CN215559529U - Production device based on calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process - Google Patents

Abstract

The utility model discloses a production device based on an optimized process of polyvinyl chloride mercury-containing wastewater by a calcium carbide method, which comprises air inlet pipes a, b and c, a reflux liquid pipe, a lower end enclosure containing chamber, a sewage outlet, a lower end enclosure, a lower sewage outlet, a baffle plate, a collecting cylinder, five reaction chambers, an upper cover, a spray opening, an upper end enclosure, a water inlet pipe, a device liquid inlet pipe, a nitrogen pipe, a device central pipe, a three-layer baffle plate, a reaction device tank body and support legs, wherein the device central pipe and the reflux liquid pipe of the reaction device tank body penetrate through the whole device from top to bottom, five reaction chambers are respectively arranged in the reaction device tank body, the air inlet pipes a, b and c in the device central pipe respectively enter each reaction chamber from bottom to top, the three layers guide wastewater baffle plates are arranged on the upper part and used for absorbing and removing impurities, a plurality of reaction chambers and filter plugs in the filter pipes are arranged in the reaction chambers, and reaction liquid with proper mixing is introduced according to the content of the wastewater impurities, the treatment is carried out step by step according to the reaction level to reach the emission standard.

Description

Production device based on calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process

Technical Field

The utility model relates to the field of a mercury-containing wastewater optimization process based on calcium carbide-process polyvinyl chloride, in particular to a production device based on a mercury-containing wastewater optimization process of calcium carbide-process polyvinyl chloride.

Background

The known mercury chloride catalyst is a catalyst for synthesizing Vinyl Chloride Monomer (VCM) by a calcium carbide method, and the main effective component of the mercury chloride catalyst is mercury chloride. Theoretically, the catalyst does not participate in the chemical reaction and its quantity and chemical nature do not change, whereas in practice, after a certain period of reaction, the catalyst deactivates and there is a loss of mercury. Most of mercury can be adsorbed in the waste catalyst and the activated carbon, a small part of mercury can enter a water alkali washing system, the alkali washing tower has periodic tower washing operation in the water alkali washing, and waste water generated in the tower washing process of the alkali washing tower is a main source of mercury-containing waste water.

The process of the mercury removal device is briefly described as follows: the method comprises the steps that waste water with PH 9-10 sent from a neutralization pond enters a primary reaction tank, the mercury content is obtained through detection, a sodium sulfide reagent is added to start reaction to generate mercury sulfide precipitate, an aluminum chloride reagent is added after the reaction is completed, the mercury sulfide precipitate is settled and discharged into a sludge tank, clear liquid obtained through settlement in the primary reaction tank is pumped into a secondary reaction tank, the mercury content of the waste water in the secondary reaction tank is obtained through detection, the dosage required in the tank is recalculated, the chemicals are added, the sludge is discharged into the sludge tank after the reaction and settlement are completed, the clear liquid obtained through settlement in the secondary reaction tank is pumped into a tertiary reaction tank, the mercury content is obtained through detection, the chemicals added in the tertiary reaction tank is calculated again, the sludge is discharged into a sludge tank after the reaction and settlement are completed, and the clear liquid enters an adsorption bed to be treated, and the waste water with qualified mercury content is discharged into production drainage. And pumping sludge in the sludge pool into a filter press for filter pressing, barreling and collecting the obtained filter cake, and delivering the filter cake to a hazardous waste disposal unit. At present, according to the 'volatile organic matter unorganized emission control standard' (GB37822-2019) published by the department of ecological environment in 2019, the standard specifies the requirements of unorganized emission control on storage of VOCs materials, unorganized emission control on transfer and transportation of VOCs materials, unorganized emission control on VOCs in a process, VOCs leakage control on equipment and pipeline components, unorganized emission control on VOCs on an open liquid surface and the requirements of a VOCs unorganized emission waste gas collection and treatment system, so that when alkaline tower wastewater is discharged into an alkaline washing neutralization tank, the alkaline tower wastewater is sent into a desorption neutralization tank to be subjected to pH value adjustment, and the alkaline tower wastewater is sent into a mercury removal device to be treated after the pH value is adjusted to 9-10. The alkaline washing tower is a packed tower, hydrogen chloride and a small amount of carbon dioxide in chloroethylene gas are removed by 5-10% and 8-15% alkali liquor, sodium carbonate generated by reaction is removed by tower washing operation, tower washing wastewater is discharged when the tower is washed, chloroethylene is separated out when the wastewater is discharged, the problem that VOCs discharge does not reach the standard exists, and the problems of production and environmental protection hidden trouble are seriously influenced.

SUMMERY OF THE UTILITY MODEL

The utility model aims to provide a production device based on a calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process, which is convenient to operate, facilitates the hierarchical treatment of mercury-containing wastewater, and ensures that the discharge of VOCs after treatment by the production device reaches the standard reasonably.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a production device based on an optimized process of calcium carbide method polyvinyl chloride mercury-containing wastewater comprises an air inlet pipe a, an air inlet pipe b, an air inlet pipe c, a reflux pipe, a lower seal head containing cavity, a drain outlet, a lower seal head drain outlet, a lower drain outlet, a baffle, a collecting cylinder, a first layer reaction chamber, a second layer reaction chamber, a third layer reaction chamber, a fourth layer reaction chamber, a fifth layer reaction chamber, an upper cover, a spray opening, an upper seal head, a water inlet pipe, a device liquid inlet pipe, a nitrogen pipe, a device central pipe, a third layer baffle plate, a second layer baffle plate, a first layer baffle plate, a reaction device groove body and supporting legs, a device central tube and a reflux liquid tube of the tank body of the reaction device penetrate through the whole device from top to bottom, and a fifth layer reaction chamber, a fourth layer reaction chamber, a third layer reaction chamber, a second layer reaction chamber and a first layer reaction chamber are respectively arranged in the tank body of the reaction device from top to bottom; an air inlet pipe a, an air inlet pipe b and an air inlet pipe c are arranged in the central pipe of the device and respectively enter each layer of reaction chamber from bottom to top; the outer wall of the tank body of the reaction device is provided with a collecting cylinder and a nitrogen pipe; the reaction device tank is internally provided with a central tube, a third layer of baffle plates, a second layer of baffle plates, a first layer of baffle plates, a separation baffle plate and a lower drainage outlet; the upper cover of the upper part of the tank body of the reaction device is provided with an upper seal head and a lower seal head; the upper part of the upper end enclosure is provided with a water inlet pipe and a liquid inlet pipe; the upper cover is provided with a spraying port.

The third layer of baffle plate, the second layer of baffle plate and the first layer of baffle plate are connected with the inner wall of the groove body of the reaction device, flat plates which occupy three quarters of the circular area of the inner wall guide the waste water to be baffled, and the upper part is provided with a packing layer for absorption and impurity removal.

The baffle plate is used for removing impurities from the wastewater treated by the three baffling layers again, and is provided with lower drainage outlets which are distributed and arranged, and a packing layer is arranged above the baffle plate and used for absorbing and removing impurities.

The first-layer reaction chamber comprises a first-layer sewage draining outlet, a first-layer sewage draining pipe, a first-layer deposition cavity, a first-layer anti-overflow cover, an air overflow pipe, a first-layer reaction cavity, a first-layer air collecting port, a filtering plug and a filtering pipe, and a plurality of first-layer reaction cavities are arranged in the first-layer reaction chamber along the center in a circular manner; the filter is characterized in that the filter plug is arranged in the filter pipe, the upper part of the first layer deposition cavity is provided with a first layer anti-overflow cover, and the lower part of the first layer deposition cavity is provided with a first layer sewage discharge pipe and a first layer sewage discharge outlet.

The first layer of reaction cavity is uniformly distributed in a circular manner, the first layer of gas collecting ports are uniformly distributed on the outer wall of the first layer of reaction cavity at regular intervals, waste gas overflows outwards to the gas overflow pipe layer by layer along the center, and the gas overflow pipes are uniformly distributed in the outermost first layer of reaction cavity and then gathered to the header pipe to be recycled to the waste gas treatment device.

The first layer of blow-off pipe and the first layer of blow-off port are connected with the collecting barrel and collected to the impurity treatment device.

The filter pipes are uniformly distributed in the first layer of reaction cavity, a filter plug is arranged in the filter pipes, and a plurality of layers of filter screens are arranged on four sides of the filter plug.

Preferably, the second layer reaction chamber, the third layer reaction chamber, the fourth layer reaction chamber and the fifth layer reaction chamber have the same structure as the first layer reaction chamber.

Preferably, the third layer of baffle plate, the second layer of baffle plate, the first layer of baffle plate, the separating baffle plate are different according to the tested medium content test result, and the filler and the targeted treatment material layer are different.

The utility model has the beneficial effects that: according to the production device based on the calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process, hydrogen chloride and a small amount of carbon dioxide in vinyl chloride gas are removed by 5-10% and 8-15% of alkali liquor in an alkaline washing tower, sodium carbonate generated by reaction is removed through tower washing operation, wastewater enters a recovered water treatment system, then enters wastewater stripping, waste gas is recovered, and the rest of the wastewater enters an analysis adjusting tank for treatment and recycling. The first layer reaction chamber 12, the second layer reaction chamber 13, the third layer reaction chamber 14, the fourth layer reaction chamber 15 and the fifth layer reaction chamber 16 can be introduced with reaction liquid with moderate mixing according to the impurity content of the wastewater, are used for removing corresponding impurities, and are treated step by step according to reaction levels, so that a targeted treatment effect is achieved; the third layer of baffle plate 24, the second layer of baffle plate 25 and the first layer of baffle plate 26 are connected with the inner wall of the tank body 27 of the reaction device, are flat plates which occupy three quarters of the circular area of the inner wall and guide wastewater to be baffled, and the upper part of the tank body is provided with a filler layer for absorption and impurity removal; the baffle 10 is used for removing impurities from the wastewater treated by the three baffling layers again, and is provided with lower liquid discharge ports 9 which are distributed and arranged, and a filler layer which is used for absorbing and removing impurities is arranged at the upper part of the baffle; nitrogen gas pipe 22 can play the effect of pressure adjustment and stirring to intensive mixing, the uniform treatment waste water, above-mentioned device processing procedure has strictly solved VOCs and has discharged not up to standard, seriously influence production and environmental protection hidden danger scheduling problem.

Drawings

FIG. 1 is a schematic structural diagram of the present invention.

FIG. 2 is a schematic view of the first layer of reaction chamber 12 and the direction A in FIG. 1 according to the present invention.

In fig. 1, 1 is an intake pipe a; 2 is an air inlet pipe b; 3 is an air inlet pipe c; 4 is a reflux liquid pipe; 5 is a lower end enclosure chamber; 6 is a sewage draining outlet; 7 is a drain outlet of the lower end enclosure; 8 is a lower end enclosure; 9 is a lower drainage outlet; 10 is a baffle plate; 11 is a collecting cylinder; 12 is a first layer reaction chamber; 13 is a second layer reaction chamber; 14 is a third layer of reaction chamber; 15 is a fourth layer reaction chamber; 16 is a fifth layer reaction chamber; 17 is an upper cover; 18 is a spraying port; 19 is an upper end enclosure; 20 is a water inlet pipe; 21 is a liquid inlet pipe of the device; 22 is a nitrogen gas pipe; 23 is a device central tube; 24 is a third layer of baffle plates; 25 is a second layer baffle plate; 26 is a first layer baffle plate; 27 is a groove body of the reaction device; and 28 are supporting legs.

In FIG. 2, 121 is a first layer of sewage draining outlet; 122 is a first layer of blow-off pipe; 123 is a first layer deposition chamber; 124 is a first layer of anti-overflow cover; 125 is an air overflow pipe; 126 is a first layer reaction chamber; 127 is a first layer air collection port; 128 is a filter plug; 129 is a filter tube.

Detailed Description

The technical solutions in the embodiments of the present invention are clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments and are not limited to the present invention.

Referring to the attached drawings 1-2, the utility model aims to provide a production device based on the calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process, which is convenient to operate, facilitates the hierarchical treatment of mercury-containing wastewater, and ensures that the discharge of VOCs after treatment by the production device reaches the standard reasonably.

In order to achieve the purpose, the utility model adopts the following technical scheme:

a production device based on a calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process comprises an air inlet pipe a1, an air inlet pipe b2, an air inlet pipe c3, a reflux liquid pipe 4, a lower seal head accommodating chamber 5, a sewage discharge outlet 6, a lower seal head sewage discharge outlet 7, a lower seal head 8, a lower sewage discharge outlet 9, a baffle plate 10, a collecting cylinder 11, a first layer reaction chamber 12, a second layer reaction chamber 13, a third layer reaction chamber 14, a fourth layer reaction chamber 15, a fifth layer reaction chamber 16, an upper cover 17, a spray outlet 18, an upper seal head 19, an water inlet pipe 20, a device liquid inlet pipe 21, a nitrogen pipe 22, a device central pipe 23, a third layer baffle plate 24, a second layer baffle plate 25, a first layer baffle plate 26, a reaction device groove 27 and a support leg 28, wherein the device central pipe 23 and the reflux liquid pipe 4 of the reaction device groove 27 penetrate through the whole device from top to bottom, the device central pipe 23 is respectively provided with the fifth layer reaction chamber 16, the lower layer baffle plate 26, the lower layer baffle plate 27 and the lower layer of the reflux liquid pipe 4, The fourth layer of reaction chamber 15, the third layer of reaction chamber 14, the second layer of reaction chamber 13 and the first layer of reaction chamber 12 are arranged in a reaction device groove body 27; an air inlet pipe a1, an air inlet pipe b2 and an air inlet pipe c3 are arranged in the central pipe 23 of the device and respectively enter each layer of reaction chamber from bottom to top; the outer wall of the tank body 27 of the reaction device is provided with a collecting cylinder 11 and a nitrogen pipe 22; a device central pipe 23, a third layer of baffle plate 24, a second layer of baffle plate 25, a first layer of baffle plate 26, a baffle plate 10 and a lower discharge outlet 9 are arranged in the reaction device groove body 27; the upper cover 17 at the upper part of the tank body 27 of the reaction device is provided with an upper seal head 19 and a lower seal head 8; the upper part of the upper end enclosure 19 is provided with a water inlet pipe 20 and a device liquid inlet pipe 21; the upper cover 17 is provided with a spraying port 18.

The third layer of baffle plate 24, the second layer of baffle plate 25 and the first layer of baffle plate 26 are connected with the inner wall of the reaction device groove body 27, are flat plates which occupy three quarters of the circular area of the inner wall and guide wastewater to be baffled, and the upper part of the reaction device groove body is provided with a filler layer for absorption and impurity removal.

The baffle 10 is used for removing impurities from the wastewater treated by the three baffling layers again, and is provided with lower liquid discharge ports 9 which are distributed and arranged, and a packing layer which is used for absorbing and removing impurities is arranged at the upper part of the baffle.

The first-layer reaction chamber 12 comprises a plurality of first-layer sewage outlets 121, first-layer sewage pipes 122, a first-layer deposition cavity 123, a first-layer overflow-preventing cover 124, an overflow pipe 125, a first-layer reaction cavity 126, a first-layer air collecting opening 127, a filter plug 128 and a filter pipe 129, and the first-layer reaction cavities 126 are arranged in the first-layer reaction chamber 12 along the central circle; the filtering pipe 129 is internally provided with a filtering plug 128, the upper part of the first layer deposition cavity 123 is provided with a first layer anti-overflow cover 124, and the lower part is provided with a first layer sewage discharge pipe 122 and a first layer sewage discharge outlet 121.

The first-layer reaction chambers 12 are uniformly distributed in a circular shape, the first-layer air collecting ports 127 are uniformly distributed on the outer wall of the first-layer reaction cavity 126 at regular intervals, the waste gas overflows outwards from the center layer to the gas overflow pipe 125, and a plurality of gas overflow pipes 125 are uniformly distributed in the outermost first-layer reaction cavity 126 and then collected to the header pipe to be recycled to the waste gas treatment device.

The first layer sewage draining pipe 122 and the first layer sewage draining outlet 121 are connected with the collecting cylinder 11 and collected to the impurity processing device.

The filter pipes 129 are uniformly distributed along the first layer of reaction chamber 126, a filter plug 128 is arranged in the filter pipe 129, and a plurality of layers of filter screens are arranged on four sides of the filter plug 12.

Preferably, the first layer reaction chamber 12, the second layer reaction chamber 13, the third layer reaction chamber 14, the fourth layer reaction chamber 15 and the fifth layer reaction chamber 16 have the same structure as the first layer reaction chamber 12.

The utility model has the beneficial effects that: according to the production device based on the calcium carbide method polyvinyl chloride mercury-containing wastewater optimization process, hydrogen chloride and a small amount of carbon dioxide in vinyl chloride gas are removed by 5-10% and 8-15% of alkali liquor in an alkaline washing tower, sodium carbonate generated by reaction is removed through tower washing operation, wastewater enters a recovered water treatment system, then enters wastewater stripping, waste gas is recovered, and the rest of the wastewater enters an analysis adjusting tank for treatment and recycling. The first layer reaction chamber 12, the second layer reaction chamber 13, the third layer reaction chamber 14, the fourth layer reaction chamber 15 and the fifth layer reaction chamber 16 can be introduced with reaction liquid with moderate mixing according to the impurity content of the wastewater, are used for removing corresponding impurities, and are treated step by step according to reaction levels, so that a targeted treatment effect is achieved; the third layer of baffle plate 24, the second layer of baffle plate 25 and the first layer of baffle plate 26 are connected with the inner wall of the tank body 27 of the reaction device, are flat plates which occupy three quarters of the circular area of the inner wall and guide wastewater to be baffled, and the upper part of the tank body is provided with a filler layer for absorption and impurity removal; the baffle 10 is used for removing impurities from the wastewater treated by the three baffling layers again, and is provided with lower liquid discharge ports 9 which are distributed and arranged, and a filler layer which is used for absorbing and removing impurities is arranged at the upper part of the baffle; nitrogen gas pipe 22 can play the effect of pressure adjustment and stirring to intensive mixing, the uniform treatment waste water, above-mentioned device processing procedure has strictly solved VOCs and has discharged not up to standard, seriously influence production and environmental protection hidden danger scheduling problem.

Based on above-mentioned utility model theory of operation and working method:

and after the wastewater of the alkaline washing tower is discharged into an alkaline washing neutralization tank, the wastewater is pumped into a desorption neutralization tank for pH value adjustment, and the wastewater is sent to a mercury removal device for treatment after the pH value is adjusted to 9-10. The alkaline tower is a packed tower, hydrogen chloride and a small amount of carbon dioxide in vinyl chloride gas are removed by 5-10% and 8-15% alkali liquor, sodium carbonate generated by reaction is removed by the operation of the tower washing, the discharge of waste water of the tower washing is carried out during the tower washing, vinyl chloride is separated out during the discharge, and VOCs are discharged. Along with the execution of emission standard, upgrade the device, adopt the mode of waste water steam stripping to the alkaline washing waste water that the scrubber came out to retrieve vinyl chloride gas, the gas after the recovery gets into vinyl chloride gas holder, and the waste water removes mercury device retort, and waste water is from discharging the beginning, and whole journey adopts airtight pipeline to carry, reduces to volatilize, environmental protection and safety.

The mercury-containing wastewater enters from the liquid inlet pipe 21 of the device and is distributed to the first layer reaction chamber 12, the second layer reaction chamber 13, the third layer reaction chamber 14, the fourth layer reaction chamber 15 and the fifth layer reaction chamber 16, and meanwhile, the solubility is increased along with the increase of the pressure according to the detection data and when the temperature is fixed. But as the pressure increases, the magnitude of the increase in solubility becomes smaller and smaller; when the pressure is constant, the solubility has a minimum value in a certain temperature range, the solubility of the chloroethylene in pure water is in a linear relation with the pressure, and the dissolution behavior of the chloroethylene accords with Henry's law; likewise, the solubility of the gas decreases as the temperature increases under partial pressure. According to the scheme made by the principle, the temperature and the pressure of each stage of reaction chambers and solutions with different contents and molar concentrations are respectively and gradually analyzed, for example, when the solution is alkaline, a certain content of hydrogen chloride acidic solution is firstly added into a fifth layer reaction chamber 16, the content and the concentration condition of wastewater in a fourth layer reaction chamber 15 are analyzed, a certain amount of hydrogen chloride acidic solution with lower concentration is then added into the fourth layer reaction chamber 15, the content and the concentration condition of wastewater in a third layer reaction chamber 14 are analyzed, then a certain content of flocculating agent is added step by step, after the treatment is finished, the content and the concentration condition of wastewater in a second layer reaction chamber 13 are analyzed, then a certain content of sodium sulfide reagent is added step by step, the content and the concentration condition of wastewater in a first layer reaction chamber 12 are analyzed, a certain content of acidic reagent or alkaline reagent or impurity removal reagent is added step by step, and whether the solution in a final lower end socket chamber 5 is qualified or not is analyzed, if the discharge standard can not be met, the waste water is refluxed to the inlet end through the reflux liquid pipe 4 and is treated again to be qualified, if the waste water is qualified, the waste water can reach the discharge standard, and the waste water can be switched to the next procedure through the reflux liquid pipe 4.

A device central pipe 23, a third layer of baffle plate 24, a second layer of baffle plate 25, a first layer of baffle plate 26, a baffle plate 10 and a lower discharge outlet 9 are arranged in the reaction device groove body 27; the upper cover 17 at the upper part of the tank body 27 of the reaction device is provided with an upper seal head 19 and a lower seal head 8; the upper end enclosure 19 comprises a water inlet pipe 20 and a device liquid inlet pipe 21; the upper cover 17 is provided with a spraying port 18. The spraying port 18 can spray and remove impurities in the device, the packing layer on the baffle plate and the packing layer on the baffle plate can carry out multiple times or place different impurities according to requirements on waste water in the device for waste water treatment, and meanwhile, nitrogen can adjust the pressure in the device and blow and remove impurities.

The impurity part can pass through the first layer deposition cavity 123 of the first layer reaction chamber 12, the first layer sewage discharge pipe 122 and the first layer sewage discharge port 121 to the collecting barrel 11, the first layer overflow-proof cover 124, the overflow pipe 125 to the first layer air collecting opening 127 can play the role of sealing and exhausting air, meanwhile, the filtering pipes 129 are evenly distributed along the first layer reaction chamber 126, the filter plug 128 is arranged in the filter plug 12, a plurality of layers of filter screens are arranged on four sides of the filter plug to play a role in filtering and removing impurities, the first layer reaction chamber 12 is provided with a plurality of layers of first layer reaction cavities 126, the first layer reaction chambers 12 are uniformly distributed in a circular shape, the first layer air collecting ports 127 are uniformly distributed on the outer wall of the first layer reaction cavities 126 at regular intervals, the waste gas overflows outwards layer by layer along the center to the gas overflow pipe 125, the overflow pipes 125 are uniformly distributed on the outermost first layer of drain pipes 122 and the outermost first layer of drain outlets 121, are connected with the collecting cylinder 11, and are collected to the impurity treatment device. All waste water of this set of device is by detection device on-line monitoring, and data display all satisfies the environmental protection requirement.

In the description of the present invention, it is to be understood that the terms "from top to bottom", "center", "longitudinal", "lateral", "length", "width", "upper", "lower", "front", "rear", "left", "right", "horizontal", and the like, indicate orientations or positional relationships based on those shown in the drawings, and are used only for convenience in describing the present invention and for simplicity in description, and do not indicate or imply that the referred apparatus or element must have a specific orientation, be configured for operation in a specific orientation, and thus, should not be construed as limiting the present invention.

Furthermore, the terms "first", "second", "third", "fourth", "fifth" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", "third", "fourth", "fifth" may explicitly or implicitly include one or more of the features. In the description of the present invention, "a plurality" means two or more unless specifically limited otherwise.

While the foregoing is directed to the preferred embodiment of the present invention, it will be understood that it is not intended to be exhaustive or to limit the utility model to the precise form disclosed, and that various modifications and adaptations may be resorted to without departing from the principles of the utility model and are intended to those skilled in the art, as will be apparent to those skilled in the art, and that various embodiments may be constructed with various modifications as are suited to the particular use contemplated, and equivalents and changes may be made without departing from the spirit and scope of the utility model.

Claims (9)

1. A production device based on calcium carbide method polyvinyl chloride mercury-containing wastewater optimization technology is characterized in that: the device comprises an air inlet pipe a, an air inlet pipe b, an air inlet pipe c, a reflux liquid pipe, a lower seal head accommodating chamber, a drain outlet, a lower seal head drain outlet, a lower drain outlet, a baffle plate, a collecting cylinder, a first layer reaction chamber, a second layer reaction chamber, a third layer reaction chamber, a fourth layer reaction chamber, a fifth layer reaction chamber, an upper cover, a spray outlet, an upper seal head, an air inlet pipe, a device liquid inlet pipe, a nitrogen pipe, a device central pipe, a third layer baffle plate, a second layer baffle plate, a first layer baffle plate, a reaction device groove body and support legs, wherein the device central pipe and the reflux liquid pipe of the reaction device groove body penetrate through the whole device from top to bottom, and the fifth layer reaction chamber, the fourth layer reaction chamber, the third layer reaction chamber, the second layer reaction chamber and the first layer reaction chamber are respectively arranged in the reaction device groove body from top to bottom; an air inlet pipe a, an air inlet pipe b and an air inlet pipe c are arranged in the central pipe of the device and respectively enter each layer of reaction chamber from bottom to top; the outer wall of the tank body of the reaction device is provided with a collecting cylinder and a nitrogen pipe; the reaction device tank is internally provided with a central tube, a third layer of baffle plates, a second layer of baffle plates, a first layer of baffle plates, a separation baffle plate and a lower drainage outlet; the upper cover of the upper part of the tank body of the reaction device is provided with an upper seal head and a lower seal head; the upper part of the upper end enclosure is provided with a water inlet pipe and a liquid inlet pipe; the upper cover is provided with a spraying port.

2. The production device based on the optimized process of the mercury-containing wastewater of the polyvinyl chloride by the calcium carbide process as claimed in claim 1, wherein the third layer of baffle plate, the second layer of baffle plate and the first layer of baffle plate are connected with the inner wall of the tank body of the reaction device, the flat plate occupies three quarters of the circular area of the inner wall, the guide wastewater is baffled, and the upper part of the flat plate is provided with a packing layer for absorption and impurity removal.

3. The production device based on the optimized process of the mercury-containing wastewater of the polyvinyl chloride by the calcium carbide process as claimed in claim 1, wherein the partition baffle is used for removing impurities again from the wastewater treated by the three layers of baffle plates, and is provided with lower drainage outlets which are distributed and arranged, and a filler layer is arranged at the upper part of the partition baffle and is used for absorbing and removing impurities.

4. The production device based on the optimized process of the mercury-containing wastewater of the polyvinyl chloride by the calcium carbide process as claimed in claim 1, wherein the first layer reaction chamber comprises a first layer sewage discharge outlet, a first layer sewage discharge pipe, a first layer deposition chamber, a first layer anti-overflow cover, an overflow pipe, a first layer reaction chamber, a first layer air collecting port, a filter plug and a filter pipe, and a plurality of layers of the first layer reaction chambers are arranged in the first layer reaction chamber along a central circle; the filter is characterized in that the filter plug is arranged in the filter pipe, the upper part of the first layer deposition cavity is provided with a first layer anti-overflow cover, and the lower part of the first layer deposition cavity is provided with a first layer sewage discharge pipe and a first layer sewage discharge outlet.

5. The production device based on the optimized process of the mercury-containing wastewater of polyvinyl chloride by using the calcium carbide method as claimed in claim 4, wherein the first-layer reaction chambers are uniformly distributed in a circular shape, the first-layer gas collecting ports are uniformly distributed on the outer wall of the first-layer reaction chambers at regular intervals, the exhaust gas overflows outwards from the center layer to the gas overflow pipes, and the gas overflow pipes are uniformly distributed in the outermost first-layer reaction chambers and then collected to the header pipe to be recycled to the exhaust gas treatment device.

6. The production device based on the optimized process of the mercury-containing wastewater of the calcium carbide process polyvinyl chloride as claimed in claim 4, wherein the first layer of blow-off pipe and the first layer of blow-off outlet are connected with a collecting cylinder and collected to an impurity treatment device.

7. The production device based on the optimized process of the mercury-containing wastewater of the calcium carbide process polyvinyl chloride as claimed in claim 4, wherein the filter pipes are uniformly distributed along the first layer of the reaction cavity, filter plugs are arranged in the filter pipes, and a plurality of layers of filter screens are arranged on four sides of each filter plug.

8. The production device based on optimized process of calcium carbide method polyvinyl chloride mercury-containing wastewater as claimed in claim 1, wherein the second layer reaction chamber, the third layer reaction chamber, the fourth layer reaction chamber and the fifth layer reaction chamber have the same structure as the first layer reaction chamber.

9. The production device based on the optimized process of the mercury-containing wastewater of the calcium carbide-process polyvinyl chloride is characterized by comprising a third layer of baffle plate, a second layer of baffle plate, a first layer of baffle plate, and a separation baffle plate, wherein the separation baffle plate is used for separating fillers and a targeted treatment material layer which are different according to the test result of the content of a medium to be tested.

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