CN110127630A - Spent acid purifying plant and its method of purification - Google Patents
Spent acid purifying plant and its method of purification Download PDFInfo
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- CN110127630A CN110127630A CN201910295082.XA CN201910295082A CN110127630A CN 110127630 A CN110127630 A CN 110127630A CN 201910295082 A CN201910295082 A CN 201910295082A CN 110127630 A CN110127630 A CN 110127630A
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- spent acid
- evaporation
- outlet
- tower
- purifying plant
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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
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/88—Concentration of sulfuric acid
-
- C—CHEMISTRY; METALLURGY
- C01—INORGANIC CHEMISTRY
- C01B—NON-METALLIC ELEMENTS; COMPOUNDS THEREOF; METALLOIDS OR COMPOUNDS THEREOF NOT COVERED BY SUBCLASS C01C
- C01B17/00—Sulfur; Compounds thereof
- C01B17/69—Sulfur trioxide; Sulfuric acid
- C01B17/90—Separation; Purification
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Inorganic Chemistry (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a kind of spent acid purifying plant and its methods of purification, including dynamic wave evaporating column, interior tower chamber is offered in the dynamic wave evaporating column, circulation fluid entrance is offered on the upside of the interior tower chamber, the circulation fluid entrance is nested with spray tube, the spray tube is equipped with spray head, the furnace gas outlet that the interior tower top of chamber offers, the interior tower chamber side is connected with dynamic wave evaporator, the high-temperature furnace gas entrance from evaporation section is offered above the dynamic wave evaporator, tower reactor is equipped with below the interior tower chamber, the tower reactor side offers first discharge port, the first discharge port connects efferent duct, the efferent duct is equipped with spent acid evaporation pump, described efferent duct one end is equipped with guiding evaporation outlet.The method of the present invention is all to carry out adiabatic evaporation using high-temperature furnace gas in tower, and there is no blocking pipelines, does not need other thermal energy and greatlys save operation cost of enterprises.
Description
Technical field
The present invention relates to industrial waste purification technique field more particularly to spent acid purifying plant and its methods of purification.
Background technique
Waste Sulfuric Acid processing mainly has Waste Sulfuric Acid concentration, high temperature evaporation, chemical oxidation, extraction, crystallization, production chemical fertilizer and neutralization
The methods of processing.Each enterprise is generally according to the purposes of sulfuric acid after Waste Sulfuric Acid amount, sulfur waste acid concentration, impurity component and content, processing
Etc. taking different processing methods, it is sometimes desirable to which several method is used cooperatively.In these methods, only neutralisation treatment method cannot be again
Raw sulfuric acid.Handling Waste Sulfuric Acid is mainly the impurity removed in Waste Sulfuric Acid, while to sulfuric acid enrichment.
Waste sulfuric acid concentration method is suitble to handle the lesser spent acid of quantity, during dilute Waste Sulfuric Acid is concentrated in heating, sulfur waste
Inorganic contaminants (such as ferrous sulfate) in acid can crystallize precipitation；The reactions such as oxidation, polymerization, transformation can then occur for organic impurities
It is general using these impurity are filtered to remove for dark gum or suspended matter, to reach pair of removal impurity, concentration dilute sulfuric acid
Weight purpose.Waste sulfuric acid concentration method technology is more mature, and application is wider, has more than 150 covering devices within 2013.
From the point of view of production practices, Waste Sulfuric Acid concentration in China's has 4: 1, Waste Sulfuric Acid concentration is to the requirement of device material
Height, generallys use titanium atmospheric evaporation or enamel decompression thin film evaporator, plant investment are larger；2, steam, water, the electric consumption
Greatly, operating cost is high；3, complicated for operation, maintenance difficult and costly；4, Waste Sulfuric Acid treating capacity is small, and evaporation tubes easily block,
Run less stable.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
One purpose is to propose spent acid purifying plant and its method of purification, the inventive method are all that adiabatic evaporation is carried out in tower, dress
It is of less demanding to set material, there is no blocking pipelines.
A kind of spent acid purifying plant according to an embodiment of the present invention, including evaporating column offer interior tower in the evaporating column
Chamber, the interior tower chamber upside open up the circulation fluid entrance of evaporation in need, and the circulation fluid entrance is nested with spray tube, the spray
Shower pipe is equipped with spray head, and the interior tower top of chamber opens up furnace gas outlet, and the interior tower chamber side is connected with evaporator, the steaming
High-temperature furnace gas entrance is opened up above hair device, is equipped with tower reactor below the interior tower chamber, the tower reactor side offers first discharge port,
The first discharge port connects efferent duct, and the efferent duct is equipped with spent acid evaporation pump, and described efferent duct one end is equipped with and evaporates
Mouthful, the tower reactor other side offers the second outlet, and second outlet connects circulating line, sets on the circulating line
There is waste acid recycle pump.
Preferably, the gas outlet be used for enter 400 DEG C or less furnace gases, the first discharge port for be discharged 80% with
Lower spent acid, second outlet is for being discharged 80% or more spent acid, and the evaporation outlet is for being oriented to 80% spent acid devaporation
Workshop section.
Preferably, the first discharge port and the second outlet outlet outer wall are fixedly connected with thermometer.
Preferably, the regulating valve of control flow is threaded on the circulating line.
Preferably, the evaporating column is dynamic wave evaporating column, and the evaporator is dynamic wave evaporator.
Preferably, the circulation fluid entrance setting quantity is 1-4, and the spray head setting quantity is 1-8.
Preferably, the spray tube top is welded with circulating line.
Preferably, part flow arrangement is fixedly installed in the tower reactor.
Preferably, method of purification are as follows:
S1: it adiabatic evaporation: using the sensible heat of 350 DEG C of -400 DEG C of evaporation furnace gases, is steamed by dynamic wave evaporator and dynamic wave
Tower adiabatic evaporation is sent out, 350 DEG C of -400 DEG C of furnace gases pass through the upward convection current of spray head to 80% spent acid below from top to bottom；
S2: heat transfer evaporation: 350 DEG C of -400 DEG C of furnace gases of interior tower chamber for entering back into dynamic wave evaporating column flow from bottom to top, give up
The acid evaporation of counter current contact heat transfer from top to bottom, evaporates the moisture to get off and is discharged into purification system from furnace gas outlet；
S3: component discharge: not up to 80% or more spent acid carries out circular treatment, concentration after evaporation by first discharge port
Reach 200 DEG C of 80% or more, temperature or so of spent acid to be discharged by the second outlet, then evaporation outlet is passed through by spent acid evaporation pump
It is discharged into vapourizing furnace and is evaporated relieving haperacidity.
Beneficial effect in the present invention is: being steamed using the sensible heat of high temperature evaporation furnace gas by dynamic wave evaporator and dynamic wave
Send out tower adiabatic evaporation, high-temperature furnace gas from top to bottom 80% spent acid below by the upward convection current of spray head, moment high speed contact from
And reach insulation heat transfer, mass transfer effect；Enter back into the interior tower chamber high-temperature furnace gas of dynamic wave evaporating column from bottom to top, spent acid from upper and
Lower counter current contact heat transfer evaporation, evaporates the moisture to get off and is discharged into purification system from furnace gas outlet；Concentration reaches after evaporation
80% or more, 200 DEG C of temperature or so of spent acid is discharged into vapourizing furnace by evaporation outlet by spent acid evaporation pump and is evaporated system
Acid solves the problems, such as that evaporation tubes easily block us and invent a kind of evaporation of spent acid lower than the new side of 80% waste acid concentration below
Method solves the problems, such as that above-mentioned concentrated cost is high, investment is big, our staff are specially made that following statistics thus: concentration one
Ton spent acid can save 1.2 tons of 0.6KPa, 180 DEG C of steam, while 200 DEG C of 80% spent acid enters vapourizing furnace and can reduce evaporation
The consumption of 0.11 ton of natural gas, steam press 3200 yuan/ton by 200 yuan/ton, natural gas, evaporate one ton of spent acid save the cost 592
Member, handling 50,000 tons of spent acid per year can be 29,600,000 yuan of save the cost, uses spent acid purifying plant proposed by the present invention and side
Method not only securely and reliably, but also can save a large amount of cost without thermal energy consumption for enterprise.
Detailed description of the invention
Attached drawing is used to provide further understanding of the present invention, and constitutes part of specification, with reality of the invention
It applies example to be used to explain the present invention together, not be construed as limiting the invention.In the accompanying drawings:
Fig. 1 is the structural schematic diagram of spent acid purifying plant proposed by the present invention and its method of purification；
Fig. 2 is the flow chart of spent acid purifying plant proposed by the present invention and its method of purification method of purification.
In figure: 1- dynamic wave evaporating column, 11- furnace gas outlet, 12- spray head, tower chamber, 14- tower reactor, 15- second in 13-
Outlet, 16- first discharge port, 17- spray tube, 18- circulation fluid entrance, 2- waste acid recycle pump, 21- circulating line, 3- power
Wave evaporator, 4- high-temperature furnace gas entrance, 5- evaporate outlet, 6- spent acid evaporation pump, 7- efferent duct, 8- regulating valve.
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description, it is clear that described embodiments are only a part of the embodiments of the present invention, instead of all the embodiments.
Examples of the embodiments are shown in the accompanying drawings, and in which the same or similar labels are throughly indicated identical or classes
As element or element with the same or similar functions.The embodiments described below with reference to the accompanying drawings are exemplary, purport
It is being used to explain the present invention, and is being not considered as limiting the invention.
In the description of the present invention, it is to be understood that, term " center ", " longitudinal direction ", " transverse direction ", " length ", " width ",
" thickness ", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom" "inner", "outside", " up time
The orientation or positional relationship of the instructions such as needle ", " counterclockwise ", " axial direction ", " radial direction ", " circumferential direction " be orientation based on the figure or
Positional relationship is merely for convenience of description of the present invention and simplification of the description, rather than the device or element of indication or suggestion meaning must
There must be specific orientation, be constructed and operated in a specific orientation, therefore be not considered as limiting the invention.
In addition, term " first ", " second " are used for descriptive purposes only and cannot be understood as indicating or suggesting relative importance
Or implicitly indicate the quantity of indicated technical characteristic.Define " first " as a result, the feature of " second " can be expressed or
Implicitly include one or more of the features.In the description of the present invention, the meaning of " plurality " is two or more,
Unless otherwise specifically defined.
In the present invention unless specifically defined or limited otherwise, term " installation ", " connected ", " connection ", " fixation " etc.
Term shall be understood in a broad sense, for example, it may be being fixedly connected, may be a detachable connection, or integral；It can be mechanical connect
It connects, is also possible to be electrically connected；It can be directly connected, can also can be in two elements indirectly connected through an intermediary
The interaction relationship of the connection in portion or two elements.It for the ordinary skill in the art, can be according to specific feelings
Condition understands the concrete meaning of above-mentioned term in the present invention.
Referring to Fig.1-2, spent acid purifying plant and its method of purification, including dynamic wave evaporating column 1, in dynamic wave evaporating column 1
Interior tower chamber 13 is offered, the circulation fluid entrance 18 of evaporation in need is opened up on the upside of interior tower chamber 13, circulation fluid entrance 18 is nested with spray
Shower pipe 17, spray tube 17 are equipped with spray head 12, are offered at the top of interior tower chamber 13 for entering 400 DEG C or less flue gas cleaning systems
Furnace gas outlet 11, interior 13 side of tower chamber is connected with dynamic wave evaporator 3, offers above dynamic wave evaporator 3 and carry out spontaneous evaporation
The high-temperature furnace gas entrance 4 of workshop section, tower reactor 14 is equipped with below interior tower chamber 13, and 14 side of tower reactor offers useless for being discharged 80% or less
The first discharge port 16 of acid, first discharge port 16 connect efferent duct 7, and efferent duct 7 is equipped with spent acid evaporation pump 6,7 one end of efferent duct
Evaporation outlet 5 equipped with 80% spent acid devaporation workshop section of guiding, 14 other side of tower reactor is offered for 80% or more spent acid to be discharged
The second outlet 15, the second outlet 15 connect circulating line 21, circulating line 21 be equipped with waste acid recycle pump 2；First row
Outlet 16 is fixedly connected with thermometer for measuring first discharge port 16 and the second outlet 15 with the second outlet 15 outlet outer wall
The temperature of spent acid；The regulating valve 8 of control flow is threaded on circulating line 21, for adjusting the flow of circulating line 21；
It is 1-4 that quantity, which is arranged, in circulation fluid entrance 18, and it is 1-8 that quantity, which is arranged, in spray head 12；17 top of spray tube is welded with circulation pipe
Road 21；Part flow arrangement is equipped in tower reactor 14；
Its method of purification are as follows:
S1: it adiabatic evaporation: using the sensible heat of 350 DEG C of -400 DEG C of evaporation furnace gases, is steamed by dynamic wave evaporator 3 and dynamic wave
1 adiabatic evaporation of tower is sent out, 350 DEG C of -400 DEG C of furnace gases pass through the upward convection current of spray head 12 to 80% spent acid below from top to bottom；
S2: heat transfer evaporation: 12,350 DEG C of -400 DEG C of furnace gases of interior tower chamber for entering back into dynamic wave evaporating column 1 flow from bottom to top
Dynamic, the spent acid evaporation of counter current contact heat transfer from top to bottom evaporates the moisture to get off and is discharged into purification system from furnace gas outlet 11；
S3: component discharge: not up to 80% or more spent acid carries out circular treatment by first discharge port 16, dense after evaporation
The spent acid that degree reaches 200 DEG C of 80% or more, temperature or so is discharged by the second outlet 15, then passes through steaming by spent acid evaporation pump 6
Sending mouth 5 is discharged into vapourizing furnace and is evaporated relieving haperacidity.
Working principle are as follows: using the sensible heat of 350 DEG C of -400 DEG C of evaporation furnace gases, steamed by dynamic wave evaporator 3 and dynamic wave
1 adiabatic evaporation of tower is sent out, 350 DEG C of -400 DEG C of furnace gases pass through the upward convection current of spray head 12, wink to 80% spent acid below from top to bottom
Between high speed contact to reach insulation heat transfer, mass transfer effect；Enter back into 12,350 DEG C -400 DEG C of interior tower chamber of dynamic wave evaporating column 1
Furnace gas flows from bottom to top, and the spent acid evaporation of counter current contact heat transfer from top to bottom evaporates the moisture that gets off from 11 row of furnace gas outlet
Enter purification system out；Not up to 80% or more spent acid carries out circular treatment by first discharge port 16, and concentration reaches after evaporation
It is discharged to 200 DEG C of 80% or more, temperature or so of spent acid by the second outlet 15, then by spent acid evaporation pump 6 by evaporating
Mouth 5 is discharged into vapourizing furnace and is evaporated relieving haperacidity.
Waste acid treatment method is generally utilized by alkali neutralization discharge, evaporation and concentration and evaporation SO2 relieving haperacidity, evaporates SO2 relieving haperacidity
It is required that 80% or more the concentration of spent acid.If the first large steam consumption is concentrated with steam in 80% spent acid below；Second device material
Matter requires height, because the boiling point of 60% sulfuric acid is 141 DEG C, if 200 DEG C of 80% or more boiling point or more, only tantalum material are resistant to so
High diluted acid temperature, but tantalum material price is with high investment big, and enterprise cannot withstand；All contain different degrees of impurity in third spent acid,
Impurity reaches certain temperature will Crystallization Plugging enrichment facility.Through overtesting, industrialized production, we invent a kind of spent acid evaporation
Lower than 80% waste acid concentration new method below, solve the problems, such as that above-mentioned concentrated cost is high, investment is big, device is stifled, thus our works
Make personnel and be specially made that following statistics: one ton of spent acid of concentration can save 1.2 tons of 0.6KPa, 180 DEG C of steam, while 200 DEG C
80% spent acid enter vapourizing furnace and can reduce the consumption of 0.11 ton of natural gas of evaporation, steam pressed by 200 yuan/ton, natural gas
3200 yuan/ton, 592 yuan of one ton of spent acid save the cost (1.2 × 200=240,0.11 × 3200=352) is evaporated, handles 5 per year
Ten thousand tons of spent acid can be 29,600,000 yuan of save the cost.
From the above data, it can be seen that using spent acid purifying plant proposed by the present invention and method, not only securely and reliably, and
It and can be the problem of enterprise saves a large amount of cost, and device blocks.
In the present invention unless specifically defined or limited otherwise, fisrt feature in the second feature " on " or " down " can be with
It is that the first and second features directly contact or the first and second features pass through intermediary mediate contact.Moreover, fisrt feature exists
Second feature " on ", " top " and " above " but fisrt feature be directly above or diagonally above the second feature, or be merely representative of
First feature horizontal height is higher than second feature.Fisrt feature can be under the second feature " below ", " below " and " below "
One feature is directly under or diagonally below the second feature, or is merely representative of first feature horizontal height less than second feature.
In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show
The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example
Point is included at least one embodiment or example of the invention.In the present specification, schematic expression of the above terms are not
Centainly refer to identical embodiment or example.Moreover, particular features, structures, materials, or characteristics described can be any
One or more embodiment or examples in can be combined in any suitable manner.
The foregoing is only a preferred embodiment of the present invention, but scope of protection of the present invention is not limited thereto,
Anyone skilled in the art in the technical scope disclosed by the present invention, according to the technique and scheme of the present invention and its
Inventive concept is subject to equivalent substitution or change, should be covered by the protection scope of the present invention.
Claims (9)
1. a kind of spent acid purifying plant, it is characterised in that: including evaporating column, interior tower chamber is offered in the evaporating column, it is described interior
The circulation fluid entrance of evaporation in need is opened up on the upside of tower chamber, the circulation fluid entrance is nested with spray tube, sets on the spray tube
There is spray head, the interior tower top of chamber opens up furnace gas outlet, and the interior tower chamber side is connected with evaporator, the evaporator top
It opening up high-temperature furnace gas entrance, is equipped with tower reactor below the interior tower chamber, the tower reactor side offers first discharge port, and described first
Outlet connects efferent duct, and the efferent duct is equipped with spent acid evaporation pump, and described efferent duct one end is equipped with evaporation outlet, the tower
The kettle other side offers the second outlet, and second outlet connects circulating line, and the circulating line is followed equipped with spent acid
Ring pump.
2. a kind of spent acid purifying plant according to claim 1, it is characterised in that: the gas outlet is used to enter 400
DEG C or less furnace gas, the first discharge port for be discharged 80% or less spent acid, second outlet for be discharged 80% or more
Spent acid, the evaporation outlet is for being oriented to 80% spent acid devaporation workshop section.
3. a kind of spent acid purifying plant according to claim 1, it is characterised in that: the first discharge port and the second discharge
Mouth outlet outer wall is fixedly connected with thermometer.
4. a kind of spent acid purifying plant according to claim 1, it is characterised in that: be threaded on the circulating line
Control the regulating valve of flow.
5. a kind of spent acid purifying plant according to claim 1, it is characterised in that: the evaporating column is dynamic wave evaporation
Tower, the evaporator are dynamic wave evaporator.
6. a kind of spent acid purifying plant according to claim 1, it is characterised in that: the circulation fluid entrance is arranged quantity and is
1-4, the spray head setting quantity is 1-8.
7. a kind of spent acid purifying plant according to claim 1, it is characterised in that: the spray tube top is welded with circulation
Pipeline.
8. a kind of spent acid purifying plant according to claim 1, it is characterised in that: be fixedly installed with shunting in the tower reactor
Device.
9. a kind of method of purification of spent acid purifying plant according to claim 1, it is characterised in that: its method of purification are as follows:
S1: adiabatic evaporation: using the sensible heat of 350 DEG C of -400 DEG C of evaporation furnace gases, pass through dynamic wave evaporator and dynamic wave evaporating column
Adiabatic evaporation, 350 DEG C of -400 DEG C of furnace gases pass through the upward convection current of spray head to 80% spent acid below from top to bottom；
S2: heat transfer evaporation: 350 DEG C of -400 DEG C of furnace gases of interior tower chamber for entering back into dynamic wave evaporating column flow from bottom to top, and spent acid is certainly
Upper and lower counter current contact heat transfer evaporation, evaporates the moisture to get off and is discharged into purification system from furnace gas outlet；
S3: component discharge: not up to 80% or more spent acid carries out circular treatment by first discharge port, and concentration reaches after evaporation
80% or more, 200 DEG C of temperature or so of spent acid is discharged by the second outlet, then passes through evaporation outlet discharge by spent acid evaporation pump
Relieving haperacidity is evaporated into vapourizing furnace.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295082.XA CN110127630A (en) | 2019-04-12 | 2019-04-12 | Spent acid purifying plant and its method of purification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910295082.XA CN110127630A (en) | 2019-04-12 | 2019-04-12 | Spent acid purifying plant and its method of purification |
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| Publication Number | Publication Date |
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| CN110127630A true CN110127630A (en) | 2019-08-16 |
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| CN201910295082.XA Pending CN110127630A (en) | 2019-04-12 | 2019-04-12 | Spent acid purifying plant and its method of purification |
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| CN101757844A (en) * | 2008-12-24 | 2010-06-30 | 中国石化集团宁波工程有限公司 | Method and device for performing flue gas desulfurization by using ammonia process |
| CN105194956A (en) * | 2015-09-30 | 2015-12-30 | 苏州韵蓝环保科技有限公司 | Waste gas washing tower |
| CN106745436A (en) * | 2017-02-28 | 2017-05-31 | 山东大学 | A kind of utilization low temperature bypass flue gas concentrates the system and method for brine waste |
| CN107055659A (en) * | 2016-12-16 | 2017-08-18 | 阳煤集团青岛恒源化工有限公司 | A kind of method and its device for reclaiming soluble salt waste water |
| CN107473304A (en) * | 2017-08-25 | 2017-12-15 | 金川集团股份有限公司 | A kind of device and processing method of metallurgical off-gas acid-making low temperature position waste heat adiabatic evaporation waste acid |
| CN207734822U (en) * | 2017-12-01 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of coking relieving haperacidity exhaust gas cleaner |
-
2019
- 2019-04-12 CN CN201910295082.XA patent/CN110127630A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101757844A (en) * | 2008-12-24 | 2010-06-30 | 中国石化集团宁波工程有限公司 | Method and device for performing flue gas desulfurization by using ammonia process |
| CN105194956A (en) * | 2015-09-30 | 2015-12-30 | 苏州韵蓝环保科技有限公司 | Waste gas washing tower |
| CN107055659A (en) * | 2016-12-16 | 2017-08-18 | 阳煤集团青岛恒源化工有限公司 | A kind of method and its device for reclaiming soluble salt waste water |
| CN106745436A (en) * | 2017-02-28 | 2017-05-31 | 山东大学 | A kind of utilization low temperature bypass flue gas concentrates the system and method for brine waste |
| CN107473304A (en) * | 2017-08-25 | 2017-12-15 | 金川集团股份有限公司 | A kind of device and processing method of metallurgical off-gas acid-making low temperature position waste heat adiabatic evaporation waste acid |
| CN207734822U (en) * | 2017-12-01 | 2018-08-17 | 中冶焦耐(大连)工程技术有限公司 | A kind of coking relieving haperacidity exhaust gas cleaner |
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Application publication date: 20190816 |