JPS6361085A - Recovering method for excess gas in coke dry quenching equipment - Google Patents
Recovering method for excess gas in coke dry quenching equipmentInfo
- Publication number
- JPS6361085A JPS6361085A JP20533786A JP20533786A JPS6361085A JP S6361085 A JPS6361085 A JP S6361085A JP 20533786 A JP20533786 A JP 20533786A JP 20533786 A JP20533786 A JP 20533786A JP S6361085 A JPS6361085 A JP S6361085A
- Authority
- JP
- Japan
- Prior art keywords
- gas
- bag filter
- dust
- excess
- excess gas
- 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.)
- Granted
Links
- 239000000571 coke Substances 0.000 title claims abstract description 11
- 238000000034 method Methods 0.000 title claims abstract description 8
- 238000010791 quenching Methods 0.000 title abstract 2
- 230000000171 quenching effect Effects 0.000 title abstract 2
- 239000000428 dust Substances 0.000 claims abstract description 30
- 239000002253 acid Substances 0.000 claims abstract description 5
- 238000001816 cooling Methods 0.000 claims abstract description 5
- 239000012528 membrane Substances 0.000 claims description 3
- 238000011084 recovery Methods 0.000 abstract description 18
- 238000010438 heat treatment Methods 0.000 abstract description 3
- 238000007599 discharging Methods 0.000 abstract 1
- 239000007789 gas Substances 0.000 description 43
- NLXLAEXVIDQMFP-UHFFFAOYSA-N Ammonia chloride Chemical compound [NH4+].[Cl-] NLXLAEXVIDQMFP-UHFFFAOYSA-N 0.000 description 14
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 10
- 235000019270 ammonium chloride Nutrition 0.000 description 7
- 239000002737 fuel gas Substances 0.000 description 7
- 238000009833 condensation Methods 0.000 description 6
- 230000005494 condensation Effects 0.000 description 6
- 229910001873 dinitrogen Inorganic materials 0.000 description 6
- 239000004809 Teflon Substances 0.000 description 4
- 229920006362 Teflon® Polymers 0.000 description 4
- 238000007664 blowing Methods 0.000 description 4
- 230000001680 brushing effect Effects 0.000 description 3
- 239000011261 inert gas Substances 0.000 description 3
- 239000005001 laminate film Substances 0.000 description 3
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 2
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 2
- 229910002091 carbon monoxide Inorganic materials 0.000 description 2
- 238000002485 combustion reaction Methods 0.000 description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 238000010790 dilution Methods 0.000 description 2
- 239000012895 dilution Substances 0.000 description 2
- 239000000446 fuel Substances 0.000 description 2
- 239000001257 hydrogen Substances 0.000 description 2
- 229910052739 hydrogen Inorganic materials 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005406 washing Methods 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004677 Nylon Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009792 diffusion process Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000003779 heat-resistant material Substances 0.000 description 1
- RSMUVYRMZCOLBH-UHFFFAOYSA-N metsulfuron methyl Chemical compound COC(=O)C1=CC=CC=C1S(=O)(=O)NC(=O)NC1=NC(C)=NC(OC)=N1 RSMUVYRMZCOLBH-UHFFFAOYSA-N 0.000 description 1
- 229920001778 nylon Polymers 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 239000000843 powder Substances 0.000 description 1
- 238000004904 shortening Methods 0.000 description 1
- 239000010802 sludge Substances 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Landscapes
- Coke Industry (AREA)
Abstract
Description
【発明の詳細な説明】
産業上の利用分野
この発明は、コークス乾式消火設備における余剰循環ガ
スの回収時における余剰ガス回収系路の閉塞を防止でき
る回収方法に関する。DETAILED DESCRIPTION OF THE INVENTION Field of the Invention The present invention relates to a recovery method capable of preventing clogging of an excess gas recovery line during recovery of excess circulating gas in coke dry extinguishing equipment.
従来の技術
一般にコークス乾式消火設備（以下ＣＤＱという）にお
いては、冷却塔に赤熱コークスを投入し、その塔内下部
から１８０℃前後の不活性ガスを吹込むことによって赤
熱コークスを冷却し、一方熱交換によって生じた高温ガ
スは、排熱ボイラーなどの熱交換器に導入してその顕熱
の回収を行い、熱交換により１８０℃前後に降温した不
活性ガスは、除塵したのち冷却塔内下部に循環吹込まれ
ている。Conventional technology In general, in coke dry extinguishing equipment (hereinafter referred to as CDQ), red-hot coke is charged into a cooling tower, and inert gas at around 180°C is blown into the tower from the lower part of the tower to cool the red-hot coke. The high-temperature gas generated by the exchange is introduced into a heat exchanger such as an exhaust heat boiler to recover its sensible heat.The inert gas, whose temperature has been lowered to around 180℃ by heat exchange, is removed from dust and then stored in the lower part of the cooling tower. It is circulated.
前記不活性ガスは、循環使用されるため、赤熱コークス
から発生する水素やコークスの燃焼によって生じる一酸
化炭素などが混入し、爆発の危険がある。このため、循
環ガス中の可燃性ガス成分を低濃度に抑える必要があり
、従来窒素や希釈用（燃焼用）空気を用いて水素や一酸
化炭素を低濃度に希釈し、希釈により生じた余剰ガスは
、上・下放散管から大気中に放出していた。Since the inert gas is recycled, hydrogen generated from red-hot coke and carbon monoxide generated by combustion of coke may be mixed in, creating a risk of explosion. For this reason, it is necessary to suppress the combustible gas components in the circulating gas to a low concentration. Conventionally, hydrogen and carbon monoxide are diluted to a low concentration using nitrogen or dilution (combustion) air, and the surplus generated by dilution is Gas was being released into the atmosphere from the upper and lower diffusion pipes.
しかし、最近のＣＤＱにおいては、前記余剰ガスの可燃
性ガス成分を調整し、燃料カスとして回収する方式が多
く採用されている。However, in recent CDQs, a method is often adopted in which the combustible gas component of the surplus gas is adjusted and recovered as fuel residue.
しかしながら、回収される余剰ガスは、廃熱ボイラーか
らの循環ガスをサイクロンのような集塵機で除塵したあ
との約１８０°Ｃ程度のガスであり、該余剰ガス中には
、水分約１０％、ダスト２〜３ｇ／Ｎｍ’のほか、塩化
アンモニウム等が含まれているため、余剰ガスの回収に
先立ち、水洗塔あるいはサイクロンにより再度除塵し、
燃料ガス管に導入している。However, the recovered surplus gas is about 180°C after the circulating gas from the waste heat boiler is removed with a dust collector such as a cyclone, and the surplus gas contains about 10% moisture and dust. In addition to 2 to 3 g/Nm', it also contains ammonium chloride, etc., so before recovering the excess gas, it is removed again using a water washing tower or a cyclone.
It is installed in the fuel gas pipe.
しかし、余剰カス中のコークス微粉は、平均粒径７μｍ
程度と極めて微細であり、水洗塔やサイクロンによって
除塵しても、１〜２ｇ／Ｎｍ３程度のダストが残留し、
燃料ガス管に至るまでの間に冷却されて余剰ガス中の水
分が凝縮してドレンを生成し、それにダストが付着して
管路を閉塞し、余剰ガスの回収に支障を来すことがしば
しばある。However, the fine coke powder in the surplus waste has an average particle size of 7 μm.
Even if the dust is removed using a water washing tower or cyclone, about 1 to 2 g/Nm3 of dust remains.
Moisture in the surplus gas condenses as it cools down to the fuel gas pipe, creating condensate, and dust often adheres to it, clogging the pipe and hindering recovery of the surplus gas. be.
発明の目的
この発明は、前記ＣＤＱにおける余剰ガス回収系におけ
る管路の閉塞問題を解消し、長期間に亘って余剰ガスの
連続回収ができるＣＤＱにおける余剰ガス回収方法を提
供するものである。OBJECTS OF THE INVENTION The present invention provides a method for recovering surplus gas in a CDQ, which solves the problem of clogging of pipes in the surplus gas recovery system in the CDQ and allows continuous recovery of surplus gas over a long period of time.
発明の閉成
本発明者等は、前記ＣＤＱの余剰ガス回収系における閉
塞問題を解消すべく、バグフィルタ−での除塵テストを
実施したが、バグのプレコート層表面に塩化アンモニウ
ムが結露し、ダストと共に固い付着層が生成し、集塵ダ
ストの払い落としに時間を要し、又、集塵機やダクト内
にも同様の付着層が形成され運転不能であった。Closure of the Invention The present inventors conducted a dust removal test using a bag filter in order to solve the clogging problem in the surplus gas recovery system of the CDQ, but ammonium chloride condensed on the surface of the precoat layer of the bag, and the dust A hard adhesion layer was formed, and it took time to shake off the collected dust, and a similar adhesion layer was also formed inside the dust collector and duct, making it impossible to operate.
さらに試験・研究を重ねた結果、バグ表面に耐熱、耐酸
性のフィルター膜を形成したバグを使用し、かつ、バグ
フィルタ−に至る管路、バグフィルタ−本体、払い落と
し用気体を加熱することにより、前記閉塞問題を解消で
きることを究明し、この発明に想到した。As a result of further testing and research, we found that we use a bag with a heat-resistant and acid-resistant filter film formed on the bag surface, and that we heat the pipe leading to the bag filter, the bag filter body, and the gas for blowing off. The inventors have found that the above-mentioned blockage problem can be solved, and have come up with the present invention.
すなわち、この発明は、ＣＤＱの冷却塔から排出される
余剰循環ガスの回収に際し、余剰ガスの回収系路に耐熱
、耐酸性のフィルター膜をコーティングしたバグフィル
タ−を設置し、該バグフィルタ−に至るダクト及びバグ
フィルタ−を間接加熱すると共に、ダスト払い落とし用
気体の加熱器を設置し、余剰ガスがバグフィルタ−から
排出されるまでの間の温度低下を防止し、かつバグのダ
スト払い落とし時の温度低下を防止して除塵することを
特徴とするコークス乾式消火設備の余剰ガス回収方法で
ある。That is, this invention installs a bag filter coated with a heat-resistant and acid-resistant filter membrane in the surplus gas recovery line when recovering surplus circulating gas discharged from a CDQ cooling tower, and In addition to indirectly heating the ducts and bag filters, a gas heater for dust removal is installed to prevent the temperature from dropping until excess gas is discharged from the bag filter, and to remove dust from the bugs. This is a method for recovering surplus gas from coke dry extinguishing equipment, which is characterized by removing dust while preventing a temperature drop during operation.
なあ、この発明における払い落とし用の気体としては、
加熱した窒素ガスを使用する。又、バグ表面へのコーテ
イング膜としては、例えばテフロンラミネート膜が使用
できる。By the way, the gas for brushing off in this invention is
Use heated nitrogen gas. Further, as a coating film on the surface of the bug, for example, a Teflon laminate film can be used.
この発明においては、バグフィルタ−に至るまでのダク
ト及びバグフィルタ−を間接加熱することにより、余剰
ガスの温度低下が防止されるので水分の凝縮が防止され
、又、余剰ガス中に含有される塩化アンモニウムの結露
も防止されるので、ダクト、バグフィルタ−内面への塩
化アンモニウムの結露によるダクト付着が防止できる。In this invention, by indirectly heating the duct leading to the bag filter and the bag filter, the temperature of the surplus gas is prevented from decreasing, thereby preventing moisture from condensing, and also preventing the moisture contained in the surplus gas from condensing. Since condensation of ammonium chloride is also prevented, adhesion of ammonium chloride to the inner surface of the duct and bag filter due to condensation can be prevented.
しかもバグ表面への固い付＠層の形成が防止でき、払い
落としが容易となり、払い落とし用の窒素消費量が少な
く、払い落とし時間も短縮できる。Moreover, the formation of a hard layer on the surface of the bug can be prevented, making it easier to brush off, reducing the amount of nitrogen consumed for brushing off, and shortening the time required for brushing off.
さらに、バグフィルタ−により除塵するため、余剰ガス
中のダストがほぼ完全に除去でき、燃料ガス管へ至るま
での管路の閉塞が防止でき、長期間に亘って余剰ガスを
安定して回収できる。Furthermore, since dust is removed using a bag filter, dust in the surplus gas can be almost completely removed, preventing blockages in the pipes leading to the fuel gas pipe, and allowing stable recovery of surplus gas over a long period of time. .
発明の図面に基づく開示
以下この発明の詳細を実施の一例を示す図面に基づいて
説明する。Disclosure of the Invention Based on Drawings The details of the present invention will be explained below based on drawings showing an example of implementation.
第１図は、この発明の装置の一例を示すもので、図示し
ないＣＤＱの循環ガス系からの余剰ガス（１）は、余剰
ガス（１）の回収ブロワ−（２）を介してバグフィルタ
−（３）に導入される。該バグフィルタ−（３）及びバ
グフィルタ−（３）に至るまでのダクト（４）には、ス
チームトレース（５）が付設され、又、バグフィルタ−
（３）本体にもスチームトレース（６）が施されている
。バグフィルタ−（３）内のバグ（７）は耐熱性の材質
（例えば耐熱ナイロン等）で、表面にはテフロンラミネ
ート膜がコーティングされている。又、バグフィルタ−
（３）の上部には、窒素ガス吹込み管（８）が加熱器（
９）を介して接続されている。FIG. 1 shows an example of the apparatus of the present invention, in which surplus gas (1) from a circulating gas system of a CDQ (not shown) is passed through a recovery blower (2) for surplus gas (1) to a bag filter. (3) is introduced. A steam trace (5) is attached to the bag filter (3) and the duct (4) leading to the bag filter (3).
(3) Steam tracing (6) is also applied to the main body. The bag (7) in the bag filter (3) is made of a heat-resistant material (for example, heat-resistant nylon, etc.), and its surface is coated with a Teflon laminate film. Also, bug filter
At the top of (3), a nitrogen gas blowing pipe (8) is connected to the heater (
9).
バグフィルタ−（３）からの除塵された余剰ガスは、ダ
クト（１０）を介し燃料ガス管（１１）に導入されるよ
うに構成されている。Excess gas from which dust has been removed from the bag filter (3) is introduced into the fuel gas pipe (11) via the duct (10).
一方、バグフィルタ−（３）の底部には、排出弁（１２
） （１３）を介しファン（１４）によって管路（１５
）からの大気と共に、空気輸送されてゲス［−ビン（１
６）に搬送される。On the other hand, a discharge valve (12) is located at the bottom of the bag filter (3).
) (13) and the fan (14) through the conduit (15).
) is transported by air together with the atmosphere from Ges[-bin (1
6).
上記のごとく構成したから、ＣＤＱからの余剰ガス（１
）は、回収ブロワ−（２）によって吸引されてバグフィ
ルタ−（３）に導入され、テフロンラミネート膜でコー
ティングしたバグ（７）で除塵される。この間のダクト
（４）およびバグフィルタ−（３）はスチームトレース
（５）（６）により加熱されているので、余剰ガス（１
）は、循環系で分流した時の温度である１５０〜２００
’Ｃを保持し、ダクト（４）及びバグフィルタ−（３）
内での水分の凝縮や塩化アンモニウムの結露が防止され
る。Since the configuration is as above, surplus gas (1
) is sucked by a recovery blower (2) and introduced into a bag filter (3), where it is removed by a bag (7) coated with a Teflon laminate membrane. During this time, the duct (4) and bag filter (3) are heated by the steam traces (5) and (6), so the excess gas (1
) is the temperature when the flow is divided in the circulation system, 150 to 200
Hold 'C, duct (4) and bag filter (3)
This prevents moisture condensation and ammonium chloride condensation inside the tank.
除塵された余剰ガス（１）は、ダクト（１０）を介して
燃料ガス管（１１）に導かれ、燃料ガスとして使用され
る。The excess gas (1) from which dust has been removed is guided to the fuel gas pipe (11) via the duct (10) and used as fuel gas.
バグ（刀で捕集されたダストは、加熱器（９）で加熱さ
れた窒素ガス吹込み管（８）からの窒素ガスによって払
い落とされる。この際窒素ガスが加熱されているため、
塩化アンモニウムのバグ而への結露か防止される。払い
落とされたダストは、排出弁（１２Ｈ１３）から排出さ
れ、ファン（１４）により管路（１５）からの大気と共
にダストビン（１６）に搬送され、再利用に供される。The bugs (dust collected by the sword) are brushed off by nitrogen gas from the nitrogen gas blowing pipe (8) heated by the heater (9). At this time, since the nitrogen gas is heated,
Condensation on ammonium chloride bugs is prevented. The dust that has been brushed off is discharged from the discharge valve (12H13), and is conveyed to the dust bin (16) by the fan (14) together with the atmosphere from the pipe (15) for reuse.
余剰ガス（１）から捕集されるゲス１へは、従来に比較
して水分・塩化アンモニウムの結露による凝集がないた
め、微細粉として扱えるため空気輸送が可能で、しかも
ダストによる摩耗か少なくなるという特徴をＦｉする。The gas 1 collected from the surplus gas (1) does not aggregate due to condensation of moisture and ammonium chloride compared to conventional methods, so it can be handled as a fine powder and can be transported by air, and there is less wear due to dust. Fi is the characteristic.
ざらに、使用するバグ（力の表面にテフロンラミネート
膜をコーティングしたので、プレコー１−が不要であり
、操作が極めて簡単となる利点がある。In addition, since the surface of the bag used is coated with a Teflon laminate film, there is no need for a precoat, which has the advantage of extremely simple operation.
実 施 例
前記第１図の装置を使用し、余剰ガスを９００ＯＮｍ３
／ｈｒで導入して除塵後、燃料カス答までの距離５００
ｍで余剰ガスを回収した。Example: Using the equipment shown in Figure 1 above, excess gas was pumped to 900 ONm3.
Distance to fuel sludge after introduction at /hr and dust removal: 500
Excess gas was collected at m.
その結果を、サイクロンにより除塵した後、回収する比
較例と比較して下表に示す。The results are shown in the table below in comparison with a comparative example in which dust was removed using a cyclone and then collected.
上表に示すとあり、この発明の実施例の場合は、２ケ月
経過後も余剰ガス回収系での圧損か僅かであり、安定し
た余剰ガスの回収が可能である。これに対し、比較例の
場合は、殆ど１ケ月に１度の回収系の掃除が必要であり
、本願発明の効果は明白である。As shown in the above table, in the case of the embodiment of the present invention, there is only a slight pressure loss in the surplus gas recovery system even after two months have passed, and stable recovery of surplus gas is possible. On the other hand, in the case of the comparative example, it is necessary to clean the recovery system almost once a month, and the effect of the present invention is obvious.
第１図はこの発明の実施において使用される装置の一例
を示す系統図でおる。
１・・・余剰ガス、２・・・回収ブロワ−１訃・・バグ
フィルタ−１４，１０・・・ダクト、５，６・・・スチ
ームトレース、７・・・バグ、８・・・窒素ガス吹込み
管、９・・・加熱器、１１・・・燃料ガス管、１２．１
３・・・排出弁、１４・・・ファン、１５・・・管路、
１６・・・ダストビン。FIG. 1 is a system diagram showing an example of an apparatus used in carrying out the present invention. 1... Surplus gas, 2... Recovery blower - 1... Bag filter - 14, 10... Duct, 5, 6... Steam trace, 7... Bug, 8... Nitrogen gas Blowing pipe, 9... Heater, 11... Fuel gas pipe, 12.1
3...Discharge valve, 14...Fan, 15...Pipe line,
16...Dust bin.
Claims (1)
循環ガスを回収するに際し、余剰ガス回収系路に耐熱、
耐酸性のフィルター膜をコーティングしたバグフィルタ
ーを設置し、該バグフイルターに至るダクト及びバグフ
ィルターを間接加熱すると共に、ダスト払い落とし用気
体の加熱器を設置し、余剰ガスがバグフィルターから排
出されるまでの間の温度低下を防止し、かつバグのダス
ト払い落とし時の温度低下を防止して除塵することを特
徴とするコークス乾式消火設備の余剰ガス回収方法。1. When recovering surplus circulating gas discharged from the cooling tower of coke dry extinguishing equipment, heat-resistant,
A bag filter coated with an acid-resistant filter membrane is installed, and the duct leading to the bag filter and the bag filter are indirectly heated, and a gas heater for dust removal is installed, and excess gas is discharged from the bag filter. A method for recovering surplus gas from a coke dry fire extinguishing equipment, which is characterized by preventing a temperature drop during the process and removing dust by preventing a temperature drop during dust removal from bugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20533786A JPS6361085A (en) | 1986-09-01 | 1986-09-01 | Recovering method for excess gas in coke dry quenching equipment |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP20533786A JPS6361085A (en) | 1986-09-01 | 1986-09-01 | Recovering method for excess gas in coke dry quenching equipment |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS6361085A true JPS6361085A (en) | 1988-03-17 |
| JPH0554879B2 JPH0554879B2 (en) | 1993-08-13 |
Family
ID=16505239
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP20533786A Granted JPS6361085A (en) | 1986-09-01 | 1986-09-01 | Recovering method for excess gas in coke dry quenching equipment |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS6361085A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4201115A1 (en) * | 1992-01-17 | 1993-07-22 | Hoelter Heinz | Surplus coke cooling gas utilisation - comprises filtering dust and wet cooling sepg. water using droplet separator and feeding water to clarification plant |
| JP2020521822A (en) * | 2017-05-31 | 2020-07-27 | 河南竜成煤高効技術応用有限公司Ｈｅｎａｎ Ｌｏｎｇｃｈｅｎｇ Ｃｏａｌ Ｈｉｇｈ Ｅｆｆｉｃｉｅｎｃｙ Ｔｅｃｈｎｏｌｏｇｙ Ａｐｐｌｉｃａｔｉｏｎ Ｃｏ．， Ｌｔｄ． | Coal pyrolysis processor |
-
1986
- 1986-09-01 JP JP20533786A patent/JPS6361085A/en active Granted
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4201115A1 (en) * | 1992-01-17 | 1993-07-22 | Hoelter Heinz | Surplus coke cooling gas utilisation - comprises filtering dust and wet cooling sepg. water using droplet separator and feeding water to clarification plant |
| JP2020521822A (en) * | 2017-05-31 | 2020-07-27 | 河南竜成煤高効技術応用有限公司Ｈｅｎａｎ Ｌｏｎｇｃｈｅｎｇ Ｃｏａｌ Ｈｉｇｈ Ｅｆｆｉｃｉｅｎｃｙ Ｔｅｃｈｎｏｌｏｇｙ Ａｐｐｌｉｃａｔｉｏｎ Ｃｏ．， Ｌｔｄ． | Coal pyrolysis processor |
Also Published As
| Publication number | Publication date |
|---|---|
| JPH0554879B2 (en) | 1993-08-13 |
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