CN204746082U - Improve ultra -low temperature semidry method desulphurization unit of water conservation rate - Google Patents
Improve ultra -low temperature semidry method desulphurization unit of water conservation rate Download PDFInfo
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- CN204746082U CN204746082U CN201520394289.XU CN201520394289U CN204746082U CN 204746082 U CN204746082 U CN 204746082U CN 201520394289 U CN201520394289 U CN 201520394289U CN 204746082 U CN204746082 U CN 204746082U
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- semidry method
- flue gas
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- low temperature
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Abstract
The utility model provides an improve ultra -low temperature semidry method desulphurization unit of water conservation rate, includes cigarette tuber pipe way, semidry method flue gas desulfurization reaction ware, sack cleaner, its characterized in that: set up the gas cooler before semidry method flue gas desulfurization reaction ware, arrange a plurality of water spray points in semidry method flue gas desulfurization reaction ware lower part annular, through returning charge chute and semidry method flue gas desulfurization reaction ware lower part intercommunication below the dust remover. The utility model discloses utilize semidry method desulfurization system water balance and heat balance's basic principle, increase 1-2 grade of high -efficient ultra -low temperature flue gas heat transfer device before the desulfurization, with CFB flue -gas temperature from 140 DEG C of reductions to 75 DEG C -80 DEG C backs, realize that a large amount of heat recovery utilizes, the heat of recovery can be used for flue gas thermal system again, the heat -setting water system, and heating heating system etc. Have realized higher heat economy nature.
Description
Technical field
During the utility model is mainly applicable to use, the thermal power plant semi-dry flue gas desulfurization device of low sulfur ature of coal.
Background technology
Along with Environmental Protection in China index is increasingly strict, domestic CFBB (CFB) of having gone into operation cannot meet environmental requirement, needs to arrange two-grade desulfurizing system after stove.For semi-dry desulfurizing process, its feature is, under the prerequisite of relatively low water consumption, realizes desulfuration efficiency more than 90%.And for numerous areas of serious, home and abroad, its water consumption index still cannot meet local water resource limit value.
Utility model content
The purpose of this utility model effectively reduces semi-dry desulphurization system water consumption.Adopt the utility model technology, under the prerequisite of equal desulfuration efficiency, make semi-dry desulphurization system water consumption be reduced to less than 40% by original 100%, water-saving rate reaches about 60%, effectively controls desulfurization water consumption, and energy-conserving and environment-protective.
For achieving the above object, the utility model provides a kind of ultralow temperature semidry process desulfurizer improving water-saving rate, comprise smoke wind pipe, semi-dry desulphurization reactor, sack cleaner, it is characterized in that: before semi-dry desulphurization reactor, gas cooler is set, to be circular layout multiple injection point at semi-dry desulphurization reactor lower part, deduster is communicated with semi-dry desulphurization reactor lower part below by returning charge skewed slot.
The utility model utilizes the general principle of semi-dry desulphurization system water balance and heat balance, 1 ~ 2 grade of high-efficiency ultralow temperature smoke heat replacing device is increased before desulfurization, after CFB flue-gas temperature is reduced to 75 DEG C ~ 80 DEG C from 140 DEG C, realize a large amount of heat recovery and utilizations, the heat reclaimed may be used for flue gas reheat system, heat-setting water system, heating system etc., achieve higher heat-economy.Due to the reduction of temperature, flue gas volume flow declines, and reduces equipment manufacturing cost and the power consumption of follow-up desulfurization reactor, deduster and air-introduced machine.The more important thing is under the prerequisite affecting desulfuration efficiency hardly, substantially reduce the number the consumption of spray water flux in reactor, only need supplement a little water yield in tower and can activate desulfurizing agent and realize desulfurization efficiency.
For certain 300MWCFB unit semi-dry desulphurization design parameter, adopt this patented technology, substantially increase fume afterheat utilization rate, effectively reduce the cost of system water consumption and follow-up equipment, realize desulfurization overall efficiency more than 97%, desulphurization system water-saving rate, more than 60%, is applicable to the CFB unit of vast water-deficient area, home and abroad.
Accompanying drawing explanation
Fig. 1 is the utility model schematic diagram.
1. gas cooler; 2. smoke wind pipe; 3. semi-dry desulphurization reactor; 4. sack cleaner; 5. injection point; 6. desulfurizing agent entrance; 7. instead expect skewed slot.
Detailed description of the invention
With reference to Fig. 1, the utility model comprises gas cooler 1, smoke wind pipe 2, semi-dry desulphurization reactor 3, sack cleaner 4, before semi-dry desulphurization reactor, gas cooler is set, to be circular layout multiple injection point 5 at semi-dry desulphurization reactor lower part, sack cleaner is communicated with semi-dry desulphurization reactor lower part below by returning charge skewed slot 7.
The high-temperature flue gas of CFB boiler enters gas cooler, enter semi-dry desulphurization reactor through smoke wind pipe after flue-gas temperature is reduced to 75 DEG C from 145 DEG C after heat exchange and participate in reaction, after high-efficiency desulfurization, enter follow-up sack cleaner dedusting, after desulfation dust-extraction device, 10mg/Nm can be met
3(dust) and 35mg/Nm
3(SO
2) discharge index.Multiple injection point is circular layout at reactor lower part, and under the effect of high-pressure atomization spray gun, the high-efficient contact of water smoke and flue gas, realizes Dry FGD.Under deduster, flying dust and unreacted desulfurizing agent are filled into reactor lower part by returning charge skewed slot, realize unreacted desulfurizing agent and recycle.
Claims (1)
1. one kind is improved the ultralow temperature semidry process desulfurizer of water-saving rate, comprise smoke wind pipe, semi-dry desulphurization reactor, sack cleaner, it is characterized in that: before semi-dry desulphurization reactor, gas cooler is set, to be circular layout multiple injection point at semi-dry desulphurization reactor lower part, deduster is communicated with semi-dry desulphurization reactor lower part below by returning charge skewed slot.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394289.XU CN204746082U (en) | 2015-06-10 | 2015-06-10 | Improve ultra -low temperature semidry method desulphurization unit of water conservation rate |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520394289.XU CN204746082U (en) | 2015-06-10 | 2015-06-10 | Improve ultra -low temperature semidry method desulphurization unit of water conservation rate |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204746082U true CN204746082U (en) | 2015-11-11 |
Family
ID=54460841
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201520394289.XU Active CN204746082U (en) | 2015-06-10 | 2015-06-10 | Improve ultra -low temperature semidry method desulphurization unit of water conservation rate |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204746082U (en) |
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2015
- 2015-06-10 CN CN201520394289.XU patent/CN204746082U/en active Active
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| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |