CN114735877B - Device for treating metal product hydrochloric acid waste liquid by sulfonation method - Google Patents
Device for treating metal product hydrochloric acid waste liquid by sulfonation method Download PDFInfo
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- CN114735877B CN114735877B CN202210411203.4A CN202210411203A CN114735877B CN 114735877 B CN114735877 B CN 114735877B CN 202210411203 A CN202210411203 A CN 202210411203A CN 114735877 B CN114735877 B CN 114735877B
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/06—Flash evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/02—Treatment of water, waste water, or sewage by heating
- C02F1/04—Treatment of water, waste water, or sewage by heating by distillation or evaporation
- C02F1/08—Thin film evaporation
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F1/00—Treatment of water, waste water, or sewage
- C02F1/22—Treatment of water, waste water, or sewage by freezing
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- C—CHEMISTRY; METALLURGY
- C02—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F—TREATMENT OF WATER, WASTE WATER, SEWAGE, OR SLUDGE
- C02F2103/00—Nature of the water, waste water, sewage or sludge to be treated
- C02F2103/16—Nature of the water, waste water, sewage or sludge to be treated from metallurgical processes, i.e. from the production, refining or treatment of metals, e.g. galvanic wastes
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Abstract
The invention relates to the technical field of hydrochloric acid waste liquid treatment, and discloses a device for treating a metal product hydrochloric acid waste liquid by a sulfonation method, which comprises a main reaction system for heating, evaporating and sulfonating the hydrochloric acid waste liquid, and a composite condensation system communicated with the main reaction system and used for carrying out integrated condensation treatment; the main reaction system comprises a heating evaporation system and a reaction system; the heating evaporation system comprises a liquid inlet device for shunting, a primary preheating device communicated with the liquid inlet device, a secondary preheating device communicated with the primary preheating device, and a negative pressure membrane thermal evaporation device communicated with the secondary preheating device; the secondary preheating device comprises a second heating tank with a water inlet communicated with the primary preheating device and second heating pipes uniformly and vertically arranged on the inner wall of the second heating tank; the device has the advantages of high integration degree, small occupied area and low energy consumption.
Description
Technical Field
The invention relates to the technical field of hydrochloric acid waste liquid treatment, in particular to a device for treating a metal product hydrochloric acid waste liquid by a sulfonation method.
Background
The waste acid has the dangerous characteristics of high yield, corrosivity, toxicity, reactivity and the like, and is not easy to dispose, thus causing harm to the environment and being serious in resource waste. With the stricter and stricter national environmental protection requirements, the waste acid problem can seriously restrict the development of petrochemical and chemical enterprises. The harmlessness, reduction and recycling of the waste acid can also promote the development of related technologies. The traditional and commonly used treatment technology of the steel product hydrochloric acid waste liquid comprises a neutralization precipitation method, a direct roasting method, an evaporation method, an ion exchange resin method, a membrane separation method, an extraction method, a chemical conversion method and the like; compared with the above treatment technology, the sulfonation method has the advantages of no three-waste discharge, environment-friendly and pollution-free treatment process, low energy consumption and safe treatment process.
The device for treating waste acid by a sulfonation method, which is provided by the prior art, usually needs to adopt independent equipment for treatment in the process of preparing hydrochloric acid and crystallizing sulfate by condensation, and has the defect of high energy consumption. In addition, the treatment device provided by the prior art has large occupied area, high investment and various devices, and is not beneficial to the production of middle and small-scale waste acid liquid production enterprises.
Disclosure of Invention
The invention solves the technical problems that: the device for treating the metal product hydrochloric acid waste liquid by the sulfonation method has the advantages of high integration degree, small occupied area and low energy consumption.
The technical scheme of the invention is as follows: a device for treating metal product hydrochloric acid waste liquid by a sulfonation method comprises a main reaction system and a composite condensation system, wherein the main reaction system is used for heating, evaporating and sulfonating the hydrochloric acid waste liquid, and the composite condensation system is communicated with the main reaction system and is used for carrying out integrated condensation treatment;
the main reaction system comprises a heating evaporation system and a reaction system;
the heating evaporation system comprises a liquid inlet device for shunting, a primary preheating device communicated with the liquid inlet device, a secondary preheating device communicated with the primary preheating device, and a negative pressure film thermal evaporation device communicated with the secondary preheating device;
the secondary preheating device comprises a second heating tank with a water inlet communicated with the primary preheating device, and second heating pipes uniformly and vertically arranged on the inner wall of the second heating tank;
the negative pressure film thermal evaporation device comprises a plurality of negative pressure evaporation tank bodies which are uniformly and vertically arranged on the side surface of the second heating tank, a negative pressure tank water inlet assembly which is arranged at the lower end of the negative pressure evaporation tank body and is communicated with a water outlet at the lower end of the second heating tank, a negative pressure turbofan which is arranged at the upper end of the negative pressure evaporation tank body and is used for extracting steam, a film thermal assembly which is arranged at the middle part of the negative pressure evaporation tank body, and a negative pressure tank drainage assembly which is arranged on the negative pressure evaporation tank body and is positioned between the negative pressure turbofan and the film thermal assembly;
the reaction system comprises a reaction tank which is arranged right below the negative pressure evaporation tank body and is superposed with the central axis of the negative pressure evaporation tank body; the upper end of the reaction tank is communicated with a negative pressure tank drainage assembly; the upper end of the reaction tank is provided with a negative pressure exhaust pipe, and the lower end of the reaction tank is provided with a liquid discharge pipe;
the composite condensation system comprises a condensation cavity body which is vertically arranged, an upper end connector which is arranged at the upper end of the condensation cavity body, a lower end storage device which is arranged at the lower end of the condensation cavity body, and an integrated condenser which is arranged in the condensation cavity body, the upper end of the integrated condenser is communicated with the upper end connector, and the lower end of the integrated condenser is communicated with the lower end storage device;
the lower end storage comprises a first storage chamber and a second storage chamber;
the upper end connector comprises a first connecting cavity communicated with the negative pressure exhaust pipe and the negative pressure turbofan steam exhaust end, and a second connecting cavity communicated with the liquid discharge pipe;
the integrated condenser comprises a hydrochloric acid condensation pipe and a sulfate crystallization pipe which are vertically arranged in the middle of the condensation cavity main body:
the lower end of the hydrochloric acid condensation pipe is communicated with the first storage chamber, and the upper end of the hydrochloric acid condensation pipe is communicated with the first connecting chamber;
the lower end of the sulfate crystallization pipe is communicated with the second storage chamber, and the upper end of the sulfate crystallization pipe is communicated with the second connecting chamber.
Furthermore, a cooling liquid inlet is formed in the condensation cavity body and is positioned below the upper end connector, and a cooling liquid outlet is formed in the condensation cavity body and is positioned above the lower end storage;
and a refrigeration circulation assembly is connected between the cooling liquid inlet and the cooling liquid outlet.
The setting that directly runs through condensation chamber main part through hydrochloric acid condenser pipe, sulphate crystallization pipe can make hydrochloric acid condenser pipe, sulphate crystallization pipe and coolant liquid direct contact, and the advantage can effectively improve heat exchange efficiency, reduces the heat transfer energy consumption.
Further, one-level preheating device includes a plurality of perpendicular settings at second heating jar side and with second heating jar central axis evenly distributed's first heating jar, set up and be in intermediate bottom in the first heating jar, and set up and be in first heating pipe in the first heating jar.
Can carry out preliminary heating to the hydrochloric acid waste liquid through one-level preheating device to improve negative pressure membrane heat evaporation device's heating evaporation efficiency.
Further, the middle partition plate divides the first heating tank into U-shaped channels; one end of the U-shaped channel is connected with the liquid inlet device, and the other end of the U-shaped channel is connected with the second heating tank;
the first heating pipe is a U-shaped heating pipe.
The length of the heating channel can be prolonged through the arrangement of the U-shaped channel and the U-shaped heating pipe, the floor area of the primary preheating device is reduced, and the structure is more compact.
Further, the membrane thermal assembly comprises a mounting rack arranged on the inner wall of the negative-pressure evaporation tank body, and a plurality of heating membranes uniformly arranged on the mounting rack from top to bottom;
round small holes are uniformly formed in the heating diaphragm.
The heating membrane is arranged from top to bottom, so that the waste acid liquor can vertically penetrate through the heating membrane, the waste acid liquor can be uniformly heated, and the evaporation efficiency is improved.
Further, a filtering component is movably arranged in the second storage chamber; the filtering component can filter and collect the sulfate crystals; the filter assembly can be quickly replaced through the movable arrangement of the filter assembly, sulfate is concentrated, and the filter assembly can be effectively prevented from being blocked.
Further, a sulfuric acid adding tank communicated with the reaction tank is arranged on one side of the reaction tank; sulfuric acid is added into the tank, a sulfuric acid solution participating in the reaction can be stored, and sulfate and hydrogen chloride gas can be generated with chloride through the sulfuric acid solution; thereby realizing the effective recovery of the hydrochloric acid.
Further, a pressure sensor is arranged in the negative pressure evaporation tank body; the arrangement of the pressure sensor can detect the negative pressure in the negative pressure evaporating tank body.
Preferably, the sulfate crystallization pipe is a circular crystallization pipe vertically arranged at the center of the condensation cavity main body;
the hydrochloric acid condensation pipe comprises 2-4 spiral pipelines which are arranged around the periphery of the circular crystallization pipe.
The length of the hydrochloric acid condensation pipe can be further extended through the arrangement of the spiral pipeline, so that the condensation time of the hydrogen chloride gas can be prolonged; the crystallization round pipe which is vertically arranged can effectively avoid the crystallization round pipe from being blocked.
The invention has the beneficial effects that: the invention provides a device for treating metal product hydrochloric acid waste liquid by a sulfonation method, which can realize simultaneous condensation of a hydrochloric acid condenser pipe and a sulfate crystallization pipe by arranging the hydrochloric acid condenser pipe, the sulfate crystallization pipe, a condensation cavity main body, an upper end connector and a lower end memory, and can realize high-efficiency heat exchange by directly contacting a cooling liquid with the hydrochloric acid condenser pipe and the sulfate crystallization pipe; on one hand, the device is effectively ensured to have higher cooling efficiency, and the energy consumption is effectively reduced; on the other hand, the compactness of the structure can be improved, and the occupied area is reduced; this device evaporates through the negative pressure environment that negative pressure membrane heat evaporation plant produced can reduce evaporating temperature, can effectively promote evaporation efficiency through the heating diaphragm of even setting to further reduce the energy consumption on the whole.
Drawings
FIG. 1 is a schematic structural view of the whole of embodiment 1 of the present invention;
FIG. 2 is a schematic view of the structure of a main reaction system in example 1 of the present invention;
FIG. 3 is a schematic view of the structure of a heating vaporization system in accordance with embodiment 1 of the present invention;
FIG. 4 is a schematic diagram of the structure of a composite condensing system according to embodiment 1 of the present invention;
FIG. 5 is a schematic view of the internal structure of a composite condensing system according to example 1 of the present invention;
FIG. 6 is a schematic structural view of a primary preheating device in embodiment 2 of the present invention;
FIG. 7 is a schematic view showing the structure of a heating membrane in example 3 of the present invention;
the system comprises a main reaction system 1, a composite condensation system 2, a condensation cavity body 20, an upper end connector 21, a lower end storage 22, an integrated condenser 23, a first storage chamber 220, a second storage chamber 221, a first connection chamber 210, a second connection chamber 211, a hydrochloric acid condensation pipe 230, a sulfate crystallization pipe 231, a cooling liquid inlet 200, a cooling liquid outlet 201, a heating evaporation system 3, a liquid inlet 30, a primary preheating device 31, a first heating tank 310, a middle partition plate 311, a first heating pipe 312, a secondary preheating device 32, a negative pressure film thermal evaporation device 33, a second heating tank 320, a second heating pipe 321, a negative pressure evaporation tank 330, a negative pressure tank water inlet assembly 331, a negative pressure turbofan 332, a negative pressure tank water discharge assembly 333, a 334-mounting rack 335, a heating membrane 335, a 4-reaction system 40, a reaction tank 41, a negative pressure discharge pipe 42, a gas suction pipe 43 and a sulfuric acid addition tank 43.
Detailed Description
Example 1
The device for treating the metal product hydrochloric acid waste liquid by the sulfonation method as shown in figure 1 comprises a main reaction system 1 for heating, evaporating and sulfonating the hydrochloric acid waste liquid, and a composite condensation system 2 communicated with the main reaction system 1 for integrated condensation treatment;
the main reaction system 1 comprises a heating evaporation system 3 and a reaction system 4;
as shown in fig. 2, the heating and evaporating system 3 includes a liquid inlet device 30 for splitting, a primary preheating device 31 communicated with the liquid inlet device 30, a secondary preheating device 32 communicated with the primary preheating device 31, and a negative pressure membrane thermal evaporation device 33 communicated with the secondary preheating device 32;
the secondary preheating device 32 comprises a second heating tank 320 with a water inlet communicated with the primary preheating device 31, and second heating pipes 321 uniformly and vertically arranged on the inner wall of the second heating tank 320;
as shown in fig. 3, the negative pressure membrane thermal evaporation apparatus 33 includes 6 negative pressure evaporation tank bodies 330 uniformly and vertically disposed on the side of the second heating tank 320, a negative pressure tank water inlet assembly 331 disposed at the lower end of the negative pressure evaporation tank body 330 and communicated with the water outlet at the lower end of the second heating tank 320, a negative pressure turbofan 332 disposed at the upper end of the negative pressure evaporation tank body 330 for extracting steam, a membrane thermal assembly disposed at the middle portion of the negative pressure evaporation tank body 330, and a negative pressure tank water discharge assembly 333 disposed on the negative pressure evaporation tank body 330 and located between the negative pressure turbofan 332 and the membrane thermal assembly;
the reaction system 4 comprises a reaction tank 40 which is arranged right below the negative pressure evaporating tank body 330 and is superposed with the central axis of the negative pressure evaporating tank body 330; the upper end of the reaction tank 40 is communicated with a negative pressure tank drainage component 333; the upper end of the reaction tank 40 is provided with a negative pressure air suction pipe 41, and the lower end of the reaction tank 40 is provided with a liquid discharge pipe 42;
as shown in fig. 4, the composite condensing system 2 includes a vertically arranged condensing chamber body 20, an upper end connector 21 arranged at the upper end of the condensing chamber body 20, a lower end storage 22 arranged at the lower end of the condensing chamber body 20, and an integrated condenser 23 arranged in the condensing chamber body 20 and having an upper end connected to the upper end connector 21 and a lower end connected to the lower end storage 22;
the lower reservoir 22 comprises a first storage chamber 220, a second storage chamber 221;
the upper end connector 21 comprises a first connecting chamber 210 communicated with the negative pressure extraction pipe 41 and the steam discharge end of the negative pressure turbofan 332, and a second connecting chamber 211 communicated with the drain pipe 42;
as shown in fig. 5, the integrated condenser 23 includes a hydrochloric acid condensation pipe 230 and a sulfate crystallization pipe 231 vertically disposed in the middle of the condensation chamber body 20:
the lower end of the hydrochloric acid condensation pipe 230 is communicated with the first storage chamber 220, and the upper end is communicated with the first connection chamber 210;
the lower end of the sulfate crystallization pipe 231 is communicated with the second storage chamber 221, and the upper end is communicated with the second connecting chamber 211.
A cooling liquid inlet 200 is arranged on the condensation cavity main body 20 and below the upper end connector 21, and a cooling liquid outlet 201 is arranged on the condensation cavity main body 20 and above the lower end storage 22;
the second storage chamber 221 is movably provided therein with a filter assembly.
A sulfuric acid adding tank 43 communicated with the reaction tank 40 is arranged at one side of the reaction tank 40.
A pressure sensor is arranged in the negative pressure evaporating tank 330.
A refrigeration cycle assembly is connected between the cooling liquid inlet 200 and the cooling liquid outlet 201.
The film thermal component is a heating sheet which is uniformly attached to the inner wall of the negative pressure evaporating tank body 330;
the primary preheating device 31 employs a conventional electric heating tank.
The electric heating tank, the heating sheet, the pressure sensor, the refrigeration cycle component, the negative pressure turbofan 332 and the second heating pipe 321 are all products sold in the market, and the specific product type can be selected by a person skilled in the art according to needs.
The use method of the device comprises the following steps: firstly, introducing the hydrochloric acid waste liquid into a liquid inlet device 30, carrying out preheating treatment by a primary preheating device 31, and heating the hydrochloric acid waste liquid to 40-50 ℃; then, introducing the hydrochloric acid waste liquid into a secondary preheating device 32, and heating the hydrochloric acid waste liquid to 60-80 ℃; then, the negative pressure film thermal evaporation device 33 is subjected to negative pressure evaporation, and a negative pressure turbofan 332 is used for generating negative pressure; and discharges the generated steam to the upper end connector 21; the waste liquid discharged from the negative pressure tank drainage component 333 is treated again in the reaction system 4, and a sulfuric acid solution is added to generate a hydrogen chloride gas and a sulfate solution; then, introducing hydrogen chloride gas into the hydrochloric acid condensation pipe 230 through the upper end connector 21, introducing a sulfate solution into the sulfate crystallization pipe 231, and simultaneously condensing the hydrochloric acid condensation pipe 230 and the sulfate crystallization pipe 231 by adopting the condensation cavity main body 20; finally obtaining hydrochloric acid solution and sulfate crystal.
Example 2
A device for treating metal product hydrochloric acid waste liquid by a sulfonation method comprises a main reaction system 1 for heating evaporation and sulfonation treatment of the hydrochloric acid waste liquid, and a composite condensation system 2 communicated with the main reaction system 1 and used for integrated condensation treatment;
the main reaction system 1 comprises a heating evaporation system 3 and a reaction system 4;
the heating and evaporating system 3 comprises a liquid inlet device 30 for shunting, a primary preheating device 31 communicated with the liquid inlet device 30, a secondary preheating device 32 communicated with the primary preheating device 31, and a negative pressure film thermal evaporation device 33 communicated with the secondary preheating device 32;
the secondary preheating device 32 comprises a second heating tank 320 with a water inlet communicated with the primary preheating device 31, and second heating pipes 321 uniformly and vertically arranged on the inner wall of the second heating tank 320;
the negative pressure film thermal evaporation device 33 comprises 6 negative pressure evaporation tank bodies 330 which are uniformly and vertically arranged on the side surfaces of the second heating tank 320, a negative pressure tank water inlet assembly 331 which is arranged at the lower end of the negative pressure evaporation tank body 330 and is communicated with a water outlet at the lower end of the second heating tank 320, a negative pressure turbofan 332 which is arranged at the upper end of the negative pressure evaporation tank body 330 and is used for extracting steam, a film thermal assembly which is arranged at the middle part of the negative pressure evaporation tank body 330, and a negative pressure tank drainage assembly 333 which is arranged on the negative pressure evaporation tank body 330 and is positioned between the negative pressure turbofan 332 and the film thermal assembly;
the reaction system 4 comprises a reaction tank 40 which is arranged right below the negative pressure evaporation tank body 330 and is superposed with the central axis of the negative pressure evaporation tank body 330; the upper end of the reaction tank 40 is communicated with a negative pressure tank drainage component 333; the upper end of the reaction tank 40 is provided with a negative pressure air suction pipe 41, and the lower end of the reaction tank 40 is provided with a liquid discharge pipe 42;
the composite condensation system 2 comprises a condensation cavity main body 20, an upper end connector 21, a lower end storage 22 and an integrated condenser 23, wherein the condensation cavity main body 20 is vertically arranged, the upper end connector 21 is arranged at the upper end of the condensation cavity main body 20, the lower end storage 22 is arranged at the lower end of the condensation cavity main body 20, the upper end of the integrated condenser is communicated with the upper end connector 21, and the lower end of the integrated condenser is communicated with the lower end storage 22;
the lower reservoir 22 comprises a first storage chamber 220, a second storage chamber 221;
the upper end connector 21 comprises a first connecting cavity 210 communicated with the negative pressure air exhaust pipe 41 and the steam exhaust end of the negative pressure turbofan 332, and a second connecting cavity 211 communicated with the liquid exhaust pipe 42;
the integrated condenser 23 comprises a hydrochloric acid condensation pipe 230 and a sulfate crystallization pipe 231 which are vertically arranged in the middle of the condensation cavity main body 20:
the lower end of the hydrochloric acid condensation pipe 230 is communicated with the first storage chamber 220, and the upper end is communicated with the first connection chamber 210;
the lower end of the sulfate crystallization pipe 231 is communicated with the second storage chamber 221, and the upper end is communicated with the second connecting chamber 211.
A cooling liquid inlet 200 is arranged on the condensation cavity main body 20 and below the upper end connector 21, and a cooling liquid outlet 201 is arranged on the condensation cavity main body 20 and above the lower end storage 22;
the second storage chamber 221 is movably provided therein with a filter assembly.
A sulfuric acid adding tank 43 communicated with the reaction tank 40 is arranged at one side of the reaction tank 40.
A pressure sensor is arranged in the negative pressure evaporating tank 330.
A refrigeration cycle assembly is connected between the cooling liquid inlet 200 and the cooling liquid outlet 201.
As shown in fig. 6, the primary preheating device 31 includes 6 first heating tanks 310 vertically disposed at the sides of the second heating tank 320 and uniformly distributed with the central axis of the second heating tank 320, intermediate partitions 311 disposed in the first heating tanks 310, and first heating pipes 312 disposed in the first heating tanks 310.
The middle partition 311 divides the first heating tank 310 into U-shaped channels; one end of the U-shaped channel is connected with the liquid inlet device 30, and the other end of the U-shaped channel is connected with the second heating tank 320;
the first heating pipe 312 is a U-shaped heating pipe.
The film heating assembly is a heating sheet uniformly adhered on the inner wall of the negative pressure evaporating tank body 330.
The U-shaped heating pipe, the heating sheet, the pressure sensor, the refrigeration cycle component, the negative pressure turbofan 332, and the second heating pipe 321 are all commercially available products, and the specific product type can be selected by a person skilled in the art as needed.
Example 3
A device for treating metal product hydrochloric acid waste liquid by a sulfonation method comprises a main reaction system 1 for heating, evaporating and sulfonating the hydrochloric acid waste liquid, and a composite condensation system 2 communicated with the main reaction system 1 and used for carrying out integrated condensation treatment;
the main reaction system 1 comprises a heating evaporation system 3 and a reaction system 4;
the heating and evaporating system 3 comprises a liquid inlet device 30 for shunting, a primary preheating device 31 communicated with the liquid inlet device 30, a secondary preheating device 32 communicated with the primary preheating device 31, and a negative pressure film thermal evaporation device 33 communicated with the secondary preheating device 32;
the secondary preheating device 32 comprises a second heating tank 320 with a water inlet communicated with the primary preheating device 31, and second heating pipes 321 uniformly and vertically arranged on the inner wall of the second heating tank 320;
the negative pressure film thermal evaporation device 33 comprises 6 negative pressure evaporation tank bodies 330 which are uniformly and vertically arranged on the side surfaces of the second heating tank 320, a negative pressure tank water inlet assembly 331 which is arranged at the lower end of the negative pressure evaporation tank body 330 and is communicated with a water outlet at the lower end of the second heating tank 320, a negative pressure turbofan 332 which is arranged at the upper end of the negative pressure evaporation tank body 330 and is used for extracting steam, a film thermal assembly which is arranged at the middle part of the negative pressure evaporation tank body 330, and a negative pressure tank drainage assembly 333 which is arranged on the negative pressure evaporation tank body 330 and is positioned between the negative pressure turbofan 332 and the film thermal assembly;
the reaction system 4 comprises a reaction tank 40 which is arranged right below the negative pressure evaporation tank body 330 and is superposed with the central axis of the negative pressure evaporation tank body 330; the upper end of the reaction tank 40 is communicated with a negative pressure tank drainage component 333; the upper end of the reaction tank 40 is provided with a negative pressure air exhaust pipe 41, and the lower end of the reaction tank 40 is provided with a liquid discharge pipe 42;
the composite condensation system 2 comprises a condensation cavity main body 20, an upper end connector 21, a lower end storage 22 and an integrated condenser 23, wherein the condensation cavity main body 20 is vertically arranged, the upper end connector 21 is arranged at the upper end of the condensation cavity main body 20, the lower end storage 22 is arranged at the lower end of the condensation cavity main body 20, the upper end of the integrated condenser is communicated with the upper end connector 21, and the lower end of the integrated condenser is communicated with the lower end storage 22;
the lower reservoir 22 comprises a first storage chamber 220, a second storage chamber 221;
the upper end connector 21 comprises a first connecting chamber 210 communicated with the negative pressure extraction pipe 41 and the steam discharge end of the negative pressure turbofan 332, and a second connecting chamber 211 communicated with the drain pipe 42;
the integrated condenser 23 comprises a hydrochloric acid condensation pipe 230 and a sulfate crystallization pipe 231 which are vertically arranged in the middle of the condensation cavity main body 20:
the lower end of the hydrochloric acid condensation pipe 230 is communicated with the first storage chamber 220, and the upper end is communicated with the first connection chamber 210;
the lower end of the sulfate crystallization pipe 231 is communicated with the second storage chamber 221, and the upper end is communicated with the second connecting chamber 211.
A cooling liquid inlet 200 is arranged on the condensation cavity main body 20 and below the upper end connector 21, and a cooling liquid outlet 201 is arranged on the condensation cavity main body 20 and above the lower end storage 22;
the second storage chamber 221 is movably provided therein with a filter assembly.
A sulfuric acid adding tank 43 communicated with the reaction tank 40 is arranged at one side of the reaction tank 40.
A pressure sensor is arranged in the negative pressure evaporating tank body 330.
A refrigeration circulation assembly is connected between the cooling liquid inlet 200 and the cooling liquid outlet 201.
The primary preheating device 31 includes 6 first heating tanks 310 vertically disposed at the side of the second heating tank 320 and uniformly distributed with the central axis of the second heating tank 320, a middle partition 311 disposed in the first heating tank 310, and a first heating pipe 312 disposed in the first heating tank 310.
The intermediate partition 311 divides the first heating tank 310 into U-shaped channels; one end of the U-shaped channel is connected with the liquid inlet device 30, and the other end of the U-shaped channel is connected with the second heating tank 320;
the first heating pipe 312 is a U-shaped heating pipe.
As shown in FIG. 7, the membrane thermal assembly comprises a mounting frame 334 arranged on the inner wall of the negative pressure evaporating pot 330, 8 heating membranes 335 uniformly arranged on the mounting frame 334 from top to bottom;
round small holes are uniformly arranged on the heating membrane 335.
The sulfate crystallization pipe 231 is a circular crystallization pipe vertically arranged at the center of the condensation cavity main body 20;
the hydrochloric acid condensation pipe 230 comprises 3 spiral pipes surrounding the periphery of the round crystallization pipe.
The U-shaped heating pipe, the heating diaphragm 335, the pressure sensor, the refrigeration cycle component, the negative pressure turbofan 332, and the second heating pipe 321 are all commercially available products, and the specific product type can be selected by a person skilled in the art as required.
Claims (7)
1. The device for treating the metal product hydrochloric acid waste liquid by the sulfonation method is characterized by comprising a main reaction system (1) for heating, evaporating and sulfonating the hydrochloric acid waste liquid, and a composite condensation system (2) communicated with the main reaction system (1) and used for carrying out integrated condensation treatment;
the main reaction system (1) comprises a heating evaporation system (3) and a reaction system (4);
the heating evaporation system (3) comprises a liquid inlet device (30) for shunting, a primary preheating device (31) communicated with the liquid inlet device (30), a secondary preheating device (32) communicated with the primary preheating device (31), and a negative pressure film thermal evaporation device (33) communicated with the secondary preheating device (32);
the secondary preheating device (32) comprises a second heating tank (320) with a water inlet communicated with the primary preheating device (31), and second heating pipes (321) uniformly and vertically arranged on the inner wall of the second heating tank (320);
the negative pressure film thermal evaporation device (33) comprises a plurality of negative pressure evaporation tank bodies (330) which are uniformly and vertically arranged on the side surface of the second heating tank (320), a negative pressure tank water inlet assembly (331) which is arranged at the lower end of the negative pressure evaporation tank body (330) and is communicated with a water outlet at the lower end of the second heating tank (320), a negative pressure turbofan (332) which is arranged at the upper end of the negative pressure evaporation tank body (330) and is used for extracting steam, a film thermal assembly which is arranged at the middle part of the negative pressure evaporation tank body (330), and a negative pressure tank water drainage assembly (333) which is arranged on the negative pressure evaporation tank body (330) and is positioned between the negative pressure turbofan (332) and the film thermal assembly;
the reaction system (4) comprises a reaction tank (40) which is arranged under the negative pressure evaporation tank body (330) and is superposed with the central axis of the negative pressure evaporation tank body (330); the upper end of the reaction tank (40) is communicated with a negative pressure tank drainage component (333); the upper end of the reaction tank (40) is provided with a negative pressure air extraction pipe (41), and the lower end of the reaction tank (40) is provided with a liquid discharge pipe (42);
the composite condensation system (2) comprises a condensation cavity body (20) which is vertically arranged, an upper end connector (21) which is arranged at the upper end of the condensation cavity body (20), a lower end storage device (22) which is arranged at the lower end of the condensation cavity body (20), and an integrated condenser (23) which is arranged in the condensation cavity body (20), the upper end of the integrated condenser is communicated with the upper end connector (21), and the lower end of the integrated condenser is communicated with the lower end storage device (22);
the lower end storage (22) comprises a first storage chamber (220), a second storage chamber (221);
the upper end connector (21) comprises a first connecting cavity (210) communicated with the negative pressure air exhaust pipe (41) and the steam exhaust end of the negative pressure turbofan (332), and a second connecting cavity (211) communicated with the liquid discharge pipe (42);
the integrated condenser (23) comprises a hydrochloric acid condensing pipe (230) and a sulfate crystallizing pipe (231) which are vertically arranged in the middle of the condensation cavity main body (20):
the lower end of the hydrochloric acid condensation pipe (230) is communicated with the first storage chamber (220), and the upper end of the hydrochloric acid condensation pipe is communicated with the first connecting chamber (210);
the lower end of the sulfate crystallization pipe (231) is communicated with the second storage chamber (221), and the upper end of the sulfate crystallization pipe is communicated with the second connecting chamber (211);
the primary preheating device (31) comprises a plurality of first heating tanks (310) which are vertically arranged on the side of the second heating tank (320) and are uniformly distributed along the central axis of the second heating tank (320), intermediate partition plates (311) arranged in the first heating tanks (310), and first heating pipes (312) arranged in the first heating tanks (310);
and a sulfuric acid adding tank (43) communicated with the reaction tank (40) is arranged on one side of the reaction tank (40).
2. The apparatus for treating metal product hydrochloric acid waste liquid by sulfonation method according to claim 1, wherein a cooling liquid inlet (200) is provided on the condensation chamber main body (20) below the upper end connector (21), and a cooling liquid outlet (201) is provided on the condensation chamber main body (20) above the lower end storage (22);
and a refrigeration circulation assembly is connected between the cooling liquid inlet (200) and the cooling liquid outlet (201).
3. The apparatus for treating the metal product hydrochloric acid waste liquid by the sulfonation method according to claim 1, wherein the intermediate partition (311) divides the first heating tank (310) into U-shaped channels; one end of the U-shaped channel is connected with the liquid inlet device (30), and the other end of the U-shaped channel is connected with the second heating tank (320);
the first heating pipe (312) is a U-shaped heating pipe.
4. The device for treating the metal product hydrochloric acid waste liquid by the sulfonation method according to claim 1, wherein the membrane thermal assembly comprises a mounting frame (334) arranged on the inner wall of the negative pressure evaporation tank body (330), and a plurality of heating membranes (335) uniformly arranged on the mounting frame (334) from top to bottom;
round small holes are uniformly formed in the heating membrane (335).
5. The device for treating the metal product hydrochloric acid waste liquid by the sulfonation method according to claim 1, wherein a filter assembly is movably arranged in the second storage chamber (221).
6. The device for treating the metal product hydrochloric acid waste liquid by the sulfonation method according to claim 1, wherein a pressure sensor is arranged in the negative pressure evaporation tank body (330).
7. The apparatus for treating the metal product hydrochloric acid waste liquid by the sulfonation method according to claim 1, wherein the sulfate crystallization pipe (231) is a circular crystallization pipe vertically arranged at the center of the condensation chamber main body (20);
the hydrochloric acid condensation pipe (230) comprises 2-4 spiral pipes arranged around the periphery of the circular crystallization pipe.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222997A (en) * | 1979-03-09 | 1980-09-16 | Voss Steel Corporation | Method of recovering hydrochloric acid from spent hydrochloric acid pickle waste |
| CN107419272A (en) * | 2017-09-14 | 2017-12-01 | 江苏泰特联合环保科技有限公司 | A kind of technique and device that hydrochloric acid and Preparation of Cupric Sulfate are reclaimed from acidic etching waste liquid |
| CN214693739U (en) * | 2021-04-21 | 2021-11-12 | 江苏泰特联合环保科技有限公司 | A recovery processing device for steel product hydrochloric acid pickling waste liquid |
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- 2022-04-19 CN CN202210411203.4A patent/CN114735877B/en active Active
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4222997A (en) * | 1979-03-09 | 1980-09-16 | Voss Steel Corporation | Method of recovering hydrochloric acid from spent hydrochloric acid pickle waste |
| CN107419272A (en) * | 2017-09-14 | 2017-12-01 | 江苏泰特联合环保科技有限公司 | A kind of technique and device that hydrochloric acid and Preparation of Cupric Sulfate are reclaimed from acidic etching waste liquid |
| CN214693739U (en) * | 2021-04-21 | 2021-11-12 | 江苏泰特联合环保科技有限公司 | A recovery processing device for steel product hydrochloric acid pickling waste liquid |
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