CN110395691A - A kind of regenerative system and regeneration method of the spent acid containing tar - Google Patents
A kind of regenerative system and regeneration method of the spent acid containing tar Download PDFInfo
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- CN110395691A CN110395691A CN201910598745.5A CN201910598745A CN110395691A CN 110395691 A CN110395691 A CN 110395691A CN 201910598745 A CN201910598745 A CN 201910598745A CN 110395691 A CN110395691 A CN 110395691A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1406—Multiple stage absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/1456—Removing acid components
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/14—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by absorption
- B01D53/18—Absorbing units; Liquid distributors therefor
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- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B7/00—Halogens; Halogen acids
- C01B7/01—Chlorine; Hydrogen chloride
- C01B7/07—Purification ; Separation
- C01B7/0706—Purification ; Separation of hydrogen chloride
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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
- C02F1/048—Purification of waste water by 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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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2257/00—Components to be removed
- B01D2257/20—Halogens or halogen compounds
- B01D2257/204—Inorganic halogen compounds
- B01D2257/2045—Hydrochloric acid
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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
- C02F2101/00—Nature of the contaminant
- C02F2101/10—Inorganic compounds
- C02F2101/12—Halogens or halogen-containing compounds
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- Environmental & Geological Engineering (AREA)
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Abstract
The present invention relates to the regenerative systems and regeneration method of a kind of spent acid containing tar, the processing system includes vapo(u)rization system, concentration systems, parsing and absorption system, and the vapo(u)rization system includes evaporation feed preheater, thin film evaporator, residue surge tank, demister, evaporative condenser water pot and Analytic Tower preheater；The concentration systems include concentration tower, concentration reboiler, concentration condensate water pot, concentration tower top first-stage condenser, concentration tower top secondary condenser, vacuum buffer tank and water flow jet pump vacuum pump set；The parsing and absorption system include Analytic Tower, parsing tower reboiler, parsing condensate water pot, parsing overhead condenser, stage falling-film absorber, second level falling-film absorber, tail gas absorber, concentration acid cooler and hydrochloric acid tank.The present invention has the advantages that the regenerative system of present invention spent acid containing tar, can reduce cost of sewage disposal and improves the utilization of resources.
Description
Technical field
The present invention relates to waste acid treatment field, in particular to the regenerative system and regeneration method of a kind of spent acid containing tar.
Background technique
In Chemical Manufacture, it is frequently accompanied by the generation of waste hydrochloric acid, impurity, such as tar are contained in spent acid, can not directly be returned
It receives and utilizes, be typically directly discharged into cesspool and handled, cause to improve cost of sewage disposal while the waste of resource.
Therefore, a kind of regenerative system of spent acid containing tar that can reduce cost of sewage disposal and improve the utilization of resources is researched and developed
And regeneration method is necessary.
Summary of the invention
It can reduce cost of sewage disposal the technical problem to be solved in the present invention is to provide a kind of and improve the utilization of resources
The regenerative system and regeneration method of the spent acid containing tar.
In order to solve the above technical problems, the technical solution of the present invention is as follows: a kind of regenerative system of spent acid containing tar, feature
Be: the regenerative system includes vapo(u)rization system, concentration systems, parsing and absorption system, the vapo(u)rization system include evaporate into
Expect preheater, thin film evaporator, residue surge tank, demister, evaporative condenser water pot and Analytic Tower preheater,
The bottom center of the evaporation feed preheater is equipped with the feed inlet A being connected to evaporation feed preheater, and evaporation charging is pre-
The top center of hot device is equipped with the discharging port A being connected to evaporation feed preheater, and the side of the evaporation feed preheater is certainly
The condensed water outlet conduit A and condensed water water inlet line A being connected to evaporation feed preheater are disposed under above；
The lateral wall of the thin film evaporator has collet, and the top two sides of thin film evaporator are respectively equipped with to be connected with thin film evaporator
Logical feed inlet B1 and discharge port B1, the upper end side of thin film evaporator is equipped with the feed inlet B2 being connected to thin film evaporator, thin
The bottom center of film evaporator is equipped with the discharge port B2 being connected to thin film evaporator, and the collet is disposed with from top to bottom
The saturated vapor admission line A and condensed water outlet conduit B being connected to collet, the other end of the condensed water outlet conduit B is also
Setting is connected to evaporative condenser water pot；
The top center of the residue surge tank is equipped with the feed inlet C that is connected to residue surge tank, in the bottom end of residue surge tank
The heart is equipped with the discharge port C being connected to residue surge tank；
The bottom center of the demister is equipped with the feed inlet D being connected to demister, and the top center of demister is equipped with and foam removal
Hydrogen chloride/water mixed gas discharge pipe A of device connection, the bottom portion side end of demister are equipped with the discharge port D being connected to demister；
The top center of the evaporative condenser water pot is equipped with the saturated vapor admission line B being connected to evaporative condenser water pot, and institute
The other end for stating saturated vapor admission line B is connected to setting with saturated vapor admission line A；The side of the evaporative condenser water pot
It is disposed with the condensed water water inlet line C being connected to evaporative condenser water pot and condensed water outlet conduit C from top to bottom；
The top center of the Analytic Tower preheater is equipped with the concentrating hydrochloric acid discharge pipe A being connected to Analytic Tower preheater, parsing
The bottom center of tower preheater is equipped with the concentrating hydrochloric acid feed pipe A being connected to Analytic Tower preheater；The Analytic Tower preheater
The upper end of side is connected to by connecting tube A with condensed water outlet conduit C, and the lower end of the Analytic Tower preheater other side passes through connecting tube
B is connected to condensed water outlet conduit C；
The discharging port A is connected to feed inlet B1 by pipeline A, and the discharge port B2 is connected to feed inlet C by pipeline B, institute
It states discharge port B1 and is connected to feed inlet D by pipeline C, the discharge port D is connected to feed inlet B2 by pipeline D；
The concentration systems include concentration tower, concentration reboiler, concentration condensate water pot, concentration tower top first-stage condenser, concentration tower
It pushes up secondary condenser, vacuum buffer tank and water flow jet and pumps vacuum pump set,
The top center of the concentration tower is equipped with the sour gas outlet A being connected to concentration tower, and the bottom center of concentration tower is equipped with
The concentrating hydrochloric acid discharge pipe B being connected to concentration tower, and the concentrating hydrochloric acid discharge pipe B and concentrating hydrochloric acid feed pipe A connects
Logical setting；Concentrating hydrochloric acid discharge pipe E is provided with and communicated on concentrating hydrochloric acid discharge pipe B, and on concentrating hydrochloric acid discharge pipe B
Also it has been arranged in series concentration tower discharging pump；One side of the concentration tower is successively arranged the dilute salt being connected to concentration tower from top to bottom
Sour feed pipe A, hydrogen chloride/water mixed gas feed pipe A and sour gas discharge pipe A, and hydrogen chloride/water mixed gas
Feed pipe A is connected to setting, the hydrogen chloride/water mixed gas feed pipe A with hydrogen chloride/water mixed gas discharge pipe A
On be also provided with and communicated with hydrogen chloride tail gas feed pipe, the top of another side of the concentration tower is equipped with the acid being connected to concentration tower
Property waste water discharge nozzle A；
The top of the concentration tower reboiler is connected to setting with sour gas discharge pipe A by connecting tube C, and tower reboiler is concentrated
Bottom end setting with concentrating hydrochloric acid discharge pipe B is connected to by connecting tube D；One side of the concentration tower reboiler is from top to bottom
It is disposed with saturated vapor admission line C, condensed water water outlet A 1 and the condensed water water outlet A 2 being connected to concentration reboiler；
The top center of the concentration condensate water pot is equipped with the condensed water water inlet A 1 being connected to concentration condensate water pot, concentration condensation
One side of water pot is disposed with the sour gas discharge pipe B being connected to concentration condensate water pot from top to bottom and condensed water goes out
Waterpipe A, and the condensed water outlet conduit A is connected to setting with condensed water water inlet line A；The other side of condensate water pot is concentrated
End top is equipped with the condensed water water inlet A 2 being connected to concentration condensate water pot；
The condensed water water outlet A 1 is connected to by connecting tube E with condensed water water inlet A 1, and condensed water water outlet A 2 passes through connection
Pipe F is connected to condensed water water inlet A 2；
The top center of the concentration tower top first-stage condenser be equipped with the sour gas that is connected to of concentration tower top first-stage condenser into
Mouth A, the bottom center of concentration tower top first-stage condenser are equipped with the acid waste water discharge nozzle being connected to concentration tower top first-stage condenser
B, and the other end of the acid waste water discharge nozzle B is connected to acid waste water discharge nozzle A, on the acid waste water discharge nozzle B also
It has been arranged in series vacuum condensation waste water pump；The side of the concentration tower top first-stage condenser is disposed with recirculated water from top to bottom
Outlet conduit A and circulating water inlet road A, another side lower part of the concentration tower top first-stage condenser are equipped with and concentration tower top
The sour gas of first-stage condenser connection exports A；
The top center of the concentration tower top secondary condenser be equipped with the sour gas that is connected to of concentration tower top secondary condenser into
Mouth B, and the sour gas import B exports A with sour gas by connecting tube G and is connected to；The bottom of tower top secondary condenser is concentrated
End center is equipped with the acid waste water discharge nozzle C being connected to concentration tower top secondary condenser, and the acid waste water discharge nozzle C's is another
One end is connected to acid waste water discharge nozzle B；The side of the concentration tower top secondary condenser is disposed with circulation from top to bottom
Another side lower part of water outlet conduit B and circulating water inlet road B, the concentration tower top secondary condenser are equipped with and concentration tower
Push up the vacuum lead A of secondary condenser connection；
The top center of the vacuum buffer tank is equipped with the vacuum lead B that setting is connected to vacuum buffer tank, and vacuum-pumping tube
The other end of road B is connected to setting with connecting tube G；The tip-end-side of the vacuum buffer tank is equipped with to be connected to vacuum buffer tank and set
The acid waste water discharge nozzle D set, and the other end of the acid waste water discharge nozzle D is connected to setting with acid waste water discharge nozzle A；Institute
The lower end two sides for stating vacuum buffer tank pass through connecting tube H and connecting tube I and acid waste water discharge nozzle B respectively and acid waste water discharges
Pipe C connection, and acid waste water discharge nozzle E is also provided with and communicated on the acid waste water discharge nozzle A；
The water flow jet pump vacuum pump set is connected to setting with vacuum lead A, also connects on the water flow jet pump vacuum pump set
It is logical to be provided with exhausting pipeline A, and exhausting pipeline B is also provided with and communicated between vacuum lead A and exhausting pipeline A；The water flow
Industry water water inlet line is also provided with and communicated on jet pump vacuum pump set, the water flow jet pumps vacuum pump set from top to bottom successively
It is provided with circulating water outlet pipe road C and circulating water inlet road C；
The parsing and absorption system include Analytic Tower, parsing tower reboiler, parsing condensate water pot, parsing overhead condenser, one
Grade falling-film absorber, second level falling-film absorber, tail gas absorber, concentration acid cooler and hydrochloric acid tank,
The top center of the Analytic Tower is equipped with the hydrogen chloride gas outlet A that setting is connected to Analytic Tower, a side of Analytic Tower
Top is connected to setting with the concentrating hydrochloric acid discharge pipe A on Analytic Tower preheater, and a side lower part of Analytic Tower is equipped with and parsing
Tower and hydrogen chloride/water mixed gas discharge pipe B of parsing tower reboiler top connection setting；The bottom center of the Analytic Tower
Equipped with the dilute hydrochloric acid feed pipe B for being connected to setting with Analytic Tower and parsing tower reboiler bottom end；The another side of the one of the Analytic Tower
Lower part is connected to setting with the dilute hydrochloric acid feed pipe A on concentration tower, has also been arranged in series liquid level on the dilute hydrochloric acid feed pipe A
Flow control valve, and liquid level flow control valve is arranged close to concentration tower；
It is described parsing reboiler a side be disposed with from top to bottom with parsing reboiler be connected to be arranged saturated vapor into
Feed channel D, condensed water water outlet B 1 and condensed water water outlet B 2；
The top center of the parsing condensate water pot is equipped with the condensed water water inlet B 1 that setting is connected to parsing condensate water pot, parsing
The side top of condensate water pot is equipped with the condensed water water inlet B 2 that setting is connected to parsing condensate water pot, parses the another of condensate water pot
One side lower part is connected to setting with the condensed water water inlet line C on evaporative condenser water pot；The condensed water water outlet B 1 passes through company
Adapter tube H is connected to setting with condensed water water inlet B 1, and the condensed water water outlet B 2 is connected by connecting tube I and condensed water water inlet B 2
Logical setting；
The top center of the parsing overhead condenser is equipped with the hydrogen chloride gas import that setting is connected to parsing overhead condenser
A, the bottom center for parsing overhead condenser are equipped with the concentrating hydrochloric acid discharge pipe C that setting is connected to parsing overhead condenser, solution
One side lower part of analysis overhead condenser is equipped with the hydrogen chloride gas being connected to parsing overhead condenser and exports B, and parsing tower top is cold
Another side of condenser is disposed with the circulating water outlet pipe road D and circulation of parsing overhead condenser connection setting from top to bottom
Water water inlet line D, and hydrogen chloride gas outlet A is connected to hydrogen chloride gas import A by hydrogen chloride gas pipeline A and is set
It sets；
One side of the stage falling-film absorber is disposed with the hydrogen chloride gas of stage falling-film absorber connection from top to bottom
Body import B, circulating water outlet pipe road E and circulating water inlet road E, and hydrogen chloride gas outlet B passes through hydrogen chloride gas
Pipeline B is connected to setting with hydrogen chloride gas import B；Another side of the stage falling-film absorber is disposed with from top to bottom
The concentrating hydrochloric acid feed pipe D and hydrogen chloride gas of stage falling-film absorber connection export C；The bottom of the stage falling-film absorber
End center is equipped with the concentrating hydrochloric acid discharge pipe D that setting is connected to stage falling-film absorber, and the concentrating hydrochloric acid discharge pipe D
The other end be connected to setting with concentrating hydrochloric acid discharge pipe C；
One side of the second level falling-film absorber is disposed with the hydrogen chloride gas of second level falling-film absorber connection from top to bottom
Body import C, circulating water outlet pipe road F and circulating water inlet road F, and hydrogen chloride gas outlet C passes through hydrogen chloride gas
Pipeline C is connected to setting with hydrogen chloride gas import C；Another side of the second level falling-film absorber is disposed with from top to bottom
The concentrating hydrochloric acid feed pipe C and hydrogen chloride gas of second level falling-film absorber connection export D；The bottom of the second level falling-film absorber
End center is connected to setting with the concentrating hydrochloric acid feed pipe D on stage falling-film absorber；
One side lower part of the tail gas absorber is provided with the hydrogen chloride gas import D that setting is connected to tail gas absorber, and
The hydrogen chloride gas outlet D is connected to setting with hydrogen chloride gas import D by hydrogen chloride gas pipeline D；The tail gas absorption
Another side top of tower is provided with the concentrating hydrochloric acid feed pipe B being connected to tail gas absorber, the top of the tail gas absorber
End center is connected to setting, the hydrogen chloride tail gas with the hydrogen chloride tail gas feed pipe on hydrogen chloride/water mixed gas feed pipe A
Pressure flow hybrid control valve is also arranged in series on feed pipe, and pressure flow hybrid control valve is arranged close to concentration tower；The tail gas is inhaled
The bottom center for receiving tower is connected to setting with the concentrating hydrochloric acid feed pipe C on second level falling-film absorber；
The top center of the concentration acid cooler is connected to setting with the concentrating hydrochloric acid feed pipe B on tail gas absorber, is concentrated
The bottom center of acid cooler is connected to setting with the concentrating hydrochloric acid discharge pipe E on concentrating hydrochloric acid discharge pipe B；The gelled acid
One side of cooler is disposed with the circulating water outlet pipe road G and circulation that setting is connected to concentration acid cooler from top to bottom
Water water inlet line G；
The upper end of the hydrochloric acid tank is connected to setting, the hydrochloric acid tank with the concentrating hydrochloric acid discharge pipe C on parsing overhead condenser
Upper end and hydrogen chloride gas pipeline C between be also provided with and communicated with hydrogen chloride gas pipeline E；One side lower part of the hydrochloric acid tank
Hydrochloric acid has also been arranged in series equipped with the concentrating hydrochloric acid discharge pipe F being connected to hydrochloric acid tank, and on the concentrating hydrochloric acid discharge pipe F
Discharging pump.
The thin film evaporator has three, is arranged in parallel on pipeline A.
The residue surge tank has two, is arranged in parallel on pipeline B.
There are two the concentration tower discharging pumps, is arranged in parallel on concentrating hydrochloric acid discharge pipe B.
There are two the vacuum condensation waste water pumps, be arranged in parallel acid waste water discharge nozzle A and acid waste water discharge nozzle B it
Between.
There are three the water flow jet pump vacuum pump sets, is arranged in parallel on vacuum lead A.
There are two the hydrochloric acid discharging pumps, is arranged in parallel on stating concentrating hydrochloric acid discharge pipe F.
The regeneration method includes the following steps:
Spent acid containing tar is passed through in evaporation feed preheater and is situated between with high temperature by the preheating for a) carrying out the spent acid containing tar first
Mass heat transfer carries out being heated to 75-85 DEG C of temperature, the spent acid containing tar after preheating is passed through thin film evaporator, to give up
The hydrogen chloride gas of high-purity is evaporated by acid by steam；
B) after the spent acid containing tar is evaporated by thin film evaporator, hydrogen chloride/water mixed gas and tar residue are generated, and will
Tar residue send to residue and buffers, to subsequent processing；
C) b) middle hydrogen chloride/water mixed gas generated is passed through progress foam removal processing in demister, after then handling foam removal
Hydrogen chloride/water mixed gas concentration tower is passed through with 2/3 flow of the flow of spent acid containing tar, and dilute salt is passed through into concentration tower
The volume ratio relationship of acid, the dilute hydrochloric acid being passed through and mixed gas is 2:1, carries out hydrogen chloride/water mixed gas and dilute hydrochloric acid
Concentration reaction, the tower pressure interior force of concentration tower are -0.096Mpa；
D) after the reaction was completed, concentration tower tower bottom generates the hydrochloric acid and heavy constituent gas that mass percentage concentration is 23% for concentration, then will
The hydrochloric acid that mass percentage concentration is 23% is by the conveying storage of concentration tower discharging pump, to spare；Heavy constituent gas is with spent acid containing tar
1/3 flow of flow is passed through in concentration tower reboiler, is concentrated and is boiled again, is obtained the hydrochloric acid that mass percentage concentration is 23% and is led to
Cross the conveying storage of concentration tower discharging pump；The steam pressure 0.4Mpa of tower reboiler is concentrated, temperature is controlled at 120 DEG C；
E) after the reaction was completed, concentration column overhead generates acid waste water and light-component gas, then successively by light-component gas for concentration
Condensation process is carried out by concentration tower top first-stage condenser and concentration tower top secondary condenser, and combines vacuumize process, at this
During reason, the acid waste water of generation generates centralized collection together with acid waste water with concentration column overhead, to subsequent processing；
F) hydrochloric acid that mass percentage concentration obtained in d) is 23% Analytic Tower is delivered to by concentration tower discharging pump to heat
To 115 ~ 120 DEG C, dilute hydrochloric acid, hydrogen chloride gas and hydrogen chloride/water mixed gas, the hydrochloric acid that mass percentage concentration is 23% are generated
In hydrogen chloride/water mixed gas by parsing tower bottom parsing reboiler evaporate be precipitated, into parsing condensate water pot in into
Row condensation, condensed hydrogen chloride gas are passed into iterative cycles in Analytic Tower again and parse；
G) f) the middle dilute hydrochloric acid generated is passed through concentration tower and carries out concentration reaction again, and the hydrogen chloride gas of generation is passed through parsing tower top
For condenser through condensing, the hydrochloric acid that the mass percentage concentration of generation is 30% is passed through hydrochloric acid tank storage, the chlorination generated in condensation process
Hydrogen is then successively passed through stage falling-film absorber and second level falling-film absorber；
H) hydrochloric acid in concentrating hydrochloric acid discharge nozzle E is successively passed through to concentration acid cooler, tail gas absorber, second level falling-film absorber
With stage falling-film absorber, absorbing reaction is carried out with hydrogen chloride gas, the quality percentage finally generated in stage falling-film absorber
The hydrochloric acid that concentration is 30% is passed through hydrochloric acid tank storage, and the hydrogen chloride tail gas generated in tail gas absorber, which can be passed through in concentration tower, joins
It is reacted with concentration.
The present invention has the advantages that
(1) regenerative system of the spent acid containing tar of the invention, the spent acid containing tar send to vapo(u)rization system through pervaporation obtain hydrogen chloride/
Water mixed gas and tar residue, tar residue carry out entrucking centralized processing；Obtained hydrogen chloride/water mixed gas is evaporated to send again
To concentration systems, and concentration is carried out with additional dilute hydrochloric acid and is reacted, be concentrated to get concentrated hydrochloric acid A；Last concentrated hydrochloric acid A send to parsing and inhales
Receipts system is absorbed by parsing, obtains the denseer concentrated hydrochloric acid B of concentration, hydrogen chloride obtained in evaporation process/water can be mixed
Hydrogen chloride/water mixed gas obtained in gas and resolving is sufficiently recycled, obtain effective concentrated hydrochloric acid at
Product, and then spent acid containing tar can be made to be regenerated, improve the utilization of resources；Meanwhile in treatment process, the production of sewage is decreased
It is raw, it is thus possible to reduce cost of sewage disposal；
(2) regenerative system of the spent acid containing tar of the invention, wherein thin film evaporator, residue surge tank, concentration tower discharging pump, true
Air-cooled solidifying waste water pump and hydrochloric acid discharging pump be it is multiple be arranged in parallel, and then the regeneration of the entirely spent acid containing tar can be greatly improved
The treatment effeciency of system.
Detailed description of the invention
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural schematic diagram of vapo(u)rization system in the regenerative system of the spent acid of the invention containing tar.
Fig. 2 is the structural schematic diagram of concentration systems in the regenerative system of the spent acid of the invention containing tar.
Fig. 3 is the structural schematic diagram of parsing and absorption system in the regenerative system of the spent acid of the invention containing tar.
Specific embodiment
The following examples can make professional and technical personnel that the present invention be more fully understood, but therefore not send out this
It is bright to be limited among the embodiment described range.
Embodiment
The regenerative system of the present embodiment spent acid containing tar, the regenerative system include vapo(u)rization system, concentration systems, parsing and
Absorption system.
Vapo(u)rization system, as shown in Figure 1, including evaporation feed preheater 1, thin film evaporator 2, residue surge tank 3, demister 4, steaming
Send out condensate water pot 5 and Analytic Tower preheater 6；The bottom center for evaporating feed preheater 1 is equipped with to be connected with evaporation feed preheater 1
Logical feed inlet 101A, the top center of evaporation feed preheater 1 are equipped with the discharge port being connected to evaporation feed preheater 1
102A, and the side for evaporating feed preheater 1 is disposed with the condensed water for being connected to 1 with evaporation feed preheater from top to bottom and goes out
Waterpipe A and condensed water water inlet line A(is from concentration condensate water pot).
The lateral wall of thin film evaporator 2 has collet 201, and the top two sides of thin film evaporator 2 are respectively equipped with steams with film
Feed inlet 202B1 and discharge port 203B1 that device 2 is connected to are sent out, the upper end side of thin film evaporator 2 is equipped with to be connected with thin film evaporator 2
Logical feed inlet 202B2, the bottom center of thin film evaporator 2 is equipped with the discharge port 203B2 being connected to thin film evaporator 2, and presss from both sides
Set 201 is disposed with the saturated vapor admission line A being connected to collet 201 and condensed water outlet conduit B from top to bottom, condenses
The other end of water outlet conduit B is also connected to setting with evaporative condenser water pot 5.
The top center of residue surge tank 3 is equipped with the feed inlet 301C being connected to residue surge tank 3, residue surge tank 3
Bottom center is equipped with the discharge port 302C being connected to residue surge tank 3.
The bottom center of demister 4 is equipped with the feed inlet 401D being connected to demister 4, and the top center of demister 4 is equipped with
The hydrogen chloride being connected to demister 4/water mixed gas discharge pipe A, the bottom portion side end of demister 4 is equipped with to be connected to demister 4
Discharge port 402D.
The top center of evaporative condenser water pot 5 is equipped with the saturated vapor admission line B being connected to evaporative condenser water pot 5, and
The other end of saturated vapor admission line B is connected to setting with saturated vapor admission line A；The side of evaporative condenser water pot 5 is from upper
Be disposed with the condensed water water inlet line C(being connected to evaporative condenser water pot under and and carry out self-analytic data condensate water pot) and condensed water go out
Waterpipe C.
The top center of Analytic Tower preheater 6 is equipped with the concentrating hydrochloric acid discharge pipe A(being connected to Analytic Tower preheater 6 and goes
Analytic Tower), the bottom center of Analytic Tower preheater 6 is equipped with the concentrating hydrochloric acid feed pipe A(being connected to Analytic Tower preheater 6 and comes
From concentration tower discharging pump)；The upper end of 6 side of Analytic Tower preheater is connected to by connecting tube A with condensed water outlet conduit C, is parsed
The lower end of 6 other side of tower preheater is connected to by connecting tube B with condensed water outlet conduit C；Discharge port 102A and feed inlet 202B1
It is connected to by pipeline A, discharge port 203B2 is connected to feed inlet 301C by pipeline B, and discharge port 203B1 and feed inlet 401D are logical
Piping C connection, discharge port 402D are connected to feed inlet 202B2 by pipeline D.
As embodiment, specific embodiment is that thin film evaporator 2 has three, is arranged in parallel on pipeline A；Residue is slow
Rushing tank 3 has two, is arranged in parallel on pipeline B.
Concentration systems, as shown in Fig. 2, including concentration tower 7, concentration reboiler 8, concentration condensate water pot 9, concentration tower top level-one
Condenser 10, concentration tower top secondary condenser 11, vacuum buffer tank 12 and water flow jet pump vacuum pump set 13.
The top center of concentration tower 7 is equipped with the sour gas that be connected to concentration tower 7 and exports 701A, in the bottom end of concentration tower 7
The heart is equipped with the concentrating hydrochloric acid discharge pipe B being connected to concentration tower 7, and concentrating hydrochloric acid discharge pipe B and concentrating hydrochloric acid feed pipe A
Connection setting；It is provided with and communicated with concentrating hydrochloric acid discharge pipe E(on concentrating hydrochloric acid discharge pipe B and removes concentration acid cooler), and
Concentration tower discharging pump 702 has also been arranged in series on concentrating hydrochloric acid discharge pipe B；In embodiment, when it is implemented, concentration tower discharges
There are two pumps 702, is arranged in parallel on concentrating hydrochloric acid discharge pipe B；One side of concentration tower 7 be successively arranged from top to bottom with it is dense
The dilute hydrochloric acid feed pipe A(or come from Analytic Tower that contracting tower 7 is connected to), hydrogen chloride/water mixed gas feed pipe A and sour gas
Discharge pipe A, and hydrogen chloride/water mixed gas feed pipe A is connected to setting, institute with hydrogen chloride/water mixed gas discharge pipe A
It states and is also provided with and communicated on hydrogen chloride/water mixed gas feed pipe A hydrogen chloride tail gas feed pipe (from tail gas absorber), it is dense
The top of another side of contracting tower 7 is equipped with the acid waste water discharge nozzle A being connected to concentration tower 7.
The top of concentration tower reboiler 8 is connected to setting with sour gas discharge pipe A by connecting tube C, and concentration tower boils again
The bottom end of device 8 is connected to setting with concentrating hydrochloric acid discharge pipe B by connecting tube D；A side of tower reboiler 8 is concentrated from top to bottom
It is disposed with the saturated vapor admission line C, the condensed water water outlet 801A1 that are connected to concentration reboiler 8 and condensed water is discharged
Mouth 801A2.
The top center of concentration condensate water pot 9 is equipped with the condensed water water inlet 901A1 being connected to concentration condensate water pot 9, dense
One side of contracting condensate water pot 9 be disposed with from top to bottom with the sour gas discharge pipe B that is connected to of concentration condensate water pot 9 and
Condensed water outlet conduit A, and condensed water outlet conduit A is connected to setting with condensed water water inlet line A；The another of condensate water pot 9 is concentrated
One side top is equipped with the condensed water water inlet 901A2 being connected to concentration condensate water pot 9.
Condensed water water outlet 801A1 is connected to by connecting tube E with condensed water water inlet 901A1, condensed water water outlet 801A2
It is connected to by connecting tube F with condensed water water inlet 901A2.
The top center of concentration tower top first-stage condenser 10 is equipped with the sour gas being connected to concentration tower top first-stage condenser 10
Body import 1001A, the bottom center of concentration tower top first-stage condenser 10 are equipped with the acid being connected to concentration tower top first-stage condenser 10
Property waste water discharge nozzle B, and the other end of acid waste water discharge nozzle B is connected to acid waste water discharge nozzle A, acid waste water discharge nozzle B
On be also arranged in series vacuum condensation waste water pump 1002, there are two vacuum condensation waste water pumps 1002, is arranged in parallel in acid waste water
Between discharge nozzle A and acid waste water discharge nozzle B；The side of concentration tower top first-stage condenser 10 is disposed with circulation from top to bottom
Water outlet conduit A and circulating water inlet road A, another side lower part of concentration tower top first-stage condenser 10 are equipped with and concentration tower top
The sour gas that first-stage condenser 10 is connected to exports 1003A.
The top center of concentration tower top secondary condenser 11 is equipped with the sour gas being connected to concentration tower top secondary condenser 11
Body import 1101B, and sour gas import 1101B exports 1003A with sour gas by connecting tube G and is connected to；Tower top two is concentrated
The bottom center of grade condenser 11 is equipped with the acid waste water discharge nozzle C being connected to concentration tower top secondary condenser 11, and spent acidic
The other end of water discharge nozzle C is connected to acid waste water discharge nozzle B；The side of tower top secondary condenser 11 is concentrated from top to bottom successively
It is provided with circulating water outlet pipe road B and circulating water inlet road B, another side lower part of concentration tower top secondary condenser 11 is equipped with
The vacuum lead A being connected to concentration tower top secondary condenser 11.
The top center of vacuum buffer tank 12 is equipped with the vacuum lead B that setting is connected to vacuum buffer tank 12, and takes out true
The other end of vacant duct B is connected to setting with connecting tube G；The tip-end-side of vacuum buffer tank 12 is equipped with to be connected with vacuum buffer tank 12
The acid waste water discharge nozzle D of logical setting, and the other end of acid waste water discharge nozzle D is connected to setting with acid waste water discharge nozzle A；Very
The lower end two sides of empty buffer tank 12 pass through connecting tube H and connecting tube I and acid waste water discharge nozzle B and acid waste water discharge nozzle respectively
C connection, and be also provided with and communicated with acid waste water discharge nozzle E(on acid waste water discharge nozzle A and remove concentration acid cooler).
Water flow jet pump vacuum pump set 13 is connected to setting with vacuum lead A, and water flow jet pumps there are three vacuum pump sets 13,
It is arranged in parallel on vacuum lead A；Exhausting pipeline A(is also provided with and communicated with from residue on water flow jet pump vacuum pump set 13
Surge tank), and exhausting pipeline B is also provided with and communicated between vacuum lead A and exhausting pipeline A；Water flow jet pumps vacuum pump set
Industry water water inlet line is also provided with and communicated on 13, water flow jet pump vacuum pump set 13 is disposed with recirculated water from top to bottom and goes out
Waterpipe C and circulating water inlet road C.
Parsing and absorption system, as shown in figure 3, include Analytic Tower 14, parsing tower reboiler 15, parsing condensate water pot 16,
Parse overhead condenser 17, stage falling-film absorber 18, second level falling-film absorber 19, tail gas absorber 20, concentration acid cooler
21 and hydrochloric acid tank 22.
The top center of Analytic Tower 14 is equipped with the hydrogen chloride gas outlet 1401A that setting is connected to Analytic Tower 14, Analytic Tower
A 14 side top is connected to setting with the concentrating hydrochloric acid discharge pipe A on Analytic Tower preheater 6, under a side of Analytic Tower 14
Portion is equipped with hydrogen chloride/water mixed gas discharge pipe B that setting is connected to Analytic Tower 14 and parsing 15 top of tower reboiler；Parsing
The bottom center of tower 14 is equipped with the dilute hydrochloric acid feed pipe B that setting is connected to Analytic Tower 14 and parsing 15 bottom end of tower reboiler；Solution
One another side lower part of analysis tower 14 is connected to setting with the dilute hydrochloric acid feed pipe A on concentration tower 7, goes back on dilute hydrochloric acid feed pipe A
It is arranged in series liquid level flow control valve 1402, and liquid level flow control valve 1402 is arranged close to concentration tower 7.
One side of parsing reboiler 15 is disposed with the saturation for being connected to setting with parsing reboiler 15 from top to bottom and steams
Vapour admission line D, condensed water water outlet 1501B1 and condensed water water outlet 1501B2.
The top center of parsing condensate water pot 16 is equipped with the condensed water water inlet that setting is connected to parsing condensate water pot 16
1601B1, the side top of parsing condensate water pot 16 are equipped with the condensed water water inlet that setting is connected to parsing condensate water pot 16
1601B2, another side lower part of parsing condensate water pot 16 is connected to the condensed water water inlet line C on evaporative condenser water pot 5 to be set
It sets；Condensed water water outlet 1501B1 is connected to setting, condensed water water outlet with condensed water water inlet 1601B1 by connecting tube J
1501B2 is connected to setting with condensed water water inlet 1601B2 by connecting tube K.
The top center of parsing overhead condenser 17 is equipped with the hydrogen chloride gas that setting is connected to parsing overhead condenser 17
Import 1701A, the bottom center of parsing overhead condenser 17 are equipped with the concentrating hydrochloric acid that setting is connected to parsing overhead condenser 17
Discharge pipe C, a side lower part of parsing overhead condenser 17 are equipped with the hydrogen chloride gas being connected to parsing overhead condenser 17
1702B is exported, another side of parsing overhead condenser 17 is disposed with the parsing connection of overhead condenser 17 from top to bottom and sets
The circulating water outlet pipe road D and circulating water inlet road D set, and hydrogen chloride gas outlet 1401A passes through hydrogen chloride gas pipeline A
Setting is connected to hydrogen chloride gas import 1701A.
One side of stage falling-film absorber 18 is disposed with the chlorination of the connection of stage falling-film absorber 18 from top to bottom
Hydrogen import 1801B, circulating water outlet pipe road E and circulating water inlet road E, and hydrogen chloride gas outlet 1702B passes through chlorine
Change hydrogen pipeline B and is connected to setting with hydrogen chloride gas import 1801B；Another side of stage falling-film absorber 18 is from top to bottom
It is disposed with the concentrating hydrochloric acid feed pipe D and hydrogen chloride gas outlet 1802C of the connection of stage falling-film absorber 18；Level-one drop
The bottom center of film absorber 18 is equipped with the concentrating hydrochloric acid discharge pipe D that setting is connected to stage falling-film absorber 18, and is concentrated
The other end of hydrochloric acid discharge pipe D is connected to setting with concentrating hydrochloric acid discharge pipe C.
One side of second level falling-film absorber 19 is disposed with the chlorination of the connection of second level falling-film absorber 19 from top to bottom
Hydrogen import 1901C, circulating water outlet pipe road F and circulating water inlet road F, and hydrogen chloride gas outlet 1802C passes through chlorine
Change hydrogen pipeline C and is connected to setting with hydrogen chloride gas import 1901C；Another side of second level falling-film absorber 19 is from top to bottom
It is disposed with the concentrating hydrochloric acid feed pipe C and hydrogen chloride gas outlet 1902D of the connection of second level falling-film absorber 19；Second level drop
The bottom center of film absorber 19 is connected to setting with the concentrating hydrochloric acid feed pipe D on stage falling-film absorber 18.
One side lower part of tail gas absorber 20 is provided with the hydrogen chloride gas import that setting is connected to tail gas absorber 20
2001D, and hydrogen chloride gas outlet 1902D is connected to setting with hydrogen chloride gas import 2001D by hydrogen chloride gas pipeline D；
Another side top of tail gas absorber 20 is provided with the concentrating hydrochloric acid feed pipe B being connected to tail gas absorber 20, and tail gas is inhaled
The top center for receiving tower 20 is connected to setting, chlorination with the hydrogen chloride tail gas feed pipe on hydrogen chloride/water mixed gas feed pipe A
Pressure flow hybrid control valve 2002 is also arranged in series on hydrogen tail gas feed pipe, and pressure flow hybrid control valve 2002 is set close to concentration tower
It sets；The bottom center of tail gas absorber 20 is connected to setting with the concentrating hydrochloric acid feed pipe C on second level falling-film absorber 19.
The top center of concentration acid cooler 21 is connected to setting with the concentrating hydrochloric acid feed pipe B on tail gas absorber 20,
The bottom center of concentration acid cooler 21 is connected to setting with the concentrating hydrochloric acid discharge pipe E on concentrating hydrochloric acid discharge pipe B；Concentration
One side of acid cooler 21 is disposed with the circulating water outlet pipe road G that setting is connected to concentration acid cooler 21 from top to bottom
With circulating water inlet road G.
The upper end of hydrochloric acid tank 22 is connected to setting, hydrochloric acid tank with the concentrating hydrochloric acid discharge pipe C on parsing overhead condenser 17
Hydrogen chloride gas pipeline E is also provided with and communicated between 22 upper end and hydrogen chloride gas pipeline C；One side lower part of hydrochloric acid tank 22
Equipped with the concentrating hydrochloric acid discharge pipe F being connected to hydrochloric acid tank 22, and hydrochloric acid has also been arranged in series on concentrating hydrochloric acid discharge pipe F and has been gone out
Material pump 2201, there are two hydrochloric acid discharging pumps 2201, is arranged in parallel on stating concentrating hydrochloric acid discharge pipe F.
The present embodiment uses the regeneration method of the regenerative system of the spent acid containing tar, and regeneration method includes the following steps:
Spent acid containing tar is passed through in evaporation feed preheater 1 and is situated between with high temperature by the preheating for a) carrying out the spent acid containing tar first
Mass heat transfer is heated, and the spent acid containing tar after preheating is passed through thin film evaporator 2；So that spent acid is passed through steam
The hydrogen chloride gas of high-purity is evaporated；
B) after the spent acid containing tar is evaporated by thin film evaporator 2, hydrogen chloride/water mixed gas and tar residue are generated, and will
Tar residue is sent to residue surge tank 3, to subsequent processing；
C) b) middle hydrogen chloride/water mixed gas generated is passed through progress foam removal processing in demister 4, after then handling foam removal
Hydrogen chloride/water mixed gas concentration tower 7 is passed through with 2/3 flow of the flow of spent acid containing tar, and dilute salt is passed through into concentration tower
The volume ratio relationship of acid, the dilute hydrochloric acid being passed through and mixed gas is 2:1, carries out hydrogen chloride/water mixed gas and dilute hydrochloric acid
Concentration reaction, the tower pressure interior force of concentration tower are -0.096Mpa；
D) after the reaction was completed, 7 tower bottom of concentration tower generates the hydrochloric acid and heavy constituent gas that mass percentage concentration is 23%, then for concentration
The hydrochloric acid that mass percentage concentration is 23% is stored by the conveying of concentration tower discharging pump, to spare；Heavy constituent gas is with useless containing tar
1/3 flow of sour flow is passed through in concentration tower reboiler 8, is concentrated and is boiled again, obtains the hydrochloric acid that mass percentage concentration is 23% simultaneously
It is conveyed and is stored by concentration tower discharging pump；The steam pressure 0.4Mpa of tower reboiler is concentrated, temperature is controlled at 120 DEG C；
E) after the reaction was completed, 7 tower top of concentration tower generates acid waste water and light-component gas, then successively by light-component gas for concentration
Condensation process is carried out by concentration tower top first-stage condenser 10 and concentration tower top secondary condenser 11, and combines vacuumize process,
In the treatment process, the acid waste water of generation centralized collection together with 7 tower top of concentration tower generation acid waste water, to subsequent processing；
F) by mass percentage concentration obtained in d) be 23% hydrochloric acid by concentration tower discharging pump 702 be delivered to Analytic Tower 14 into
Row is heated to 115 ~ 120 DEG C, generates dilute hydrochloric acid, hydrogen chloride gas and hydrogen chloride/water mixed gas, mass percentage concentration 23%
Hydrochloric acid in hydrogen chloride/water mixed gas evaporated and be precipitated by the parsing reboiler 15 of 14 bottom of Analytic Tower, it is cold into parsing
It is condensed in condensate tank 16, condensed hydrogen chloride gas is passed into iterative cycles in Analytic Tower 14 again and parses；
G) f) the middle dilute hydrochloric acid generated is passed through concentration tower 7 and carries out concentration reaction again, and the hydrogen chloride gas of generation is passed through Analytic Tower
Condenser 17 is pushed up through condensing, the hydrochloric acid that the mass percentage concentration of generation is 30% is passed through the storage of hydrochloric acid tank 22, generates in condensation process
Hydrogen chloride gas be then successively passed through stage falling-film absorber 18 and second level falling-film absorber 19；
H) hydrochloric acid in concentrating hydrochloric acid discharge nozzle E is successively passed through to concentration acid cooler 21, tail gas absorber 20, second level falling liquid film inhale
Device 19 and stage falling-film absorber 18 are received, carries out absorbing reaction with hydrogen chloride gas, is finally generated in stage falling-film absorber 18
Mass percentage concentration be 30% hydrochloric acid be passed through hydrochloric acid tank 22 storage, the hydrogen chloride tail gas generated in tail gas absorber 20 can
It is passed through in concentration tower 7 and participates in concentration reaction.
Basic principles and main features and advantages of the present invention of the invention have been shown and described above.The skill of the industry
Art personnel it should be appreciated that the present invention is not limited to the above embodiments, the above embodiments and description only describe
The principle of the present invention, without departing from the spirit and scope of the present invention, various changes and improvements may be made to the invention, these
Changes and improvements all fall within the protetion scope of the claimed invention.The claimed scope of the invention by appended claims and
Its equivalent thereof.
Claims (8)
1. a kind of regenerative system of spent acid containing tar, it is characterised in that: the regenerative system include vapo(u)rization system, concentration systems,
Parsing and absorption system,
The vapo(u)rization system includes evaporation feed preheater, thin film evaporator, residue surge tank, demister, evaporative condenser water pot
And Analytic Tower preheater,
The bottom center of the evaporation feed preheater is equipped with the feed inlet A being connected to evaporation feed preheater, and evaporation charging is pre-
The top center of hot device is equipped with the discharging port A being connected to evaporation feed preheater, and the side of the evaporation feed preheater is certainly
The condensed water outlet conduit A and condensed water water inlet line A being connected to evaporation feed preheater are disposed under above；
The lateral wall of the thin film evaporator has collet, and the top two sides of thin film evaporator are respectively equipped with to be connected with thin film evaporator
Logical feed inlet B1 and discharge port B1, the upper end side of thin film evaporator is equipped with the feed inlet B2 being connected to thin film evaporator, thin
The bottom center of film evaporator is equipped with the discharge port B2 being connected to thin film evaporator, and the collet is disposed with from top to bottom
The saturated vapor admission line A and condensed water outlet conduit B being connected to collet, the other end of the condensed water outlet conduit B is also
Setting is connected to evaporative condenser water pot；
The top center of the residue surge tank is equipped with the feed inlet C that is connected to residue surge tank, in the bottom end of residue surge tank
The heart is equipped with the discharge port C being connected to residue surge tank；
The bottom center of the demister is equipped with the feed inlet D being connected to demister, and the top center of demister is equipped with and foam removal
Hydrogen chloride/water mixed gas discharge pipe A of device connection, the bottom portion side end of demister are equipped with the discharge port D being connected to demister；
The top center of the evaporative condenser water pot is equipped with the saturated vapor admission line B being connected to evaporative condenser water pot, and institute
The other end for stating saturated vapor admission line B is connected to setting with saturated vapor admission line A；The side of the evaporative condenser water pot
It is disposed with the condensed water water inlet line C being connected to evaporative condenser water pot and condensed water outlet conduit C from top to bottom；
The top center of the Analytic Tower preheater is equipped with the concentrating hydrochloric acid discharge pipe A being connected to Analytic Tower preheater, parsing
The bottom center of tower preheater is equipped with the concentrating hydrochloric acid feed pipe A being connected to Analytic Tower preheater；The Analytic Tower preheater
The upper end of side is connected to by connecting tube A with condensed water outlet conduit C, and the lower end of the Analytic Tower preheater other side passes through connecting tube
B is connected to condensed water outlet conduit C；
The discharging port A is connected to feed inlet B1 by pipeline A, and the discharge port B2 is connected to feed inlet C by pipeline B, institute
It states discharge port B1 and is connected to feed inlet D by pipeline C, the discharge port D is connected to feed inlet B2 by pipeline D；
The concentration systems include concentration tower, concentration reboiler, concentration condensate water pot, concentration tower top first-stage condenser, concentration tower
It pushes up secondary condenser, vacuum buffer tank and water flow jet and pumps vacuum pump set,
The top center of the concentration tower is equipped with the sour gas outlet A being connected to concentration tower, and the bottom center of concentration tower is equipped with
The concentrating hydrochloric acid discharge pipe B being connected to concentration tower, and the concentrating hydrochloric acid discharge pipe B and concentrating hydrochloric acid feed pipe A connects
Logical setting；Concentrating hydrochloric acid discharge pipe E is provided with and communicated on concentrating hydrochloric acid discharge pipe B, and on concentrating hydrochloric acid discharge pipe B
Also it has been arranged in series concentration tower discharging pump；One side of the concentration tower is successively arranged the dilute salt being connected to concentration tower from top to bottom
Sour feed pipe A, hydrogen chloride/water mixed gas feed pipe A and sour gas discharge pipe A, and hydrogen chloride/water mixed gas
Feed pipe A is connected to setting, the hydrogen chloride/water mixed gas feed pipe A with hydrogen chloride/water mixed gas discharge pipe A
On be also provided with and communicated with hydrogen chloride tail gas feed pipe, the top of another side of the concentration tower is equipped with the acid being connected to concentration tower
Property waste water discharge nozzle A；
The top of the concentration tower reboiler is connected to setting with sour gas discharge pipe A by connecting tube C, and tower reboiler is concentrated
Bottom end setting with concentrating hydrochloric acid discharge pipe B is connected to by connecting tube D；One side of the concentration tower reboiler is from top to bottom
It is disposed with saturated vapor admission line C, condensed water water outlet A 1 and the condensed water water outlet A 2 being connected to concentration reboiler；
The top center of the concentration condensate water pot is equipped with the condensed water water inlet A 1 being connected to concentration condensate water pot, concentration condensation
One side of water pot is disposed with the sour gas discharge pipe B being connected to concentration condensate water pot from top to bottom and condensed water goes out
Waterpipe A, and the condensed water outlet conduit A is connected to setting with condensed water water inlet line A；The other side of condensate water pot is concentrated
End top is equipped with the condensed water water inlet A 2 being connected to concentration condensate water pot；
The condensed water water outlet A 1 is connected to by connecting tube E with condensed water water inlet A 1, and condensed water water outlet A 2 passes through connection
Pipe F is connected to condensed water water inlet A 2；
The top center of the concentration tower top first-stage condenser be equipped with the sour gas that is connected to of concentration tower top first-stage condenser into
Mouth A, the bottom center of concentration tower top first-stage condenser are equipped with the acid waste water discharge nozzle being connected to concentration tower top first-stage condenser
B, and the other end of the acid waste water discharge nozzle B is connected to acid waste water discharge nozzle A, on the acid waste water discharge nozzle B also
It has been arranged in series vacuum condensation waste water pump；The side of the concentration tower top first-stage condenser is disposed with recirculated water from top to bottom
Outlet conduit A and circulating water inlet road A, another side lower part of the concentration tower top first-stage condenser are equipped with and concentration tower top
The sour gas of first-stage condenser connection exports A；
The top center of the concentration tower top secondary condenser be equipped with the sour gas that is connected to of concentration tower top secondary condenser into
Mouth B, and the sour gas import B exports A with sour gas by connecting tube G and is connected to；The bottom of tower top secondary condenser is concentrated
End center is equipped with the acid waste water discharge nozzle C being connected to concentration tower top secondary condenser, and the acid waste water discharge nozzle C's is another
One end is connected to acid waste water discharge nozzle B；The side of the concentration tower top secondary condenser is disposed with circulation from top to bottom
Another side lower part of water outlet conduit B and circulating water inlet road B, the concentration tower top secondary condenser are equipped with and concentration tower
Push up the vacuum lead A of secondary condenser connection；
The top center of the vacuum buffer tank is equipped with the vacuum lead B that setting is connected to vacuum buffer tank, and vacuum-pumping tube
The other end of road B is connected to setting with connecting tube G；The tip-end-side of the vacuum buffer tank is equipped with to be connected to vacuum buffer tank and set
The acid waste water discharge nozzle D set, and the other end of the acid waste water discharge nozzle D is connected to setting with acid waste water discharge nozzle A；Institute
The lower end two sides for stating vacuum buffer tank pass through connecting tube H and connecting tube I and acid waste water discharge nozzle B respectively and acid waste water discharges
Pipe C connection, and acid waste water discharge nozzle E is also provided with and communicated on the acid waste water discharge nozzle A；
The water flow jet pump vacuum pump set is connected to setting with vacuum lead A, also connects on the water flow jet pump vacuum pump set
It is logical to be provided with exhausting pipeline A, and exhausting pipeline B is also provided with and communicated between vacuum lead A and exhausting pipeline A；The water flow
Industry water water inlet line is also provided with and communicated on jet pump vacuum pump set, the water flow jet pumps vacuum pump set from top to bottom successively
It is provided with circulating water outlet pipe road C and circulating water inlet road C；
The parsing and absorption system include Analytic Tower, parsing tower reboiler, parsing condensate water pot, parsing overhead condenser, one
Grade falling-film absorber, second level falling-film absorber, tail gas absorber, concentration acid cooler and hydrochloric acid tank,
The top center of the Analytic Tower is equipped with the hydrogen chloride gas outlet A that setting is connected to Analytic Tower, a side of Analytic Tower
Top is connected to setting with the concentrating hydrochloric acid discharge pipe A on Analytic Tower preheater, and a side lower part of Analytic Tower is equipped with and parsing
Tower and hydrogen chloride/water mixed gas discharge pipe B of parsing tower reboiler top connection setting；The bottom center of the Analytic Tower
Equipped with the dilute hydrochloric acid feed pipe B for being connected to setting with Analytic Tower and parsing tower reboiler bottom end；The another side of the one of the Analytic Tower
Lower part is connected to setting with the dilute hydrochloric acid feed pipe A on concentration tower, has also been arranged in series liquid level on the dilute hydrochloric acid feed pipe A
Flow control valve, and liquid level flow control valve is arranged close to concentration tower；
It is described parsing reboiler a side be disposed with from top to bottom with parsing reboiler be connected to be arranged saturated vapor into
Feed channel D, condensed water water outlet B 1 and condensed water water outlet B 2；
The top center of the parsing condensate water pot is equipped with the condensed water water inlet B 1 that setting is connected to parsing condensate water pot, parsing
The side top of condensate water pot is equipped with the condensed water water inlet B 2 that setting is connected to parsing condensate water pot, parses the another of condensate water pot
One side lower part is connected to setting with the condensed water water inlet line C on evaporative condenser water pot；The condensed water water outlet B 1 passes through company
Adapter tube H is connected to setting with condensed water water inlet B 1, and the condensed water water outlet B 2 is connected by connecting tube I and condensed water water inlet B 2
Logical setting；
The top center of the parsing overhead condenser is equipped with the hydrogen chloride gas import that setting is connected to parsing overhead condenser
A, the bottom center for parsing overhead condenser are equipped with the concentrating hydrochloric acid discharge pipe C that setting is connected to parsing overhead condenser, solution
One side lower part of analysis overhead condenser is equipped with the hydrogen chloride gas being connected to parsing overhead condenser and exports B, and parsing tower top is cold
Another side of condenser is disposed with the circulating water outlet pipe road D and circulation of parsing overhead condenser connection setting from top to bottom
Water water inlet line D, and hydrogen chloride gas outlet A is connected to hydrogen chloride gas import A by hydrogen chloride gas pipeline A and is set
It sets；
One side of the stage falling-film absorber is disposed with the hydrogen chloride gas of stage falling-film absorber connection from top to bottom
Body import B, circulating water outlet pipe road E and circulating water inlet road E, and hydrogen chloride gas outlet B passes through hydrogen chloride gas
Pipeline B is connected to setting with hydrogen chloride gas import B；Another side of the stage falling-film absorber is disposed with from top to bottom
The concentrating hydrochloric acid feed pipe D and hydrogen chloride gas of stage falling-film absorber connection export C；The bottom of the stage falling-film absorber
End center is equipped with the concentrating hydrochloric acid discharge pipe D that setting is connected to stage falling-film absorber, and the concentrating hydrochloric acid discharge pipe D
The other end be connected to setting with concentrating hydrochloric acid discharge pipe C；
One side of the second level falling-film absorber is disposed with the hydrogen chloride gas of second level falling-film absorber connection from top to bottom
Body import C, circulating water outlet pipe road F and circulating water inlet road F, and hydrogen chloride gas outlet C passes through hydrogen chloride gas
Pipeline C is connected to setting with hydrogen chloride gas import C；Another side of the second level falling-film absorber is disposed with from top to bottom
The concentrating hydrochloric acid feed pipe C and hydrogen chloride gas of second level falling-film absorber connection export D；The bottom of the second level falling-film absorber
End center is connected to setting with the concentrating hydrochloric acid feed pipe D on stage falling-film absorber；
One side lower part of the tail gas absorber is provided with the hydrogen chloride gas import D that setting is connected to tail gas absorber, and
The hydrogen chloride gas outlet D is connected to setting with hydrogen chloride gas import D by hydrogen chloride gas pipeline D；The tail gas absorption
Another side top of tower is provided with the concentrating hydrochloric acid feed pipe B being connected to tail gas absorber, the top of the tail gas absorber
End center is connected to setting, the hydrogen chloride tail gas with the hydrogen chloride tail gas feed pipe on hydrogen chloride/water mixed gas feed pipe A
Pressure flow hybrid control valve is also arranged in series on feed pipe, and pressure flow hybrid control valve is arranged close to concentration tower；The tail gas is inhaled
The bottom center for receiving tower is connected to setting with the concentrating hydrochloric acid feed pipe C on second level falling-film absorber；
The top center of the concentration acid cooler is connected to setting with the concentrating hydrochloric acid feed pipe B on tail gas absorber, is concentrated
The bottom center of acid cooler is connected to setting with the concentrating hydrochloric acid discharge pipe E on concentrating hydrochloric acid discharge pipe B；The gelled acid
One side of cooler is disposed with the circulating water outlet pipe road G and circulation that setting is connected to concentration acid cooler from top to bottom
Water water inlet line G；
The upper end of the hydrochloric acid tank is connected to setting, the hydrochloric acid tank with the concentrating hydrochloric acid discharge pipe C on parsing overhead condenser
Upper end and hydrogen chloride gas pipeline C between be also provided with and communicated with hydrogen chloride gas pipeline E；One side lower part of the hydrochloric acid tank
Hydrochloric acid has also been arranged in series equipped with the concentrating hydrochloric acid discharge pipe F being connected to hydrochloric acid tank, and on the concentrating hydrochloric acid discharge pipe F
Discharging pump.
2. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the thin film evaporator has three
Platform is arranged in parallel on pipeline A.
3. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the residue surge tank has two
Platform is arranged in parallel on pipeline B.
4. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the concentration tower discharging pump has two
It is a, it is arranged in parallel on concentrating hydrochloric acid discharge pipe B.
5. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the vacuum condensation waste water pump has
It two, is arranged in parallel between acid waste water discharge nozzle A and acid waste water discharge nozzle B.
6. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the water flow jet pumps vacuum machine
There are three groups, is arranged in parallel on vacuum lead A.
7. the regenerative system of the spent acid according to claim 1 containing tar, it is characterised in that: the hydrochloric acid discharging pump has two
It is a, it is arranged in parallel on stating concentrating hydrochloric acid discharge pipe F.
8. a kind of regeneration method of the regenerative system using the spent acid described in claim 1 containing tar, it is characterised in that: it is described again
Generation method includes the following steps:
Spent acid containing tar is passed through in evaporation feed preheater and is situated between with high temperature by the preheating for a) carrying out the spent acid containing tar first
Mass heat transfer carries out being heated to 75-85 DEG C of temperature, the spent acid containing tar after preheating is passed through thin film evaporator, to give up
The hydrogen chloride gas of high-purity is evaporated by acid by steam；
B) after the spent acid containing tar is evaporated by thin film evaporator, hydrogen chloride/water mixed gas and tar residue are generated, and will
Tar residue send to residue and buffers, to subsequent processing；
C) b) middle hydrogen chloride/water mixed gas generated is passed through progress foam removal processing in demister, after then handling foam removal
Hydrogen chloride/water mixed gas concentration tower is passed through with 2/3 flow of the flow of spent acid containing tar, and dilute salt is passed through into concentration tower
The volume ratio relationship of acid, the dilute hydrochloric acid being passed through and mixed gas is 2:1, carries out hydrogen chloride/water mixed gas and dilute hydrochloric acid
Concentration reaction, the tower pressure interior force of concentration tower are -0.096Mpa；
D) after the reaction was completed, concentration tower tower bottom generates the hydrochloric acid and heavy constituent gas that mass percentage concentration is 23% for concentration, then will
The hydrochloric acid that mass percentage concentration is 23% is by the conveying storage of concentration tower discharging pump, to spare；Heavy constituent gas is with spent acid containing tar
1/3 flow of flow is passed through in concentration tower reboiler, is concentrated and is boiled again, is obtained the hydrochloric acid that mass percentage concentration is 23% and is led to
Cross the conveying storage of concentration tower discharging pump；The steam pressure 0.4Mpa of tower reboiler is concentrated, temperature is controlled at 120 DEG C；
E) after the reaction was completed, concentration column overhead generates acid waste water and light-component gas, then successively by light-component gas for concentration
Condensation process is carried out by concentration tower top first-stage condenser and concentration tower top secondary condenser, and combines vacuumize process, at this
During reason, the acid waste water of generation generates centralized collection together with acid waste water with concentration column overhead, to subsequent processing；
F) hydrochloric acid that mass percentage concentration obtained in d) is 23% Analytic Tower is delivered to by concentration tower discharging pump to heat
To 115 ~ 120 DEG C, dilute hydrochloric acid, hydrogen chloride gas and hydrogen chloride/water mixed gas, the hydrochloric acid that mass percentage concentration is 23% are generated
In hydrogen chloride/water mixed gas by parsing tower bottom parsing reboiler evaporate be precipitated, into parsing condensate water pot in into
Row condensation, condensed hydrogen chloride gas are passed into iterative cycles in Analytic Tower again and parse；
G) f) the middle dilute hydrochloric acid generated is passed through concentration tower and carries out concentration reaction again, and the hydrogen chloride gas of generation is passed through parsing tower top
For condenser through condensing, the hydrochloric acid that the mass percentage concentration of generation is 30% is passed through hydrochloric acid tank storage, the chlorination generated in condensation process
Hydrogen is then successively passed through stage falling-film absorber and second level falling-film absorber；
H) hydrochloric acid in concentrating hydrochloric acid discharge nozzle E is successively passed through to concentration acid cooler, tail gas absorber, second level falling-film absorber
With stage falling-film absorber, absorbing reaction is carried out with hydrogen chloride gas, the quality percentage finally generated in stage falling-film absorber
The hydrochloric acid that concentration is 30% is passed through hydrochloric acid tank storage, and the hydrogen chloride tail gas generated in tail gas absorber, which can be passed through in concentration tower, joins
It is reacted with concentration.
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