CN207951088U - Cement kiln flue gas collecting carbonic anhydride treater - Google Patents
Cement kiln flue gas collecting carbonic anhydride treater Download PDFInfo
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- CN207951088U CN207951088U CN201721518292.3U CN201721518292U CN207951088U CN 207951088 U CN207951088 U CN 207951088U CN 201721518292 U CN201721518292 U CN 201721518292U CN 207951088 U CN207951088 U CN 207951088U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/151—Reduction of greenhouse gas [GHG] emissions, e.g. CO2
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Abstract
The utility model provides a kind of cement kiln flue gas collecting carbonic anhydride treater applied to cement industry carbon capture technical field, the flue gas pretreatment component (1) of the cement kiln flue gas collecting carbonic anhydride treater is configured to that the structure of cooling and denitration desulfurization process will be carried out in cement kiln flue gas, carbon dioxide absorption desorption component (2) is configured to be absorbed and be parsed into the structure of the carbon dioxide gas of high concentration by compound lye by the carbon dioxide in flue gas pretreatment component (1) treated flue gas, carbon dioxide finished product prepares component (4) and is configured to for the dry gas that carbon dioxide compression drying part (3) exports to be prepared into the structure of food-grade carbon-dioxide product or industrial grade carbon-dioxide.Cement kiln flue gas collecting carbonic anhydride treater described in the utility model can reduce carbon dioxide and discharge of other pollutants to air, and meet the requirement of maximum discharge industry reduction of greenhouse gas discharge.
Description
Technical field
The utility model belongs to cement industry carbon capture technical field, is to be related to a kind of cement kiln flue gas more specifically
Collecting carbonic anhydride treater.
Background technology
With the fast development of modern industry, the mankind make the extensive of the carbon compounds fuel such as coal, oil, natural gas
With and extensive forest fire and green plants destruction, cause the concentration of CO2 in air to increase year by year.Greenhouse gases packet
Carbon dioxide (CO2), vapor (H2O), methane (CH4), nitrogen oxides (NOX) etc. are included, and carbon dioxide is most important temperature
Room gas, it is about 70% that content, which increases to the contribution for enhancing greenhouse effects,.The main industries of current China CO2 discharges are coals
The high energy-consuming industries such as electricity, cement, steel, smelting, wherein cement industry account for about the 15% of national industry CO2 discharge capacitys.As me
The column support type industry of state's economic construction, cement industry are made that tremendous contribution for expanding economy and social progress, while
Consume a large amount of resource and the energy.It analyzes according to statistics, 1 ton of cement of production about discharges 0.9 ton of CO2, is produced by 16 years national cements
Amount estimates 2,300,000,000 tons of measuring and calculating, has discharged 2,000,000,000 tons of CO2 altogether.Currently, though cement industry desulphurization denitration technology is ripe, carbon capture
Technology is still blank.Therefore, cause cement industry CO2 exhaust emissions serious.It is therefore desirable to develop and lay in carbon trapping technique
(CCS), first, the energy resource structure in China is based on coal, with the fast development of Chinese national economy, urbanization process, CO2 rows
It will be high-volume chronically at a high position, CCS is the important technology approach of medium-term and long-term reduction of greenhouse gas discharge；Second is that development CO2 trappings and money
Source also provides new technological approaches using technology for the development of current low-carbon green；Third, development CCS technologies are coal chemical industry, steel
The active demand of the maximum discharges industry reduction of greenhouse gas discharge such as iron, cement；It is produced in addition, being likely to form global low-carbon in view of future
Industry, development CCS technologies will be the important opportunities for promoting low-carbon technology competitiveness.
Utility model content
Technical problem to be solved in the utility model is：In view of the deficiencies of the prior art, a kind of simple in structure, energy is provided
Carbon dioxide in the flue gas generated when enough effectively working cement kiln is effectively recycled, and carbon dioxide and other pollutions are reduced
Discharge of the object to air meets the requirement of maximum discharge industry reduction of greenhouse gas discharge, final effectively to reduce pollution from exhaust emission, realizes ring
Protect the cement kiln flue gas collecting carbonic anhydride treater of function.
Solve the problems, such as that techniques discussed above, the technical solution that the utility model is taken are：
The utility model is a kind of cement kiln flue gas collecting carbonic anhydride treater, the cement kiln flue gas two
It is dry that carbonoxide trapping treater includes flue gas pretreatment component, carbon dioxide absorption desorbs component, carbon dioxide compression
Dry component, carbon dioxide finished product prepare component, and the flue gas pretreatment component is configured to carry out in cement kiln flue gas
The structure of cooling and denitration desulfurization process, carbon dioxide absorption desorption component are configured to pass through at flue gas pretreatment component
The carbon dioxide in flue gas after reason is absorbed by compound lye and is parsed into the structure of the carbon dioxide gas of high concentration,
Carbon dioxide compression drying part is configured to form the lye drying and dehydrating that carbon dioxide absorption desorption component transfers out
The structure of dry gas, carbon dioxide finished product prepare component and are configured to the drying for exporting carbon dioxide compression drying part
Gas is prepared into the structure of food-grade carbon-dioxide product or industrial grade carbon-dioxide.
The flue gas pretreatment component includes desulfurization water scrubber, desulfurization water scrubber by air-introduced machine and connecting line I with
The flue gas emission mouth of cement kiln is connected to, and storage filler and desulfuration solution in desulfurization water scrubber, the flue gas that connecting line I conveys pass through
When in desulfurization water scrubber, the desulfuration solution in desulfurization water scrubber is configured to sulfur dioxide, nitre and the titanium dioxide in flue gas
The structure that nitrogen is absorbed, desulfurization water scrubber desorb component with carbon dioxide absorption by connecting pipe II and connect.
It includes absorption tower, regenerator that carbon dioxide absorption, which desorbs component, and absorption tower is connected to regenerator, and desulfurization water scrubber is logical
It crosses connecting pipe II to be connected to absorption tower, filler and compound lye is stored in absorption tower, filler and compound alkali are stored in regenerator
Liquid, regenerator are connected to by connecting pipe III with carbon dioxide compression drying part.
The carbon dioxide compression drying part includes compressor, desulfurization bed, drying bed, is dried with carbon dioxide compression
The connecting pipe III of members is communicated with compressor, and compressor is connected to desulfurization bed, and desulfurization bed is connected to drying bed, drying bed
Members are prepared by connecting pipe IV and carbon dioxide finished product.
It includes that food-grade carbon-dioxide finished product prepares component and technical grade dioxy that the carbon dioxide finished product, which prepares component,
Change carbon finished product and prepare component, it includes component adsorbent bed, food-grade rectifying column that food-grade carbon-dioxide finished product, which prepares component, and component is inhaled
Attached bed is connected to connecting pipe IV, and component adsorbent bed is connected to food-grade rectifying column simultaneously, food-grade rectifying column while and food
Grade carbon-dioxide finished product storage tank is connected to, and it includes technical grade rectifying column that the industrial grade carbon-dioxide finished product, which prepares component, industry
Grade rectifying column is connected to connecting pipe IV, and technical grade rectifying column is connected to industrial grade carbon-dioxide finished product storage tank simultaneously.
When by the flue gas of desulfurization water scrubber by absorption tower, the compound lye in absorption tower is configured to will be in gas
The structure adsorbed of carbon dioxide, the compound lye of absorbing carbon dioxide is configured to enter regenerator from absorption tower
Structure, when the compound lye of absorbing carbon dioxide passes through regenerator, tower reactor steam is configured to answer absorbing carbon dioxide
The structure that lye is heated is closed, when the compound lye of absorbing carbon dioxide passes through regenerator, the compound alkali of absorbing carbon dioxide
Carbon dioxide in liquid is arranged to desorb to form gaseous carbon dioxide raw material mix from compound lye.
The connecting line I is connected to desulfurization water scrubber lower end, and the desulfuration solution stored in desulfurization water scrubber is set as
The structure that can be flowed from desulfurization water scrubber upper end to desulfurization water scrubber lower end, described II one end of connecting pipe are washed with desulfurization
Tower upper-end part of driving is connected to, and the absorption tower that II other end of connecting pipe desorbs component with carbon dioxide absorption is connected to.
The connecting pipe II is connected to absorption tower lower end, and the compound lye placed in absorption tower is configured to from suction
The structure that tower upper end is flowed to absorption tower lower end is received, heat exchanger is set between absorption tower and regenerator, desulfurization water scrubber absorbs
Packing layer is respectively set in tower, regenerator, for the tower reactor steam setting in regenerator in regeneration tower bottom, regenerator upper end passes through company
Take over road III is connected to carbon dioxide compression drying part
The food-grade carbon-dioxide finished product prepares component and industrial grade carbon-dioxide finished product prepares component and set for parallel connection
It sets, food-grade carbon-dioxide finished product prepares and is provided with flashboard in the connecting pipe between component and carbon dioxide compression drying part
Valve I, prepared by industrial grade carbon-dioxide finished product is also equipped in the connecting pipe between component and carbon dioxide compression drying part
Slide valve II, when slide valve I is closed and slide valve II is opened, cement kiln flue gas collecting carbonic anhydride purification process dress
Install the structure for being set to and can only producing technical grade carbon dioxide product；It is described when slide valve I is opened and slide valve II is closed
Cement kiln flue gas collecting carbonic anhydride treater is set as that the structure of food-grade carbon-dioxide product can only be produced；Work as lock
When plate valve I and slide valve II open simultaneously, the cement kiln flue gas collecting carbonic anhydride treater is configured to
The structure of technical grade and food-grade carbon-dioxide product is produced simultaneously.
The compressor of the carbon dioxide compression drying part is configured to the gaseous state titanium dioxide to entering compressor
Carbon raw material is pressurized successively, the structure of cooling water dividing, steady pressure treatment, the solid desulfurating agent in desulfurization bed be configured to into
Cross the structure that the gaseous sulphide that the gaseous carbon dioxide raw material of desulfurization bed is merely able to carries out purified treatment, the solid in drying bed
Drier is configured to carry out the gaseous carbon dioxide raw material by drying bed the structure of dehydration and drying processing.
Using the technical solution of the utility model, advantageous effect below can be obtained：
Cement kiln flue gas collecting carbonic anhydride treater described in the utility model is discharged being produced to cement kiln
The flue gas gone out is first handled flue gas before being discharged to air, and the processing unit of above structure, be trapped by carbon it is pure
Change technology handles the flue gas generated from cement kiln, and the flue gas is by the denitration of quality coal in cement kiln systems itself, de-
The processing such as sulphur, dedusting, each component content (the especially content of CO2) can be held because of raw material mill, grind and stop slightly fluctuating in flue gas,
Middle carbonated 18.0~22.32%, nitrogen 60.82~60.9%, oxygen 8.36~9.0%, moisture 8.5~10.1%,
Remaining is carbon monoxide, nitrogen oxides, sulfur dioxide, and dust etc. is less than the impurity that discharging standards value requires.And this practicality
The CO2 trapping techniques of novel use, unstrpped gas of the cement kiln flue gas as the present apparatus can produce food simultaneously using two-step method
The grade carbon dioxide product different with industrial two kinds of quality requirements of grade carbon-dioxide.The first step is using chemical-solvent method two
Concentration of carbon is aoxidized from 18% or so concentrate to 89% or more, second step is purified to 99.9% or more using absorption distillation method.It is above-mentioned
Collecting carbonic anhydride purification devices will carry out cooling and denitration desulfurization process by flue gas pretreatment component 1 in cement kiln flue gas,
Then desorbing component 2 by carbon dioxide absorption will lead to by the carbon dioxide in treated the flue gas of flue gas pretreatment component 1
It crosses compound lye to be absorbed, and parses the carbon dioxide gas for forming higher concentration so that flue gas passes through two that processing is formed
The concentration of the CO2 of carbon oxide gas reaches 89% or more, and carbon dioxide gas is then transported to carbon dioxide compression drying again
Component 3, carbon dioxide compression drying part 3 can desorb the lye drying and dehydrating that component 2 transfers out, shape to carbon dioxide absorption
At dry gas, the concentration of the CO2 of dry gas reaches 95% or more, is then prepared at component 4 using carbon dioxide finished product
Reason, carbon dioxide finished product, which prepares component 4, to be prepared into food-grade by the dry gas that carbon dioxide compression drying part 3 exports
Carbon dioxide product or industrial grade carbon-dioxide, the concentration of the CO2 of carbon dioxide gas at this moment reach 99.99% or more.Add
The food-grade carbon-dioxide product or industrial grade carbon-dioxide that work is completed, carry out storage conveying, satisfaction makes by storage tank respectively
Use demand.In this way, by no longer containing carbon dioxide substantially in the device treated flue gas, therefore air will not be caused again
Pollution, the requirement of maximum discharge industry reduction of greenhouse gas discharge, effective protection environment improve the recycling of carbon dioxide, avoid causing
The wasting of resources.Cement kiln flue gas collecting carbonic anhydride treater described in the utility model, it is simple in structure, it can be effective
Carbon dioxide in the flue gas generated when working cement kiln is effectively recycled, and reduces carbon dioxide and other pollutants to big
The discharge of gas meets the requirement of maximum discharge industry reduction of greenhouse gas discharge, finally reduces pollution from exhaust emission, realizes environment-friendly function.
Description of the drawings
Brief description is made to the content expressed by each attached drawing of this specification and the label in figure below：
Fig. 1 is the structural schematic diagram of cement kiln flue gas collecting carbonic anhydride treater described in the utility model；
Fig. 2 is the food-grade titanium dioxide of cement kiln flue gas collecting carbonic anhydride treater described in the utility model
Carbon finished product prepares the structural schematic diagram of component；
Fig. 3 is the technical grade titanium dioxide of cement kiln flue gas collecting carbonic anhydride treater described in the utility model
Carbon finished product prepares the structural schematic diagram of component；
Fig. 4 is regenerator and the connection of cement kiln flue gas collecting carbonic anhydride treater described in the utility model
The partial enlargement structural representation of the connecting portion of pipeline III；
In attached drawing label for：1, flue gas pretreatment component；2, carbon dioxide absorption desorbs component；3, carbon dioxide compression is dry
Dry component；4, carbon dioxide finished product prepares component；5, desulfurization water scrubber；6, connecting line I；7, connecting pipe II；8, absorption tower；
9, regenerator；10, connecting pipe III；11, compressor；12, desulfurization bed；13, drying bed；14, connecting pipe IV；15, food-grade
Carbon dioxide finished product prepares component；16, industrial grade carbon-dioxide finished product prepares component；17, component adsorbent bed；18, food-grade essence
Evaporate tower；19, food-grade carbon-dioxide finished product storage tank；20, technical grade rectifying column；21, industrial grade carbon-dioxide finished product storage tank；22、
Heat exchanger；26, cement kiln；23, water cooler；24, separator；25, clarifier；26, air-introduced machine；100, slide valve I；200, lock
Plate valve II.
Specific implementation mode
Below against attached drawing, by the description of the embodiment, for example involved to specific embodiment of the present utility model
Mutual alignment and connection relation, the effect of each section and operation principle between the shape of each component, construction, each section etc. make into
The detailed description of one step：
As shown in attached drawing 1- attached drawings 3, the utility model is a kind of cement kiln flue gas collecting carbonic anhydride treater,
The cement kiln flue gas collecting carbonic anhydride treater includes flue gas pretreatment component 1, carbon dioxide absorption desorption
Component 2, carbon dioxide compression drying part 3, carbon dioxide finished product prepare component 4, and the flue gas pretreatment component 1 is set as
The structure of cooling and denitration desulfurization process can will be carried out in cement kiln flue gas, carbon dioxide absorption desorption component 2 is arranged to
It is enough to be absorbed by compound lye by the carbon dioxide in treated the flue gas of flue gas pretreatment component 1 and be parsed into height
The structure of the carbon dioxide gas of concentration, carbon dioxide compression drying part 3 are configured to carbon dioxide absorption desorption portion
The lye drying and dehydrating that part 2 transfers out forms the structure of dry gas, and carbon dioxide finished product prepares component 4 and is configured to two
The dry gas that carbonoxide compression drying component 3 exports is prepared into the knot of food-grade carbon-dioxide product or industrial grade carbon-dioxide
Structure.Above structure is first handled flue gas in the flue gas given off to cement kiln production before being discharged to air, and above-mentioned
The processing unit of structure is to trap purification technique by carbon, handles the flue gas generated from cement kiln, the flue gas
By the denitration of quality coal in cement kiln systems itself, desulfurization, the processing such as gather dust, (especially CO2's contains each component content in flue gas
Amount) it can hold because of raw material mill, grind and stop slightly fluctuating, wherein carbonated 18.0~22.32%, nitrogen 60.82~60.9%, oxygen
Gas 8.36~9.0%, moisture 8.5~10.1%, remaining is carbon monoxide, nitrogen oxides, sulfur dioxide, and dust etc. is less than country
The impurity that discharge standard value requires.And the CO2 trapping techniques that the utility model uses, raw material of the cement kiln flue gas as the present apparatus
Gas can produce the food-grade carbon-dioxide production different with industrial two kinds of quality requirements of grade carbon-dioxide simultaneously using two-step method
Product.The first step is to use chemical-solvent method gas concentration lwevel from 18% or so concentrate to 89% or more, and second step is using suction
Attached rectification method is purified to 99.9% or more.Above-mentioned apparatus, by flue gas pretreatment component 1 will be carried out in cement kiln flue gas cooling and
Denitration desulfurization process, then desorbing component 2 by carbon dioxide absorption will pass through in treated the flue gas of flue gas pretreatment component 1
Carbon dioxide absorbed by compound lye, formed carbon dioxide gas so that flue gas pass through processing formed titanium dioxide
The concentration of the CO2 of carbon gas reaches 89% or more, and carbon dioxide gas is then transported to carbon dioxide compression drying part again
3, carbon dioxide compression drying part 3 can desorb the lye drying and dehydrating that component 2 transfers out to carbon dioxide absorption, be formed dry
The concentration of pathogenic dryness body, the CO2 of dry gas reaches 95% or more, and then preparing component 4 using carbon dioxide finished product is handled, and two
Carbonoxide finished product, which prepares component 4, to be prepared into food-grade dioxy by the dry gas that carbon dioxide compression drying part 3 exports
Change carbon products or industrial grade carbon-dioxide, the concentration of the CO2 of carbon dioxide gas at this moment reach 99.99% or more.It processes
At food-grade carbon-dioxide product or industrial grade carbon-dioxide, storage conveying is carried out by storage tank respectively, meets and uses need
It asks.In this way, no longer containing carbon dioxide in treated flue gas substantially, therefore air will not be polluted again, maximum discharge
The requirement of industry reduction of greenhouse gas discharge, effective protection environment improve the recycling of carbon dioxide, avoid resulting in waste of resources.This
Cement kiln flue gas collecting carbonic anhydride treater described in utility model, it is simple in structure, it can be effectively to cement firer
As when the flue gas that generates in carbon dioxide effectively recycled, reduce carbon dioxide and discharge of other pollutants to air,
Meet the requirement of maximum discharge industry reduction of greenhouse gas discharge, finally reduce pollution from exhaust emission, realizes environment-friendly function.
The flue gas pretreatment component 1 includes desulfurization water scrubber 5, and desulfurization water scrubber 5 passes through air-introduced machine and connecting line I
6 are connected to the flue gas emission mouth of cement kiln 26, storage filler and desulfuration solution in desulfurization water scrubber 5, what connecting line I 6 conveyed
When flue gas is by desulfurization water scrubber 5, the desulfuration solution in desulfurization water scrubber 5 be configured to by flue gas sulfur dioxide,
The structure that nitre and nitrogen dioxide are absorbed, desulfurization water scrubber 5 desorb component 2 by connecting pipe II 7 and carbon dioxide absorption
Connection.Above structure, cement plant flue gas enter from water scrubber lower part in tower under the action of air-introduced machine 26, and flue gas cools down rapidly,
The micro dust carried secretly in gas simultaneously is cleaned by solvent, into after desulfurization water scrubber, with the desulfuration solution flowed from the top to the bottom
Counter current contacting, sulfur dioxide and nitrogen dioxide periodically guide to the processing of alkali neutralization system by solvent absorption.Flue gas is by washing and takes off
After sulphur, flue gas is purified, and from desulfurization water scrubber out, is sent to carbon dioxide absorption desorption component 2 by air-introduced machine and is inhaled
Receive desorption processing.Above structure can effectively be handled flue gas, it is ensured that following process precision.
The carbon dioxide absorption desorption component 2 includes absorption tower 8, regenerator 9, and absorption tower 8 is connected to regenerator 9,
Desulfurization water scrubber 5 is connected to by connecting pipe II 7 with absorption tower 8, and storage filler and compound lye are (also referred to as " poor in absorption tower 8
Liquid ", poor carbonated compound lye), the interior storage filler of regenerator 9 and compound lye (also referred to as " rich solution ", are rich in titanium dioxide
The compound lye of carbon), the regenerator 9 is connected to by connecting pipe III 10 with carbon dioxide compression drying part 3.By de-
When the flue gas of sulphur water scrubber 5 is by absorption tower 8, the compound lye in absorption tower 8 is configured to the carbon dioxide in gas
The structure adsorbed, the compound lye (i.e. " rich solution ") for absorbing carbon dioxide are configured to enter regeneration from absorption tower 8
The structure of tower 9, when the compound lye (i.e. " rich solution ") of absorbing carbon dioxide passes through regenerator 9, tower reactor steam is configured to pair
The structure that the compound lye (i.e. " rich solution ") of absorbing carbon dioxide is heated, the compound lye of absorbing carbon dioxide is by regeneration
When tower 9, the carbon dioxide in the compound lye (i.e. " rich solution ") of absorbing carbon dioxide is arranged to desorb from compound lye
Form gaseous carbon dioxide raw material mix.Compound lye (i.e. " lean solution ") after carbon dioxide parsing, and can return in absorption tower 8
It is recycled.Above structure, is handled by flue gas pretreatment component 1 and the flue gas without dust and sulfide is introduced into suction
Receive tower in, in upward flow process, the composite alkali liquor that the carbon dioxide in gaseous mixture is flowed downward, by with absorption
The lye pump of tower connection is handled by poor rich liquid heat exchanger, is then sent through in regenerator.It is substantially free of the absorption tail gas of carbon dioxide
It draws from tower top is absorbed, is emptied after cooling water dividing.And the lye come out from absorption tower bottom, it is pumped out by hydraulic pump, one
Divide about 80% flow to pass through poor rich liquid heat exchanger, is sent to the top of regenerator.The rich solution of about 20% flow of another part without
Poor rich liquid heat exchanger heats, and is immediately directed against regeneration overhead cooling.Two strands of rich solutions for entering regenerator are flowing down through packing layer
In the process, the tower reactor steam entered from below heats, and the carbon dioxide in compound lye is desorbed from solution, from tower top
Outside enrichment discharge tower.The low lye for being substantially free of carbon dioxide of tower is flowed to, into cooling down in poor rich liquid heat exchanger, by lean pump
It sends out, after water cooler cools down, then is sent to the recycling of absorption tower top.
The carbon dioxide compression drying part 3 includes compressor 11, desulfurization bed 12, drying bed 13, with carbon dioxide
The connecting pipe III 10 that compression drying component 3 is connected to is connected to compressor 11, and compressor 11 is connected to desulfurization bed 12, desulfurization bed 12
It is connected to drying bed 13, drying bed 13 prepares component 4 with carbon dioxide finished product by connecting pipe IV 14 and is connected to.The dioxy
The compressor 11 for changing carbon pressure contracting drying part 3 is configured to carry out the gaseous carbon dioxide raw material for entering compressor 11 successively
Supercharging, cooling water dividing, steady pressure treatment structure, the solid desulfurating agent in desulfurization bed 12 is configured to into crossing desulfurization bed 12
The gaseous sulphide that gaseous carbon dioxide raw material is merely able to carries out the structure of purified treatment, and the solid drier in drying bed 13 is set
The gaseous carbon dioxide raw material by drying bed 13 can be carried out the structure of dehydration and drying processing by being set to.Above structure passes through
After carbon dioxide absorption desorbs the absorption and desorption of component 2, CO2 concentration is increased to 89% or more by 18% in flue gas, gaseous state
The CO 2 raw material gas of 89% (aqueous) initially enters compressor boost, and desulfurization bed is entered after cooling water dividing, voltage stabilizing, with admittedly
Body desulfurizing agent purifies gaseous sulphide, enters back into drying bed, is thoroughly dehydrated with solid drier.Deviate from the air-flow of sulfide and water
Two strands are separated into, one prepares component 15 into food-grade carbon-dioxide finished product, completes the preparation of 2 product of food-class CO, another
Stock enters industrial grade carbon-dioxide finished product and prepares component 16, completes the preparation system of technical grade CO2 products.Above-mentioned desulfurization bed is done
Dry bed is designed to the bed body of two same volumes, the desulfurizing agent and drier of built-in equivalent, two drying beds, desulfurization bed difference
Alternate operation, it is ensured that production is carried out continuously, and improves carbon dioxide finished product production efficiency.
The carbon dioxide finished product prepares component 4 and prepares component 15 and technical grade two including food-grade carbon-dioxide finished product
Carbonoxide finished product prepares component 16, and it includes component adsorbent bed 17, food-grade rectifying that food-grade carbon-dioxide finished product, which prepares component 15,
Tower 18, component adsorbent bed 17 are connected to connecting pipe IV 14, and component adsorbent bed 17 is connected to food-grade rectifying column 18 simultaneously, food
Grade rectifying column 18 is connected to food-grade carbon-dioxide finished product storage tank 19 simultaneously, and the industrial grade carbon-dioxide finished product prepares component
16 include technical grade rectifying column 20, and technical grade rectifying column 20 is connected to connecting pipe IV 14, technical grade rectifying column 20 while and work
Industry grade carbon-dioxide finished product storage tank 21 is connected to.(a concentration of 95.5% or more) of CO2 enters processing to gas after compression drying
The food-grade carbon-dioxide finished product of 2 product of food-class CO prepares component 15, is further inhaled first with solid by component adsorbent bed
The impurity such as attached dose of removing phosphorus, arsenic, mercury, nitric oxide；It is frozen machine cooling liquefaction again, into food-grade rectifying column 18, light component
Oxygen, nitrogen, carbon monoxide, argon gas are all removed from rectifying column tower top, and bottom of tower obtains the food-grade that purity is 99.99% or more
Carbon dioxide product, then in storage to food-grade carbon-dioxide finished product storage tank 19, the manufacture of entrucking at any time.And pass through compression drying
(a concentration of 95.5% or more) of CO2 enters the industrial grade carbon-dioxide finished product preparation portion of processing industry grade CO2 products to gas afterwards
Part 16 requires no adsorbent bed purification, is directly entered liquefier and is frozen machine cooling liquefaction, enters back into technical grade rectifying column 20,
Light component oxygen, nitrogen, argon gas are all removed from rectifying column tower top, and bottom of tower obtains the technical grade dioxy that purity is 99.9% or more
Change carbon products, in then storage to industrial grade carbon-dioxide finished product storage tank, the manufacture of entrucking at any time.
The connecting line I 6 is connected to 5 lower end of desulfurization water scrubber, the desulfuration solution setting stored in desulfurization water scrubber 5
For the structure that can be flowed from 5 upper end of desulfurization water scrubber to 5 lower end of desulfurization water scrubber, described II 7 one end of connecting pipe with it is de-
5 upper-end part of driving of sulphur water scrubber is connected to, and the absorption tower 8 that II 7 other end of connecting pipe desorbs component 2 with carbon dioxide absorption is connected to.
The connecting pipe II 7 is connected to 8 lower end of absorption tower, and the compound lye placed in absorption tower 8 is configured to from absorption tower 8
The structure that upper end is flowed to 8 lower end of absorption tower, is arranged heat exchanger 22 between absorption tower 8 and regenerator 9, desulfurization water scrubber 5 absorbs
Packing layer is respectively set in tower 8, regenerator 9, the tower reactor steam in regenerator 9 is arranged in 9 bottom of regenerator, 9 upper end of regenerator
It is connected to carbon dioxide compression drying part 3 by connecting pipe III 10.
The food-grade carbon-dioxide finished product prepares component 15 and industrial grade carbon-dioxide finished product prepares component 16 as simultaneously
Connection setting, prepared by food-grade carbon-dioxide finished product sets in the connecting pipe between component 15 and carbon dioxide compression drying part 3
It is equipped with slide valve I 100, industrial grade carbon-dioxide finished product prepares the connection between component 16 and carbon dioxide compression drying part 3
Slide valve II 200 is also equipped on pipeline, when slide valve I 100 is closed and slide valve II 200 is opened, cement kiln flue gas dioxy
Change carbon trapping treater to be set as that the structure of technical grade carbon dioxide product can only be produced；When slide valve I 100 open and
When slide valve II 200 is closed, the cement kiln flue gas collecting carbonic anhydride treater is set as that food can only be produced
The structure of grade carbon-dioxide product；When slide valve I 100 and slide valve II 200 open simultaneously, cement kiln flue gas carbon dioxide is caught
Collection treater is configured to produce the structure of technical grade and food-grade carbon-dioxide product simultaneously.
As shown in Fig. 4, water cooler 23, separator 24, net is set between the regenerator 9 and connecting pipe III 10
Change device 25,23 one end of water cooler is connect with 9 upper end of regenerator, and 24 one end of separator is connected to 23 other end of water cooler, point
It is connected to 25 one end of clarifier from 24 other end of device, 25 other end of clarifier is connected to by connecting pipe III 10 with compressor 11.
Above structure, the carbon dioxide gas of regenerator top out cool to 40 DEG C or so by water cooler, are separated into separator
Condensed water, then gas is after clarifier purifies, after entering back into the further dehydration of condenser, as gaseous carbon dioxide product
(a concentration of 89% or more) of CO2 is sent in subsequent carbon dioxide compression drying part 3 and processing is dried and dehydrated gas.
Cement kiln flue gas collecting carbonic anhydride treater described in the utility model is discharged being produced to cement kiln
The flue gas gone out is first handled flue gas before being discharged to air, and the processing unit of above structure, be trapped by carbon it is pure
Change technology handles the flue gas generated from cement kiln, and the flue gas is by the denitration of quality coal in cement kiln systems itself, de-
Sulphur, the processing such as gather dust, each component content (the especially content of CO2) can be held because of raw material mill, grind and stop slightly fluctuating in flue gas,
Middle carbonated 18.0~22.32%, nitrogen 60.82~60.9%, oxygen 8.36~9.0%, moisture 8.5~10.1%,
Remaining is carbon monoxide, nitrogen oxides, sulfur dioxide, and dust etc. is less than the impurity that discharging standards value requires.And this practicality
The CO2 trapping techniques of novel use, unstrpped gas of the cement kiln flue gas as the present apparatus can produce food simultaneously using two-step method
The grade carbon dioxide product different with industrial two kinds of quality requirements of grade carbon-dioxide.The first step is using chemical-solvent method two
Concentration of carbon is aoxidized from 18% or so concentrate to 89% or more, second step is purified to 99.9% or more using absorption distillation method.It is above-mentioned
Collecting carbonic anhydride purification devices will carry out cooling and denitration desulfurization process by flue gas pretreatment component 1 in cement kiln flue gas,
Then desorbing component 2 by carbon dioxide absorption will lead to by the carbon dioxide in treated the flue gas of flue gas pretreatment component 1
It crosses compound lye to be absorbed, forms carbon dioxide gas so that the CO2's of carbon dioxide gas of the flue gas by processing formation
Concentration reaches 89% or more, and carbon dioxide gas is then transported to carbon dioxide compression drying part 3, carbon dioxide compression again
Drying part 3 can desorb the lye drying and dehydrating that component 2 transfers out to carbon dioxide absorption, form dry gas, dry gas
The concentration of the CO2 of body reaches 95% or more, and then preparing component 4 using carbon dioxide finished product is handled, carbon dioxide finished product system
The dry gas that carbon dioxide compression drying part 3 exports can be prepared into food-grade carbon-dioxide product or work by standby component 4
The concentration of industry grade carbon-dioxide, the CO2 of carbon dioxide gas at this moment reaches 99.99% or more.The food-grade two machined
Carbon products or industrial grade carbon-dioxide are aoxidized, storage conveying is carried out by storage tank respectively, is satisfied the use demand.In this way, by
Substantially no longer contain carbon dioxide in the flue gas of processing, therefore air will not be polluted again, maximum discharge industry greenhouse gases
Emission reduction requirement, effective protection environment improve the recycling of carbon dioxide, avoid resulting in waste of resources.It is described in the utility model
Cement kiln flue gas collecting carbonic anhydride treater, simple in structure, the cigarette generated when can effectively work cement kiln
Carbon dioxide in gas is effectively recycled, and is reduced carbon dioxide and discharge of other pollutants to air, is met maximum discharge row
The requirement of industry reduction of greenhouse gas discharge, finally reduces pollution from exhaust emission, realizes environment-friendly function.
Illustrative description is carried out to the utility model above in conjunction with attached drawing, it is clear that the utility model concrete implementation is simultaneously
It is not limited by aforesaid way, if the various improvement of the methodology and technical solution progress of the utility model are used, or
It is not improved that the design of the utility model and technical solution are directly applied into other occasions, in the protection of the utility model
In range.
Claims (8)
1. a kind of cement kiln flue gas collecting carbonic anhydride treater, it is characterised in that：The cement kiln flue gas dioxy
It includes flue gas pretreatment component (1), carbon dioxide absorption desorption component (2), pressurized carbon dioxide to change carbon trapping treater
Contracting drying part (3), carbon dioxide finished product prepare component (4), and the flue gas pretreatment component (1) is configured to cement
The structure of cooling and denitration desulfurization process is carried out in kiln flue gas, carbon dioxide absorption desorption component (2) is configured to pass through
Carbon dioxide in flue gas pretreatment component (1) treated flue gas is absorbed by compound lye and is parsed into high concentration
The structure of carbon dioxide gas, carbon dioxide compression drying part (3) are configured to carbon dioxide absorption desorption component (2)
The lye drying and dehydrating transferred out forms the structure of dry gas, and carbon dioxide finished product prepares component (4) and is configured to two
The dry gas of carbonoxide compression drying component (3) output is prepared into food-grade carbon-dioxide product or industrial grade carbon-dioxide
Structure；
The carbon dioxide compression drying part (3) includes compressor (11), desulfurization bed (12), drying bed (13), with dioxy
Change the connecting pipe III (10) that carbon pressure contracting drying part (3) is connected to be connected to compressor (11), compressor (11) and desulfurization bed
(12) be connected to, desulfurization bed (12) is connected to drying bed (13), drying bed (13) by connecting pipe IV (14) and carbon dioxide at
Product prepare component (4) connection；
It includes that food-grade carbon-dioxide finished product prepares component (15) and technical grade two that the carbon dioxide finished product, which prepares component (4),
Carbonoxide finished product prepares component (16), and it includes component adsorbent bed (17), food that food-grade carbon-dioxide finished product, which prepares component (15),
Grade rectifying column (18), component adsorbent bed (17) is connected to connecting pipe IV (14), component adsorbent bed (17) while smart with food-grade
Tower (18) connection is evaporated, food-grade rectifying column (18) while being connected to food-grade carbon-dioxide finished product storage tank (19), the industry
It includes technical grade rectifying column (20), technical grade rectifying column (20) and connecting pipe IV that grade carbon-dioxide finished product, which prepares component (16),
(14) it is connected to, technical grade rectifying column (20) while being connected to industrial grade carbon-dioxide finished product storage tank (21).
2. cement kiln flue gas collecting carbonic anhydride treater according to claim 1, it is characterised in that：Described
Flue gas pretreatment component (1) includes desulfurization water scrubber (5), and desulfurization water scrubber (5) passes through air-introduced machine and connecting line I (6) and water
The flue gas emission mouth of stall is connected to, storage filler and desulfuration solution in desulfurization water scrubber (5), the flue gas of connecting line I (6) conveying
When interior by desulfurization water scrubber (5), the desulfuration solution in desulfurization water scrubber (5) be configured to by flue gas sulfur dioxide and
The structure that nitrogen dioxide is absorbed, desulfurization water scrubber (5) desorb component by connecting pipe II (7) and carbon dioxide absorption
(2) it connects.
3. cement kiln flue gas collecting carbonic anhydride treater according to claim 2, it is characterised in that：Titanium dioxide
It includes absorption tower (8), regenerator (9) that carbon absorption, which desorbs component (2), and absorption tower (8) are connected to regenerator (9), desulfurization water scrubber
(5) it is connected to absorption tower (8) by connecting pipe II (7), storage filler and compound lye in absorption tower (8), in regenerator (9)
Storage filler and compound lye, regenerator (9) are connected to by connecting pipe III (10) with carbon dioxide compression drying part (3).
4. cement kiln flue gas collecting carbonic anhydride treater according to claim 3, it is characterised in that：By de-
When the flue gas of sulphur water scrubber (5) is by absorption tower (8), the compound lye in absorption tower (8) is configured to two in gas
The structure that carbonoxide is adsorbed, the compound lye of absorbing carbon dioxide are configured to enter regenerator (9) from absorption tower (8)
Structure, when the compound lye of absorbing carbon dioxide passes through regenerator (9), tower reactor steam is configured to absorbing carbon dioxide
The structure that is heated of compound lye, when the compound lye of absorbing carbon dioxide passes through regenerator (9), absorbing carbon dioxide
Carbon dioxide in compound lye is arranged to desorb to form gaseous carbon dioxide raw material mix from compound lye.
5. cement kiln flue gas collecting carbonic anhydride treater according to claim 2, it is characterised in that：Described
Connecting line I (6) is connected to desulfurization water scrubber (5) lower end, the desulfuration solution stored in desulfurization water scrubber (5) be configured to from
The structure that desulfurization water scrubber (5) upper end is flowed to desulfurization water scrubber (5) lower end, described connecting pipe II (7) one end and desulfurization
Water scrubber (5) upper-end part of driving is connected to, the absorption tower (8) of connecting pipe II (7) other end and carbon dioxide absorption desorption component (2)
Connection.
6. cement kiln flue gas collecting carbonic anhydride treater according to claim 3, it is characterised in that：Connecting tube
Road II (7) is connected to absorption tower (8) lower end, and the compound lye placed in absorption tower (8) is configured to from absorption tower (8) upper end
The structure flowed to absorption tower (8) lower end, is arranged heat exchanger (22), desulfurization water scrubber between absorption tower (8) and regenerator (9)
(5), absorption tower (8), packing layer is respectively set in regenerator (9), the tower reactor steam in regenerator (9) is arranged in regenerator (9)
Bottom, regenerator (9) upper end are connected to by connecting pipe III (10) with carbon dioxide compression drying part (3).
7. cement kiln flue gas collecting carbonic anhydride treater according to claim 1, it is characterised in that：Described
Food-grade carbon-dioxide finished product prepare component (15) and industrial grade carbon-dioxide finished product to prepare component (16) be to be arranged in parallel, food
Grade carbon-dioxide finished product prepares and is provided with flashboard in the connecting pipe between component (15) and carbon dioxide compression drying part (3)
Valve I (100), industrial grade carbon-dioxide finished product prepare the connecting tube between component (16) and carbon dioxide compression drying part (3)
Slide valve II (200) is also equipped on road, when slide valve I (100) is closed and slide valve II (200) is opened, the cement
Kiln smoke carbon dioxide capture treater is set as that the structure of technical grade carbon dioxide product can only be produced；Work as slide valve
I (100) open and slide valve II (200) close when, the cement kiln flue gas collecting carbonic anhydride treater setting
For the structure of food-grade carbon-dioxide product can only be produced；When slide valve I (100) and slide valve II (200) open simultaneously, institute
The cement kiln flue gas collecting carbonic anhydride treater stated is configured to produce technical grade and food-grade titanium dioxide simultaneously
The structure of carbon products.
8. cement kiln flue gas collecting carbonic anhydride treater according to claim 1, it is characterised in that：Described
The compressor (11) of carbon dioxide compression drying part (3) is configured to former to the gaseous carbon dioxide for entering compressor (11)
Material is pressurized successively, the structure of cooling water dividing, steady pressure treatment, the solid desulfurating agent in desulfurization bed (12) be configured to into
The structure that gaseous sulphide in the gaseous carbon dioxide raw material of desulfurization bed (12) carries out purified treatment is crossed, in drying bed (13)
Solid drier is configured to carry out the gaseous carbon dioxide raw material by drying bed (13) structure of dehydration and drying processing.
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| CN201721518292.3U CN207951088U (en) | 2017-11-15 | 2017-11-15 | Cement kiln flue gas collecting carbonic anhydride treater |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111514694A (en) * | 2020-04-29 | 2020-08-11 | 中国建材国际工程集团有限公司 | Glass flue gas recovery method |
| CN114183695A (en) * | 2021-12-14 | 2022-03-15 | 特斯联科技集团有限公司 | Cement carbon absorption accounting method |
| CN116764381A (en) * | 2023-06-14 | 2023-09-19 | 临涣焦化股份有限公司 | CO trapping device for coke oven flue gas 2 Apparatus and method of (a) |
-
2017
- 2017-11-15 CN CN201721518292.3U patent/CN207951088U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111514694A (en) * | 2020-04-29 | 2020-08-11 | 中国建材国际工程集团有限公司 | Glass flue gas recovery method |
| CN114183695A (en) * | 2021-12-14 | 2022-03-15 | 特斯联科技集团有限公司 | Cement carbon absorption accounting method |
| CN116764381A (en) * | 2023-06-14 | 2023-09-19 | 临涣焦化股份有限公司 | CO trapping device for coke oven flue gas 2 Apparatus and method of (a) |
| CN116764381B (en) * | 2023-06-14 | 2024-01-23 | 临涣焦化股份有限公司 | CO trapping device for coke oven flue gas 2 Apparatus and method of (a) |
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Address after: 241000 South Jiuhua Road 1017, Yijiang District, Wuhu City, Anhui Province Patentee after: Anhui Conch Building Materials Design and Research Institute Co., Ltd. Address before: 241000 South Jiuhua Road 1017, Yijiang District, Wuhu City, Anhui Province Patentee before: Anhui Conch Design & Research Institute of Building Materials |