CN114314928A - Integrated production line and method for removing chloride ions and regenerating dechlorination agent from dechlorination slag - Google Patents
Integrated production line and method for removing chloride ions and regenerating dechlorination agent from dechlorination slag Download PDFInfo
- Publication number
- CN114314928A CN114314928A CN202210005308.XA CN202210005308A CN114314928A CN 114314928 A CN114314928 A CN 114314928A CN 202210005308 A CN202210005308 A CN 202210005308A CN 114314928 A CN114314928 A CN 114314928A
- Authority
- CN
- China
- Prior art keywords
- dechlorination
- slag
- chlorine
- agent
- pipe
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Images
Classifications
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/50—Improvements relating to the production of bulk chemicals
- Y02P20/584—Recycling of catalysts
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a chlorine ion removal and dechlorination slag regeneration dechlorination agent integrated production line and a method, the production line comprises a chlorine ion removal system, a dechlorination slag regeneration system and a tail gas purification system, the dechlorination slag regeneration system comprises a dechlorination slag regeneration furnace, a hot blast stove, a regenerated catalyst container, a pH regulator container and a medicament adding pipe, one side of the dechlorination slag regeneration furnace is provided with a furnace door for the dechlorination slag material boat to enter and exit, the regenerated catalyst container and the pH regulator container are respectively converged and communicated with one end of the medicament adding pipe through a regenerated catalyst adding branch pipe and a pH regulator adding branch pipe, the other end of the medicament adding pipe extends into the dechlorination slag regeneration furnace, and the regenerated catalyst adding branch pipe and the pH regulator adding branch pipe are respectively provided with a regenerated catalyst adding valve and a pH regulator adding valve; the chlorine removal slag regeneration furnace is communicated with a tail gas purification system through a tail gas exhaust pipe. Has the advantages of simple process, low cost and small amount of waste water.
Description
Technical Field
The invention belongs to the technical field of removal of harmful element chloride ions in aqueous solution, and particularly relates to an integrated production line and method for chloride ion removal and chlorine slag regeneration dechlorination agent.
Background
The chlorine-containing wastewater has the characteristics of complex components, large water quantity, wide distribution and the like, is mainly from the industries such as related chemical industry, steel production, aluminum electrolysis and aluminum processing, acid and sulfur-containing fertilizer production, glass product manufacturing and processing, non-ferrous metal smelting, thermal power generation and the like, and meanwhile, the chlorine content in surface water and underground water in some regions is also seriously overproof.
The existence of high-concentration chloride ions in the water body causes great harm to the production and living environment of human beings. Researches show that when chloride ions in the zinc sulfate electrolyte are higher than 300mg/L, the problems of serious anode loss and the like can be caused; when the concentration of chloride ions in the manganese sulfate electrolyte is too high, the problems of cathode redissolution, chlorine generation at the anode and the like can be caused; when the concentration of chloride ions in the circulating water of the power plant is higher than 400mg/L, equipment can be seriously corroded. For this reason, a large number of techniques for removing fluorine and chlorine have been developed.
Physical and chemical methods have been developed to reduce the chloride ion content of aqueous solutions. The physical method is mainly divided into a stripping method and a vacuum method, and the chemical method comprises a cuprous chloride precipitation method, a tin oxychloride precipitation method, a silver chloride precipitation method, a bismuth oxide dechlorination method, an ion exchange method and the like. The physical method is very effective for a solution having high chloride ion content, but the cost of the method is not low because the temperature of the treatment solution is required to be raised to boiling or a high-concentration acid is added. The chemical method can effectively reduce chlorine in a water solution with a small concentration, but needs complex operations including alkali washing dechlorination, acid dissolution and reduction, and has the problems of generating a large amount of waste water containing low-concentration chlorine ions and the like.
Disclosure of Invention
Aiming at the problems in the prior chlorine removal technology, the invention aims to provide an integrated production line and a method for removing chlorine ions and regenerating a chlorine removal agent from chlorine removal slag, so as to solve the problems of complex chlorine removal process, high cost and large wastewater quantity in the prior art.
The invention solves the problems through the following technical means:
an integrated production line of a chlorine ion removal and chlorine slag regeneration dechlorination agent, which comprises a chlorine ion removal system, a chlorine slag regeneration system and a tail gas purification system, the dechlorination slag regeneration system comprises a dechlorination slag regeneration furnace, a hot blast stove for blowing hot air into the dechlorination slag regeneration furnace to heat the dechlorination slag regeneration furnace to the dechlorination slag regeneration temperature, a regeneration catalyst container, a pH regulator container and a medicament adding pipe, one side of the dechlorination slag regeneration furnace is provided with a furnace door for the dechlorination slag material boat to enter and exit, the regenerated catalyst container and the pH regulator container are respectively converged and communicated with one end of the medicament adding pipe through a regenerated catalyst adding branch pipe and a pH regulator adding branch pipe, the other end of the agent adding pipe extends into the dechlorination slag regeneration furnace, and a regenerated catalyst adding valve and a pH regulator adding valve are respectively arranged on the regenerated catalyst adding branch pipe and the pH regulator adding branch pipe; the chlorine removal slag regeneration furnace is communicated with a tail gas purification system through a tail gas exhaust pipe.
Further, the tail gas purification system comprises a tail gas absorption reaction tank, an absorption liquid circulating cooling tank and an absorption liquid circulating pumping system, one end of the tail gas discharge pipe is communicated with the inside of the dechlorination slag regeneration furnace, the other end of the tail gas discharge pipe is communicated with the tail gas absorption reaction tank, the tail gas absorption reaction tank and the absorption liquid circulating cooling tank are communicated through flow guide holes in the bottom, and a flow equalizing screen plate is arranged at a position, close to the top, in the tail gas absorption reaction tank. In the working process, the flue gas generated by the dechlorination slag regeneration system is guided into the tail gas absorption reaction tank through the tail gas exhaust pipe, and the absorption liquid circularly pumped by the absorption liquid circulating pumping system is uniformly sprayed to the flue gas after being dispersed by the flow equalizing screen plate, so that the mixing uniformity of the flue gas and the absorption liquid is greatly improved, and the flue gas purification effect is improved. Particularly, absorption liquid circulating pumping system includes circulating pump, inlet tube and outlet pipe, the end of intaking of circulating pump passes through the inlet tube and absorbs liquid circulation cooling tank intercommunication, and the outlet end passes through the outlet pipe and tail gas absorption reaction tank intercommunication. The water outlet end of the water outlet pipe is positioned above the flow equalizing screen plate, and the tail gas discharge pipe extends to the lower part of the flow equalizing screen plate. The absorption liquid in the absorption liquid circulating cooling pond flows into the tail gas absorption reaction pond through the water inlet pipe, the circulating water pump and the water outlet pipe, and the absorption liquid in the tail gas absorption reaction pond flows into the absorption liquid circulating cooling pond through the water conservancy diversion hole by oneself, so realizes the cyclic utilization of absorption liquid.
Furthermore, an overflow pipe is arranged on one side of the absorption liquid circulating cooling pool, and the overflow pipe has the functions of overflow and ventilation.
The tail gas absorbs the reaction tank and adopts totally-enclosed mode, and is further, the tail gas absorbs the reaction tank and passes through induced air system and absorption liquid cooling back tank intercommunication, the induced air system includes induced duct and the draught fan of setting on the induced duct, the one end of induced duct and the top intercommunication of tail gas absorption reaction tank, the other end extends to under the liquid level of absorption liquid cooling back tank. The upper space of the tail gas absorption reaction tank is sucked into the absorption liquid circulating cooling tank through the draught fan, and the absorption liquid in the absorption liquid circulating cooling tank is used for absorption and purification, so that the purification effect of the tail gas is improved.
Further, the chloride ion removal system comprises a chloride ion removal reaction tank, a plate-and-frame filter press and a chlorine removal slag material boat which are sequentially arranged from top to bottom, wherein the chloride ion removal reaction tank is provided with an injection port, a chlorine removal agent feeding port and stirring equipment, the bottom of the chloride ion removal reaction tank is provided with a discharge pipe, and the discharge pipe is provided with a discharge valve; the feed inlet of the plate-and-frame filter press is in butt joint with the discharge pipe, and the slag outlet of the plate-and-frame filter press is positioned above the dechlorination slag material boat.
Furthermore, an ultrasonic generator is arranged on one side of the dechlorination slag regeneration furnace, and the ultrasonic wave has the function of accelerating dechlorination reaction.
Further, one end of the agent adding pipe, which is positioned in the dechlorination slag regeneration furnace, is provided with an agent equalizing pipe, and a plurality of agent adding nozzles are uniformly arranged on the agent equalizing pipe at intervals so as to enable the agent to be uniformly added into the dechlorination slag material boat.
All structures and components of the device are made of corrosion-resistant and high-temperature-resistant materials in matching.
A method for removing chloride ions and regenerating a dechlorination agent from dechlorination slag comprises the following steps:
firstly, carrying out dechlorination operation to obtain dechlorination slag
Firstly, injecting a solution to be dechlorinated into a dechlorination reaction tank from an injection port, and adding a dechlorination agent into the dechlorination reaction tank from a dechlorination agent addition port;
and secondly, starting the stirring equipment to perform stirring reaction, opening a discharge valve, putting the reaction material into a plate-and-frame filter press to perform filtration, wherein the filtered solution is the solution with the chloride ion concentration reaching the standard, and the dechlorination slag enters a dechlorination slag material boat.
Second, regenerating the dechlorination agent from the dechlorination slag
Firstly, injecting absorption liquid into a tail gas absorption reaction tank and an absorption liquid circulating cooling tank; the absorption liquid is water or alkali liquor, the initial height of the added water or alkali liquor is higher than the lower part of the water inlet pipe and the upper part of the diversion hole so as to ensure that the absorption liquid capable of absorbing harmful components in the reaction tail gas circulates in the tail gas purification system when the system is just started, and the alkali liquor is a solution with any concentration prepared from any one of sodium carbonate, sodium bicarbonate, sodium hydroxide and potassium hydroxide;
opening a furnace door, pushing the dechlorination slag material boat filled with the dechlorination slag into a dechlorination slag regeneration furnace, closing the furnace door, opening a regenerated catalyst adding valve, and closing the regenerated catalyst adding valve after the dechlorination slag regeneration catalyst flows into the dechlorination slag material boat according to requirements;
starting the circulating pump, the ultrasonic generator and the hot blast stove to heat the dechlorination slag regenerating furnace to the dechlorination slag regenerating temperature and start the regeneration reaction;
fourthly, after the regeneration reaction is finished, the ultrasonic generator, the hot blast stove and the anticorrosion circulating pump are closed; opening a pH regulator adding valve to enable the pH regulator to flow into the chlorine removal slag material boat according to requirements, regulating the pH value to obtain the regenerated chlorine removal agent, then opening a furnace door, pulling the chlorine removal slag material boat filled with the regenerated chlorine removal agent out of the furnace through a crawler belt, reloading the chlorine removal slag material boat into a chlorine removal reaction tank, and repeating the first step and the second step to realize cyclic chlorine removal.
The dechlorination slag refers to chlorine-containing slag obtained by treating an aqueous solution with the content of chloride ions of 0.5 mg/L-10 g/L by using a dechlorinating agent, and particularly refers to chlorine-containing slag generated by water bodies containing chloride ions related to enterprises such as electroplating, zinc hydrometallurgy, manganese electrowinning, thermal power generation and the like; the chlorine removal agent is a material which can form a precipitate with chlorine ions, and preferably a material which contains any one of Cu, Bi, Ag or Sn or a composite of the four elements in any proportion; the regeneration method of the dechlorination slag provided by the invention has simple working procedures, and can return to the aqueous solution to remove the chlorine continuously only by treating the dechlorination slag in the regeneration production line.
The invention has the beneficial effects that:
(1) the chlorine ion removal and chlorine residue regeneration dechlorination agent integrated production line and the method realize the removal of chlorine ions and the activation and recycling of the chlorine residue, and in the dechlorination process, the regenerated dechlorination agent can be obtained only by pushing the chlorine residue generated by the chlorine ion removal system into the chlorine residue regeneration system, and the cyclic operation of dechlorination can be realized by adding the regenerated dechlorination agent into the chlorine ion removal system, so that the dechlorination process is simplified, the use of the dechlorination agent is reduced, and the process cost is reduced.
(2) The chlorine ion removal and chlorine residue regeneration dechlorination agent integrated production line and the method realize the regeneration of the dechlorination agent, greatly exert the efficiency of the dechlorination agent and reduce the dechlorination cost to the maximum extent;
(3) the tail gas purification system can lead the concentration of chloride ions to be concentrated by hundreds of times compared with the concentration of the solution to be treated and also can concentrate by hundreds of times sometimes due to the continuous circulation of the absorption solution, thereby greatly reducing the discharge of waste water;
(4) the purity of the obtained salt in the tail gas purification system designed by the invention can reach the industrial salt level, and high-valued and resource utilization of harmful element chloride ions in the liquid to be treated is realized.
In conclusion, the production line can efficiently exert the efficiency of the chlorine removal agent, is simple to operate, greatly reduces the discharge of waste water and converts harmful chlorine elements into valuable resources.
Drawings
The invention is further described below with reference to the figures and examples.
FIG. 1 is a schematic flow diagram of an integrated production line of a chlorine ion removal and chlorine slag regeneration dechlorination agent according to the present invention;
FIG. 2 is a schematic diagram of a chloride ion removal system of the present invention;
FIG. 3 is a schematic view of a dechlorination slag regeneration system of the present invention;
fig. 4 is a schematic view of an exhaust gas purification system of the present invention.
Detailed Description
The present invention will be described in detail below with reference to the accompanying drawings.
The technical solutions in the embodiments of the present invention will be 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 of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-4, the present embodiment provides an integrated production line of chlorine removal and chlorine slag regeneration dechlorination agent, which comprises a chlorine ion removal system, a chlorine slag regeneration system and a tail gas purification system, the dechlorination slag regeneration system comprises a dechlorination slag regeneration furnace 104, a hot-blast stove 105 for blowing hot air into the dechlorination slag regeneration furnace to heat the dechlorination slag regeneration furnace to the dechlorination slag regeneration temperature, a regeneration catalyst container 107, a pH regulator container 110 and a medicament adding pipe 112, one side of the chlorine removal slag regeneration furnace is provided with a furnace door 102 for the chlorine removal slag material boat 101 to enter and exit, the regenerated catalyst container and the pH regulator container are respectively communicated with one end of the medicament adding pipe through a regenerated catalyst adding branch pipe 108 and a pH regulator adding branch pipe 109, the other end of the reagent adding pipe extends into the dechlorination slag regeneration furnace, and a regenerated catalyst adding valve 106 and a pH regulator adding valve 111 are respectively arranged on the regenerated catalyst adding branch pipe and the pH regulator adding branch pipe; the chlorine removal slag regenerating furnace is communicated with a tail gas purification system through a tail gas exhaust pipe 3.
The tail gas purification system comprises a tail gas absorption reaction tank 201, an absorption liquid circulating cooling tank 207 and an absorption liquid circulating pumping system, one end of a tail gas discharge pipe is communicated with the inside of the dechlorination slag regeneration furnace, the other end of the tail gas discharge pipe is communicated with the tail gas absorption reaction tank, the tail gas absorption reaction tank and the absorption liquid circulating cooling tank are communicated through a flow guide hole 208 at the bottom, and a flow equalizing mesh plate 202 is arranged at a position, close to the top, in the tail gas absorption reaction tank. In the working process, the flue gas generated by the dechlorination slag regeneration system is guided into the tail gas absorption reaction tank through the tail gas exhaust pipe, and the absorption liquid circularly pumped by the absorption liquid circulating pumping system is uniformly sprayed to the flue gas after being dispersed by the flow equalizing screen plate, so that the mixing uniformity of the flue gas and the absorption liquid is greatly improved, and the flue gas purification effect is improved. Specifically, the absorption liquid circulating pumping system comprises a circulating pump 204, a water inlet pipe 205 and a water outlet pipe 203, wherein the water inlet end of the circulating pump is communicated with the absorption liquid circulating cooling tank through the water inlet pipe, and the water outlet end of the circulating pump is communicated with the tail gas absorption reaction tank through the water outlet pipe. The water outlet end of the water outlet pipe is positioned above the flow equalizing screen plate, and the tail gas discharge pipe extends to the lower part of the flow equalizing screen plate. The absorption liquid in the absorption liquid circulating cooling pond flows into the tail gas absorption reaction pond through the water inlet pipe, the circulating water pump and the water outlet pipe, and the absorption liquid in the tail gas absorption reaction pond flows into the absorption liquid circulating cooling pond through the water conservancy diversion hole by oneself, so realizes the cyclic utilization of absorption liquid.
An overflow pipe 206 is arranged on one side of the absorption liquid circulating cooling pool, and the overflow pipe has the functions of overflow and ventilation.
The tail gas absorbs the reaction tank and adopts totally-enclosed mode, the tail gas absorbs the reaction tank and passes through induced air system and absorption liquid cooling back tank intercommunication, the induced air system includes induced duct 210 and sets up draught fan 209 on the induced duct, the one end of induced duct and the top intercommunication of tail gas absorption reaction tank, the other end extends to under the liquid level of absorption liquid cooling back tank. The upper space of the tail gas absorption reaction tank is sucked into the absorption liquid circulating cooling tank through the draught fan, and the absorption liquid in the absorption liquid circulating cooling tank is used for absorption and purification, so that the purification effect of the tail gas is improved.
The chloride ion removal system comprises a chloride ion removal reaction tank 404, a plate-and-frame filter press 401 and a chlorine removal slag material boat 101 which are sequentially arranged from top to bottom, wherein the chloride ion removal reaction tank is provided with an injection port 407, a chlorine removal agent feeding port 406 and stirring equipment 405, the bottom of the chloride ion removal reaction tank is provided with a discharge pipe 403, and the discharge pipe is provided with a discharge valve 402; the feed inlet of the plate-and-frame filter press is in butt joint with the discharge pipe, and the slag outlet of the plate-and-frame filter press is positioned above the dechlorination slag material boat.
An ultrasonic generator 114 is arranged on one side of the dechlorination slag regenerating furnace, and the ultrasonic wave has the function of accelerating dechlorination reaction.
One end of the medicament adding pipe, which is positioned in the dechlorination slag regeneration furnace, is provided with a medicament equalizing pipe 103, and a plurality of medicament adding nozzles 113 are uniformly arranged on the medicament equalizing pipe at intervals so as to uniformly add the medicaments into the dechlorination slag material boat.
All structures and components of the device are made of corrosion-resistant and high-temperature-resistant materials in matching.
A method for removing chloride ions and regenerating a dechlorination agent from dechlorination slag comprises the following steps:
firstly, carrying out dechlorination operation to obtain dechlorination slag
Firstly, injecting a solution to be dechlorinated into a dechlorination reaction tank from an injection port, and adding a dechlorination agent into the dechlorination reaction tank from a dechlorination agent addition port;
and secondly, starting the stirring equipment to perform stirring reaction, opening a discharge valve, putting the reaction material into a plate-and-frame filter press to perform filtration, wherein the filtered solution is the solution with the chloride ion concentration reaching the standard, and the dechlorination slag enters a dechlorination slag material boat.
Second, regenerating the dechlorination agent from the dechlorination slag
Firstly, injecting absorption liquid into a tail gas absorption reaction tank and an absorption liquid circulating cooling tank; the absorption liquid is water or alkali liquor, the initial height of the added water or alkali liquor is higher than the lower part of the water inlet pipe and the upper part of the diversion hole so as to ensure that the absorption liquid capable of absorbing harmful components in the reaction tail gas circulates in the tail gas purification system when the system is just started, and the alkali liquor is a solution with any concentration prepared from any one of sodium carbonate, sodium bicarbonate, sodium hydroxide and potassium hydroxide;
opening a furnace door, pushing the dechlorination slag material boat filled with the dechlorination slag into a dechlorination slag regeneration furnace, closing the furnace door, opening a regenerated catalyst adding valve, and closing the regenerated catalyst adding valve after the dechlorination slag regeneration catalyst flows into the dechlorination slag material boat according to requirements;
starting the circulating pump, the ultrasonic generator and the hot blast stove to heat the dechlorination slag regenerating furnace to the dechlorination slag regenerating temperature and start the regeneration reaction;
fourthly, after the regeneration reaction is finished, the ultrasonic generator, the hot blast stove and the anticorrosion circulating pump are closed; opening a pH regulator adding valve to enable the pH regulator to flow into the chlorine removal slag material boat according to requirements, regulating the pH value to obtain the regenerated chlorine removal agent, then opening a furnace door, pulling the chlorine removal slag material boat filled with the regenerated chlorine removal agent out of the furnace through a crawler belt, reloading the chlorine removal slag material boat into a chlorine removal reaction tank, and repeating the first step and the second step to realize cyclic chlorine removal.
The dechlorination slag refers to chlorine-containing slag obtained by treating an aqueous solution with the content of chloride ions of 0.5 mg/L-10 g/L by using a dechlorinating agent, and particularly refers to chlorine-containing slag generated by water bodies containing chloride ions related to enterprises such as electroplating, zinc hydrometallurgy, manganese electrowinning, thermal power generation and the like; the chlorine removal agent is a material which can form a precipitate with chlorine ions, and preferably a material which contains any one of Cu, Bi, Ag or Sn or a composite of the four elements in any proportion; the regeneration method of the dechlorination slag provided by the invention has simple working procedures, and can return to the aqueous solution to remove the chlorine continuously only by treating the dechlorination slag in the regeneration production line.
The invention will be further described with reference to the following drawings and examples, but the invention is not limited thereto.
Example 1 method for removing chloride ions from power plant wastewater and regenerating dechlorinating agent from dechlorinating slag
In the embodiment, a dilute sulfuric acid solution of stannous sulfate is used as a dechlorinating agent, wherein the concentration of tin ions is 200g/L, and the concentration of sulfuric acid is 100 g/L; the regenerated catalyst used for regenerating the dechlorination slag is concentrated sulfuric acid; the pH value of the treated power plant wastewater is 9-10, and the concentration of chloride ions in the wastewater is 800mg/L.
The specific implementation of this embodiment includes the following steps:
step 1, obtaining dechlorination slag.
The dechlorinating agent is measured according to 1.5 percent (volume ratio) of the total amount of the wastewater to be treated, the wastewater is dechlorinated under the condition of continuous stirring, the chloride ions in the wastewater can be reduced to be below 100mg/L, and the dechlorinating principle is as follows:
Sn2++Cl-+H2O＝Sn(OH)Cl↓+H+
and step 2, activating the dechlorination slag.
Pushing the dechlorination slag material boat containing the dechlorination slag into a dechlorination slag regeneration furnace, adding a dechlorination slag regeneration catalyst concentrated sulfuric acid into the dechlorination slag material boat according to a liquid-solid ratio of 3:1, and closing a furnace door; then, the circulating pump, the hot blast stove and the ultrasonic generator are sequentially started, and the temperature in the stove is maintained at 150 ℃. After reacting for 2h, the heat source is closed, and the regenerated chlorine removal agent is obtained in the chlorine removal slag material boat.
The activation principle of the dechlorination slag is as follows:
Sn(OH)Cl+H2SO4＝SnSO4+HCl↑+H2O↑
and (3) filling the regenerated concentrated sulfuric acid and stannous sulfate into a dechlorination reaction tank, and repeating the step 1 and the step 2 to realize cyclic dechlorination. After 150 cycles, the concentration of the chloride ions in the treated wastewater can still be maintained at about 200 mg/L.
In the embodiment, the tail gas is absorbed by the sodium hydroxide solution, and the chloride ion concentration in the absorbed liquid can reach more than 200g/L through continuous circulation, wherein the concentration is close to 300 times of the chloride ion concentration in the wastewater, so that the wastewater amount is obviously reduced.
Finally, the above embodiments are only for illustrating the technical solutions of the present invention and not for limiting, although the present invention has been described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that modifications or equivalent substitutions may be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all of them should be covered in the claims of the present invention.
Claims (10)
1. The utility model provides an integrative production line of chloridion desorption and dechlorination sediment regeneration dechlorination agent which characterized in that: comprises a chloride ion removing system, a dechlorination slag regenerating system and a tail gas purifying system, wherein the dechlorination slag regenerating system comprises a dechlorination slag regenerating furnace (104), a hot blast stove (105) for blowing hot air into the dechlorination slag regenerating furnace to heat the dechlorination slag regenerating furnace to the dechlorination slag regenerating temperature, a regenerated catalyst container (107), a pH regulator container (110) and a medicament adding pipe (112), one side of the chlorine removal slag regeneration furnace is provided with a furnace door (102) for the chlorine removal slag material boat to enter and exit, the regenerated catalyst container and the pH regulator container are respectively communicated with one end of the medicament adding pipe through a regenerated catalyst adding branch pipe (108) and a pH regulator adding branch pipe (109), the other end of the agent adding pipe extends into the dechlorination slag regeneration furnace, and a regenerated catalyst adding valve (106) and a pH regulator adding valve (111) are respectively arranged on the regenerated catalyst adding branch pipe and the pH regulator adding branch pipe; the chlorine removal slag regeneration furnace is communicated with a tail gas purification system through a tail gas exhaust pipe (3).
2. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 1, which is characterized in that: the tail gas purification system comprises a tail gas absorption reaction tank (201), an absorption liquid circulating cooling tank (207) and an absorption liquid circulating pumping system, one end of a tail gas discharge pipe is communicated with the inside of the dechlorination slag regeneration furnace, the other end of the tail gas discharge pipe is communicated with the tail gas absorption reaction tank, and the tail gas absorption reaction tank is communicated with the absorption liquid circulating cooling tank through a flow guide hole (208) at the bottom.
3. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 2, which is characterized in that: the absorption liquid circulating pumping system comprises a circulating pump (204), an inlet pipe (205) and an outlet pipe (203), wherein the water inlet end of the circulating pump is communicated with the absorption liquid circulating cooling tank through the inlet pipe, and the water outlet end of the circulating pump is communicated with the tail gas absorption reaction tank through the outlet pipe.
4. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 3, which is characterized in that: the tail gas absorbs the position that is close to the top in the reaction tank and is provided with flow equalizing otter board (202), the play water end of outlet pipe is in the top of flow equalizing otter board, the tail gas delivery pipe extends to the below of flow equalizing otter board.
5. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 4, which is characterized in that: the tail gas absorbs the reaction tank and passes through induced air system and absorption liquid cooling back pond intercommunication, the induced air system includes induced duct (210) and draught fan (209) of setting on the induced duct, the one end of induced duct and the top intercommunication of tail gas absorption reaction tank, the other end extends to under the liquid level of absorption liquid cooling back pond.
6. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 5, which is characterized in that: and an overflow pipe (206) is arranged on one side of the absorption liquid circulating cooling pool.
7. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 6, which is characterized in that: the chlorine ion removal system comprises a chlorine ion removal reaction tank (404), a plate-and-frame filter press (401) and a chlorine removal slag material boat (101) which are sequentially arranged from top to bottom, wherein the chlorine ion removal reaction tank is provided with an injection port (407), a chlorine removal agent feeding port (406) and stirring equipment (405), the bottom of the chlorine ion removal reaction tank is provided with a discharge pipe (403), and the discharge pipe is provided with a discharge valve (402); the feed inlet of the plate-and-frame filter press is in butt joint with the discharge pipe, and the slag outlet of the plate-and-frame filter press is positioned above the dechlorination slag material boat.
8. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 7, which is characterized in that: and an ultrasonic generator (114) is arranged on one side of the chlorine removal slag regeneration furnace.
9. The integrated production line of the chlorine ion removal and chlorine slag regeneration dechlorination agent as claimed in claim 8, which is characterized in that: one end of the agent adding pipe, which is positioned in the dechlorination slag regeneration furnace, is provided with an agent equalizing pipe (103), and a plurality of agent adding nozzles (113) are uniformly arranged on the agent equalizing pipe at intervals.
10. A method for removing chloride ions and regenerating a dechlorination agent from dechlorination slag is characterized by comprising the following steps:
firstly, carrying out dechlorination operation to obtain dechlorination slag
Firstly, injecting a solution to be dechlorinated into a dechlorination reaction tank from an injection port, and adding a dechlorination agent into the dechlorination reaction tank from a dechlorination agent addition port;
and secondly, starting the stirring equipment to perform stirring reaction, opening a discharge valve, putting the reaction material into a plate-and-frame filter press to perform filtration, wherein the filtered solution is the solution with the chloride ion concentration reaching the standard, and the dechlorination slag enters a dechlorination slag material boat.
Second, regenerating the dechlorination agent from the dechlorination slag
Firstly, injecting absorption liquid into a tail gas absorption reaction tank and an absorption liquid circulating cooling tank;
opening a furnace door, pushing the dechlorination slag material boat filled with the dechlorination slag into a dechlorination slag regeneration furnace, closing the furnace door, opening a regenerated catalyst adding valve, and closing the regenerated catalyst adding valve after the dechlorination slag regeneration catalyst flows into the dechlorination slag material boat according to requirements;
starting the circulating pump, the ultrasonic generator and the hot blast stove to heat the dechlorination slag regenerating furnace to the dechlorination slag regenerating temperature and start the regeneration reaction;
fourthly, after the regeneration reaction is finished, the ultrasonic generator, the hot blast stove and the anticorrosion circulating pump are closed; opening a pH regulator adding valve to enable the pH regulator to flow into the chlorine removal slag material boat according to requirements, regulating the pH value to obtain the regenerated chlorine removal agent, then opening a furnace door, pulling the chlorine removal slag material boat filled with the regenerated chlorine removal agent out of the furnace through a crawler belt, reloading the chlorine removal slag material boat into a chlorine removal reaction tank, and repeating the first step and the second step to realize cyclic chlorine removal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210005308.XA CN114314928B (en) | 2022-01-04 | 2022-01-04 | Integrated production line and method for chloride ion removal and chlorine removal slag regeneration chlorine removal agent |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210005308.XA CN114314928B (en) | 2022-01-04 | 2022-01-04 | Integrated production line and method for chloride ion removal and chlorine removal slag regeneration chlorine removal agent |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114314928A true CN114314928A (en) | 2022-04-12 |
| CN114314928B CN114314928B (en) | 2023-09-08 |
Family
ID=81023973
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210005308.XA Active CN114314928B (en) | 2022-01-04 | 2022-01-04 | Integrated production line and method for chloride ion removal and chlorine removal slag regeneration chlorine removal agent |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114314928B (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307909A (en) * | 2022-01-04 | 2022-04-12 | 湖南烯富环保科技有限公司 | Full-automatic regeneration dechlorination agent production line and production method for dechlorination slag |
Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994013588A1 (en) * | 1992-12-14 | 1994-06-23 | Limnologichesky Institut Sibirskogo Otdelenia Rossiiskoi Akademii Nauk | Process for purifying waste water containing chlorlignin |
| US6214607B1 (en) * | 1998-04-03 | 2001-04-10 | The Penn State Research Foundation | Method and apparatus for treating perchlorate-contaminated drinking water |
| CN101658752A (en) * | 2009-07-14 | 2010-03-03 | 东营万通橡胶助剂有限公司 | Recycling device of waste gas generated by producing rubber ingredients |
| CN102839283A (en) * | 2011-06-20 | 2012-12-26 | 吉首大学 | Method for removing chlorine in manganese electrolyte or zinc electrolyte |
| CN103446865A (en) * | 2013-07-03 | 2013-12-18 | 四川大学 | Nitrophosphate tail gas deamination device and nitrophosphate tail gas deamination process |
| CN203470007U (en) * | 2013-09-03 | 2014-03-12 | 广东电网公司电力科学研究院 | Catalyst regeneration equipment of SCR (selective catalytic reduction) denitration system |
| CN103668324A (en) * | 2013-12-06 | 2014-03-26 | 云南祥云飞龙再生科技股份有限公司 | Zinc sulfate electrolysis waste liquid dechlorination process |
| CN107961818A (en) * | 2017-12-06 | 2018-04-27 | 南京威安新材料科技有限公司 | The renovation process and production equipment of flue gas SCR catalyst |
| CN108220998A (en) * | 2018-03-08 | 2018-06-29 | 中南大学 | A kind of method of manganese sulfate electrolyte purification dechlorination |
| CN108273482A (en) * | 2018-02-08 | 2018-07-13 | 天津市长金制线有限公司 | A kind of granular activated carbon regenerating unit and its regeneration method |
| CN209138324U (en) * | 2018-10-12 | 2019-07-23 | 上海翰忠环保有限公司 | A kind of high effective flue gas fair current dust-removal and desulfurizing disappears white device |
| CN111715064A (en) * | 2020-07-02 | 2020-09-29 | 江苏敏禾科技有限公司 | Wet desulphurization efficient dust removal desulfurization tower and application |
| CN112473327A (en) * | 2020-12-30 | 2021-03-12 | 四川省环保科技工程有限责任公司 | Dry tail gas processing system of artificial fiber board |
-
2022
- 2022-01-04 CN CN202210005308.XA patent/CN114314928B/en active Active
Patent Citations (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1994013588A1 (en) * | 1992-12-14 | 1994-06-23 | Limnologichesky Institut Sibirskogo Otdelenia Rossiiskoi Akademii Nauk | Process for purifying waste water containing chlorlignin |
| US6214607B1 (en) * | 1998-04-03 | 2001-04-10 | The Penn State Research Foundation | Method and apparatus for treating perchlorate-contaminated drinking water |
| CN101658752A (en) * | 2009-07-14 | 2010-03-03 | 东营万通橡胶助剂有限公司 | Recycling device of waste gas generated by producing rubber ingredients |
| CN102839283A (en) * | 2011-06-20 | 2012-12-26 | 吉首大学 | Method for removing chlorine in manganese electrolyte or zinc electrolyte |
| CN103446865A (en) * | 2013-07-03 | 2013-12-18 | 四川大学 | Nitrophosphate tail gas deamination device and nitrophosphate tail gas deamination process |
| CN203470007U (en) * | 2013-09-03 | 2014-03-12 | 广东电网公司电力科学研究院 | Catalyst regeneration equipment of SCR (selective catalytic reduction) denitration system |
| CN103668324A (en) * | 2013-12-06 | 2014-03-26 | 云南祥云飞龙再生科技股份有限公司 | Zinc sulfate electrolysis waste liquid dechlorination process |
| CN107961818A (en) * | 2017-12-06 | 2018-04-27 | 南京威安新材料科技有限公司 | The renovation process and production equipment of flue gas SCR catalyst |
| CN108273482A (en) * | 2018-02-08 | 2018-07-13 | 天津市长金制线有限公司 | A kind of granular activated carbon regenerating unit and its regeneration method |
| CN108220998A (en) * | 2018-03-08 | 2018-06-29 | 中南大学 | A kind of method of manganese sulfate electrolyte purification dechlorination |
| CN209138324U (en) * | 2018-10-12 | 2019-07-23 | 上海翰忠环保有限公司 | A kind of high effective flue gas fair current dust-removal and desulfurizing disappears white device |
| CN111715064A (en) * | 2020-07-02 | 2020-09-29 | 江苏敏禾科技有限公司 | Wet desulphurization efficient dust removal desulfurization tower and application |
| CN112473327A (en) * | 2020-12-30 | 2021-03-12 | 四川省环保科技工程有限责任公司 | Dry tail gas processing system of artificial fiber board |
Non-Patent Citations (1)
| Title |
|---|
| 刘伟峰等: "基于硫酸氧铋的硫酸锰溶液深度净化除氯的技术路线", vol. 30, no. 3, pages 648 - 656 * |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114307909A (en) * | 2022-01-04 | 2022-04-12 | 湖南烯富环保科技有限公司 | Full-automatic regeneration dechlorination agent production line and production method for dechlorination slag |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114314928B (en) | 2023-09-08 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN103194768B (en) | High ferro high-phosphorus manganese is utilized to prepare the method for electrolytic metal Mn | |
| CN103710533B (en) | A kind of method of producing electrolytic metal Mn | |
| CN111268771A (en) | Electrochemical method for dechlorinating and removing heavy metals from incineration fly ash water washing liquid | |
| CN210528729U (en) | Stainless steel acid-mixed waste liquid sludge harmless treatment system | |
| CN107475530A (en) | Dechlorination process in zinc hydrometallurgy | |
| WO2022022461A1 (en) | Method and apparatus for regeneration and reuse of alkaline etching waste liquid | |
| CN107201448B (en) | High tellurium copper Slag treatment method | |
| CN114314928B (en) | Integrated production line and method for chloride ion removal and chlorine removal slag regeneration chlorine removal agent | |
| CN107059010A (en) | Cupric alkaline etching liquid circular regeneration equipment for reclaiming and method | |
| CN107140727A (en) | A kind of method that chlorine-contained wastewater purification is discharged in Zinc Hydrometallurgy Process | |
| CN108486379B (en) | The efficient separation method of arsenic and alkali in a kind of arsenic alkaline slag | |
| CN106756010A (en) | The method that fluorine in solution of zinc sulfate is removed after the roasting of zinc metallurgy white residue | |
| CN105483362A (en) | Multi-level countercurrent continuous rinsing and chlorine removing technology and device for zinc oxide smoke | |
| CN210710884U (en) | Device for treating high-concentration cyanide-containing wastewater | |
| CN109112597B (en) | Configuration and method for reforming oxidation line to recover oxidation liquid and protect mono-nickel salt coloring tank | |
| CN101367569B (en) | Ion exchange treatment process for cyanide containing wastewater | |
| CN204039189U (en) | Micro-etched waste liquid and low copper waste water copper recovery system | |
| CN101445952A (en) | Purifying treatment method for waste silver electrolyte | |
| CN1085524A (en) | Rapid method for producing cuprous chloride by using waste acid and waste copper material | |
| CN109336074A (en) | The method of aluminium industry polished and cleaned Sewage treatment compound fertilizer | |
| CN205042351U (en) | Device of zeroth order mercury in degree of depth desorption mercury smelting flue gas | |
| CN211025786U (en) | Alkaline washing device for waste gas treatment in ore curing process | |
| CN110479026B (en) | Method and system for in-situ preparation of hydrogen sulfide for treating arsenic-containing wastewater | |
| CN109137034B (en) | Configuration and method for recovering anodic oxidation liquid by reforming existing oxidation tank | |
| CN114307909A (en) | Full-automatic regeneration dechlorination agent production line and production method for dechlorination slag |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |