JPH01138292A - Treatment of collected coke powder in coke dry quencher - Google Patents
Treatment of collected coke powder in coke dry quencherInfo
- Publication number
- JPH01138292A JPH01138292A JP62295818A JP29581887A JPH01138292A JP H01138292 A JPH01138292 A JP H01138292A JP 62295818 A JP62295818 A JP 62295818A JP 29581887 A JP29581887 A JP 29581887A JP H01138292 A JPH01138292 A JP H01138292A
- Authority
- JP
- Japan
- Prior art keywords
- coke
- temperature
- collected
- powder
- coke powder
- 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
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 36
- 239000000571 coke Substances 0.000 title claims abstract description 28
- 239000000428 dust Substances 0.000 claims abstract description 18
- 230000003213 activating effect Effects 0.000 claims abstract description 4
- 238000011084 recovery Methods 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 15
- 239000007789 gas Substances 0.000 abstract description 17
- 230000004913 activation Effects 0.000 abstract description 16
- 239000002918 waste heat Substances 0.000 abstract description 8
- 238000007664 blowing Methods 0.000 abstract 1
- 239000000843 powder Substances 0.000 abstract 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 6
- 238000002485 combustion reaction Methods 0.000 description 5
- 238000001179 sorption measurement Methods 0.000 description 5
- 229910052799 carbon Inorganic materials 0.000 description 3
- 238000006243 chemical reaction Methods 0.000 description 3
- 238000001816 cooling Methods 0.000 description 3
- 238000006477 desulfuration reaction Methods 0.000 description 3
- 230000023556 desulfurization Effects 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000010438 heat treatment Methods 0.000 description 3
- MWUXSHHQAYIFBG-UHFFFAOYSA-N nitrogen oxide Inorganic materials O=[N] MWUXSHHQAYIFBG-UHFFFAOYSA-N 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- 239000003463 adsorbent Substances 0.000 description 2
- 239000003245 coal Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 239000003516 soil conditioner Substances 0.000 description 2
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 239000000809 air pollutant Substances 0.000 description 1
- 231100001243 air pollutant Toxicity 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 229910002091 carbon monoxide Inorganic materials 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 239000003638 chemical reducing agent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 238000007599 discharging Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000007952 growth promoter Substances 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- JTJMJGYZQZDUJJ-UHFFFAOYSA-N phencyclidine Chemical class C1CCCCN1C1(C=2C=CC=CC=2)CCCCC1 JTJMJGYZQZDUJJ-UHFFFAOYSA-N 0.000 description 1
- 230000008635 plant growth Effects 0.000 description 1
- 230000008929 regeneration Effects 0.000 description 1
- 238000011069 regeneration method Methods 0.000 description 1
- 238000007086 side reaction Methods 0.000 description 1
- 239000002689 soil Substances 0.000 description 1
- XTQHKBHJIVJGKJ-UHFFFAOYSA-N sulfur monoxide Chemical class S=O XTQHKBHJIVJGKJ-UHFFFAOYSA-N 0.000 description 1
- 229910052815 sulfur oxide Inorganic materials 0.000 description 1
- 239000002912 waste gas Substances 0.000 description 1
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
〔産業上の利用分野〕
本発明はコークス乾式消火設備から発生するコークス粉
の処理方法に係わる。さらに詳しくはこの集塵されたコ
ークスからガス吸層剤及び土壌改質剤等としての活性コ
ークスを得る方法に関するものである。DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application] The present invention relates to a method for treating coke powder generated from coke dry extinguishing equipment. More specifically, the present invention relates to a method for obtaining activated coke as a gas absorbing agent, soil improving agent, etc. from the collected coke.
各種廃ガス中に含まれる硫黄酸化物及び窒素酸化物を除
去する方法として湿式法、或は乾式法による脱硫、脱硝
プロセスが多数ある。このうち乾式法においては吸着還
元剤として粒状或は成形された活性炭が、その吸7f遣
元性能の面で広く用いられている。又活性炭はその多孔
質炭材としての%徴より土壌改良剤及び植物成長促進剤
としての需要が伸びてきている。There are many wet or dry desulfurization and denitration processes for removing sulfur oxides and nitrogen oxides contained in various waste gases. Among these, in the dry method, granular or molded activated carbon is widely used as an adsorption-reducing agent due to its adsorption and 7f release performance. Furthermore, demand for activated carbon as a soil conditioner and plant growth promoter is increasing due to its characteristics as a porous carbon material.
活性炭は耐圧、耐摩耗、耐衝撃などの強度が低く、移動
層や流動層形式のプロセスでの吸着、再生の繰り返し使
用に際し損耗が大きく経済性に問題がある。このような
活性炭に比較して比表面積は小さいが強度が高く、脱硫
、脱硝能力にも優れた成形活性コークスが注目されてい
る。Activated carbon has low strengths such as pressure resistance, abrasion resistance, and impact resistance, and is subject to economical problems due to large wear and tear when repeatedly used for adsorption and regeneration in moving bed or fluidized bed processes. Molded activated coke is attracting attention because it has a smaller specific surface area than activated carbon, but has higher strength and excellent desulfurization and denitrification abilities.
この活性コークスの製造方法としては、例えば特開昭5
8−213614号公報に示されるように、石炭から製
造した半成コークス主原料として、石炭類及び結合剤を
710えた混合物を成型し、該成型物を内熱式ロータリ
ーキルンを用いて、還元性雰囲気下で乾留し、次いで賦
活する脱硫脱硝用成型活性コークスの製造方法がある。As a method for producing this activated coke, for example,
As shown in Publication No. 8-213614, a mixture containing 710% of coal and a binder as the main raw material for semi-formed coke produced from coal is molded, and the molded product is heated in a reducing atmosphere using an internally heated rotary kiln. There is a method for producing shaped activated coke for desulfurization and denitrification, which is carbonized under the coke and then activated.
一方、コークス乾式消火設備(以下CDQと称す)から
は大量のコークス粉が発生する。On the other hand, a large amount of coke powder is generated from coke dry extinguishing equipment (hereinafter referred to as CDQ).
即ち、内部に冷却室を有する消火炉と外部の廃熱ボイラ
とをガス循環回路で連結し、上部から装入される赤熱コ
ークスを下部からの不活性循環ガスで消火せしめると共
に、コークスとの熱交換で高温化した循環ガスで廃熱ボ
イラを稼働せしめるようにしたシステムになっており、
消火炉から排出された循環ガスには多量のコークス粉を
含有しているため循環ガスダク)Kダストキャツチャ−
やサイクロン等を複数設けてコークス粉を補集し、処理
している。In other words, a fire extinguishing furnace with an internal cooling chamber and an external waste heat boiler are connected through a gas circulation circuit, and red-hot coke charged from the top is extinguished by inert circulating gas from the bottom, and the heat generated by the coke is extinguished. The system operates a waste heat boiler using circulating gas that has become hotter through exchange.
Since the circulating gas discharged from the fire furnace contains a large amount of coke powder, the circulating gas duct)K dust catcher
Multiple coke powder and cyclones are installed to collect and process coke powder.
このCDQにおけるコークス粉の処理方法としては、列
えば特開昭60−203693号公報に示されるように
、集塵機で補集したコークス粉を流動層燃焼設備で燃焼
処理するものがある0〔発明が解決しようとする問題点
〕
優れた吸着性能と強度を有する活性コークスを賦活によ
って得るためには原料であるコークス源な高温雰囲気に
して水蒸気等によって賦活処理する必要があり、多量の
熱エネルギーを要する。このため熱源の確保及び設備費
に多額の費用を要する難点を有する。As a method for treating coke powder in this CDQ, as shown in Japanese Patent Application Laid-Open No. 60-203693, there is a method in which coke powder collected by a dust collector is burned in a fluidized bed combustion facility. Problems to be Solved] In order to obtain activated coke with excellent adsorption performance and strength through activation, it is necessary to activate the raw coke source in a high-temperature atmosphere using water vapor, etc., which requires a large amount of thermal energy. . For this reason, it has the disadvantage of requiring a large amount of money for securing a heat source and equipment costs.
本発明はCDQ設備から回収するコークス粉は高温で回
収できること、及び賦活用の水蒸気はCDQ設備内の廃
熱ボイラの蒸気を直接利用出来る等に看目し、集塵され
たコークス粉の有効利用と、設備費とランニングコスト
を低減させた活性コークスを得る方法を提供するKある
。The present invention takes into consideration the fact that the coke powder recovered from the CDQ equipment can be recovered at high temperatures, and that the steam from the waste heat boiler in the CDQ equipment can be used directly for reuse, and the collected coke powder is effectively utilized. and K, which provides a method for obtaining activated coke with reduced equipment costs and running costs.
〔問題点を解決するための手段および作用〕本発明の要
旨は、集塵された循環ガス中のコークス粉を、熱回収前
の循環ガスで所定温度に予熱しながら水蒸気による賦活
処理して活性コークスを得るようにしたコークス乾式消
火設備の集塵コークス粉の処理方法である。[Means and effects for solving the problems] The gist of the present invention is to activate coke powder in the collected circulating gas by preheating it to a predetermined temperature with the circulating gas before heat recovery, and then activating it with steam. This is a method for processing coke powder collected in coke dry extinguishing equipment to obtain coke.
炭素源と水蒸気による賦活反応は一般に下記の(1)式
に示すような反応が行なわれる。The activation reaction between a carbon source and water vapor is generally carried out as shown in equation (1) below.
C+H,O→CO+H,−30に−・・・・・・・・・
(1)この反応メカニズムは下記のようになる。C+H, O→CO+H, -30-・・・・・・・・・
(1) The reaction mechanism is as follows.
C−)−H,0二C(Hto)−・・・・・(2)(2
)式の反応により炭素の表面に水蒸気が吸着し、次の(
3)式によって吸着水蒸気が水素を放出する。C-)-H,02C(Hto)-...(2)(2
), water vapor is adsorbed on the surface of carbon, and the following (
3) Adsorbed water vapor releases hydrogen according to equation.
C(H,O)→H,+C(0) ・・・・・・・・・
(3)次いで(4)式の如く板層酸素が一酸化炭素とし
て炭素表面より脱離する。C(H,O)→H,+C(0) ・・・・・・・・・
(3) Next, plate layer oxygen is desorbed from the carbon surface as carbon monoxide as shown in equation (4).
C(0)→CO・・・・・・・・・(4)その際(5)
式のような副次反応が起る。C(0)→CO・・・・・・・・・(4) At that time(5)
A side reaction occurs as shown in Eq.
Co −1−HtO→CO,+ H,+ 9.65 k
d ・−団・−・・(5)最終的には(6)式といった
反応になる。Co -1-HtO→CO, + H, + 9.65 k
d・−group・・・・(5) The reaction will finally be as shown in equation (6).
2H,0+C→2H,+CO,−20,35に−・・・
・・・(6)粉コークスを原料とした場合の最適賦活温
度は第2図に示した実験結果より900℃前後である。2H,0+C→2H,+CO,-20,35-...
...(6) The optimum activation temperature when coke powder is used as the raw material is around 900°C according to the experimental results shown in Fig. 2.
一方CDQ設備の消火塔出側の循環ガスダクトにおける
1次ダストキャツチャ−内温度は900℃前後である。On the other hand, the temperature inside the primary dust catcher in the circulating gas duct on the exit side of the fire extinguishing tower of the CDQ equipment is around 900°C.
従ってこの顕熱を賦活温度に利用すれば安価に熱源を確
保できる。又賦活用水蒸気はCDQ設備の廃熱ボイラー
発生蒸気を一部利用することによってこれまた安価に熱
源が確保できる利点を有する。Therefore, if this sensible heat is used for the activation temperature, a heat source can be secured at low cost. In addition, reclaimed steam has the advantage that a heat source can be secured at a low cost by partially utilizing the steam generated by the waste heat boiler of the CDQ facility.
本発明の詳細を図面に示された実施態様例によって詳細
に説明する。The details of the invention will be explained in detail by means of exemplary embodiments shown in the drawings.
第1図に示すように、CDQ設備の1次ダストキャツチ
ャ−1前の循環ガス中には約20 r/Nrr?の粉コ
ークスが含まれ、温度は900〜1000℃であり、衝
突板2にて衝突集塵される。この集塵されたコークス粉
3はダスト排出管4より排出されるが、周囲の雰囲気温
度により低下する。このため1次ダストキャツチャ−1
後の高温の循環ガス5を一部抜き出し、チャンバーの外
熱式加熱容器6内を通し、賦活に最適な温度的900℃
を確保した。この確保は圧縮空気7のエジェクターにて
1次ダストキャツチャ−1前に吹込み、圧縮空気中O!
による燃焼熱にて自己循環的に吸熱分を補った。As shown in Fig. 1, approximately 20 r/Nrr? is contained in the circulating gas before the primary dust catcher 1 of the CDQ equipment. The coke powder is contained at a temperature of 900 to 1000°C, and is collided with a collision plate 2 to collect dust. The collected coke powder 3 is discharged from the dust discharge pipe 4, but the temperature decreases depending on the surrounding atmosphere temperature. Therefore, the primary dust catcher 1
A portion of the high-temperature circulating gas 5 is extracted and passed through the external heating container 6 of the chamber to a temperature of 900°C, which is optimal for activation.
was secured. To ensure this, compressed air 7 is blown in front of the primary dust catcher 1 using the ejector, and O!
The absorbed heat was compensated for in a self-circulating manner using the combustion heat generated by the combustion.
この温度に保ったコークス粉3を所定量排出しながら賦
活部8において廃熱ボイラーより抜き出した低圧蒸気9
を吹込み水蒸気賦活を行なつた0
賦活条件は賦活温度800〜950℃、賦活水蒸気量は
5 Kg −8team /匂−コークス粉とし、賦活
時間1.0〜l、 2 hrで行った。賦活によって活
性化されたコークス粉3は水冷管10によって100℃
以下に冷却され、所定の粒度に篩11により篩い分けら
れ活性コークス成品とした。Low pressure steam 9 extracted from the waste heat boiler in the activation section 8 while discharging a predetermined amount of coke powder 3 maintained at this temperature.
The activation conditions were as follows: activation temperature was 800 to 950°C, amount of activation steam was 5 kg -8 team/scented coke powder, and activation time was 1.0 to 1, 2 hr. The coke powder 3 activated by activation is heated to 100°C by a water cooling pipe 10.
The coke was cooled to a temperature below and sieved to a predetermined particle size using a sieve 11 to obtain an activated coke product.
このようにして得られた活性コークスをSO。The activated coke thus obtained is SO.
吸着剤として使用した。吸着能30■−8O,/1−A
Cの活性コークスを得るために従来は熱量を2.4 X
1 cl ka+g/Kf必要であったが、本発明法
によりCDQの廃熱を使用したため皆無となった。It was used as an adsorbent. Adsorption capacity 30■-8O, /1-A
Conventionally, to obtain C activated coke, the amount of heat was 2.4
1 cl ka+g/Kf was required, but this was eliminated because the waste heat of CDQ was used by the method of the present invention.
以上の如く本発明法によれば、従来CDQより大量に発
生するコークス粉の処理に困っていた廃棄物を安価な改
造設備でCDQの廃熱を利用して活性コークスを製造す
ることが可能となり、大気汚染物質、臭気成分等の吸着
剤、或は土壌改良剤等多方面で有効に活用できる優れた
諸効果を有する。As described above, according to the method of the present invention, it is now possible to produce activated coke using the waste heat of CDQ with inexpensive modified equipment, which was difficult to process due to the coke powder generated in large quantities compared to conventional CDQ. It has excellent effects that can be effectively used in many fields, such as as an adsorbent for air pollutants, odor components, etc., and as a soil conditioner.
第1図は本発明の実施例におけるCDQ設備におけるコ
ークスダストの賦活方法説明図、第2図は実験における
賦活温度とSO,吸着能力の関係図である。
1・・・1次ダストキャツチャ−2・・・衝突板3・・
・コークス粉 4・・・ダスト排出管5・・・循環
ガス 6・・・外燃式加熱容器7・・・圧縮空気
8・・・賦活部9・・・低圧蒸気 10
・・・水冷管11・・・篩。
第1図 2
御一同・
〒5=。
、10
″ 11
ン9
、に11
+
第2図
賦活温度[’C]
1次ダストキャツチャ−
衝突板
コークス粉
ダスト排出管
循環ガス
外燃式加熱容器
圧縮空気
賦活部
・低圧蒸気
水冷管
篩FIG. 1 is an explanatory diagram of a method for activating coke dust in a CDQ facility according to an embodiment of the present invention, and FIG. 2 is a diagram showing the relationship between activation temperature, SO, and adsorption capacity in an experiment. 1...Primary dust catcher-2...Collision plate 3...
- Coke powder 4... Dust discharge pipe 5... Circulating gas 6... External combustion type heating container 7... Compressed air 8... Activation part 9... Low pressure steam 10
...Water-cooled tube 11...Sieve. Figure 1 2 All of you 〒5=. , 10 ″ 11 9 , 11 + Figure 2 Activation temperature ['C] Primary dust catcher Collision plate Coke powder dust discharge pipe Circulating gas External combustion heating container Compressed air activation section/Low pressure steam Water cooling tube Sieve
Claims (1)
ガスで所定温度に予熱しながら水蒸気による賦活処理し
て活性コークスを得るようにしたコークス乾式消火設備
の集塵コークス粉処理方法。A method for processing dust collected coke powder in a coke dry extinguishing equipment, in which activated coke is obtained by preheating coke powder in collected circulating gas to a predetermined temperature with circulating gas before heat recovery and then activating it with steam.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62295818A JPH01138292A (en) | 1987-11-24 | 1987-11-24 | Treatment of collected coke powder in coke dry quencher |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP62295818A JPH01138292A (en) | 1987-11-24 | 1987-11-24 | Treatment of collected coke powder in coke dry quencher |
Publications (1)
Publication Number | Publication Date |
---|---|
JPH01138292A true JPH01138292A (en) | 1989-05-31 |
Family
ID=17825565
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP62295818A Pending JPH01138292A (en) | 1987-11-24 | 1987-11-24 | Treatment of collected coke powder in coke dry quencher |
Country Status (1)
Country | Link |
---|---|
JP (1) | JPH01138292A (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004089573A1 (en) * | 2003-04-01 | 2004-10-21 | Senju Metal Industry Co., Ltd. | Solder paste and printed board |
JP2011025152A (en) * | 2009-07-24 | 2011-02-10 | Sumitomo Metal Ind Ltd | Exhaust gas treating agent and exhaust gas treating method |
CN103361086A (en) * | 2012-04-10 | 2013-10-23 | 北京信力筑正新能源技术有限公司 | Primary dust remover for dry quenching |
-
1987
- 1987-11-24 JP JP62295818A patent/JPH01138292A/en active Pending
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2004089573A1 (en) * | 2003-04-01 | 2004-10-21 | Senju Metal Industry Co., Ltd. | Solder paste and printed board |
JP2011025152A (en) * | 2009-07-24 | 2011-02-10 | Sumitomo Metal Ind Ltd | Exhaust gas treating agent and exhaust gas treating method |
CN103361086A (en) * | 2012-04-10 | 2013-10-23 | 北京信力筑正新能源技术有限公司 | Primary dust remover for dry quenching |
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