JPS60104188A - Coal gasification process - Google Patents

Coal gasification process

Info

Publication number
JPS60104188A
JPS60104188A JP21204683A JP21204683A JPS60104188A JP S60104188 A JPS60104188 A JP S60104188A JP 21204683 A JP21204683 A JP 21204683A JP 21204683 A JP21204683 A JP 21204683A JP S60104188 A JPS60104188 A JP S60104188A
Authority
JP
Japan
Prior art keywords
coal
slag
gasification process
gas
air
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
Application number
JP21204683A
Other languages
Japanese (ja)
Other versions
JPH0472878B2 (en
Inventor
Yoshitaka Nitta
新田 義孝
Yuzo Shirai
裕三 白井
Shigeo Suhara
須原 繁雄
Toshio Haneda
羽田 寿夫
Koji Iwahashi
岩橋 康二
Nobuaki Murakami
信明 村上
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mitsubishi Heavy Industries Ltd
Original Assignee
Mitsubishi Heavy Industries Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Mitsubishi Heavy Industries Ltd filed Critical Mitsubishi Heavy Industries Ltd
Priority to JP21204683A priority Critical patent/JPS60104188A/en
Publication of JPS60104188A publication Critical patent/JPS60104188A/en
Publication of JPH0472878B2 publication Critical patent/JPH0472878B2/ja
Granted legal-status Critical Current

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  • Treating Waste Gases (AREA)

Abstract

PURPOSE:To effect lower slag viscosity and easier slag discharge, by charging the high-temperature zone in gasification furnace with crude gas desulfurizing agent waste in jet stream type coal gasification process. CONSTITUTION:In a slag tap-type coal gasification process in which feedstock coal is gasified by air and/or exygen in such amount(s) as to be less stoichiometrically equivalent than that of the coal to produce a gas consisting mainly of CO and H2, the high-temperature zone of the gasification furnace is charged with crude gas desulfurizing agent waste to effect lower slag viscosity and easier slag discharge operation.

Description

【発明の詳細な説明】 本発明はイ」駄カス化プロセスに賃、す、 !1′4に
噴流しく式のね炭ガス化プロセスに関するものである。
[Detailed Description of the Invention] The present invention is designed to improve the waste production process! The present invention relates to a jet-type charcoal gasification process.

一般に1石炭を空気或いは酸素等のカス化剤でガス化し
てi」燃性ガスを生成するイコ炭ガス化装置0は、生成
カスの用途に応じて袖々のガス化力式が葱す、型式別で
は例えば噴流床式、流動床式、固足床式青かめる。賄流
床式は微粉炭をカス化剤と一緒にノズルより噴出してカ
ス化させる方式である。
In general, the Icocoal gasifier 0, which generates combustible gas by gasifying coal with a cassifying agent such as air or oxygen, has various gasification power types depending on the use of the produced scum. By type, examples include spouted bed type, fluidized bed type, and fixed bed type. The flow bed type is a method in which pulverized coal is jetted out from a nozzle together with a casing agent to turn it into scum.

第1図1−1従来の噴流床式不11文カス化プロセスの
1況明I〆Iであり、第1図においてlはUA流床式イ
ー】炭カス化炉である。この’!f’1I)lF、床式
石炭ガス化炉(以トガス化炉という。)li、1.ガス
化反応に必塾な簡謳域を形成するコンパスタ部2とコン
パスタHill 2の高温を414用して微粉炭をガス
化マ゛(ぜるり“122部3とから構成されている。コ
ンパスタrXB 2には微粉炭を空気等のガス化剤と一
、Ii?iにbat出する噴出ノズル4が設けられてお
り。
Figure 1-1 is a diagram of a conventional spouted bed charcoal casing process; in Figure 1, 1 is a UA fluidized bed charcoal casing furnace. this'! f'1I)lF, floor type coal gasifier (hereinafter referred to as gasifier) li, 1. It consists of a comparator section 2 which forms a simple area necessary for the gasification reaction, and a comparator section 3 that gasifies pulverized coal by using the high temperature of the comparator Hill 2. 2 is provided with an ejection nozzle 4 for discharging pulverized coal and a gasifying agent such as air into Ii?i.

5.6はそれぞれ微粉原反0・ガス化剤の供給ライノて
める。なお、コンパスタ2での空気比(空気と微粉炭の
化学量論比)は通常06〜07に調整されている。微粉
炭とガス化剤はまた。
5.6 is the fine powder raw material 0 and gasifying agent supply rhinoceros, respectively. Note that the air ratio (stoichiometric ratio of air and pulverized coal) in the comparator 2 is normally adjusted to 06 to 07. Also pulverized coal and gasifier.

リアクタ下部のノズル7よりも供給され全体としての(
コンパスタ部とリアクタ部に供給され、る空気と微粉炭
の化学量論比)空気比04〜06に調整される。8,9
はそ扛ぞれカス化剤、微粉炭の供給ラインである。捷だ
、リアクタ3の土部VCid生成ガスを取出す生成ガス
取出しライン10.未反応のチャーを回収するザイクロ
/lLチャー回収うイノ12とが設り−られCいる。こ
のチャー回収ライン12の細端は37712部2に接続
されており1回収された未反応のチャーは補助燃料とL
7てライン13(i=i山して少量のガス化剤とともr
(コノバスタ部2に供にざねる。一方、生成ガスは集塵
装置4.101 + I’llj式脱硫装置102を経
て精製プれ、イ#製ガスとし7てライ/103から所肢
の目的に供される。
It is supplied from the nozzle 7 at the bottom of the reactor, and the total (
The stoichiometric ratio of air and pulverized coal supplied to the comparator section and the reactor section is adjusted to an air ratio of 04 to 06. 8,9
These are the supply lines for the slag agent and pulverized coal, respectively. 10. Take out the produced gas from the Dobe VCid produced gas in the reactor 3. A Zyclo/1L char recovery unit is provided to recover unreacted char. The narrow end of this char recovery line 12 is connected to 37712 section 2, and the recovered unreacted char is used as auxiliary fuel and L
7 and line 13 (i=i mountain and r with a small amount of gasifying agent)
(The generated gas is sent to the Conobastar section 2. On the other hand, the generated gas is purified through the dust collector 4.101 + I'llj type desulfurization device 102, and is purified as I# gas 7 from Rai/103 for the desired purpose. served.

このように構成したガス化炉によって37712部2で
は(ダF粉炭を燃焼してガス化反応(吸熱反応)に必要
な高温域を形hνし、リアクタ部3では噴出ノズル7よ
りlIβ出された微粉炭を37712部2の燃焼熱(1
500〜1700℃)Kよって空気等のガス化剤でガス
化させ、水素、−酸化炭素、メタ/等を主とする生成ガ
スを得る。
With the gasifier configured in this way, in the 37712 section 2, the high temperature region necessary for the gasification reaction (endothermic reaction) is formed by burning the powdered coal, and in the reactor section 3, the Combustion heat of 37712 parts 2 of pulverized coal (1
500 to 1700° C.), gasification is performed using a gasifying agent such as air to obtain a generated gas mainly containing hydrogen, carbon oxide, meta/etc.

なおコンパスタ部2で燃幼きれた微粉炭とチャー中の灰
分は溶融スラグとなって溶融スラグ4J1出口14から
排出きれ、水中に(イiして回収きれる。
Incidentally, the pulverized coal burned in the comparator section 2 and the ash in the char become molten slag, which is completely discharged from the molten slag 4J1 outlet 14 and recovered in water.

以上(へ)、l¥4υiし床ガス化炉の一形式について
略述し/こものであるか、現時点−C(弓このカス化炉
本体についても研死課題は渋妊れており、炉底かもの円
滑7Iスラグ排出もその一つである。実際&川原なと一
点か商く粘性が低い灰成分を有するイ」炭については、
コンバスタ内を非常な高lfi’+に糾持するなとスラ
グ排出に」夫を決する。
This is a brief description of a type of bed gasifier that costs ¥4υi. Kamono Smooth 7I slag discharge is one of them.Actually, Kawahara and Kawahara have a low viscosity and low ash component.
My husband decided not to maintain the inside of the combustor at a very high lfi'+ or else the slag would be discharged.

木沖明渚らはスラグの円滑な排出方法についで6a、・
、5: (ill死を小ねた結果、ガス化炉に後置きれ
るクリ7ナノゾ系装置の一つである脱硫装陥からの使用
済み廃棄脱硫剤が、スラグ粘度を下はスラグ排出を容易
にする効果をもつことを見出し、この知見に基づいて本
発明にJljつだものである。1だ2本発明は処分の困
難な硫黄分含有の該使用済み脱硫剤の廃棄を不要とする
利点をもイ1し、工業上極めて有用な発明である。
Akiyoshi Kioki et al. 6a.
, 5: (As a result of reducing illumination, the slag viscosity of the used waste desulfurization agent from the desulfurization system, which is one of the Kuri7 nanozo system installed after the gasification furnace, is lowered, making it easier to discharge the slag.) Based on this knowledge, we have developed the present invention.1 and 2 The present invention has the advantage that it is not necessary to dispose of the used desulfurizing agent containing sulfur, which is difficult to dispose of. This is an industrially extremely useful invention.

すなわち、不発明は原料である石炭を、その化学量論量
より少量の空気および/又は酸素によってガス化づせ、
 Co 、 II2を主成分とするガスをイ:Iるスラ
グタノプカ式のイ1炭ガス化プロセスにおいて、粗製カ
ス中の硫黄分を除去する〕ζめの脱硫剤の使用済み廃棄
物を、ガス化炉の高温部に投入することを勃徴とする噴
流床方式石炭ガス化プロセスを43H案するものである
That is, the invention gasifies the raw material coal with a smaller amount of air and/or oxygen than its stoichiometric amount,
In the slagtanopka type 1 coal gasification process, in which gas containing Co and II2 as main components is removed, the sulfur content in the crude residue is removed. 43H proposes a spouted bed type coal gasification process in which coal is introduced into the high-temperature part of the coal gasification process.

以下図面により本発明の実施態様例について詳細に説明
する。第2図は本発明の1実施態様例の説明図である。
Embodiments of the present invention will be described in detail below with reference to the drawings. FIG. 2 is an explanatory diagram of one embodiment of the present invention.

第2図において第1図と同−拘号のものは第1図と同一
の機能を治する部分を7」くず。第2図においてライン
15は和製のガス化生成ガスであり、主要成分であるc
o 、 112 。
In Figure 2, the part with the same number as in Figure 1 has the same function as that in Figure 1. In Fig. 2, line 15 is the Japanese-made gasification product gas, and the main component is c.
o, 112.

OH4、CO2、1+20 、 N2のほか、ダスト1
128 、 NH3%の微M: #’i分を含む。これ
らの微量成分は生成ガスをどのような目的例えば、コン
バインド発電用のガスタービン燃料、都市ガス燃相、化
学原料として使用ずゐにせよ、相当低一度に迄低減する
必要かのる。16は昂”屈゛脱屋装置てりり、 17は
捕集したダストの抜き出しラインである。18 、19
iJ、1128除去用の乾式脱硫装置6で必り1図では
2塔の流面J1木ノ東&;シl’)中力式の例治= y
Ik しているが。
In addition to OH4, CO2, 1+20, N2, dust 1
128, NH3% fine M: Contains #'i. These trace components need to be reduced to a fairly low level regardless of the purpose for which the produced gas is used, such as gas turbine fuel for combined power generation, city gas combustion phase, or chemical raw material. Reference numeral 16 indicates an evacuation device, and reference numeral 17 indicates an extraction line for the collected dust. 18, 19
iJ, 1128 In the dry desulfurization equipment 6 for removal, the flow surface of the two towers J1 Kinohigashi &;Shil') Example treatment of the neutral force type = y
Ik, but.

これに限られるものではなく1本発明のプロセスでは勿
論他の型式例えは、固定床間欠切替え方式も適用M■能
である。18(dl12s吸収装置でめり、 19は吸
収した1128をI与生用ガス(例えば。
The process of the present invention is not limited to this, and of course, other types of fixed bed intermittent switching systems can also be applied. 18 (dl12s absorption device), 19 absorbs 1128 to I gas (for example.

空気)によって放出させ、脱硫剤活性を復帰させること
を目的とする書生装置4である。また。
This is a writing device 4 whose purpose is to release the desulfurizing agent by air) and restore the desulfurizing agent activity. Also.

20 v=丙牛用カスの供給ライン、 21ばS分目収
装::′4−へ4゛1」る商(農度のS分ケ含不するカ
スの流路であ◇。
20 v=supply line of waste for beef cattle, 21 is the quotient of S part collection::'4-4゛1'' (the S part of the agricultural rate is the flow path of waste that does not contain ◇).

こうして脱脂、脱硫の過程衾紅て精浄となった和製ガス
は流路20を経て上記した所要の目的に供せられる。
In this way, the Japanese gas which has become red and purified during the degreasing and desulfurization process passes through the flow path 20 and is used for the above-mentioned required purpose.

ここで脱硫剤としては一般に、酸化鉄(Fe203)+
アルカリ炭酸塩((jao03 、 MgCO3) 、
酸化亜鉛(znO)。
Here, the desulfurization agent is generally iron oxide (Fe203) +
Alkaline carbonate ((jao03, MgCO3),
Zinc oxide (znO).

酸化銅(Cub)なとが用いられるが1時間の経過とと
もにこれらの一部は活性を失し、廃棄せざるを得す、系
外へ排出することが必要となる。
Copper oxide (Cub) is used, but some of these lose their activity over the course of one hour and must be discarded or discharged from the system.

22はその廃棄物排出ラインであるが、この使用ずみ脱
硫剤は8分及び操作条件によっては微少−の01分、 
ON分等を含み公害防止上容易に環境へは戻しケ1Fい
ものである。
22 is the waste discharge line, and this used desulfurization agent is discharged for 8 minutes, and depending on the operating conditions, a minute amount of 0.1 minutes,
This includes ON components, which can be easily returned to the environment in order to prevent pollution.

本発明では、これをコンパスタ部2に供給し微粉炭或い
はチャーとともにコンパスタにおいて高温処理する。こ
れにより、スラグ粘度は1ハ。
In the present invention, this is supplied to the comparator section 2 and subjected to high temperature treatment in the comparator together with pulverized coal or char. As a result, the slag viscosity is 1 Ha.

下し、脱イメE廃棄物の処理も不要となる。スラグ粘度
の低下はガス化炉の円滑な連続運転を可能とするととも
に、コンパスタをさほど高温度に維持する必要がなくな
るため、コンパスタでのIり1要空気楚が減少し、結果
的に生成ガスの発熱量の上昇、全体効率の向上につなが
りプロセス上極めて望ましいことである。勿論廃棄脱硫
剤中の1・゛6分、 Ca分などはスラグ中に捕捉され
る。
There is also no need to dispose of the de-imaged E waste. The reduction in slag viscosity enables smooth continuous operation of the gasifier, and since it is no longer necessary to maintain the comparator at a very high temperature, the amount of air required in the comparator is reduced, and as a result, the produced gas This is extremely desirable in terms of the process, as it increases the amount of heat generated and improves overall efficiency. Of course, the 1.6% Ca content in the waste desulfurization agent is captured in the slag.

丑だ、8分、 ct分、 ON分等は生成ガス中に放出
されるが、これらは主流中の各成分量に比較すれば極め
て少量であシ問題はない。
Oxygen, 8%, ct, ON, etc. are released into the generated gas, but these are extremely small amounts compared to the amount of each component in the mainstream, so there is no problem.

以上詳細に説明したように本発明のプロセスによれば・
噴流床式ガス化炉の最も大きな課題の−である。スラグ
排出特性を改善しスラグの排出を円滑にし、併せて廃棄
脱硫剤の処理も不ものである。
As explained in detail above, according to the process of the present invention,
This is the biggest problem with entrained bed gasifiers. The slag discharge characteristics are improved, slag discharge is smoothed, and waste desulfurization agent can be disposed of at the same time.

以下、実施例により本発明の効果について詳罰HKi兄
明する。
Hereinafter, the effects of the present invention will be explained in detail with reference to Examples.

実MII例1 捷ず小型の固定床式脱硫装置(処理ガス量15Nl1分
)を試作し、脱硫テストを実施しだ。脱硫剤としては粉
末状酸化鉄(Fe203)を用いた。
Actual MII Example 1 We prototyped a compact fixed bed desulfurization equipment (processing gas amount: 15Nl per minute) and conducted a desulfurization test. Powdered iron oxide (Fe203) was used as the desulfurizing agent.

約250時間の連続テストの後、脱硫性能が初期の80
%程度に低下したので、これを100 kg/I(の処
理能力を有する常圧型晴流床ガス化炉に微粉炭(豪州一
般炭)とともに、 ’′2kg/IIの速度で約1時間
投入した。
After approximately 250 hours of continuous testing, the desulfurization performance reached the initial level of 80.
%, this was fed into an atmospheric pressure clear bed gasifier with a processing capacity of 100 kg/I (Australian thermal coal) at a rate of 2 kg/II for about 1 hour. .

その結果、投入MiJには、コンパスタを篩温度(約t
4ooC)に維持するため、全体の空気比が056に相
当する楡の空気がガス化剤として必要でめったが、脱硫
廃棄物の添加によってスラグの粘1」1か低寸する効果
により、全体のりと気化か047で円滑な運転が可能と
なり、捷だ生成ガスの発熱量も880 K ca l/
N+y?からi、012 Kcal/Nmに向上した。
As a result, in the input MiJ, comparator was added to the sieve temperature (approximately t
4ooC), elm air with an overall air ratio of 0.56 was required as a gasifying agent, which was rare, but the addition of desulfurization waste reduced the viscosity of the slag by 1. The vaporization allows smooth operation, and the calorific value of the vaporized gas is 880 Kcal/
N+y? It improved from i,012 Kcal/Nm.

なお実験後、とり出したスラグの粘IJtHを訓測した
所、脱硫廃棄物添加前のスラグの粘度がx、4oo’C
において230ポアズであったのに対し、師加俊は同一
温度において115ホアズであり粘度が低下していた。
After the experiment, we measured the viscosity IJtH of the slag taken out, and found that the viscosity of the slag before adding desulfurization waste was x, 4oo'C.
The viscosity was 230 poise at the same temperature, while the viscosity of Shikatoshi was 115 poise at the same temperature.

実施例2 実施例1と殆ど同一の操作を脱硫剤として粉状ドロマイ
トを用いて実施した。使用済みドロマイトのガス化炉コ
ンパスタ部への添加1/Cより。
Example 2 Almost the same operation as in Example 1 was carried out using powdered dolomite as the desulfurization agent. From addition 1/C of used dolomite to the comparator section of the gasifier.

炉ノMからのスラグの流下が楡めて円滑となり。The flow of slag from the furnace nozzle becomes smoother.

生成ガスの発熱量も投入前876 Kcal/Niがら
1.005 Kcal/Nrrrと向上した。
The calorific value of the generated gas also improved from 876 Kcal/Ni before injection to 1.005 Kcal/Nrrr.

【図面の簡単な説明】[Brief explanation of the drawing]

第1図は従来のIIJ流床式不J炭ガス化プロセスの説
明図、第2図は不発明の1実施態様例の説明図である。 l・1す“Y流+A、弐イl炭カス化炉、2・・・コン
パスタ部、3・・・リアクタ部、5.9 ・微粉炭供給
ライン・ 6・ 8 ゛ガス化剤供λIIライ/、18
・・ll2S吸収装置&、 + I 9・・再生装置、
22・廃棄物排出ライン。
FIG. 1 is an explanatory diagram of a conventional IIJ fluid bed type non-J coal gasification process, and FIG. 2 is an explanatory diagram of an example of an embodiment of the invention. 1・1"Y flow + A, 2nd coal casing furnace, 2... Compaster section, 3... Reactor section, 5.9 ・Pulverized coal supply line・ 6. 8 ゛Gasifying agent supply λII line /, 18
・・ll2S absorption device & + I 9・・regeneration device,
22. Waste discharge line.

Claims (1)

【特許請求の範囲】 原料でめる石炭を、その化学鼠論漏より少量の空気ふ・
よひ/又は酸素によってガス化さぜ。 Co、 n2を主成分とするガスを得るスラクタノプ方
式の石炭ガス化プロセスにおいて、和製ガス中の硫黄分
を除去するための脱硫剤の使用槓み廃棄物を、ガス化炉
の市温部に投入することを特徴とする哨ヒ1〕床方式石
灰ガス化プロセス。
[Claims] Coal used as a raw material is treated with a small amount of air
Or gasify it with oxygen. Use of desulfurization agent to remove sulfur content from Japanese gas in the sractanop method coal gasification process to obtain gas whose main components are Co and N2.Pumped waste is fed into the city temperature section of the gasification furnace. 1) Bed method lime gasification process.
JP21204683A 1983-11-11 1983-11-11 Coal gasification process Granted JPS60104188A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP21204683A JPS60104188A (en) 1983-11-11 1983-11-11 Coal gasification process

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP21204683A JPS60104188A (en) 1983-11-11 1983-11-11 Coal gasification process

Publications (2)

Publication Number Publication Date
JPS60104188A true JPS60104188A (en) 1985-06-08
JPH0472878B2 JPH0472878B2 (en) 1992-11-19

Family

ID=16615968

Family Applications (1)

Application Number Title Priority Date Filing Date
JP21204683A Granted JPS60104188A (en) 1983-11-11 1983-11-11 Coal gasification process

Country Status (1)

Country Link
JP (1) JPS60104188A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6137895A (en) * 1984-07-19 1986-02-22 テキサコ・デベロツプメント・コーポレーシヨン Production of raw gas stream
JPS6319550U (en) * 1986-07-21 1988-02-09
JPS6369144U (en) * 1986-10-23 1988-05-10
JPS63135491A (en) * 1986-11-27 1988-06-07 Babcock Hitachi Kk Coal gasification and desulfurization method

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6137895A (en) * 1984-07-19 1986-02-22 テキサコ・デベロツプメント・コーポレーシヨン Production of raw gas stream
JPS6319550U (en) * 1986-07-21 1988-02-09
JPS6369144U (en) * 1986-10-23 1988-05-10
JPS63135491A (en) * 1986-11-27 1988-06-07 Babcock Hitachi Kk Coal gasification and desulfurization method

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