JPH0229367B2 - KANSHIKIHAIENDATSURYUHOHO - Google Patents
KANSHIKIHAIENDATSURYUHOHOInfo
- Publication number
- JPH0229367B2 JPH0229367B2 JP60227796A JP22779685A JPH0229367B2 JP H0229367 B2 JPH0229367 B2 JP H0229367B2 JP 60227796 A JP60227796 A JP 60227796A JP 22779685 A JP22779685 A JP 22779685A JP H0229367 B2 JPH0229367 B2 JP H0229367B2
- Authority
- JP
- Japan
- Prior art keywords
- tower
- recovery system
- sulfur recovery
- gas
- desorption
- 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.)
- Expired - Lifetime
Links
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 17
- 229910052717 sulfur Inorganic materials 0.000 claims description 17
- 239000011593 sulfur Substances 0.000 claims description 17
- 239000007789 gas Substances 0.000 claims description 14
- 238000011084 recovery Methods 0.000 claims description 13
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- 238000003795 desorption Methods 0.000 claims description 11
- 238000004140 cleaning Methods 0.000 claims description 10
- 238000006477 desulfuration reaction Methods 0.000 claims description 6
- 230000023556 desulfurization Effects 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 5
- 239000007921 spray Substances 0.000 claims description 5
- 239000012535 impurity Substances 0.000 claims description 4
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 claims description 3
- 239000003546 flue gas Substances 0.000 claims description 3
- 239000000428 dust Substances 0.000 description 5
- 238000005406 washing Methods 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical class [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 2
- 235000019270 ammonium chloride Nutrition 0.000 description 1
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 description 1
- 229910052921 ammonium sulfate Inorganic materials 0.000 description 1
- 235000011130 ammonium sulphate Nutrition 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Landscapes
- Treating Waste Gases (AREA)
Description
【発明の詳細な説明】
（関連技術分野）
本発明は乾式排煙脱硫方法の改良に関するもの
である。DETAILED DESCRIPTION OF THE INVENTION (Related Technical Field) The present invention relates to an improvement in a dry flue gas desulfurization method.
（従来技術）
従来は、脱離塔出口には、サイクロン集塵器の
様な簡単でしかもダストのみしか除去できない集
塵器が設置されていた。しかもこれはダスト捕集
効率が悪く、塩安（NH4Cl）、硫安
（（NH4）2SO4）はそのまま通過し、次の硫黄回収
系へ流入されるという状態であつた。(Prior Art) Conventionally, a simple dust collector such as a cyclone dust collector that can only remove dust has been installed at the exit of the desorption tower. Moreover, the dust collection efficiency was poor, and ammonium chloride (NH 4 Cl) and ammonium sulfate ((NH 4 ) 2 SO 4 ) were allowed to pass through as they were and flowed into the next sulfur recovery system.
（発明の解決しようとする問題点）
従来型乾式脱硫装置では、乾式脱硫プロセスに
おける硫黄回収系の硫黄コンデンサー、スクラバ
ーがNH4Clや（NH4）2SO4或いは活性炭粉等によ
つて閉塞したり、回収硫黄内へ上記物質が混入
し、回収硫黄の純度を落すという問題があつた
が、本発明はこのような問題を解決しようとする
ものである。(Problems to be solved by the invention) In conventional dry desulfurization equipment, the sulfur condenser and scrubber of the sulfur recovery system in the dry desulfurization process are clogged with NH 4 Cl, (NH 4 ) 2 SO 4 or activated carbon powder. However, the present invention is intended to solve these problems.
（発明の解決手段）
脱離塔と硫黄回収系との間に水スプレーとこれ
に続く充填塔よりなる洗浄塔を設置し、この洗浄
塔で脱離ガス中の不純物を除去したのち硫黄回収
系に送るようにしたことを特徴とする。(Solution Means of the Invention) A cleaning tower consisting of a water spray and a subsequent packed tower is installed between the desorption tower and the sulfur recovery system, and after removing impurities in the desorption gas with this cleaning tower, the sulfur recovery system The feature is that it is sent to
（実施例）
１は脱離塔で、この脱離塔１を出た脱離ガスは
NH4Cl、（NH4）2SO4、HFを1000〜10000ppm程
度含んでいる。又この他に活性炭粉を１〜３ｇ／
Ｎm3程度含んでいる。脱離ガスはダクト２を経
て、洗浄塔３でまず水スプレー３ａと接触し、
NH4Cl、（NH4）2SO4、HF等が洗浄されてこれら
物質の含有率が０〜10ppmまで低減される。又含
有されているSO2はほとんど水に溶けないため、
そのまま純度の高いSO2リツチガスとして充填塔
３ｂを経て後段の硫黄回収系４に送られる。(Example) 1 is a desorption tower, and the desorption gas leaving this desorption tower 1 is
Contains about 1000 to 10000 ppm of NH 4 Cl, (NH 4 ) 2 SO 4 and HF. In addition to this, add 1 to 3 g of activated carbon powder.
Contains about Nm3 . The desorbed gas passes through the duct 2 and first comes into contact with the water spray 3a in the cleaning tower 3.
NH 4 Cl, (NH 4 ) 2 SO 4 , HF, etc. are washed to reduce the content of these substances to 0 to 10 ppm. Also, since the SO 2 contained is almost insoluble in water,
The gas is directly sent to the subsequent sulfur recovery system 4 via the packed column 3b as a highly pure SO 2 rich gas.
洗浄塔３の前段では水スプレー３ａに直接脱離
ガスが接触するので、ガス温度も下げ、後段のラ
シヒリング等が充填されている充填塔３ｂ内で気
液接触して完全にNH4Cl、（NH4）2SO4等が除去
される。 In the first stage of the cleaning tower 3, the desorbed gas comes into direct contact with the water spray 3a, so the gas temperature is also lowered, and in the latter stage packed tower 3b filled with Raschig rings, etc., gas-liquid contact occurs and complete NH 4 Cl, ( NH 4 ) 2 SO 4 etc. are removed.
又脱離ガス中には30〜40％のH2Oが含まれて
いるが、充填塔３ｂで凝縮除去される。かくして
充填塔の出口では、約70〜80℃のガス温度となつ
ている。 Furthermore, the desorption gas contains 30 to 40% H 2 O, which is condensed and removed in the packed column 3b. Thus, at the outlet of the packed column, the gas temperature is approximately 70-80°C.
充填塔３ｂにて精製されたSO2リツチの脱離ガ
スは硫黄回収系４に送られ、高純度の硫黄として
回収される。残つたテールガスは焼却炉５で焼却
される。 The SO2 - rich desorbed gas purified in the packed column 3b is sent to the sulfur recovery system 4, where it is recovered as high-purity sulfur. The remaining tail gas is incinerated in an incinerator 5.
洗浄塔３ではポンプ７によつて洗浄水が循環さ
れるが、洗浄水槽６内のPH値等の増加によつて
適時補給水が注入されるようになつている。又洗
浄水槽６のその水位検出により、適時洗浄水はパ
ージ排水される。 In the washing tower 3, washing water is circulated by a pump 7, and make-up water is injected at appropriate times as the pH value in the washing water tank 6 increases. Further, by detecting the water level in the cleaning water tank 6, the cleaning water is purged and drained at an appropriate time.
（効果）
従来乾式脱硫プロセスに於ては不純物
（NH4Cl、（NH4）2SO4、HF、HCl、NH3等）を
含んだSO2リツチ脱離ガスがそのまま硫黄回収系
に送られ、硫黄コンデンサー、スクラバー等の閉
塞や腐触等の種々のトラブルの原因となつてい
た。本発明の如く、脱離塔と硫黄回収系との間に
洗浄塔を設ることにより、コンデンサー、スク
ラバー等の閉塞がなくなり、硫黄回収系の安全運
転が可能となつた。不純物とともに活性炭粉な
どのダストも洗浄塔で除去するので、純度の高い
硫黄が硫黄回収系で回収できる。(Effects) In the conventional dry desulfurization process, the SO2- rich desorbed gas containing impurities (NH 4 Cl, (NH 4 ) 2 SO 4 , HF, HCl, NH 3, etc.) is directly sent to the sulfur recovery system. This caused various problems such as clogging and corrosion of sulfur condensers, scrubbers, etc. By providing a cleaning tower between the desorption tower and the sulfur recovery system as in the present invention, clogging of condensers, scrubbers, etc. is eliminated, and safe operation of the sulfur recovery system is made possible. Since dust such as activated carbon powder is removed along with impurities in the cleaning tower, highly pure sulfur can be recovered in the sulfur recovery system.
図は本発明に係る排煙脱硫プロセスを示す図。
図において；
１……脱離塔、２……ダクト、３……洗浄塔、
３ａ……水スプレー、３ｂ……充填塔、４……硫
黄回収系、５……（テールガスの）焼却炉、６…
…洗浄水槽、７……ポンプ。
The figure shows a flue gas desulfurization process according to the present invention.
In the figure; 1... Desorption tower, 2... Duct, 3... Washing tower,
3a... Water spray, 3b... Packed tower, 4... Sulfur recovery system, 5... (Tail gas) incinerator, 6...
...Washing tank, 7...Pump.
Claims (1)
れに続く充填塔よりなる洗浄塔を設置し、該洗浄
塔で脱離ガス中の不純物を除去したのち硫黄回収
系に送るようにしたことを特徴とする乾式排煙脱
硫方法。1 A cleaning tower consisting of a water spray and a packed tower was installed between the desorption tower and the sulfur recovery system, and the cleaning tower removed impurities in the desorption gas before sending it to the sulfur recovery system. A dry flue gas desulfurization method characterized by:
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227796A JPH0229367B2 (en) | 1985-10-15 | 1985-10-15 | KANSHIKIHAIENDATSURYUHOHO |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP60227796A JPH0229367B2 (en) | 1985-10-15 | 1985-10-15 | KANSHIKIHAIENDATSURYUHOHO |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6287226A JPS6287226A (en) | 1987-04-21 |
| JPH0229367B2 true JPH0229367B2 (en) | 1990-06-29 |
Family
ID=16866521
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP60227796A Expired - Lifetime JPH0229367B2 (en) | 1985-10-15 | 1985-10-15 | KANSHIKIHAIENDATSURYUHOHO |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH0229367B2 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103143253A (en) * | 2013-03-19 | 2013-06-12 | 瓮福（集团）有限责任公司 | Device for removing low-concentration sulfur dioxide from phosphate concentrate and application method of device |
-
1985
- 1985-10-15 JP JP60227796A patent/JPH0229367B2/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6287226A (en) | 1987-04-21 |
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