JPS5974189A - Stabilization of coal - Google Patents
Stabilization of coalInfo
- Publication number
- JPS5974189A JPS5974189A JP18278982A JP18278982A JPS5974189A JP S5974189 A JPS5974189 A JP S5974189A JP 18278982 A JP18278982 A JP 18278982A JP 18278982 A JP18278982 A JP 18278982A JP S5974189 A JPS5974189 A JP S5974189A
- Authority
- JP
- Japan
- Prior art keywords
- coal
- oxidation treatment
- temperature
- water content
- low
- 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
Abstract
Description
【発明の詳細な説明】
本発明は石炭の安定化方法に関し、詳しくは泥炭、褐炭
、亜臨奔炭などの低品位炭の含水率を低減させると共に
活性を低下させて自然発火の防止を図る石炭の安定化方
法に関する。[Detailed Description of the Invention] The present invention relates to a method for stabilizing coal, and more specifically, to reduce the moisture content of low-grade coal such as peat, lignite, and subliminal coal, and to reduce its activity to prevent spontaneous combustion. Concerning methods for stabilizing coal.
褐炭などの低品位炭は含水率が高いため、その輸送が不
経済であるばかりでなく、活性が強いため輸送中や貯蔵
中などに自然発火を起こし易い等の理由で、その利用範
囲は山元近傍に限らｔｌている。Low-grade coal such as lignite has a high moisture content, which makes it uneconomical to transport.It is also highly active and tends to spontaneously ignite during transportation and storage. tl is limited to the vicinity.
このような事情に鑑み、これら低品位炭の脱水および自
然発火の防止に関する研究が行なわれ、種々の提案がな
されている。たとえば、謄本法としてけ■蒸発法、■機
械的脱水法などが知られており、また自然発火防止法と
してけ■空気遮断法（水中貯炭２石炭表面コーティング
、貯炭表面被覆、圧縮貯炭、不活性ガスシールなど）、
■冷却法、■微粉炭の除失、■ブリケット化などのＺ・
１策が行なわれている。In view of these circumstances, research has been conducted on dehydration of these low-rank coals and prevention of spontaneous combustion, and various proposals have been made. For example, as a certified copying method, ■evaporation method, ■mechanical dehydration method, etc. are known, and as a spontaneous combustion prevention method, ■air blocking method (underwater coal storage 2 coal surface coating, coal storage surface coating, compressed coal storage, inert coal storage, etc.) is known. gas seal, etc.),
■Cooling method, ■Removal of pulverized coal, ■Z-briquetting, etc.
One measure is being taken.
しかしながら、これらの方法は十分な効果が得られなか
ったり、操作が煩雑であったりして必ずしも満足すべき
方法ではなかった。However, these methods were not always satisfactory because sufficient effects were not obtained or the operations were complicated.
本発明の目的は、比較的簡便な操作によって低品位炭の
脱水と自然発火防止とを同時に行なう石炭の安定化方法
を提供することである。An object of the present invention is to provide a coal stabilization method that simultaneously dehydrates low-rank coal and prevents spontaneous combustion using relatively simple operations.
本発明に１石炭を実質的に含水率Ｇ％となるまで１００
〜５５０°Ｃの温度で７Ｊｌｌ熱処理し、次いで酸化処
理することを特徴とする石炭の安定化方法である。In the present invention, 1 coal is heated to 100% until the water content becomes substantially G%.
This is a method for stabilizing coal, which is characterized by heat treatment for 7 Jll at a temperature of ~550°C and then oxidation treatment.
石炭の中でに泥炭が最も自然発火しやすく、以下褐炭、
亜ＩｌｌだＷ炭、瀝青飲の順であることが知られている
。ま／ζ、泥炭、褐炭、亜瀝青炭１瀝青炭などの低品位
を匁は含水率が高いため、輸送効率が悪いものである。Among coals, peat is the most likely to spontaneously ignite;
It is known that the order is submersible, double charcoal, and bituminous. Low-grade coal such as ma/ζ, peat, lignite, and sub-bituminous coal has a high moisture content and has poor transportation efficiency.
したがって、本発明では主とじてこねら低品位炭を対象
としてその安定化を図るものである。Therefore, the present invention is intended primarily to stabilize kneaded low-rank coal.
本発明を実ＩＮするにあたり、予め石炭を天日乾燥ｔ［
どにより乾燥し２て含水率を１５〜２ｏ爪鼠％まで低減
さぜることか望ましい。In putting the present invention into practice, coal is dried in advance in the sun.
It is desirable to reduce the moisture content to 15-20% by drying.
石炭の加熱処β（１は１００〜３５０″Ｃの温度で行な
い、好ましくけＶ素ガスなどの不活性ガス中で行ない、
実質的に含水率が０％となる進行なう。処理時間−１石
炭の桶類、力１１熱温度などを考慮して決定するか、通
７；〈け１０分から５時間行なう。この加熱処理によっ
て水蒸気や可愉性ガスが除かれ原炭に比し耐自然発火性
が改善されるが、加熱処理の温度が５５０″Ｃを越える
と、炭酸ガス発生温度が低くなり、かつ酸素吸収量が増
大するようになり、十分な効果が得られない。Coal heating treatment β (1 is carried out at a temperature of 100 to 350"C, preferably in an inert gas such as V hydrogen gas,
This progresses until the moisture content becomes substantially 0%. Processing time: 1. Decide by taking into account the type of coal bucket, power 11, heat temperature, etc., or carry out the treatment for 10 minutes to 5 hours. This heat treatment removes water vapor and combustible gases, improving its spontaneous ignition resistance compared to raw coal. However, if the heat treatment temperature exceeds 550"C, the temperature at which carbon dioxide gas is generated becomes low, and the oxygen The amount of absorption increases, and sufficient effects cannot be obtained.
加熱処理後、所望により石炭の成形を行なう。After the heat treatment, the coal is shaped if desired.
成形は加熱処理した石炭を加熱、圧縮するだけでよく、
必要により湿潤タール、ピッチなどをバインダーとして
用いることができる。Forming can be done by simply heating and compressing the heat-treated coal.
If necessary, wet tar, pitch, etc. can be used as a binder.
次に行なう酸化処理は石炭の耐自然発火性を改善するこ
とを目的としており、通常は加熱下に行ない、特に１０
０〜２００°Ｃの温度で行なうとすぐれた効果が得られ
る。酸化処理Ｉ−Ｌ酸素濃度）容置％以上、通常１〜２
１容児％、好ましくは４〜１゜容置％でろＧ分〜５時間
、好ましくは２〜５時間行なう。酸化処理は空気を用い
て行なうことが出来るが、望ましくは酸素と窒素を所定
割合に混合した混合ガスを使用する。The next oxidation treatment is aimed at improving the spontaneous ignition resistance of the coal, and is usually carried out under heating, especially at 10%
Excellent effects are obtained when carried out at temperatures between 0 and 200°C. Oxidation treatment I-L oxygen concentration) Volume % or more, usually 1 to 2
It is carried out at 1% by volume, preferably 4 to 1% by volume, for 5 minutes to 5 hours, preferably 2 to 5 hours. The oxidation treatment can be carried out using air, but preferably a mixed gas containing oxygen and nitrogen in a predetermined ratio is used.
本発明の方法を適用した石炭は含水率が著減しており、
しかも原炭や豪州ブリケットと比較してすぐれた耐自然
発火性を有している。また、溶料として用いた場合、発
熱量が高く熔料用炭として好適な性状を有している。The moisture content of the coal to which the method of the present invention has been applied has been significantly reduced.
Furthermore, it has superior spontaneous ignition resistance compared to raw coal and Australian briquettes. In addition, when used as a solvent, it has a high calorific value and has properties suitable as charcoal for melting.
次に、本発明の実施例を示す。Next, examples of the present invention will be shown.
実施例１〜５
気乾したヤルーン褐炭（粒径５０以下に粉砕したもの）
２に９を充填塔に仕込み、予熱した窒素ガスを２ ｔ／
ｒｎｉｎ で充填塔に流通させて褐炭を乾燥し、引
き続き所定温度に到達後、３時間加熱処理した。その後
、室温まで降温させた褐炭を取り出し密閉容器に保存し
た。Examples 1 to 5 Air-dried Yarun lignite (pulverized to a particle size of 50 or less)
Charge 2 and 9 into a packed tower and add 2 t/h of preheated nitrogen gas.
The lignite was dried by flowing it through a packed tower at rnin, and after reaching a predetermined temperature, it was heat-treated for 3 hours. Thereafter, the brown coal was cooled to room temperature and was taken out and stored in an airtight container.
加熱処理した上記褐炭２００１を充填塔に仕込み、酸素
濃度を６容器％に調整した窒素と酸素との混合ガスを予
熱し、５００ ｍＡ’／ ｗｉｎ、で充填塔に流通させ
、所定温度に到達後、６時間酸化処理を行ｆＯｃつた。The heat-treated lignite 2001 was charged into a packed tower, and a mixed gas of nitrogen and oxygen with an oxygen concentration adjusted to 6 container % was preheated and passed through the packed tower at 500 mA'/win, after reaching a predetermined temperature. Then, oxidation treatment was performed for 6 hours.
その後、室温まで下げ褐炭を取９出して密閉容器に保存
した。Thereafter, the temperature was lowered to room temperature, and nine pieces of lignite were taken out and stored in a sealed container.
上記褐炭を粉砕２分級して粒径Ｏ１５〜０５陥の区分と
粒％７０．１５ｗｎ以下の区分に分け、前者についてＣ
Ｏ２ガス発生温度と酸素吸収量を測定して耐自然発火性
を評価した。また、後者について元素分析値、工業分析
値および発熱量を測定し／ζ。結果を第１表および第２
表に示す。The above lignite is crushed and classified into two categories: particle size O15-05 and particle % 70.15wn or less.
The spontaneous ignition resistance was evaluated by measuring the O2 gas generation temperature and the amount of oxygen absorbed. We also measured the elemental analysis value, industrial analysis value, and calorific value of the latter. The results are shown in Tables 1 and 2.
Shown in the table.
比較例１〜５
酸化処理を省いたこと以外は実施例１〜５と同様に行な
った。結果を第１表および第２表に示す。Comparative Examples 1 to 5 Comparative Examples 1 to 5 were carried out in the same manner as Examples 1 to 5 except that the oxidation treatment was omitted. The results are shown in Tables 1 and 2.
第１表
第 ２ 表
・１ 原炭を５０°Ｃで減圧乾燥したもの・２Ｊ工Ｓの
恒湿水分でなく到着炭の水分を基亭とした値実施例
この例では酸化処理時間の及ぼす影響について調べた。Table 1 Table 2 Table 1 Raw coal dried under reduced pressure at 50°C - Example of values based on the moisture content of the arriving coal rather than the constant humidity moisture of 2J Engineering S In this example, the effect of oxidation treatment time I looked into it.
すなわち加熱処理温度を２００°Ｃ１酸化処理温度を１
５０°ＣＳ 酸素濃度を６容量％とし、酸化処理時間を
変化させたこと以外は実施例１と同様に処理した。結果
を第３表に示す。In other words, the heat treatment temperature is 200°C, the oxidation treatment temperature is 1
50°C The treatment was carried out in the same manner as in Example 1 except that the oxygen concentration was 6% by volume and the oxidation treatment time was changed. The results are shown in Table 3.
第 ６ 表
実施例１１〜１５
この例では酸化処理を行なう際の酸素濃度の及ぼす影響
について調べるため、加熱処理温度を６００°Ｃ１酸化
処理温度を１５０°Ｃとし、酸素濃度を変化させたこと
以外は実施例１と同様に処理した。結果を第４表に示す
。Table 6 Examples 11 to 15 In this example, in order to examine the influence of oxygen concentration during oxidation treatment, the heat treatment temperature was 600°C, the oxidation treatment temperature was 150°C, and the oxygen concentration was varied. was treated in the same manner as in Example 1. The results are shown in Table 4.
第 ４ 表
実施例１６〜２０
この例では酸化処理温度の及ぼす影響についてＭｌ、ｌ
Δべた。すなわち加熱処理温度を５００°Ｃ１酸素濃度
を６容計％とじ、酸化処理温度を変化させたこと以夕（
は実施例１と同様に処理した。結果を第５表に示す。Table 4 Examples 16-20 In this example, regarding the influence of oxidation treatment temperature, Ml, l
Δ solid. That is, since the heat treatment temperature was set at 500°C, the oxygen concentration was kept at 6% by volume, and the oxidation treatment temperature was changed (
was treated in the same manner as in Example 1. The results are shown in Table 5.
第 ５ 表
比較例６，７
原炭（ヤルーン褐炭）を５０°Ｃにて力戊圧乾燥したも
の（比較例６）および象州ブ１〕ケ゛ン） （Ｊｔ ４
９例７）であって粒径０． ＋ ５〜［１５Ｍの区分に
ついてＣＯ２ガス発生温度と酸素吸収量を測定した。糸
ｊｉ果を第６表に示す。Table 5 Comparative Examples 6 and 7 Raw coal (Yalun lignite) dried under pressure at 50°C (Comparative Example 6) and Xiangzhou Bu 1 Can) (Jt 4)
9 cases 7) and the particle size is 0. The CO2 gas generation temperature and oxygen absorption amount were measured for the +5 to [15M categories. The thread fruit is shown in Table 6.
比較例８，９
加熱処理温度を４００°Ｃとし、酸化処ｊ１１（をイｔ
なわなかったこと以外は実施例１と１ｉ−ｉＪ様に処理
１したもの（比較例日）訃よび加熱処理温度を４００°
Ｃ１酸化処理温度を１５０°Ｃとしたこと以外は実施例
１と同様に処理したもの（比較例９）についてＣＱ２ガ
ス発生温度と酸素吸収液を測定した。結果を第６表に示
す。Comparative Examples 8 and 9 The heat treatment temperature was 400°C, and the oxidation treatment j11 (
Example 1 and 1i-iJ were treated in the same manner as Example 1 (comparative example day), except that the heat treatment temperature was 400°.
The CQ2 gas generation temperature and the oxygen absorbing liquid were measured for a sample treated in the same manner as in Example 1 (Comparative Example 9) except that the C1 oxidation treatment temperature was 150°C. The results are shown in Table 6.
特許出願人 出光興産株式会社 （、Ａ９−Patent applicant: Idemitsu Kosan Co., Ltd. (,A9-
Claims (4)
ことを特徴とする石炭の安定化方法。(1) Boil the coal until the moisture content becomes substantially 0%. A method for stabilizing coal, characterized by heat treatment at a temperature of ~550°C and then oxidation treatment.
記載の方法。(2) The method according to claim 1, wherein the coal is low-rank coal.
の方法。(3) The method according to claim 1, wherein the coal is lignite.
酸素濃度１〜２１谷量％の条件下で行なう特許請求の範
囲第１項記載の方法。(4) The method according to claim 1, wherein the oxidation treatment is performed at a temperature of +on to 200°C and an oxygen concentration of 1 to 21%.
Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18278982A JPS5974189A (en) | 1982-10-20 | 1982-10-20 | Stabilization of coal |
| AU19907/83A AU552638B2 (en) | 1982-10-20 | 1983-10-05 | Process for modification of coal |
| CA000438554A CA1227639A (en) | 1982-10-20 | 1983-10-06 | Process for modification of coal |
| US06/747,652 US4645513A (en) | 1982-10-20 | 1985-06-21 | Process for modification of coal |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP18278982A JPS5974189A (en) | 1982-10-20 | 1982-10-20 | Stabilization of coal |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| JPS5974189A true JPS5974189A (en) | 1984-04-26 |
| JPS6367518B2 JPS6367518B2 (en) | 1988-12-26 |
Family
ID=16124443
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP18278982A Granted JPS5974189A (en) | 1982-10-20 | 1982-10-20 | Stabilization of coal |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPS5974189A (en) |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS6250393A (en) * | 1985-08-28 | 1987-03-05 | Mitsubishi Heavy Ind Ltd | Heat treatment of coal |
| JP2007246245A (en) * | 2006-03-17 | 2007-09-27 | Ngk Insulators Ltd | Method and device for storing powder and granular material |
| JP2007245040A (en) * | 2006-03-17 | 2007-09-27 | Ngk Insulators Ltd | Granular material storing method and granular material storing device |
| WO2012081371A1 (en) * | 2010-12-17 | 2012-06-21 | 三菱重工業株式会社 | Coal deactivation apparatus |
| JP2013139537A (en) * | 2012-01-06 | 2013-07-18 | Mitsubishi Heavy Ind Ltd | Method for deactivating coal |
| WO2014091827A1 (en) * | 2012-12-14 | 2014-06-19 | 三菱重工業株式会社 | Coal deactivation processing device and equipment for producing modified coal using same |
| JP2014126541A (en) * | 2012-12-27 | 2014-07-07 | Nippon Steel & Sumitomo Metal | Evaluation method and evaluation device for spontaneous ignition property of low-quality coal |
| JP2014152229A (en) * | 2013-02-07 | 2014-08-25 | Kobe Steel Ltd | Aging device for reducing natural heat generating property of upgraded low rank coal, and operating method of the same |
| US9617491B2 (en) | 2012-01-06 | 2017-04-11 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation treatment device |
| US9701919B2 (en) | 2013-03-04 | 2017-07-11 | Mitsubishi Heavy Industries, Ltd. | Coal inactivation processing apparatus |
| US9758741B2 (en) | 2012-10-09 | 2017-09-12 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation processing device |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011111529A (en) * | 2009-11-26 | 2011-06-09 | Kobe Steel Ltd | Ignition-resistant coal and method for producing the same |
| JP2011127010A (en) * | 2009-12-18 | 2011-06-30 | Mitsubishi Heavy Ind Ltd | Coal reforming equipment |
| JP4719298B1 (en) * | 2010-03-24 | 2011-07-06 | 三菱重工業株式会社 | Modified coal production equipment |
| JP2013173832A (en) * | 2012-02-24 | 2013-09-05 | Mitsubishi Heavy Ind Ltd | Modified coal production equipment |
Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5670094A (en) * | 1979-11-09 | 1981-06-11 | Mitsubishi Heavy Ind Ltd | Heat-treating method of coal |
-
1982
- 1982-10-20 JP JP18278982A patent/JPS5974189A/en active Granted
Patent Citations (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS5670094A (en) * | 1979-11-09 | 1981-06-11 | Mitsubishi Heavy Ind Ltd | Heat-treating method of coal |
Cited By (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH0513198B2 (en) * | 1985-08-28 | 1993-02-19 | Mitsubishi Heavy Ind Ltd | |
| JPS6250393A (en) * | 1985-08-28 | 1987-03-05 | Mitsubishi Heavy Ind Ltd | Heat treatment of coal |
| JP2007246245A (en) * | 2006-03-17 | 2007-09-27 | Ngk Insulators Ltd | Method and device for storing powder and granular material |
| JP2007245040A (en) * | 2006-03-17 | 2007-09-27 | Ngk Insulators Ltd | Granular material storing method and granular material storing device |
| US9290711B2 (en) | 2010-12-17 | 2016-03-22 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation apparatus |
| WO2012081371A1 (en) * | 2010-12-17 | 2012-06-21 | 三菱重工業株式会社 | Coal deactivation apparatus |
| JP2012126856A (en) * | 2010-12-17 | 2012-07-05 | Mitsubishi Heavy Ind Ltd | Coal deactivation apparatus |
| CN103180418A (en) * | 2010-12-17 | 2013-06-26 | 三菱重工业株式会社 | Coal deactivation apparatus |
| US9359569B2 (en) | 2012-01-06 | 2016-06-07 | Mitsubishi Heavy Industries, Ltd. | Method for deactivating coal |
| JP2013139537A (en) * | 2012-01-06 | 2013-07-18 | Mitsubishi Heavy Ind Ltd | Method for deactivating coal |
| US9617491B2 (en) | 2012-01-06 | 2017-04-11 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation treatment device |
| US9758741B2 (en) | 2012-10-09 | 2017-09-12 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation processing device |
| WO2014091827A1 (en) * | 2012-12-14 | 2014-06-19 | 三菱重工業株式会社 | Coal deactivation processing device and equipment for producing modified coal using same |
| US9528065B2 (en) | 2012-12-14 | 2016-12-27 | Mitsubishi Heavy Industries, Ltd. | Coal deactivation processing device and equipment for producing modified coal using same |
| JP2014126541A (en) * | 2012-12-27 | 2014-07-07 | Nippon Steel & Sumitomo Metal | Evaluation method and evaluation device for spontaneous ignition property of low-quality coal |
| JP2014152229A (en) * | 2013-02-07 | 2014-08-25 | Kobe Steel Ltd | Aging device for reducing natural heat generating property of upgraded low rank coal, and operating method of the same |
| US9701919B2 (en) | 2013-03-04 | 2017-07-11 | Mitsubishi Heavy Industries, Ltd. | Coal inactivation processing apparatus |
Also Published As
| Publication number | Publication date |
|---|---|
| JPS6367518B2 (en) | 1988-12-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5974189A (en) | Stabilization of coal | |
| US4052168A (en) | Process for upgrading lignitic-type coal as a fuel | |
| US4645513A (en) | Process for modification of coal | |
| Clemens et al. | The role of moisture in the self-heating of low-rank coals | |
| Kumar et al. | Influence of carbonization conditions on the gasification of acacia and eucalyptus wood chars by carbon dioxide | |
| US6068671A (en) | Coal drying method and equipment, method for aging reformed coal and aged reformed coal, and process and system for producing reformed coal | |
| JP6402235B1 (en) | Method for producing modified coal | |
| JPS6065097A (en) | Improvement of coal | |
| JP3935553B2 (en) | Aging method of reformed coal and aged reformed coal | |
| US4761162A (en) | Upgrading and storage of solid carbonaceous fuel | |
| AU2013297837B2 (en) | Blast-furnace-blow-in charcoal and method for producing same | |
| JPS59161491A (en) | Modification of coal | |
| KR860002068B1 (en) | Process for modification of coal | |
| CN112705163A (en) | Multi-metal in-situ doped desulfurizer based on low-coalification-degree inferior coal and preparation method thereof | |
| KR101269391B1 (en) | Pulverized fuel and method for production of the same | |
| GB946358A (en) | Barbecue briquettes and method of making the same | |
| Guan et al. | Lignite thermal upgrading and its effect on surface properties | |
| JPH07166180A (en) | Reforming process of low quality coal | |
| JP2011111529A (en) | Ignition-resistant coal and method for producing the same | |
| US4308668A (en) | Process for heat treatment of coal | |
| WO2023012773A1 (en) | Carbon material and production method therefor | |
| JPS6250393A (en) | Heat treatment of coal | |
| WO2015049961A1 (en) | Method for producing modified coal, and modified coal | |
| JPS6034494B2 (en) | Method for producing porous activated coke | |
| SU1765169A1 (en) | Method of producing brown coal briquettes |