CN209378782U - A kind of hybrid flue gas condensing cooling device - Google Patents
A kind of hybrid flue gas condensing cooling device Download PDFInfo
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- CN209378782U CN209378782U CN201822092976.2U CN201822092976U CN209378782U CN 209378782 U CN209378782 U CN 209378782U CN 201822092976 U CN201822092976 U CN 201822092976U CN 209378782 U CN209378782 U CN 209378782U
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- flue gas
- heat exchanger
- desulfurizing tower
- temperature rise
- cooling
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Abstract
The utility model provides a kind of hybrid flue gas condensing cooling device, including deduster, cooling heat exchanger, desulfurizing tower, temperature rise heat exchanger and chimney；The air inlet of the connection of temperature rise heat exchanger one end and deduster, the other end and desulfurizing tower connects；The gas outlet of desulfurizing tower is connect with temperature rise heat exchanger；Temperature rise heat exchanger is connect with chimney；Deduster is for being dusted flue gas；Cooling heat exchanger is for cooling down to the flue gas after dedusting；Desulfurizing tower is for carrying out spray desulfurization to the flue gas after cooling；Temperature rise heat exchanger is for heating up to the flue gas after desulfurization；Chimney is used to discharge the flue gas after heating；Using scheme provided by the utility model, so that the wet neat stress come out from wet desulphurization tower, before discharging with regard to carrying out moisture recycling and utilization, the gypsum rain discharged to air and aerosol total amount can fundamentally be effectively reduced, enable flue gas to discharge compared with dried forms, the white cigarette phenomenon of chimney breast can be mitigated significantly.
Description
Technical field
The utility model belongs to flue gas condensing falling temperature technique field, and in particular to a kind of hybrid flue gas condensing cooling dress
It sets.
Background technique
Using the large-size thermal power plant desulfurization machine set boiler tail flue gas exhaust system of wet type desulfurizing, conventional system are as follows:
The former flue gas come out from air preheater is after electrostatic precipitator dedusting, smoke exhaust fan pressurization, into flue gas heater (GGH)
, flue gas cool-down is come out inside GGH and is entered in wet desulphurization tower, is cleaned by lime white spray desulfurization inside FGD, demisting
Device dehumidifying after becoming neat stress, then comes out from FGD, enters heating in flue gas heater (GGH), reach as defined in smoke evacuation temperature
Smoke stack emission is entered after degree.
It, be by flue gas heater (GGH) Lai Jiare neat stress, after the mass dryness fraction to improve neat stress again in above system
Discharge, flue gas will back through flue gas heater (GGH)；This scheme leads to unit since the GGH operation phase is easy to appear blocking
Operation troubles, most new-built units and existing unit do not install GGH or eliminate GGH, and chimney breast smog discharge temperature only has
40-50 °C or so, flue gas moisture concentration is the range of 5-15%, and aqueous dew point temperature is higher than the flue gas and environment sky of chimney outlet
Gas mixing temperature causes chimney breast to occur water vapour " white cigarette ", and flue gas is taken moisture out of and dropped in the radius of chimney periphery very little
It falls, the desulfurization slurry and gypsum product carried in flue gas also lands therewith, is formed so-called " gypsum rain "；Chimney periphery it is highly concentrated
Degree water droplet and NOx in flue gas and small soot particle are formed together aerosol, are one of larger components of PM2.5；And arrangement cigarette
The wet type desulfurizing unit of hot-air heater (GGH), the boiler tail flue gas come out after electrostatic precipitator will enter GGH, cigarette repeatedly
Road arrangement is complicated；GGH manufacturing cost, operation and maintenance cost are also higher；And moisture still fully enters air in flue gas, row
The gypsum rain and aerosol total amount put do not decline, and only expand the radius of influence.
Based on technical problem present in above-mentioned flue gas emission, there has been no relevant solutions；Therefore compel to be essential
Seek effective scheme to solve the above problems.
Utility model content
The purpose of this utility model be in view of the above technology present in shortcoming, propose a kind of hybrid flue gas condensing
Cooling device solves the problems, such as that wet type desulfurizing unit generates gypsum rain, aerosol total amount.
The utility model provides a kind of hybrid flue gas condensing cooling device, including deduster, cooling heat exchanger, desulfurization
Tower, temperature rise heat exchanger and chimney；The air inlet of the connection of temperature rise heat exchanger one end and deduster, the other end and desulfurizing tower connects
It connects；The gas outlet of desulfurizing tower is connect with temperature rise heat exchanger；Temperature rise heat exchanger is connect with chimney；Deduster is for removing flue gas
Dirt；Cooling heat exchanger is for cooling down to the flue gas after dedusting；Desulfurizing tower is for carrying out spray desulfurization to the flue gas after cooling；
Temperature rise heat exchanger is for heating up to the flue gas after desulfurization；Chimney is used to discharge the flue gas after heating.
It further, further include slurry heat exchanger；Slurry heat exchanger is respectively communicated with the top of desulfurizing tower by circulating line
Outlet side and bottom, for being cooled down to the flue gas after spray desulfurization.
Further, slurry heat exchanger includes water inlet end and water outlet；Water inlet end is connected to seawater branch, for entering seawater
To be cooled down to the flue gas after spray desulfurization；Water outlet is used to drain the seawater after heat exchange.
It further, further include the first circuit and second servo loop；First circuit one end is connected to the water inlet end of cooling heat exchanger,
The water outlet of the other end connection temperature rise heat exchanger in the first circuit；Second servo loop one end connects the water outlet of cooling heat exchanger, the
The water inlet end of the other end connection temperature rise heat exchanger of secondary circuit；Moisturizing branch and circulating pump are connected on first circuit.
It further, further include circulation loop；Spray equipment is equipped in desulfurizing tower；Spray equipment it is horizontally disposed in
Top in desulfurizing tower；Circulation loop is set to outside desulfurizing tower, and circulation loop one end is connected to spray equipment, and circulation loop is another
Bottom in end connection desulfurizing tower.
Further, spray equipment includes multiple rows of；Multiple rows of spray equipment is arranged side by side along the vertical direction in desulfurizing tower
Top, and multiple rows of spray equipment is connected to the bottom in desulfurizing tower by circulation loop respectively, with the cigarette of Absorption Desulfurization tower bottom
Gas carries out circulated sprinkling desulfurization.
Further, deduster is electrostatic precipitator；Electrostatic precipitator includes multiple；Multiple electrostatic precipitator series connection are set
It sets, to carry out multistage dedusting to flue gas.
Further, deduster front end is additionally provided with booster fan；Booster fan enters dedusting after pressurizeing to former flue gas
Device is dusted；Enter desulfurizing tower after former flue gas ash removal after cooling heat exchanger cools down, former flue gas enters the temperature of desulfurizing tower
It is 83 °C to 88 °C.
Further, the flue gas of desulfurization tower bottom enters the temperature of outlet side at the top of desulfurizing tower after slurry heat exchanger is cooling
Degree is 42 °C to 48 °C.
Further, the flue gas of outlet side is into the temperature of chimney after temperature rise heat exchanger heats up at the top of desulfurizing tower
75 °C to 83 °C.
Using scheme provided by the utility model, so that from the wet neat stress that wet desulphurization tower comes out, before discharging
Moisture recycling and utilization are carried out, the gypsum rain discharged to air and aerosol total amount can be fundamentally effectively reduced, so that flue gas
It can mitigate significantly the white cigarette phenomenon of chimney breast to discharge compared with dried forms；And after smoke moisture decline, in chimney
Dropping down water can substantially eliminate, and require to be substantially reduced to chimney anticorrosion.
Detailed description of the invention
Utility model will be further described in detail below with reference to the attached drawings and specific embodiments.
Below with reference to attached drawing, the utility model is described in further detail:
Fig. 1 is a kind of hybrid flue gas condensing cooling device schematic diagram of the utility model.
In figure: 1, deduster；2, cooling heat exchanger；3, desulfurizing tower；4, slurry heat exchanger；5, temperature rise heat exchanger；6, chimney；
7, circulating pump；8, the first circuit；9, second servo loop.
Specific embodiment
It should be noted that in the absence of conflict, the features in the embodiments and the embodiments of the present application can phase
Mutually combination.The utility model will be described in detail below with reference to the accompanying drawings and embodiments.
As shown in Figure 1, the utility model provides a kind of hybrid flue gas condensing cooling device, it is applied to large-scale firepower hair
Motor group boiler tail flue gas exhaust system is particularly used in the recycling of flue gas water and eliminating white smoke system；Specifically include deduster 1,
Cooling heat exchanger 2, desulfurizing tower 3, temperature rise heat exchanger 5 and chimney 6；2 one end of temperature rise heat exchanger and the gas outlet of deduster 1 connect
It connects, 2 other end of temperature rise heat exchanger is connect with the air inlet of desulfurizing tower 3；The gas outlet of desulfurizing tower 3 and the air inlet of temperature rise heat exchanger 5
Mouth connection；The gas outlet of temperature rise heat exchanger 5 is connect with chimney 6；Deduster 1 is for being dusted flue gas；Cooling heat exchanger 2 is used
Cool down in the flue gas after dedusting；Desulfurizing tower 3 is for carrying out spray desulfurization to the flue gas after cooling, so that flue gas is by de-
3 inside lime white of sulphur tower spray desulfurization clean, demister dehumidifying, become neat stress after, enter back into temperature rise heat exchanger 5 heat up it is laggard
Enter to chimney 6；Temperature rise heat exchanger 5 is for heating up to the flue gas after desulfurization；Chimney 6 is used to discharge the flue gas after heating；Tool
Body, fossil-fired unit uses Wet Flue Gas Desulfurization Technique generally to remove the SO in flue gas2, gone out using the desulfurizing tower of wet desulphurization
Water vapour is in a saturated state in mouth flue gas, until chimney condenses to the cold becomes mist, is further cooled into chimney breast white
Cigarette, smoke evacuation occur emitting white cigarette phenomenon being mainly that its water vapour contained condenses into droplet to the cold, gather long serious offense in droplet
Gas is developing progressively white cigarette shape by mist in journey；Using above-mentioned flue gas condensing cooling device, and use condensation method and temperature-raising method
It combines, the vapour content in smoke evacuation can be effectively reduced, solve wet type desulfurizing unit and generate gypsum rain, aerosol total amount
The problem of, exhaust gas temperature is improved, flue gas can accommodate more water vapours, to reach the mesh for saving water and energy and eliminating white cigarette
's.
Preferably, in conjunction with above scheme, as shown in Figure 1, hybrid flue gas condensing cooling device also wraps in the present embodiment
Slurry heat exchanger 4 is included, for cooling down to flue gas；Slurry heat exchanger 4 is respectively communicated with the top of desulfurizing tower 3 by circulating line
Outlet side and bottom, for being cooled down to the flue gas after spray desulfurization；Further, slurry heat exchanger 4 include water inlet end and
Water outlet；Water inlet end is connected to seawater branch, for entering seawater to cool down to the flue gas after spray desulfurization；Water outlet is used for
Seawater after excretion heat exchange；Using the above scheme, by the setting slurries cooler on circulating line, smoke temperature is further decreased,
Reduce water capacity in flue gas；Specifically, the flue gas of 3 bottom of desulfurizing tower enters 3 top of desulfurizing tower after slurry heat exchanger 4 is cooling
The temperature of outlet side is 42 °C to 48 °C, and the temperature for preferably entering outlet side at the top of desulfurizing tower is 45 °C, specifically, by tradition
After slurries spray and demister, generally at 50 degree or so, the utility model installs additional flue-gas temperature on the circulating line of slurries
The flue-gas temperature of 3 top outlet side of desulfurizing tower effectively can be reduced to 45 DEG C from about 50 DEG C by slurry heat exchanger 4；Further, it takes off
The flue gas of 3 top outlet side of sulphur tower is 75 °C to 83 °C into the temperature of chimney after temperature rise heat exchanger heats up, and is preferably entered
The temperature of chimney is 80 °C；After the flue gas that desulfurizing tower 3 exports enters temperature rise heat exchanger 5, cigarette is entered after this temperature is risen to 80 degree
Chimney can effectively mitigate the white cigarette phenomenon of chimney breast in this way, solve wet type desulfurizing unit generation gypsum rain and aerosol is total
Amount.
Preferably, in conjunction with above scheme, as shown in Figure 1, hybrid flue gas condensing cooling device also wraps in the present embodiment
Include the first circuit 8 and second servo loop 9；First circuit, 8 one end is connected to the water inlet end of cooling heat exchanger 2, the other end in the first circuit 8
It is connected to the water outlet of temperature rise heat exchanger 5；9 one end of second servo loop connect cooling heat exchanger 2 water outlet, second servo loop 9 it is another
The water inlet end of end connection temperature rise heat exchanger 5, it is possible thereby to form circulation loop；Specifically, moisturizing branch is connected on the first circuit 8
Road and circulating pump 7；Moisturizing branch is used for constant pressure supply water, and circulating pump 7 is for providing moisturizing circulation power；Using the above scheme, may be used
To be exchanged heat by the way that the heating water in cooling heat exchanger to be drained in temperature rise heat exchanger, and the cooling in temperature rise heat exchanger
Water is drained in cooling heat exchanger and exchanges heat, and the white cigarette phenomenon for the chimney breast that can save water and energy, mitigate in this way solves wet
Formula desulfurization machine set generates gypsum rain and aerosol total amount.
Preferably, in conjunction with above scheme, as shown in Figure 1, hybrid flue gas condensing cooling device also wraps in the present embodiment
Include circulation loop；Spray equipment is equipped in desulfurizing tower 3；Spray equipment is horizontally disposed in the top in desulfurizing tower 3；Circulation
Circuit is set to outside desulfurizing tower 3, and circulation loop one end is connected to spray equipment, and the circulation loop other end is connected in desulfurizing tower
Bottom, it is possible thereby to flue gas carry out repeatedly thorough desulfurization；Further, spray equipment includes multiple rows of；Multiple rows of spray equipment
It is arranged side by side along the vertical direction in the top in desulfurizing tower 3, and multiple rows of spray equipment passes through circulation loop respectively and is connected to desulfurization
Bottom in tower 3 carries out circulated sprinkling desulfurization with the flue gas of 3 bottom of Absorption Desulfurization tower, thus improves desulfuration efficiency.
Preferably, in conjunction with above scheme, as shown in Figure 1, deduster 1 is electrostatic precipitator in the present embodiment；Electrostatic removes
Dirt device includes multiple；Multiple electrostatic precipitator are arranged in series, to carry out multistage dedusting to former flue gas, so that desulfurization effect is improved,
Dust is avoided to hinder absorption of the flue gas in desulfurizing tower.
Preferably, in conjunction with above scheme, as shown in Figure 1, in the present embodiment, between deduster 1 and cooling heat exchanger 2 also
Equipped with booster fan；Former flue gas, which is dusted after device 1 is dusted, enters booster fan pressurization, into cooling heat exchanger 2；Former cigarette
Entering desulfurizing tower 3 after gas pressurization after the cooling of cooling heat exchanger 2, the temperature that former flue gas enters desulfurizing tower 3 is 83 °C to 88 °C,
Preferably remain into desulfurizing tower temperature be 85 °C；Specifically, the former flue gas come out from air preheater passes through electrostatic precipitator
After dedusting, smoke exhaust fan pressurization, into cooling heat exchanger, temperature is reduced to 85 °C of degree to enter desulfurizing tower, cigarette by 120 °C of degree left and right
Gas water capacity reduces.
Using scheme provided by the utility model, so that from the wet neat stress that wet desulphurization tower comes out, before discharging
Moisture recycling and utilization are carried out, the gypsum rain discharged to air and aerosol total amount can be fundamentally effectively reduced, so that flue gas
It can mitigate significantly the white cigarette phenomenon of chimney breast to discharge compared with dried forms；And after smoke moisture decline, in chimney
Dropping down water can substantially eliminate, and require to be substantially reduced to chimney anticorrosion.
The above, the only preferred embodiment of the utility model, not do limit in any form to the utility model
System.Anyone skilled in the art, in the case where not departing from technical solutions of the utility model ambit, all using above-mentioned
The technology contents make many possible changes and modifications to technical solutions of the utility model, or be revised as equivalent variations etc.
Imitate embodiment.Therefore, all contents without departing from technical solutions of the utility model, the technology according to the utility model is to the above reality
Any change modification, equivalent variations and modification that example is made are applied, the protection scope of the technical program is belonged to.
Claims (10)
1. a kind of hybrid flue gas condensing cooling device, which is characterized in that including deduster, cooling heat exchanger, desulfurizing tower, heating
Heat exchanger and chimney；The connection of described temperature rise heat exchanger one end and the deduster, the other end and the desulfurizing tower into
Port connection；The gas outlet of the desulfurizing tower is connect with the temperature rise heat exchanger；The temperature rise heat exchanger is connect with the chimney；
The deduster is for being dusted flue gas；The cooling heat exchanger is for cooling down to the flue gas after dedusting；It is described de-
Sulphur tower is for carrying out spray desulfurization to the flue gas after cooling；The temperature rise heat exchanger is for heating up to the flue gas after desulfurization；
The chimney is used to discharge the flue gas after heating.
2. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that further include slurry heat exchanger；
The slurry heat exchanger is respectively communicated with the top outlet side and bottom of the desulfurizing tower by circulating line, for spray desulfurization
Flue gas afterwards is cooled down.
3. hybrid flue gas condensing cooling device according to claim 2, which is characterized in that the slurry heat exchanger includes
Water inlet end and water outlet；The water inlet end is connected to seawater branch, for enter seawater with to the flue gas after spray desulfurization into
Row cooling；The water outlet is used to drain the seawater after heat exchange.
4. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that further include the first circuit and
Secondary circuit；First circuit one end is connected to the water inlet end of the cooling heat exchanger, and the other end in first circuit is connected to institute
State the water outlet of temperature rise heat exchanger；Described second servo loop one end connects the water outlet of the cooling heat exchanger, the second servo loop
The other end be connected to the water inlet end of the temperature rise heat exchanger；Moisturizing branch and circulating pump are connected on first circuit.
5. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that further include circulation loop；Institute
It states and is equipped with spray equipment in desulfurizing tower；The spray equipment is horizontally disposed in the top in the desulfurizing tower；It is described to follow
Loop back path is set to outside the desulfurizing tower, and described circulation loop one end is connected to the spray equipment, and the circulation loop is another
End is connected to the bottom in the sulphur tower.
6. hybrid flue gas condensing cooling device according to claim 5, which is characterized in that the spray equipment includes more
Row；Multiple rows of spray equipment is arranged side by side along the vertical direction in the top in the desulfurizing tower, and multiple rows of spray dress
The bottom being connected to respectively by circulation loop in the sulphur tower is set, carries out circulated sprinkling to absorb the flue gas of the desulfurization tower bottom
Desulfurization.
7. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that the deduster removes for electrostatic
Dirt device；The electrostatic precipitator includes multiple；Multiple electrostatic precipitator are arranged in series, and are removed with carrying out multistage to the flue gas
Dirt.
8. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that the deduster front end is also set
There is booster fan；The booster fan enters the deduster after pressurizeing to former flue gas and is dusted；The original flue gas removes
Enter the desulfurizing tower after dirt after cooling heat exchanger cooling, the temperature that the original flue gas enters the desulfurizing tower is
83 °C to 88 °C.
9. hybrid flue gas condensing cooling device according to claim 2, which is characterized in that the cigarette of the desulfurization tower bottom
The temperature that gas enters outlet side at the top of the desulfurizing tower after the slurry heat exchanger is cooling is 42 °C to 48 °C.
10. hybrid flue gas condensing cooling device according to claim 1, which is characterized in that go out at the top of the desulfurizing tower
The temperature that the flue gas at gas end enters the chimney after temperature rise heat exchanger heating is 75 °C to 83 °C.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092976.2U CN209378782U (en) | 2018-12-13 | 2018-12-13 | A kind of hybrid flue gas condensing cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822092976.2U CN209378782U (en) | 2018-12-13 | 2018-12-13 | A kind of hybrid flue gas condensing cooling device |
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| Publication Number | Publication Date |
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| CN209378782U true CN209378782U (en) | 2019-09-13 |
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| CN201822092976.2U Active CN209378782U (en) | 2018-12-13 | 2018-12-13 | A kind of hybrid flue gas condensing cooling device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603499A (en) * | 2018-12-13 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of hybrid flue gas condensing cooling device |
| CN114653176A (en) * | 2022-04-18 | 2022-06-24 | 中船动力研究院有限公司 | Diesel engine tail gas desulfurization dust collector |
-
2018
- 2018-12-13 CN CN201822092976.2U patent/CN209378782U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109603499A (en) * | 2018-12-13 | 2019-04-12 | 北京国电龙源环保工程有限公司 | A kind of hybrid flue gas condensing cooling device |
| CN114653176A (en) * | 2022-04-18 | 2022-06-24 | 中船动力研究院有限公司 | Diesel engine tail gas desulfurization dust collector |
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Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Address before: 100039 room 911, 1 building, 16 West Fourth Ring Road, Haidian District, Beijing. Patentee before: BEIJING GUODIAN LONGYUAN ENVIRONMENTAL ENGINEERING Co.,Ltd. |
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