CN102078764A - Flue gas lime-gypsum desulfuration method for industrial furnace without chimney - Google Patents
Flue gas lime-gypsum desulfuration method for industrial furnace without chimney Download PDFInfo
- Publication number
- CN102078764A CN102078764A CN 201010593346 CN201010593346A CN102078764A CN 102078764 A CN102078764 A CN 102078764A CN 201010593346 CN201010593346 CN 201010593346 CN 201010593346 A CN201010593346 A CN 201010593346A CN 102078764 A CN102078764 A CN 102078764A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- absorption tower
- chimney
- tower
- industrial furnace
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 title claims abstract description 57
- 239000003546 flue gas Substances 0.000 title claims abstract description 57
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 31
- 238000000034 method Methods 0.000 title claims abstract description 29
- 239000010440 gypsum Substances 0.000 title claims abstract description 18
- 229910052602 gypsum Inorganic materials 0.000 title claims abstract description 18
- 238000010521 absorption reaction Methods 0.000 claims abstract description 44
- 238000004140 cleaning Methods 0.000 claims abstract description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 11
- 239000002131 composite material Substances 0.000 claims abstract description 8
- 229910001220 stainless steel Inorganic materials 0.000 claims abstract description 8
- 239000010935 stainless steel Substances 0.000 claims abstract description 8
- 238000011010 flushing procedure Methods 0.000 claims abstract description 6
- 239000012535 impurity Substances 0.000 claims abstract description 6
- 239000007788 liquid Substances 0.000 claims abstract description 5
- 239000007789 gas Substances 0.000 claims abstract description 4
- 230000023556 desulfurization Effects 0.000 claims description 21
- 239000000779 smoke Substances 0.000 claims description 11
- 239000002002 slurry Substances 0.000 claims description 10
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 8
- 238000004064 recycling Methods 0.000 claims description 8
- 239000011593 sulfur Substances 0.000 claims description 8
- 229910052717 sulfur Inorganic materials 0.000 claims description 8
- 235000008733 Citrus aurantifolia Nutrition 0.000 claims description 6
- 241000282326 Felis catus Species 0.000 claims description 6
- 235000011941 Tilia x europaea Nutrition 0.000 claims description 6
- 239000004571 lime Substances 0.000 claims description 6
- 230000003647 oxidation Effects 0.000 claims description 4
- 238000007254 oxidation reaction Methods 0.000 claims description 4
- 238000013459 approach Methods 0.000 claims description 3
- 230000003009 desulfurizing effect Effects 0.000 claims description 3
- 238000000247 postprecipitation Methods 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 238000004062 sedimentation Methods 0.000 claims description 3
- 239000002893 slag Substances 0.000 claims description 3
- 238000005507 spraying Methods 0.000 claims description 3
- 238000000889 atomisation Methods 0.000 abstract 1
- 239000004570 mortar (masonry) Substances 0.000 abstract 1
- 235000019504 cigarettes Nutrition 0.000 description 6
- 238000005260 corrosion Methods 0.000 description 4
- 230000007797 corrosion Effects 0.000 description 3
- 238000013461 design Methods 0.000 description 3
- KRHYYFGTRYWZRS-UHFFFAOYSA-N Fluorane Chemical compound F KRHYYFGTRYWZRS-UHFFFAOYSA-N 0.000 description 2
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000005530 etching Methods 0.000 description 2
- 230000008676 import Effects 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000003755 preservative agent Substances 0.000 description 2
- 230000002335 preservative effect Effects 0.000 description 2
- 235000019738 Limestone Nutrition 0.000 description 1
- LSNNMFCWUKXFEE-UHFFFAOYSA-N Sulfurous acid Chemical compound OS(O)=O LSNNMFCWUKXFEE-UHFFFAOYSA-N 0.000 description 1
- 230000009471 action Effects 0.000 description 1
- 230000002421 anti-septic effect Effects 0.000 description 1
- GBAOBIBJACZTNA-UHFFFAOYSA-L calcium sulfite Chemical compound [Ca+2].[O-]S([O-])=O GBAOBIBJACZTNA-UHFFFAOYSA-L 0.000 description 1
- 235000010261 calcium sulphite Nutrition 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 230000002950 deficient Effects 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 239000011521 glass Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000002401 inhibitory effect Effects 0.000 description 1
- 239000006028 limestone Substances 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000012797 qualification Methods 0.000 description 1
- 239000011150 reinforced concrete Substances 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000003860 storage Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Abstract
The invention discloses a flue gas lime-gypsum desulfuration method for an industrial furnace without a chimney. The method comprises the following steps: after the flue gas of the industrial furnace is purified by a deduster, an induced draft fan leads the purified flue gas into an absorption tower, wherein the absorption tower is made of a high-temperature resistant stainless steel composite material; the flue gas is subjected to reverse convection contact with the atomized mortar desulfuration liquid sprayed by a nozzle in the tower to form a good atomization absorption area, thus finishing the desulfuration and absorption of the flue gas; and the desulfurated flue gas is demisted by a demister at the top of the tower and demisted gas is directly discharged from a chimney at the top of the tower. According to the invention, the absorption tower is made of the high-temperature resistant stainless steel composite material, and the flue gas is discharged by the chimney at the top of the absorption tower integrated with the chimney and the tower when a desulfuration system fails or the desulfuration system is not used due to other reasons. Meanwhile, a system self-cleaning system works to aperiodically flush components entering the absorption tower. The flushing water enters an independently arranged self-cleaning water tank and is recycled after impurities are precipitated.
Description
Technical field
The present invention relates to a kind of industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney.
Background technology
At present, what domestic industry stove flue gas desulfurization technique was most widely used is the lime-gypsum wet flue gas desulfurization technique, on desulfurization transformation project and grassroot project, does not establish GGH, clean flue gas after the desulfurization is saturated wet flue gas, and the cigarette temperature is low, high humidity, little from pull out force.
In addition, also there is the etching problem of desulfurization wet flue gas in wet desulphurization, and the corrosion type of desulfurization wet flue gas comprises sulfuric acid, sulfurous acid, hydrochloric acid, hydrofluoric acid etc., and the flue gas grade is a severe corrosive.Chimney is under the double action of flue gas pressures that contains Korrosionsmedium and humidity, and the condensate that dewfall forms has very strong corrosivity, and the material production corrosion to chimney inside structure density difference influences structure durability.
Design standard according to International Industry chimney association (CICIND): coal-burning power plant's desulfuration chimney should design by deep-etching flue gas grade.
Traditional chimney is generally monotubular formula taper reinforced concrete chimney, for being suitable for the service condition of desulfurization wet flue gas, must carry out preservative treatment to its inwall.Corrosion-inhibiting coating must satisfy desulphurization system operation or because of hot flue gas medium environment under maintenance and the accident conditions desulphurization system two states out of service.
In the design of stove exhaust system, all contain chimney.Fume emission after the desulfurization is as utilizing original chimney, and as mentioned above, the chimney that clean flue gas passes through need be done preservative treatment.
Summary of the invention
The technical issues that need to address of the present invention just are to overcome the defective of prior art, a kind of industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney is provided, it adopts resistant to elevated temperatures stainless steel composite material to make the absorption tower, when desulphurization system fault or other reasons do not use desulphurization system, utilize top, the absorption tower smoke stack emission flue gas of " unification of cigarette tower ".Simultaneously, system's self-cleaning system works is irregularly washed the parts that enter the absorption tower.Flushing water enters the self-cleaning tank of independent setting, and is recycling after the precipitated impurities.
For addressing the above problem, the present invention adopts following technical scheme:
The invention provides a kind of industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney, described method comprises the following steps:
The industrial furnace flue gas is introduced the absorption tower by air-introduced machine after deduster purifies, described absorption tower is the absorption tower that resistant to elevated temperatures stainless steel composite material is made; Flue gas contacts with the reverse convection current of atomizing lime white doctor solution of nozzle ejection at Ta Nei, forms good atomizing uptake zone, and the desulfurization of finishing flue gas absorbs; Flue gas after desulfurization is by the demister of cat head, after the demist directly from the cat head smoke stack emission.
Inherent absorption tower, absorption tower is for the first time below the spraying layer and the secondary pulse device is installed between the gas approach, form between flue gas and the doctor solution and impact, it is poor to form dynamic pressure, flue gas flow rate is slack-off, the time of contact of desulfurization slurry and flue gas is elongated, it is abundant that mass transport process is carried out, and the time of contact of prolong smoke and slurries, improves desulfuration efficiency.
Absorb SO
2Doctor solution be delivered to oxidation pond through piping and be oxidized to gypsum, flow into the sedimentation basin precipitation by pipeline again, the gypsum slurries of post precipitation is grabbed out by the driving grab bucket, dries the back outward transport, clear liquid is returned desulfurizing tower by the slag stock pump, and is recycling.
Described absorption tower is provided with the self-cleaning system, irregularly the parts that enter the absorption tower is washed, and flushing water enters the self-cleaning tank of independent setting, and is recycling after the precipitated impurities.
The present invention has used the technology of " unification of cigarette tower ", in the industrial furnace desulfurization project, chimney is directly designed at the top, absorption tower, solve the chimney that clean flue gas passes through and to have done antiseptic problem, original chimney uses as bypass, when desulphurization system maintenance or fault, to open the by-pass damper door, close absorption tower import baffle door, flue gas is through original smoke stack emission.
This patent adopts resistant to elevated temperatures stainless steel composite material to make the absorption tower, when desulphurization system fault or other reasons do not use desulphurization system, utilizes top, the absorption tower smoke stack emission flue gas of " unification of cigarette tower ".Simultaneously, system's self-cleaning system works is irregularly washed the parts that enter the absorption tower.Flushing water enters the self-cleaning tank of independent setting, and is recycling after the precipitated impurities.
During operate as normal, system carries out desulfurization according to lime-gypsum method to flue gas.
The inventive method main feature has:
1, the absorption tower can be born 250 ℃, need not anti-corrosion measure, can reduce the investment of chimney.
2, calcium sulfite oxidation is outside tower, not desulphurization system fouling together, obstruction.
3, self-cleaning system can guarantee can not stop up when the absorption tower internals are used under hot conditions.
4, the self-cleaning tank recycles rinse water, energy savings and water resource.
The inventive method is applicable to that the boiler tonnage is the glass melter of 300～900t/d in heating boiler, Industrial Boiler, 100～2,000,000 ton cement rotary kiln, the melting capacity of 1～220t/h.
The specific embodiment
It is the absorption tower that resistant to elevated temperatures stainless steel composite material is made that the present invention adopts the absorption tower, in the industrial furnace desulfurization project, chimney is directly designed at the top, absorption tower, when desulphurization system fault or other reasons do not use desulphurization system, utilize top, the absorption tower smoke stack emission flue gas of " unification of cigarette tower ".
The industrial furnace flue gas is introduced the absorption tower by air-introduced machine after deduster purifies.Flue gas contacts with the reverse convection current of atomizing doctor solution of nozzle ejection at Ta Nei, forms good atomizing uptake zone, and the desulfurization of finishing flue gas absorbs.Flue gas after desulfurization is by the demister of cat head, after the demist directly from the cat head smoke stack emission.
Adopt the secondary pulse device in the absorption tower, the time of contact of prolong smoke and slurries, improve desulfuration efficiency.The secondary pulse device is placed in below the spraying layer first time of absorption tower and between the gas approach.After flue gas enters the absorption tower, form between flue gas and the doctor solution and impact, it is poor to form dynamic pressure, and flue gas flow rate is slack-off, and the time of contact of desulfurization slurry and flue gas is elongated, and it is abundant that mass transport process is carried out.
With closed tank truck lime is transported in the factory, carries (air compressor machine) to be transported in the lime storage tank standby by strength.Pulverized limestone is transported to the water circulating pump import by the lime white liquid pump after digesting through digester, enters the absorption tower and carries out desulfurization.
Water circulating pump is extracted doctor solution out in the tower still, and the combined lime slurries are got to and carried out desulphurization reaction in the tower simultaneously.After absorbing sulfur dioxide, flow back to absorption Tata still, be provided with tower still mixer in the tower still.
Simultaneously, absorb SO
2Doctor solution be delivered to oxidation pond through piping and be oxidized to gypsum, flow into the sedimentation basin precipitation by pipeline again, the gypsum slurries of post precipitation is grabbed out by the driving grab bucket, dries the back outward transport.Clear liquid is returned desulfurizing tower by the slag stock pump, and is recycling.
This patent adopts resistant to elevated temperatures stainless steel composite material to make the absorption tower, when desulphurization system fault or other reasons do not use desulphurization system, utilizes top, the absorption tower smoke stack emission flue gas of " unification of cigarette tower ".Simultaneously, system's self-cleaning system works is irregularly washed the parts that enter the absorption tower.Flushing water enters the self-cleaning tank of independent setting, and is recycling after the precipitated impurities.
It should be noted that at last: obviously, the foregoing description only is for example of the present invention clearly is described, and is not the qualification to embodiment.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here need not also can't give exhaustive to all embodiments.And conspicuous variation of being amplified out thus or change still are among protection scope of the present invention.
Claims (4)
1. industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney, it is characterized in that: described method comprises the following steps:
The industrial furnace flue gas is introduced the absorption tower by air-introduced machine after deduster purifies, described absorption tower is the absorption tower that resistant to elevated temperatures stainless steel composite material is made; Flue gas contacts with the reverse convection current of atomizing lime white doctor solution of nozzle ejection at Ta Nei, forms good atomizing uptake zone, and the desulfurization of finishing flue gas absorbs; Flue gas after desulfurization is by the demister of cat head, after the demist directly from the cat head smoke stack emission.
2. the industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney as claimed in claim 1, it is characterized in that: inherent absorption tower, absorption tower is for the first time below the spraying layer and the secondary pulse device is installed between the gas approach, form between flue gas and the doctor solution and impact, it is poor to form dynamic pressure, flue gas flow rate is slack-off, and the time of contact of desulfurization slurry and flue gas is elongated, and it is abundant that mass transport process is carried out, the time of contact of prolong smoke and slurries, improve desulfuration efficiency;
3. the industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney as claimed in claim 2 is characterized in that: absorb SO
2Doctor solution be delivered to oxidation pond through piping and be oxidized to gypsum, flow into the sedimentation basin precipitation by pipeline again, the gypsum slurries of post precipitation is grabbed out by the driving grab bucket, dries the back outward transport, clear liquid is returned desulfurizing tower by the slag stock pump, and is recycling.
4. as the arbitrary described industrial furnace flue gas lime-gypsum method sulfur method of not establishing chimney of claim 1-3, it is characterized in that: described absorption tower is provided with the self-cleaning system, irregularly the parts that enter the absorption tower are washed, flushing water enters the self-cleaning tank of independent setting, and is recycling after the precipitated impurities.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010593346 CN102078764A (en) | 2010-12-17 | 2010-12-17 | Flue gas lime-gypsum desulfuration method for industrial furnace without chimney |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010593346 CN102078764A (en) | 2010-12-17 | 2010-12-17 | Flue gas lime-gypsum desulfuration method for industrial furnace without chimney |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN102078764A true CN102078764A (en) | 2011-06-01 |
Family
ID=44085076
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201010593346 Pending CN102078764A (en) | 2010-12-17 | 2010-12-17 | Flue gas lime-gypsum desulfuration method for industrial furnace without chimney |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102078764A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587826A (en) * | 2015-02-09 | 2015-05-06 | 安徽海螺建材设计研究院 | Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185840A (en) * | 2007-08-24 | 2008-05-28 | 北京紫光威肯环保工程技术有限公司 | Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower |
-
2010
- 2010-12-17 CN CN 201010593346 patent/CN102078764A/en active Pending
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101185840A (en) * | 2007-08-24 | 2008-05-28 | 北京紫光威肯环保工程技术有限公司 | Turbine type pressure charging acceleration fuel gas desulfurization gas wash tower |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104587826A (en) * | 2015-02-09 | 2015-05-06 | 安徽海螺建材设计研究院 | Novel dry-process cement kiln tail flue gas desulfurization system and desulfurization process thereof |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| WO2008052465A1 (en) | A sintered flue gas wet desulfurizing and dedusting process | |
| CN204911218U (en) | Single-tower double-area circulating absorption desulfurization system | |
| CN102101006A (en) | Process for removing SO2 in smoke from boiler of coking plant by utilizing residual coked ammonia water | |
| CN210631915U (en) | Cement kiln desulfurization system | |
| CN102423608A (en) | Desulfurizer made from causticized lime mud and method for flue gas desulfurization | |
| CN108499343A (en) | A kind of coal-fired boiler tail gas integrated desulfurization, denitration, smoke harnessing system | |
| CN110772963B (en) | Desulfurization, dust removal, denitration and waste heat recovery integrated equipment and purification system thereof | |
| CN102269527A (en) | Low-temperature flue gas exhaust heat utilization method and system including desulfurizing process | |
| CN204220017U (en) | Two-way Cycle multilevel water curtains desulphurization reaction system and device | |
| CN102078764A (en) | Flue gas lime-gypsum desulfuration method for industrial furnace without chimney | |
| CN102585655B (en) | A kind of impregnating material for stack desulfurization chimney | |
| CN106215678B (en) | A cement kiln semi-dry desulfurization system | |
| CN101927128A (en) | Desulphurization equipment group and working method thereof | |
| CN106925078A (en) | A kind of ultra-clean reheating exhaust system of desulfurization and the method based on the system | |
| CN207445927U (en) | A kind of Wet FGD | |
| CN215610539U (en) | A system for removing sulfur dioxide from exhaust gas by dual-alkali flue spraying | |
| CN212575977U (en) | Sintering flue gas ultra-clean system | |
| CN204005906U (en) | The desulfurization integrated waste heat boiler of multi-state denitration | |
| CN205948642U (en) | Seawater desulfurization dust pelletizing system | |
| CN104197309A (en) | Method for recycling heat energy in low-temperature smoke containing SO3 and dust | |
| CN211328914U (en) | Composite catalytic desulfurization system | |
| CN107321162A (en) | Kiln gas exhaust apparatus | |
| CN107774074A (en) | Rotary spraying system and method for low-temperature simultaneous desulfurization and denitrification | |
| CN201688716U (en) | Low-temperature flue gas waste heat utilization apparatus containing desulphurization technology | |
| CN201040225Y (en) | Lower bending type directional spraying tube system spray device |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C12 | Rejection of a patent application after its publication | ||
| RJ01 | Rejection of invention patent application after publication |
Application publication date: 20110601 |