pipeline, and the circulating water upper water pipeline and the circulating water return pipeline are respectively positioned at two ends of the primary heat exchanger;
wherein the water outlet of the cooling tower is connected with a conveying pump of the cooling tower.
The utility model has the advantages that:
the utility model discloses a chloroethylene in the waste water can be got rid of to chlorine ethylene effluent treatment plant, gets rid of iron ion, PVC resin and other particle impurity in the waste water, reduces waste water temperature, and the microorganism of avoiding in the waste water process is dead, improves the performance of enterprises, avoids chloroethylene to gather and meets static and catch fire the explosion, and personnel are poisoned, and environmental pollution reduces and overhauls the frequency, reduces post personnel labour.
Drawings
FIG. 1 is a schematic view of the process flow of a device for treating wastewater containing vinyl chloride according to the present invention.
In the figure, 1, a wastewater inlet stripping pipeline, 2, an iron remover, 3, a filter, 4, a primary heat exchanger, 5, a wastewater stripping tower, 6, a recovery system, 7, a steam system, 8, a wastewater delivery pump, 9, a secondary heat exchanger, 10, a circulating water upper water pipeline, 11, a circulating water return pipeline, 12, a cooling tower and 13, a cooling tower delivery pump.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings and specific embodiments.
The utility model provides a wastewater treatment device containing vinyl chloride, which comprises an iron remover 2, a filter 3, a primary heat exchanger 4, a wastewater stripping tower 5, a wastewater delivery pump 8, a secondary heat exchanger 9, a cooling tower 12 and a cooling tower delivery pump 13, as shown in figure 1; removing iron ions in wastewater from vinyl chloride-containing wastewater generated in the production process of a polymerization and VCM device through an iron remover 2, removing PVC resin and other particle impurities in the wastewater through a basket filter 3, then exchanging heat with stripped effluent through a primary spiral plate heat exchanger, then entering a wastewater stripping tower 5, removing vinyl chloride in the wastewater through convective contact with steam entering from the top of the tower and from the bottom of the tower, entering vinyl chloride gas into a recovery system 6, entering the vinyl chloride-removed wastewater from the bottom of the tower into a primary spiral plate heat exchanger 4 through a wastewater conveying pump 8, exchanging heat with the wastewater entering the wastewater stripping tower, then entering a secondary spiral plate heat exchanger 9, taking a heat exchange medium of the secondary spiral plate heat exchanger 9 as circulating water, entering a water cooling tower 12 for cooling for three times to obtain low-temperature and low-vinyl chloride-containing wastewater, and finally conveying effluent through the water cooling tower 13 to a downstream wastewater process for treatment;
removing iron ions in the wastewater through an iron remover 2; PVC resin and other particle impurities are removed through the basket filter 3; the heat exchange of water is carried out through a primary spiral plate type heat exchanger 4; secondary heat exchange is carried out through a secondary spiral plate type heat exchanger 9; finally, the waste water with low temperature and low chloroethylene is obtained by cooling through a water cooling tower 12, and finally the discharge reaching the standard is realized;
the process flow is characterized in that a wastewater inlet stripping pipeline 1, an iron remover 2, a basket filter 3, a primary spiral plate type heat exchanger 4, a wastewater stripping tower 5, a recovery system 6, a steam system 7, a wastewater delivery pump 8, a secondary spiral plate type heat exchanger 9, a circulating water upper water pipeline 10, a circulating water return pipeline 11, a water cooling tower 12 and a water cooling tower delivery pump 13 are hermetically connected through pipelines, flanges and bolts, so that the problems of leakage of wastewater containing the chlorine, environmental pollution, personnel poisoning and ignition and explosion caused by static electricity are prevented.
Claims (5)
1. The utility model provides a chlorine ethylene effluent treatment plant, its characterized in that, including waste water strip pipeline (1), de-ironing separator (2), filter (3) and one-level heat exchanger (4) that connect gradually, in the top of the tower of waste water strip tower (5) is connected in one-level heat exchanger (4), recovery system (6) are connected to the one end that waste water strip tower (5) are close to the top of the tower, and the bottom of the tower of waste water strip tower (5) is in-connection with steam system (7), and waste water strip tower (5) is connected waste water delivery pump (8) at the bottom of the tower, and waste water delivery pump (8) are through connecting one-level heat exchanger (4) and connect secondary heat exchanger (9), are provided with the circulating water pipeline in secondary heat exchanger (9), and cold water tower (12) is connected in secondary heat exchanger (9), and cold water tower (12) bottom is provided with the delivery port.
2. A plant for the treatment of waste water containing vinyl chloride according to claim 1, characterized in that said filter (3) is a basket filter.
3. The device for treating wastewater containing vinyl chloride according to claim 1, wherein the primary heat exchanger (4) and the secondary heat exchanger (9) are both spiral plate heat exchangers.
4. The wastewater treatment device containing vinyl chloride according to claim 1, wherein the circulating water line comprises a circulating water upper water line (10) and a circulating water return line (11), and the circulating water upper water line (10) and the circulating water return line (11) are respectively located at two ends of the primary heat exchanger (4).
5. The vinyl chloride-containing wastewater treatment device according to claim 1, wherein the water outlet of the water cooling tower (12) is connected with a water cooling tower delivery pump (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397210.5U CN217809092U (en) | 2022-06-07 | 2022-06-07 | Chlorine-containing ethylene wastewater treatment device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221397210.5U CN217809092U (en) | 2022-06-07 | 2022-06-07 | Chlorine-containing ethylene wastewater treatment device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217809092U true CN217809092U (en) | 2022-11-15 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221397210.5U Active CN217809092U (en) | 2022-06-07 | 2022-06-07 | Chlorine-containing ethylene wastewater treatment device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217809092U (en) |
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2022
- 2022-06-07 CN CN202221397210.5U patent/CN217809092U/en active Active
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