CN107366926A - A kind of flue gas for wet desulphurization takes off white system and method - Google Patents
A kind of flue gas for wet desulphurization takes off white system and method Download PDFInfo
- Publication number
- CN107366926A CN107366926A CN201710589559.6A CN201710589559A CN107366926A CN 107366926 A CN107366926 A CN 107366926A CN 201710589559 A CN201710589559 A CN 201710589559A CN 107366926 A CN107366926 A CN 107366926A
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- Prior art keywords
- cigarette
- net
- flue gas
- former cigarette
- former
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Classifications
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/02—Arrangements of devices for treating smoke or fumes of purifiers, e.g. for removing noxious material
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
- B01D2258/0283—Flue gases
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Treating Waste Gases (AREA)
Abstract
The invention discloses a kind of flue gas for wet desulphurization to take off white system and method, system includes desulfurizing tower and chimney, the desulfurizing tower has former cigarette entrance and net cigarettes outlet, the former cigarette enters desulfurizing tower by the former cigarette entrance, via net cigarette is become after the desulfurizing tower desulfurization chimney is escaped and enter from the net cigarettes outlet, also set up the cooler of the former cigarette cooling in front of the former cigarette entrance, it is additionally provided with the heater of the net cigarette heating between the chimney and the net cigarettes outlet, the cooler adjusts the temperature of the former cigarette into the former cigarette entrance according to the temperature of the net cigarette needs of net cigarettes outlet discharge.The present invention has that system architecture is simple, only needs the smaller temperature of lifting to can be achieved with the de- white effect of flue gas and the advantages of with energy-saving and emission-reduction.
Description
Technical field
The invention belongs to Wet Flue Gas Desulfurization Technique field, more particularly to a kind of flue gas for wet desulphurization to take off white system and side
Method.
Background technology
Substantial amounts of flue gas can be produced in the production processes such as coal fired power generation, chemical industry, steel, weaving, papermaking and mining, for protection
Environment is not contaminated, and flue gas needs to carry out desulfurization process before discharge.At present, combustion is generally handled using wet desulfurizing process
Flue gas caused by coal.Wet desulphurization is due to being gas liquid reaction, and its desulphurization reaction speed is fast, efficiency high, sulfur-removing additives utilization rate
Height, when such as making desulfurizing agent with lime, as Ca/S=1.03, you can reach more than 90% desulfurization degree.
Flue gas after desulfurization is saturated flue gas, it appears that discharge is " white cigarette ", to meet the vision of emission request and people
It is attractive in appearance, it is also necessary to " flue gas is de- white ", but existing flue gas takes off whitening method, and system architecture is complicated, needs, energy larger in lifting temperature
Consumption is high, is unfavorable for energy-saving and emission-reduction.
The content of the invention
It is de- white that the technical problems to be solved by the invention are to provide a kind of flue gas for wet desulphurization
System, the system have the advantages of simple in construction, lifting temperature is small, and the heat of condensation can be comprehensively utilized, reached
While de- white, the energy can be saved, to overcome the shortcomings of the prior art.
In order to solve the above technical problems, the present invention adopts the following technical scheme that：
A kind of flue gas for wet desulphurization takes off white system, and it includes desulfurizing tower and chimney, and the desulfurizing tower has former cigarette
Entrance and net cigarettes outlet, the former cigarette enter desulfurizing tower by the former cigarette entrance, via becoming net cigarette after the desulfurizing tower desulfurization
The chimney is escaped and enter from the net cigarettes outlet, it is characterised in that：Also set up in front of the former cigarette entrance by the former cigarette
The cooler of cooling, it is additionally provided with the heater of the net cigarette heating, the cooling between the chimney and the net cigarettes outlet
Device adjusts the temperature of the former cigarette into the former cigarette entrance according to the temperature of the net cigarette needs of net cigarettes outlet discharge.
In further improvement of the present invention, precooler is additionally provided with front of cooler.
In another embodiment of the invention, the heater and precooler are substituted for flue gas heat-exchange unit, the flue gas
Heat exchanger is cooled the former cigarette and the net cigarette heat exchange, and utilize original in advance before former cigarette is entered into the cooler
The heat of cigarette heats up to net cigarette.
In the embodiment of the present invention, the cooler is water cooler, and the water cooler utilizes power plant
Condensed water or heating are cooled with water to the former cigarette for entering the former cigarette entrance.
The present invention uses above-mentioned technical proposal, by being lowered into the former cigarette temperature of desulfurizing tower former cigarette entrance, can reduce
The temperature of the saturated flue gas of the net cigarettes outlet of desulfurizing tower, de- white purpose can just seldom be reached to the heating of net cigarette so as to realize,
Reach energy-conservation purpose.In addition, by setting a flue gas heat-exchange unit before cooler, the flue gas heat-exchange unit is precooled using former cigarette
The heat of release enters trip temperature lifting to net cigarette, not extra consumed energy, further with energy-conserving action.In addition, by using
The condensed water of power plant or heating are directly cooled with water or other process waters to former cigarette so that the heat of former cigarette is fully reclaimed
Utilize, realize the comprehensive utilization to energy.
In addition, the present invention, which also provides a kind of flue gas for wet desulphurization, takes off whitening method, former cigarette is first subjected to desulfurization process,
The net cigarette after desulfurization process is passed through in chimney again, before net cigarette is passed through the chimney, first net cigarette heated up to reach
De- white effect, it is characterised in that：The former cigarette first carries out cooling processing before entering desulfurizing tower, the former cigarette enter desulfurizing tower it
It is preceding first to carry out cooling to 60-100 DEG C so that the net cigarette temperature control after desulfurization process is at 35 DEG C -45 DEG C.
In further improvement of the present invention, the cooling processing before the former cigarette enters desulfurizing tower is also dropped in advance before
Temperature.
In a preferred embodiment of the invention, the pre- cooling of the former cigarette and the heating of the net cigarette are changed by same flue gas
Hot device is completed.
In a preferred embodiment of the invention, the cooling processing before the former cigarette enters desulfurizing tower is complete by water cooler
Into the water cooler is carried out at cooling using the condensed water or heating of power plant with water to the former cigarette for entering the desulfurizing tower
Reason.
Using above-mentioned technical proposal, the present invention has that system architecture is simple, only needs the smaller temperature of lifting to can be achieved with cigarette
Qi exhaustion white effect and there is the advantages of energy-saving and emission-reduction.
Brief description of the drawings
Fig. 1 is the system structure diagram of the present invention.
Embodiment
As shown in figure 1, the flue gas for wet desulphurization of the present invention takes off white system, including desulfurizing tower 100, chimney 200, cigarette
Gas heat exchanger 300, cooler 400.
Wherein, bottom is slurry pool 101 in desulfurizing tower 100, is spraying layer 102 above slurry pool 101, positioned at spray
The top of layer 102 is demisting layer 103.Desulfurizing tower 100 also has former cigarette entrance 105 and net cigarettes outlet 106, and former cigarette entrance 105 is located at
The sidepiece of desulfurizing tower 100 and the position between slurry pool 101 and spraying layer 102, net cigarettes outlet 106 are then located at desulfurizing tower
100 sidepiece and the top position for being located at demisting layer 103.
Former cigarette is communicated to flue gas heat-exchange unit 300 by air-introduced machine 500, and flue gas heat-exchange unit 30 is communicated to cooler 400 again, cooling
Device 400 is communicated to the former cigarette entrance 105 of desulfurizing tower 100 again.The net cigarettes outlet 106 of desulfurizing tower 100 is communicated to flue gas heat-exchange unit again
300, heat exchanger 300 is communicated to chimney 200 again.
In the present embodiment, the heating of pre- cooling and net cigarette before former cigarette enters cooler 400 is changed by a flue gas
Hot device is completed.Flue gas heat-exchange unit can also use water-borne formula heat exchanger to replace.
In the present embodiment, cooler 400 is water cooler, and the water cooler is using the condensed water of power plant to entering former cigarette
The former cigarette of entrance is cooled, and can also use heating water, or use other process waters
The working method that the flue gas for wet desulphurization of the present invention takes off white system is as follows：
Former cigarette is first introduced flue gas heat-exchange unit 300 by air-introduced machine 500, the flue gas discharged from the net cigarettes outlet 106 of desulfurizing tower 100
Also enter flue gas heat-exchange unit 300, realize the heat exchange of former cigarette and net cigarette, by heat exchange, former cigarette cools to 90-130 DEG C in advance, net cigarette from
35-45 DEG C is lifted to 80-110 DEG C, after net cigarette temperature lifting, is passed through chimney, has reached de- white effect.
Former cigarette is passed through cooler and cooled down again, be cooled to (60-100) degree Celsius again after pre- cooling, the temperature
The net cigarette temperature spent at the net cigarettes outlet according to desulfurizing tower determines.In the present system, (such as can be adjusted by adjusting cooler
It is passed through the flow of the cooling water of cooler) realize to the net cigarette temperature adjustment from the discharge of the net cigarettes outlet 106 of desulfurizing tower 100,
Need net cigarette temperature high, be reduced by the cooling effect of cooler, it is necessary to which net cigarette temperature is low, with regard to the cooling effect of increasing cooler.
It is discussed in detail by above-mentioned, it can be seen that the present invention has that system architecture is simple, only needs the smaller temperature of lifting just
It can realize that flue gas takes off white effect and has the advantages of energy-saving and emission-reduction.
But those of ordinary skill in the art is it should be appreciated that the embodiment of the above is intended merely to explanation originally
Invention, and be not used as limitation of the invention, as long as in the spirit of the present invention, to embodiment described above
Change, modification will all fall in the range of claims of the present invention.
Claims (8)
1. a kind of flue gas for wet desulphurization takes off white system, it includes desulfurizing tower and chimney, and there is the desulfurizing tower former cigarette to enter
Mouthful and net cigarettes outlet, the former cigarette desulfurizing tower is entered by the former cigarette entrance, via become after the desulfurizing tower desulfurization net cigarette from
The net cigarettes outlet escapes and enter the chimney, it is characterised in that：Also set up in front of the former cigarette entrance the former cigarette is cold
But cooler, it is additionally provided with the heater of the net cigarette heating, the cooler between the chimney and the net cigarettes outlet
The temperature of the former cigarette into the former cigarette entrance is adjusted according to the temperature of the net cigarette needs of net cigarettes outlet discharge.
2. the flue gas according to claim 1 for wet desulphurization takes off white system, it is characterised in that：In the cooler
Front is additionally provided with precooler.
3. the flue gas according to claim 2 for wet desulphurization takes off white system, it is characterised in that：The heater and pre-
Cooler is substituted for flue gas heat-exchange unit, and former cigarette is entered institute by the former cigarette and the net cigarette heat exchange by the flue gas heat-exchange unit
Cooled in advance before stating cooler, and net cigarette is heated up using the heat of former cigarette.
4. the flue gas according to claim 1 for wet desulphurization takes off white system, it is characterised in that：The cooler is water
Cooler, the water cooler are dropped using the condensed water or heating of power plant with water to the former cigarette for entering the former cigarette entrance
Temperature.
5. a kind of flue gas for wet desulphurization takes off whitening method, former cigarette is first subjected to desulfurization process, then will be net after desulfurization process
Cigarette is passed through in chimney, before net cigarette is passed through the chimney, first net cigarette is heated up to reach de- white effect, its feature exists
In：The former cigarette first carries out cooling processing and arrives 60-100 DEG C before entering desulfurizing tower so that the net cigarette temperature control after desulfurization process
System is at 35 DEG C -45 DEG C.
6. the flue gas according to claim 5 for wet desulphurization takes off whitening method, it is characterised in that：The former cigarette enters de-
Also cooled in advance before cooling processing before sulphur tower.
7. the flue gas according to claim 6 for wet desulphurization takes off whitening method, it is characterised in that：The pre- drop of the former cigarette
The heating of the gentle net cigarette is completed by same flue gas heat-exchange unit.
8. the flue gas according to claim 5 for wet desulphurization takes off whitening method, it is characterised in that：The former cigarette enters de-
Cooling processing before sulphur tower is completed by water cooler, and the water cooler is using the condensed water or heating water of power plant to entering
The former cigarette of the desulfurizing tower carries out cooling processing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710589559.6A CN107366926A (en) | 2017-07-19 | 2017-07-19 | A kind of flue gas for wet desulphurization takes off white system and method |
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|---|---|---|---|
| CN201710589559.6A CN107366926A (en) | 2017-07-19 | 2017-07-19 | A kind of flue gas for wet desulphurization takes off white system and method |
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| CN107366926A true CN107366926A (en) | 2017-11-21 |
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| CN201710589559.6A Pending CN107366926A (en) | 2017-07-19 | 2017-07-19 | A kind of flue gas for wet desulphurization takes off white system and method |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940492A (en) * | 2017-12-07 | 2018-04-20 | 天津华赛尔传热设备有限公司 | A kind of white absorption tower that disappears of heating agent circulation |
| CN108392975A (en) * | 2018-05-04 | 2018-08-14 | 无锡雪浪环境科技股份有限公司 | A kind of moisture that absorbs carries out de- white wet type fume sweetening device |
| CN108479289A (en) * | 2018-05-25 | 2018-09-04 | 南京宜热纵联节能科技有限公司 | A kind of white-smoke-removing system and technique accurately controlling corrosion |
| CN108499334A (en) * | 2017-12-07 | 2018-09-07 | 天津华赛尔传热设备有限公司 | A kind of flue gas of tower condensed exterior mixes wind and disappears white system |
| CN110013729A (en) * | 2019-03-14 | 2019-07-16 | 深圳市金迈能科技有限公司 | Exhaust treatment system |
| CN112426861A (en) * | 2020-11-11 | 2021-03-02 | 福建三宝钢铁有限公司 | Efficient desulfurization and denitrification system and method |
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| JP2011125766A (en) * | 2009-12-15 | 2011-06-30 | Ihi Corp | Exhaust gas treatment apparatus |
| CN103672936A (en) * | 2012-09-26 | 2014-03-26 | 上海伏波环保设备有限公司 | Natural circulation indirect type flue gas reheater |
| CN103968401A (en) * | 2014-04-18 | 2014-08-06 | 华北电力大学 | Dedusting, desulfuration and waste-heat utilization integrated system with low PM2.5 emission |
-
2017
- 2017-07-19 CN CN201710589559.6A patent/CN107366926A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011125766A (en) * | 2009-12-15 | 2011-06-30 | Ihi Corp | Exhaust gas treatment apparatus |
| CN103672936A (en) * | 2012-09-26 | 2014-03-26 | 上海伏波环保设备有限公司 | Natural circulation indirect type flue gas reheater |
| CN103968401A (en) * | 2014-04-18 | 2014-08-06 | 华北电力大学 | Dedusting, desulfuration and waste-heat utilization integrated system with low PM2.5 emission |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107940492A (en) * | 2017-12-07 | 2018-04-20 | 天津华赛尔传热设备有限公司 | A kind of white absorption tower that disappears of heating agent circulation |
| CN108499334A (en) * | 2017-12-07 | 2018-09-07 | 天津华赛尔传热设备有限公司 | A kind of flue gas of tower condensed exterior mixes wind and disappears white system |
| CN108392975A (en) * | 2018-05-04 | 2018-08-14 | 无锡雪浪环境科技股份有限公司 | A kind of moisture that absorbs carries out de- white wet type fume sweetening device |
| CN108479289A (en) * | 2018-05-25 | 2018-09-04 | 南京宜热纵联节能科技有限公司 | A kind of white-smoke-removing system and technique accurately controlling corrosion |
| CN110013729A (en) * | 2019-03-14 | 2019-07-16 | 深圳市金迈能科技有限公司 | Exhaust treatment system |
| CN110013729B (en) * | 2019-03-14 | 2020-06-12 | 深圳市金迈能科技有限公司 | Exhaust gas treatment system |
| CN112426861A (en) * | 2020-11-11 | 2021-03-02 | 福建三宝钢铁有限公司 | Efficient desulfurization and denitrification system and method |
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Application publication date: 20171121 |
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