TW491888B - Method and apparatus for drying coal - Google Patents
Method and apparatus for drying coal Download PDFInfo
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- TW491888B TW491888B TW089116655A TW89116655A TW491888B TW 491888 B TW491888 B TW 491888B TW 089116655 A TW089116655 A TW 089116655A TW 89116655 A TW89116655 A TW 89116655A TW 491888 B TW491888 B TW 491888B
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- gas
- fluidized bed
- coal
- bed dryer
- dryer
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Classifications
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B57/00—Other carbonising or coking processes; Features of destructive distillation processes in general
- C10B57/08—Non-mechanical pretreatment of the charge, e.g. desulfurization
- C10B57/10—Drying
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B45/00—Other details
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B3/00—Drying solid materials or objects by processes involving the application of heat
- F26B3/02—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air
- F26B3/06—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried
- F26B3/08—Drying solid materials or objects by processes involving the application of heat by convection, i.e. heat being conveyed from a heat source to the materials or objects to be dried by a gas or vapour, e.g. air the gas or vapour flowing through the materials or objects to be dried so as to loosen them, e.g. to form a fluidised bed
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Life Sciences & Earth Sciences (AREA)
- Microbiology (AREA)
- Drying Of Solid Materials (AREA)
- Coke Industry (AREA)
- Solid Fuels And Fuel-Associated Substances (AREA)
Abstract
Description
491888491888
經濟部智慧財產局員工消費合作社印製 491888 A7 _______________B7_________— — 五、發明說明(2) 個乾燥系統,其中被煉焦爐的回收顯熱(sensible ^叫所加 熱的一個有機加熱媒介,被循環於熱傳導管路中,該管路 被架設於流化床乾燥機中,在此同時,來自煉焦爐的燃燒 廢氣被注入流化床乾燥機中作為熱氣。 在腔室型煉焦爐中,煉焦室和燃燒室被交錯地排列成 一條線,被約l〇〇mm厚的磚塊壁分隔。在燃燒室中產生的 熱氣經過磚塊壁被傳送到煉焦爐中的煤炭。燃燒室陣列通 常被分隔成26至34個小室,一再生器被排列在每個燃燒室 下方。包括有再生器的小室被分成兩組。第一組再生器在 完成熱儲存後係在高溫下,燃料氣體和空氣在再生器中被 預熱,然後被互相混合,並在上腔室(向上流動)中燒掉。然 後,在燃燒後,廢氣被向下進送到第二組腔室(向下流)中, S熱夏於腔室下方的再生器中取出後,透過煙道排出。 第一組再生器溫度因使氣體預熱而下降,而第二組再 生器溫度因熱儲存而上升。在預定時間經過後,第一組的 功能被切換到熱儲存側,第二組被切換到燃燒側。藉由在 預定時間間隔反覆切換,則預熱操作和熱儲存操作被交錯 地進行,以便提高再生效率。交錯地改變燃燒室的狀態, 從燃燒側到下流側或相反的操作,如上所述稱為燃燒變換。 在燃燒變換勤間空氣和氣體的供應和停止的操作,根 據第4圖解釋於下。 首先,被供應到已是燃燒側(暫時地稱為” A側”)的燃燒 室的氣體在規定時間内降到零。然後,用於燃燒的空氣量 在規定時間内減少到零。此時,從燃燒室和了流側(暫時地 本紐尺度適用中國國家標準(CNS)A4規格(210 X 297公楚)--'~~5~:-- — — — — — — — — — — IAW - ull· — — — ^-11111111 I (請先閱讀背面之注意事項再填寫本頁) 491888 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明(3) —~ - 稱為B側)的再生器到煙道的 搜迢的排軋糸統,從打開切換到關 閉。之後’《燒室和”_”的再生器(到那時為止仍為辦 燒側)’從關閉切換到打開’以便能夠排放到煙道。缺後, 空氣逐漸引入到B側(其到那時為止仍為下流侧)的燃燒室, 最後,開始燃料氣體的引入。 在腔室型煉焦爐中,燃燒氣體的變換如上所述在固定 的期間完成。在變換期間’如第4圖最下行所示,來自練隹 爐的燃燒廢氣流動被中斷,雖然只有很短的時間。在練焦| 爐送來的煙道廢氣被使用作為流化床乾燥機的進送氣體的、 傳統方法中’沒有給予任何防範措施來克服上述燃燒變換 期間燃燒廢氣的中斷,無法確保乾燥煤炭的穩定操作。 此外,因A流化床乾燥機送出的廢氣含有在高溫下完 全或幾乎飽和的蒸汽,存在一個問題在於蒸汽的冷凝由於 廢氣在廢氣管路中冷卻而發生,然後發生位於管路下游側 的灰塵捕集器的過濾布的堵塞。 而且,充份體積的氣體必須被供應到流化床乾燥機, 俾使煤炭流體化,不管煤炭的進送率為何。雖然,煉焦爐 达來的廢氣,被使用作為較乾的進送氣體,有高於一特定 程度的溫度來乾燥煤炭。當流化床乾燥開始,煤炭進送逐 漸增加。然而,因為進送氣體量維持在上述的一特定程度 以上,所以存在著當煤炭進送率低時煤炭被過度乾燥的問 題。 本發明之概要說明 本發明之目的在於解決上述問題,以及在藉流化床乾 «^---------tr---- (請先閱讀背面之注意事項再填寫本頁)Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 491888 A7 _______________B7_________ — V. Description of the invention (2) Drying system, in which the sensible heat recovered by the coke oven (sensible ^ is called an organic heating medium that is heated and is circulated in heat conduction) In the pipeline, the pipeline is set up in a fluidized bed dryer, and at the same time, the combustion exhaust gas from the coke oven is injected into the fluidized bed dryer as hot gas. In a chamber-type coke oven, the coking chamber and combustion The chambers are staggered into a line, separated by a brick wall of about 100 mm thickness. The hot gas generated in the combustion chamber is transmitted through the brick wall to the coal in the coke oven. The array of combustion chambers is usually divided into 26 Up to 34 small chambers, one regenerator is arranged under each combustion chamber. The small chambers including the regenerators are divided into two groups. The first group of regenerators is heated at high temperature after the heat storage is completed, and the fuel gas and air are in the regenerators. The medium is preheated and then mixed with each other and burned in the upper chamber (upflow). Then, after combustion, the exhaust gas is sent down to the second group of chambers (downflow) ), S hot summer is taken out of the regenerator below the chamber and discharged through the flue. The temperature of the first group of regenerators is lowered by preheating the gas, and the temperature of the second group of regenerators is increased by thermal storage. After the predetermined time has elapsed, the functions of the first group are switched to the thermal storage side and the second group is switched to the combustion side. By repeatedly switching at predetermined time intervals, the preheating operation and the thermal storage operation are staggered to improve Regeneration efficiency. The state of the combustion chamber is staggered, and the operation from the combustion side to the downstream side or the opposite is referred to as the combustion shift as described above. The operation of supplying and stopping air and gas in the combustion shift room is explained according to FIG. 4 First, the gas supplied to the combustion chamber that is already on the combustion side (temporarily referred to as "A side") drops to zero within a specified time. Then, the amount of air used for combustion is reduced to zero within a specified time. .At this time, from the combustion chamber and the flow side (temporarily this standard applies the Chinese National Standard (CNS) A4 specification (210 X 297))-'~~ 5 ~:-— — — — — — — — — — IAW-ull · — — ^ -11111111 I (Please read the precautions on the back before filling out this page) 491888 491888 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Description of Invention (3) — ~-Called B side) Regenerator Go to the flue search system, switch from open to closed. After that, the regenerator of "《burning chamber and" _ "(as of that time, it is still the burning side)," switch from closed to open "so that It is discharged into the flue. After the shortage, air is gradually introduced into the combustion chamber on the B side (which is still the downstream side by then), and finally, the introduction of the fuel gas is started. In the chamber-type coke oven, the combustion gas is changed as above This is done in a fixed period. During the transition period, 'as shown at the bottom of Figure 4, the flow of combustion exhaust gas from the kiln is interrupted, although only for a short time. In the coke-making | furnace, the flue gas is used as the feed gas of the fluidized bed dryer. In the traditional method, 'no precautions are given to overcome the interruption of the combustion gas during the above-mentioned combustion shift, and it is impossible to ensure the drying of coal. Stable operation. In addition, because the exhaust gas sent from the A fluidized bed dryer contains steam that is completely or almost saturated at high temperatures, there is a problem in that the condensation of the steam occurs due to the exhaust gas cooling in the exhaust pipe, and then dust on the downstream side of the pipe occurs. The filter cloth of the trap is clogged. Moreover, a sufficient volume of gas must be supplied to the fluidized bed dryer to fluidize the coal, regardless of the feed rate of the coal. Although, the exhaust gas from the coke oven is used as a relatively dry feed gas, it has a temperature above a certain degree to dry coal. As fluidized bed drying begins, coal feeds gradually increase. However, because the amount of feed gas is maintained above a certain level as described above, there is a problem that the coal is excessively dried when the coal feed rate is low. Brief description of the present invention The purpose of the present invention is to solve the above problems and dry the fluidized bed «^ --------- tr ---- (Please read the precautions on the back before filling this page)
ϋ ·ϋ n n I 秦ϋ · ϋ n n I Qin
本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 491888 A7 經濟部智慧財產局員工消費合作社印製 五、發明說明() 燥機使用來自煉焦爐之煙道廢氣來乾燥煤炭中,提供用於 乾燥煤炭之方法與裝置,能夠穩定地乾燥煤炭,即使是在 煉焦爐的燃燒變換期間。 & 本發明之另一目的在於防止在流化床乾燥機排出的廢 氣發生澄度冷凝。本發明的另一目的在於防止流化床乾燥 機的操作初期發生煤炭的過度乾燥。本發明之另一目的在 於壓制從流化床乾燥機的微細煤炭的發散,並改善焦炭品 質。 …Ίπ 本發明被想得到來解決上述問題,本發明之要點如下: ⑴用於乾燥煤炭之方法,藉流化床乾燥機,利用煉焦 爐送出的煙道廢氣作為往該流化床乾燥機的進送氣體的一 部份或全部,其特徵在於:當來自煉焦爐煙道廢氣的供應 被中斷或減少時,來自該流化床乾燥機的廢氣被循環和再 使用作為往該流化床乾燥機的進送氣體。 (2) 用於乾燥煤炭之方法,藉流化床乾燥機,利用練焦 爐送出的煙道廢氣作為往該流化床乾燥機的的二 部份或全部,其特徵在於:當來自煉焦爐煙道廢=應 被中斷或減少時,送往該流化床的煤炭量減少,以及該流 化床乾燥機送出的該廢氣被循環和再使用作為往該流化床 乾燥機的進送氣體。 (3) 用於乾燥煤炭之方法,藉流化床乾燥機,利用煉焦 爐送出的煙道廢氣作為往該流化床乾燥機的進送氣體的一 部份或全部,其特徵在於··當來自煉焦爐煙道廢氣的供應 被中斷或減少時,從流化床排出煤炭量和送入流化床的煤 Μ氏張尺度適β國國冢標準(CNS)A4規格⑽χ297公髮 c請先閱讀背面之注音?事項再填寫本頁) 裝-----r---訂----This paper size applies to Chinese National Standard (CNS) A4 (210 X 297 mm) 491888 A7 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the invention () The dryer uses the flue gas from the coke oven to dry coal In the present invention, a method and an apparatus for drying coal are provided, which can stably dry the coal, even during a combustion shift of a coke oven. & Another object of the present invention is to prevent smooth condensation of the exhaust gas discharged from the fluidized bed dryer. Another object of the present invention is to prevent excessive drying of coal at the initial stage of operation of the fluidized bed dryer. Another object of the present invention is to suppress the emission of fine coal from a fluidized bed dryer and improve coke quality. ... Ίπ The present invention is conceived to solve the above problems. The main points of the present invention are as follows: ⑴The method for drying coal uses a fluidized bed dryer to use the flue gas from the coke oven as the feed to the fluidized bed dryer. Part or all of the gas delivery is characterized in that when the supply of exhaust gas from the coke oven flue is interrupted or reduced, the exhaust gas from the fluidized bed dryer is recycled and reused as the fluidized bed dryer Feed gas. (2) The method for drying coal uses a fluidized bed dryer to use the flue gas from the coke oven as two or all of the fluidized bed dryers. It is characterized in that when it comes from a coke oven Flue waste = when the amount of coal sent to the fluidized bed should be interrupted or reduced, and the exhaust gas sent from the fluidized bed dryer is recycled and reused as the feed gas to the fluidized bed dryer . (3) The method for drying coal uses a fluidized bed dryer to use the flue gas from a coke oven as part or all of the feed gas to the fluidized bed dryer, which is characterized by ... When the supply of flue gas from the coke oven is interrupted or reduced, the amount of coal discharged from the fluidized bed and the size of the coal sent to the fluidized bed are suitable for the β-country standard (CNS) A4 standard ⑽χ297. Read the phonetic on the back? (Please fill in this page for matters) Install ----- r --- Order ----
ϋ ϋ ϋ I φ 491888 經濟部智慧財產局員工消費合作社印製 A7 B7 五、發明說明(5) - 炭,兩者均被減少,以及從該流化床乾燥機排出的廢氣被 循環和再使用作為往該流化床乾燥機的進送氣體,以便在 該流化床中維持煤炭層的厚度在一預定厚度内。 (4) 根據要點(2)或(3)之用於乾燥煤炭之方法,其特徵 在於:送入該流化床的煤炭量被控制,使得當來自煉焦爐 煙道廢氣的供應中斷或減少時,在該乾燥機出口的煤炭溫 度被保持幾乎一定。 1 (5) 根據要點(2)或(3)之用於乾燥煤炭之方法,其特徵在 於·送入該流化床的煤炭量被控制,使得送到該流化床的 進送氣體溫度和該流化床乾燥機出口的氣體溫度之間的差 異,落在一預定範圍内。 (6) 根據要點(2)或(3)之用於乾燥煤炭之方法,其特徵在 於:當來自煉焦爐的煙道廢氣的供應繼續時,煉焦爐的煙 道廢氣被用作為往該流化床乾燥機的進送氣體,且送到該 流化床的煤炭量被增加,以致於在該乾燥機出口的煤炭溫 度被保持在預定目標範圍内。 (7) 根據要點(6)之用於乾燥煤炭之方法,其特徵在於: 送到遠流化床的煤炭量被增加,以致於送到該流化床的進 送氣體溫度和該流化床乾燥機出口的溫度之間的差異落在 預定範圍内。 (8) 根據要點(1)、(2)或(3)之用於乾燥煤炭之方法,其特 徵在於:從該流化床乾燥機排出的氣體和被循環以進送到 該流化床乾燥機的氣體的一部份或全部通路被熱絕緣,及 一部份氣體被加熱。 ^-----r I--tT---------1 (請先閱讀背面之注意事項再填寫本頁)ϋ ϋ ϋ I φ 491888 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 B7 V. Invention Description (5)-Carbon, both of which are reduced, and the exhaust gas discharged from the fluidized bed dryer is recycled and reused As a feed gas to the fluidized bed dryer, the thickness of the coal layer is maintained within a predetermined thickness in the fluidized bed. (4) The method for drying coal according to point (2) or (3), characterized in that the amount of coal fed into the fluidized bed is controlled so that when the supply of exhaust gas from the coke oven flue is interrupted or reduced The coal temperature at the outlet of the dryer is kept almost constant. 1 (5) The method for drying coal according to point (2) or (3), characterized in that the amount of coal fed into the fluidized bed is controlled such that the temperature of the feed gas sent to the fluidized bed and The difference between the gas temperatures at the outlet of the fluidized bed dryer falls within a predetermined range. (6) The method for drying coal according to the point (2) or (3), characterized in that when the supply of flue gas from the coke oven is continued, the flue gas of the coke oven is used as the fluidization The bed dryer is fed with gas, and the amount of coal sent to the fluidized bed is increased so that the temperature of the coal at the outlet of the dryer is maintained within a predetermined target range. (7) The method for drying coal according to point (6), characterized in that the amount of coal sent to the remote fluidized bed is increased so that the temperature of the feed gas sent to the fluidized bed and the fluidized bed The difference between the temperatures at the outlet of the dryer falls within a predetermined range. (8) The method for drying coal according to the point (1), (2) or (3), characterized in that the gas discharged from the fluidized bed dryer is circulated to be fed into the fluidized bed to dry Part or all of the gas path of the machine is thermally insulated, and part of the gas is heated. ^ ----- r I--tT --------- 1 (Please read the notes on the back before filling this page)
本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明( (9) 根據要點(1)、⑵或⑶之用於乾燥煤炭之方法,其 特徵在m流化床乾燥機排出的氣體被循環且再使用 作為往該流化床乾燥機的進送氣體時,為了清潔組設於該 循環氣體通路的灰塵捕集器的目的,氣體被吹入:且: 吹入氣體所增加之氣體量對應的氣體量被添加到排出外面 的氣體量。 (10) 根據要點(1)、⑵或⑶之用於乾燥煤炭之方法,其 特徵在於:在煉焦爐送出的煙道廢氣供應中斷或減少之前,' 一警告信號發出,在根據該信號的順序之後,採取下述一 或多個動作: 改變被循環和再使用作為往該流化床乾燥機的進送氣 體的廢氣量, ' 改變送至該流化床的煤炭量, 改變從該流化床釋出的煤炭量, 加熱循環氣體,及 吹入氣體作為清潔該灰塵捕集器。 (11) 根據要點(1)、⑵或⑶之用於乾燥煤炭之方法,其 特徵在於:當來自煉焦爐的煙道廢氣的供應中斷或減少時, 由熱氣產生器供應的熱氣被使用作為往該流化床乾燥機的 進送氣體的一部份。 (12) 用於乾燥煤炭之方法,藉流化床乾燥機,使用由熱 氣產生器供應的熱氣,連同來自煉焦爐的煙道廢氣,一起 作為往該流化床乾燥機的進送氣體,其特徵在於:藉由根 據來自煉焦爐之煙道廢氣的供應體積的變化來控制熱氣的 ‘紙張尺度適用+國國家標準(CNS)A4規格(2_1G χ 297公髮)This paper size applies to China National Standard (CNS) A4 specifications (210 X 297 mm 491888) Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 V. Description of the invention ((9) Use according to the point (1), ⑵ or ⑶ The method for drying coal is characterized in that when the gas discharged from the fluidized bed dryer is circulated and reused as the feed gas to the fluidized bed dryer, a dust trap installed in the circulating gas passage is cleaned. For the purpose, the gas is blown in: and: The amount of gas corresponding to the increase in the amount of gas blown in is added to the amount of gas discharged outside. (10) Method for drying coal according to point (1), ⑵ or ⑶ , Characterized in that: before the supply of flue gas from the coke oven is interrupted or reduced, a warning signal is issued, and after the sequence of the signal, one or more of the following actions are taken: change to be recycled and reused as The exhaust gas amount of the feed gas of the fluidized bed dryer, 'changes the amount of coal sent to the fluidized bed, changes the amount of coal released from the fluidized bed, heats the circulating gas, and blows in the gas for cleaning Dust trap (11) The method for drying coal according to point (1), ⑵ or ⑶, characterized in that when the supply of flue gas from the coke oven is interrupted or reduced, the Hot gas is used as part of the feed gas to the fluidized bed dryer. (12) The method for drying coal uses a fluidized bed dryer to use the hot gas supplied by the hot gas generator, together with the gas from the coke oven. The flue gas exhaust gas, as the feed gas to the fluidized bed dryer, is characterized in that the paper size is controlled by the change of the supply volume of flue gas exhaust gas from the coke oven. (CNS) A4 specifications (2_1G x 297)
Aw Μ-----r---^---------Aw 1 (請先閱讀背面之注意事項再填寫本頁} 經濟部智慧財產局員工消費合作社印製 A7 -------BL_____ 五、發明說明(^ 體積及/或溫度,往該流化床乾燥機的進送氣體的供應體積 和溫度,被維持在分別的預定目標值。 (13) 根據要點(1)、(2)、(3)或(12)之用於乾燥煤炭之方法, 其特徵在於:送入該流化床乾燥機的循環氣體和煉焦爐送 出之煙道廢氣的其中一者或兩者被加熱。 (14) 根據要點(ι)、(2)、(3)或(12)之用於乾燥煤炭之方法, 其特徵在於:一部份的進送氣體被供應到該流化床之一充 氣室,同時,其餘的進送氣體,在乾燥機的乾舷高度(freeb〇ard) 部段和該灰塵捕集器之間的一點,被供應到該乾燥機送出 的廢氣中。 (15) 用於乾燥煤炭之方法,藉一流化床乾燥機,使用煉 焦爐送出的煙道廢氣作為往該流化床乾燥機的進送氣體的 邛伤或全部,其特徵在於r來自兩個有不同燃燒變換定 時的煉焦爐的煙道廢氣被混合並使用作為往該流化床乾燥 機之進送氣體。 ⑽根據要點⑴、⑵、⑶、⑽或(15)之用於乾燥煤炭 之方法,其特徵在於:當在該流化床乾燥機的操作初期, 往該乾燥機的煤炭進送率被逐漸增加,而同時使進送氣體 送到該乾燥機並加水到該流化床。 _ (Π)根據要點⑴、⑵、⑶、⑽或(15)之用於乾燥煤炭 之了法,其特徵在於:來自煉焦爐的煙道廢氣和由流化床 乾燥機排出的循環氣體兩者被用作為往流化床乾燥機的進 錢體,循環氣體消耗量根據流化床乾燥機出口測得的煤 炭溫度而控制,由煉焦爐煙道取出的氣體體積亦在相同時 本紐尺度適ffl中國國家標準(CNS)A4規格(210 x 297公楚) ^ ^---------^---------^ (請先閱讀背面之注意事項再填寫本頁) A7 -------- B7____ 五、發明說明(8) "—'— 間被控制,且流化床乾燥機出口的煤炭溫度由上述三個措 施而穩定。 (18) 根據要點⑴、⑵、⑶、(12)或(15)之用於乾燥煤炭 之方法,其特徵在於:來自煉焦爐的煙道廢氣和由流化床 乾燥機排出的循環氣體兩者,被使用作為往流化床乾燥機 檐裒氣體彳盾環氣體消耗量根據往流化床的進送氣體溫度 和在流化床乾燥機出口的氣體溫度之間的差異而控制,由 煉焦爐煙道取出的氣體體積亦在相同時間被控制,且流化 床乾燥機出口的煤炭溫度由上述三個措施而穩定。 (19) 根據要點⑴、⑵、(3)、(12)或(15)之用於乾燥煤炭 之方法其特徵在於·含在由流化床排出的氣體中的微細 煤炭’被固氣分離法分離,該已分離的微細煤炭被一由液 體構成的添加物混合和攪拌,該添加物含有由煤炭或汽油 得到的重碳氫化合物,該已混合和揮拌的微細煤炭,連同 被流化床乾燥機乾燥的煤炭,被使用作為送往煉焦爐的原 料。 (20) 根據要點(1)、⑵、(3)、(12)或(15)之用於乾燥煤炭 之方法’其特徵在於:含在由流化床排出的氣體中的微細 煤炭’被固氣分離法分離,該已分離的微绅煤炭被一由液 體構成的添加物混合和攪拌,該添加物含有由煤炭或汽油 得到的重碳氫化合物,該已混合和擾拌的微細煤炭藉壓力 成形法成而形成,該成形的微細煤炭,連同被流化床乾燥 機乾燥的煤炭,被使用作為送往煉焦爐的原料。 (21) 用於乾燥煤炭之裝置,具有用於乾燥煤炭的流化床 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閱讀背面之注意事項再填寫本頁) 裝----------訂----- 鑣 經濟部智慧財產局員工消費合作社印製 9Aw Μ ----- r --- ^ --------- Aw 1 (Please read the notes on the back before filling out this page} Printed by A7, Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs --- ---- BL_____ 5. Description of the invention (^ Volume and / or temperature, the supply volume and temperature of the feed gas to the fluidized bed dryer are maintained at their respective predetermined target values. (13) According to the main point (1 ), (2), (3) or (12) method for drying coal, characterized in that one or both of the circulating gas sent to the fluidized bed dryer and the flue gas from the coke oven (14) The method for drying coal according to the points (ι), (2), (3) or (12), characterized in that a part of the feed gas is supplied to the fluidized bed One of the plenums, and at the same time, the remaining feed gas, at a point between the freeboard section of the dryer and the dust trap, is supplied to the exhaust gas sent by the dryer. 15) The method for drying coal uses a first-grade chemical bed dryer to use the flue gas from the coke oven as the purge gas for the fluidized bed dryer. It is characterized by the fact that the flue gas from two coke ovens with different combustion conversion timings is mixed and used as the feed gas to the fluidized bed dryer. ⑽ According to the points 要, ⑵, ⑶, ⑽ (15) The method for drying coal, characterized in that: at the initial stage of the operation of the fluidized bed dryer, the coal feed rate to the dryer is gradually increased, and at the same time, the feed gas is sent to the Dryer and add water to the fluidized bed. _ (Π) The method for drying coal according to the points ⑴, ⑵, ⑶, ⑽ or (15), characterized in that the flue gas from the coke oven and the free flow Both the circulating gas discharged from the fluidized bed dryer are used as the input body to the fluidized bed dryer. The consumption of the circulating gas is controlled according to the coal temperature measured at the outlet of the fluidized bed dryer. The gas volume is also at the same time. This standard is suitable for the Chinese National Standard (CNS) A4 specification (210 x 297 cm). ^ ^ --------- ^ --------- ^ (Please Read the notes on the back before filling this page) A7 -------- B7____ V. Description of Invention (8) " The coal temperature at the outlet of the fluidized bed dryer is controlled by the above three measures. (18) The method for drying coal according to points ⑴, ⑵, ⑶, (12) or (15), It is characterized in that both the flue gas from the coke oven and the circulating gas discharged from the fluidized bed dryer are used as the eaves gas to the fluidized bed dryer and the shield ring gas consumption according to the feed to the fluidized bed. The difference between the gas sending temperature and the gas temperature at the fluidized bed dryer outlet is controlled. The volume of gas taken out from the coke oven flue is also controlled at the same time, and the coal temperature at the fluidized bed dryer outlet is controlled by the above three Measures and stability. (19) The method for drying coal according to the points ⑴, ⑵, (3), (12), or (15) is characterized in that the fine coal contained in the gas discharged from the fluidized bed is separated by a solid-gas method Separated, the separated fine coal is mixed and stirred by an additive consisting of a liquid, the additive contains heavy hydrocarbons obtained from coal or gasoline, the mixed and stirred fine coal, together with a fluidized bed The coal dried by the dryer is used as the raw material sent to the coke oven. (20) The method for drying coal according to the points (1), (3), (3), (12) or (15) is characterized in that the fine coal contained in the gas discharged from the fluidized bed is solidified Separated by gas separation, the separated micro-gentle coal is mixed and stirred by an additive made of liquid, the additive contains heavy hydrocarbons obtained from coal or gasoline, and the mixed and disturbed fine coal is under pressure It is formed by a forming method, and the formed fine coal, together with the coal dried by a fluidized bed dryer, is used as a raw material sent to a coke oven. (21) Device for drying coal with a fluidized bed for drying coal. The paper size is applicable to China National Standard (CNS) A4 (210 X 297 mm) (Please read the precautions on the back before filling this page. ) ---------- Order ----- 镳 Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 9
w ^ r---^--------- (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製w ^ r --- ^ --------- (Please read the notes on the back before filling out this page) Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
Α7 五、發明說明( 乾燥機以及用於使煉焦爐送㈣煙道廢氣的—部份或全气 供應到流化床乾燥機的氣體管路,其特徵在於包含. -氣體循環管路’用於將從該流化床乾燥機排出的氣 體,循環和供應回到該流化床乾燥機,及 、乳體循%系統控制H,用來控制使得當煉焦爐送出 的煙道廢氣的供應令斷或減少時,從流化床乾燥機排出的 氣體被循環和再使用作為往該流化床乾燥機的進送氣體。 。(22)用於乾燥煤炭之裝置,具有用於乾燥煤炭的流化床 乾燥機以及用於使煉焦爐送出的煙道廢氣的一部份或全部 供應到流化床乾燥機的氣體管路,其特徵在於包含: 一氣體循環管路1於將從該流化床乾燥機排出的氣 體,循環和供應回到該流化床乾燥機, -氣體循環系統控制器,用來控制使得從流化床乾燥 機排出的氣體被循環和再使用作為往該流化床乾燥機的進 送氣體,及 、,-煤炭進送量控制器,絲控制使得當煉焦爐送出的 煙道廢氣中斷或減少時,送到流化床的煤炭量減少。 (23)用於乾雜炭之裝置,具有用於乾燥煤炭的流化床 乾燥機以及用於使煉焦爐送出的煙道廢氣的—部份或全部 供應到流化床乾燥機的氣體管路’其特徵在於包含: 氣體循環管路,用於將該流化床乾燥機排出的氣體, 循環和供應回到該流化床乾燥機,及 -氣體循環系統控制器’用來控制使得從流化床乾燥 機排出的氣體被循環和再使用作為往該流化床乾燥機Α7 V. Description of the invention (Drying machine and the gas pipeline used to make the coke oven send the flue flue gas—partial or full gas is supplied to the fluidized bed dryer, which is characterized by containing. The gas discharged from the fluidized bed dryer is circulated and supplied back to the fluidized bed dryer, and the milk circulation system control H is used to control the supply order of the flue gas when the coke oven sends out When it is broken or reduced, the gas discharged from the fluidized bed dryer is recycled and reused as the feed gas to the fluidized bed dryer. (22) The device for drying coal has a stream for drying coal. A fluidized bed dryer and a gas pipeline for supplying a part or all of the flue gas exhausted from a coke oven to a fluidized bed dryer are characterized by comprising: a gas circulation pipeline 1 The gas discharged from the bed dryer is circulated and supplied back to the fluidized bed dryer, a gas circulation system controller for controlling the gas discharged from the fluidized bed dryer to be recycled and reused as the fluidized bed Feed air of dryer , And ,,-the coal feed amount controller, the silk control makes the amount of coal sent to the fluidized bed decrease when the flue gas from the coke oven is interrupted or reduced. (23) The device for dry miscellaneous carbon has A fluidized bed dryer for drying coal and a gas line for supplying part or all of the flue exhaust gas from a coking oven to a fluidized bed dryer is characterized in that it includes: a gas circulation line for The gas discharged from the fluidized bed dryer is circulated and supplied back to the fluidized bed dryer, and the gas circulation system controller is used to control the gas discharged from the fluidized bed dryer to be recycled and reused. As the fluid bed dryer
本紙張尺度適用中國國家標準(CNS)A4規格(21〇 χ 297公釐 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明() 送氣體, 一用來控制的煤炭釋放量控制器,使得當煉焦爐送出 的煙道廢氣的供應中斷或減少時,藉減少從流化床釋出的 煤炭量’流化床的煤炭層厚度被維持。 (24) 根據要點(22)或(23)之用於乾燥煤炭之裝置,其特 徵在於:送入該流化床的氣體量被控制,以致於當來自煉 焦爐的煙道廢氣的供應中斷或減少時,該乾燥機出口的煤 炭溫度被保持幾乎一定。 (25) 根據要點(22)或(23)之用於乾燥煤炭之裝置,其特 徵在於·送到该流化床的煤炭量被控制,以致於往該流化 床的進送氣體溫度和在該流化床乾燥機出口的氣體溫度之 間的差異,落在一預定範圍内。 (26) 根據要點(22)或(23)之用於乾燥煤炭之裝置,其特 徵在於:當煉焦爐送出的煙道廢氣的供應持續時,氣體循 環系統控制器被用來控制,使得煉焦爐送出的煙道廢氣被 使用作為往該流化床乾燥機的進送氣體,且煤炭進送量控 制器被用來增加送往該流化床的煤炭量,以致於在該乾燥 機出口的煤炭溫度被保持在預定溫度範圍内。 (27) 根據要點(26)之用於乾燥煤炭之裝置,其特徵在於·· 送入該流化床的煤炭量被增加,以致於往該流化床的進送 氣體溫度和該流化床乾燥機出口的氣體溫度之間的差異落 在預定範圍内。 (28) 根據要點(21)、(22)或(23)之用於乾燥煤炭之裝置, 其特徵在於:從該流化床乾燥機排出的氣體以及將被進送 ^裝-----r---訂---------. Γ%先閱讀背面之注意事項再填寫本頁}This paper size applies the Chinese National Standard (CNS) A4 specification (21 × χ 297 mm 491888, printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs, printed A7. 5. Description of the invention () Send gas, a controller for controlling the amount of coal released So that when the supply of flue gas from the coke oven is interrupted or reduced, the coal bed thickness of the fluidized bed is maintained by reducing the amount of coal released from the fluidized bed. (24) According to the point (22) or (23) The device for drying coal is characterized in that the amount of gas fed into the fluidized bed is controlled so that when the supply of flue gas from the coke oven is interrupted or reduced, the temperature of the coal at the outlet of the dryer is (25) The device for drying coal according to the point (22) or (23) is characterized in that the amount of coal sent to the fluidized bed is controlled so that the feed to the fluidized bed The difference between the gas temperature and the gas temperature at the outlet of the fluidized bed dryer falls within a predetermined range. (26) The device for drying coal according to the point (22) or (23) is characterized by: When the coke oven sends out When the supply of flue gas is continued, the gas circulation system controller is used to control, so that the flue gas from the coke oven is used as the feed gas to the fluidized bed dryer, and the coal feed controller is It is used to increase the amount of coal sent to the fluidized bed so that the temperature of the coal at the outlet of the dryer is maintained within a predetermined temperature range. (27) The device for drying coal according to the point (26) is characterized in that The amount of coal fed to the fluidized bed is increased so that the difference between the temperature of the gas fed to the fluidized bed and the temperature of the gas at the outlet of the fluidized bed dryer falls within a predetermined range. (28) The device for drying coal according to the point (21), (22) or (23), characterized in that the gas exhausted from the fluidized bed dryer and will be fed ^ --- -Order ---------. Γ% Please read the notes on the back before filling in this page}
本紙張尺度適財國國家標準(CNS)A4規格(210 X 297公楚) 491888This paper is suitable for the national standard (CNS) A4 specification of the rich country (210 X 297). 491888
五、發明說明( 經濟部智慧財產局員工消費合作社印製 到流化床乾燥機的循環氣體的通路的一部份或全部被熱絕 緣,且加熱裝置被提供來加熱部份氣體。 (29) 根據要點(21)、(22)或(23)之用於乾燥煤炭之裝置, 其特徵在於:當從流化床乾燥機排出的氣體被循環且再使 用作為往該流化床乾燥機的進送氣體時,組設於循環氣體 通路的灰塵捕集器的氣體清潔控制器,為了清潔的目的被 用來吹入氣體,一乾燥機廢氣控制器被用來控制,使得與 該吹入氣體所增加的氣體量對應的氣體量,被添加到排到 外面的氣體量。 (30) 根據要點(21)、(22)或(23)之用於乾燥煤炭之裝置, 包含: 一煙包’以使從該流化床乾燥機排出的氣體釋放到外 面, 一廢氣管路,以將由該流化床乾燥機排出的氣體傳送 到該煙食, 第一號控制閥,組設於一氣體管路上,以便使煉焦爐 送出的煙道廢氣的一部份或全部供應到該流化床乾燥機, 以及一用於第一號控制閥的控制器, 第二號控制閥,組設於該廢氣管路上,以及用咬該第 二號控制閥的控制器, 。 第三號控制閥,組設於該氣體循環管路上,以及用於 第三號控制閥的控制器;及 控制使得當由該流化床乾燥機排出的廢氣被循環並被 再使用作為往該流化床乾燥機的進送氣體時,用於第一號 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) -----------裝-----:----訂---------I (請先閱讀背面之注意事項再填寫本頁) A7 五、發明說明( 12 控制閥的控制器關閉第一號 控制器關閉第,制門 第二號控制閥的 …贫 制閥’以及用於第三號控制閥的控制 裔打開第三號控制閥。 (3D根據要點⑵)、(22)或(23)之用於乾燥煤炭之裝置, 其特徵在於:該科《具有《线“㈣道廢氣的 供應中斷或減少之前發出信號的裝置,遵循根據該馨告信 號的順序,該氣體循環系統控制器、該煤炭進送量控制器、 '"亥2釋放!控制器、該加熱裝置、該灰塵捕集器的該氣 體/月办控制、及用於第—號至第三號控制閥的控制器, 進行下述動作中的一或多個: 〇 改變被循環和使用作為往該流化床乾燥機的進送氣體 的廢氣量, 改變送到流化床的煤炭量, 改變從流化床排出的煤炭量, 加熱循環氣體,及 吹入氣體俾清潔灰塵捕集器。 週式簡要說 乾燥煤炭用的系統的大致示意 第1圖係根據本發明 ^裝---------訂--------- (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 圖 第2圖係根據本發,明 用之系統的部份示意圖。 第3圖係根據本發明,具有一配備有加熱裝置之灰塵才 集器的乾燥煤炭用的系統的部份示意圖。 第4圖係顯示煉焦爐之燃燒氣體系統的變換狀態的后V. Description of the Invention (Part or all of the circulation gas path printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs to the fluidized bed dryer is thermally insulated, and the heating device is provided to heat part of the gas. (29) The device for drying coal according to the point (21), (22), or (23) is characterized in that when the gas discharged from the fluidized bed dryer is circulated and reused as an inlet to the fluidized bed dryer When sending gas, the gas cleaning controller of the dust trap set in the circulating gas path is used to blow in the gas for cleaning purposes. A dryer exhaust gas controller is used to control the The amount of gas corresponding to the increased amount of gas is added to the amount of gas discharged to the outside. (30) The device for drying coal according to the point (21), (22), or (23) includes: a cigarette pack 'to The gas discharged from the fluidized bed dryer is released to the outside, and an exhaust gas pipeline is used to transfer the gas discharged from the fluidized bed dryer to the smoke and smoke. The first control valve is arranged on a gas pipeline. To make the coke oven Part or all of the flue gas sent out is supplied to the fluidized bed dryer, and a controller for the first control valve and a second control valve are arranged on the exhaust pipe, and are used to bite The controller of the second control valve, the third control valve is arranged on the gas circulation pipeline, and the controller for the third control valve; and the control is performed when the fluidized bed dryer is discharged When the exhaust gas is circulated and reused as the feed gas to the fluidized bed dryer, it is used for the first paper size of this paper to apply Chinese National Standard (CNS) A4 specification (210 X 297 mm) ---- ------- Installation -----: ---- Order --------- I (Please read the notes on the back before filling this page) A7 V. Invention Description (12 Control The controller of the valve is closed. The first controller is closed, the second control valve is made of the “lean valve” and the control valve for the third control valve is used to open the third control valve. (3D according to the points ⑵) , (22) or (23) The device for drying coal is characterized in that the section of the The device that sends out the signal before, follows the sequence of the signal, the gas circulation system controller, the coal feed amount controller, '" Hai 2 release! Controller, the heating device, the dust trap The gas / month office control, and the controller for the first to the third control valve, perform one or more of the following actions: 〇 change is recycled and used as the to the fluidized bed dryer The amount of exhaust gas fed into the gas changes the amount of coal sent to the fluidized bed, changes the amount of coal discharged from the fluidized bed, heats the circulating gas, and blows in the gas to clean the dust trap. Zhou Shi briefly said that for drying coal The general schematic of the system. Figure 1 is based on the present invention --------- Order --------- (Please read the precautions on the back before filling out this page) Intellectual Property Bureau of the Ministry of Economic Affairs The second drawing of the employee consumer cooperative printing chart is a partial schematic diagram of the system used in accordance with this publication. Fig. 3 is a partial schematic view of a system for drying coal having a dust collector equipped with a heating device according to the present invention. Fig. 4 shows the post-transition state of the combustion gas system of the coke oven.
配備有一熱氣產生器之乾燥煤J 本紙張尺度適用中國國家標準規格⑽χ 297公复τ 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明(3 式。 第5圖為顯示在本發明之實例一的控制狀態的圖式。 第6圖為顯示本發明之實例二的控制狀態的圖式。 第7圖為顯示本發明之實例三的控制狀態的圖式。 第8圖為顯示本發明之實例四中,來自煉焦爐之煙道廢 氣的變換狀態的圖式。 較佳實施例 本發明的實施例係根據第1至4圖描述於下。 產生於煉焦爐1的燃燒廢氣,在通過煙道2之後,透過 煉焦爐1的煙ϋ 4釋放到大氣。通過煙道2的燃燒廢氣溫度為 150C至250°C,而煉焦爐產生大約i,000t/日(6〇t/h的(溼)煤 炭釋放率),燃燒廢氣體積大約為60,000m3/h。 煤炭從煤炭進送機15被進送到流化床乾燥機7,當從下 方的分散板14進送氣體34時,熱氣被吹進,且進送到乾燥 機的煤炭形成流化床13,往上氣體流通過分散板14。含在 煤炭中的溼氣在流化床13中被乾燥,煤炭在被調整到規定 的溫度及規定的溼氣含量之後,從流化床乾燥機7釋放出。 根據本發明,來自煉焦爐1的廢氣,透過煉焦爐煙道2 分枝出來的氣體管路8和送風機12,被供應到流化床乾燥機 7。從>’ιι_化床乾餘機7釋放出的廢氣32,在通過灰塵捕集16 以及透過廢氣管路17經過送風機18之後,經由煙自2〇釋放 到大氣。一袋式過濾器可用作為灰塵捕集器丨6。旋風式灰 塵捕集器亦可適用,但是由於旋風式灰塵捕集器無法分離 和捕獲顆粒尺寸約為20 μ m的微細煤炭,所以袋式過濾器有 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) ^----------^--------- (請先閱讀背面之注意事項再填寫本頁) 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明(1 、寺疋車乂佳的且,可能使流化床乾燥機7的廢氣Μ循環通 過廢氣管路17分枝出的氣體循環管路21,並重新使用廢氣 作為流化床乾燥機的進送氣體3 4。 用於煉焦爐送出之廢氣,供控制煉焦m之煙道壓力之 T的廢氣流量計5和控制閥6,被組設於煉焦爐的煙道2。流 $計9和第-號控制閥職組設於氣體管路8上,第二號控 制閥19被組設於廢氣管路17上,第三號控制閥咖組設於 氣體猶環管路21上。由於廢氣體積可藉由燃燒計算而估計 出’所以廢氣流量計5不是必要的。第—號至第三號控制閥 的開口和流率可被各自的控制器(26_28)調節。而且,煤炭 進送機15的煤炭進送率受到煤炭進送率控制器以控制,流 化床乾燥機送出的煤炭釋放率受到煤炭釋放率控制器25控 制。藉纟·給予控制指+到供第一㈣第三號控制閥所用的 控制器,氣體循環系統控制器23可控制循環氣體。 熱氣產生器11(第2圖)產生的熱氣可作為用於流化床乾 燥機7的一部份進送氣體。煉焦爐送出的廢氣或用於流化床 乾燥機7作為進送氣體的循環氣體,除了被直接供應到流化 床乾燥機7以外,亦可用於熱氣產生器丨丨作為進送氣體。 煉焦爐1通常有兩個燃燒氣體系統。藉由在預定燃燒時 間經過後從一系統變換到另一系統,燃燒總是維持在兩個 系統中的其中一者。此變換通常每15到3〇分鐘一次。在燃 燒氣體系統的變換期間,使用到那時為止的系統的燃燒氣 體流(系統a),逐漸減少到第4圖最上排所示,當流動降低到 零’從那時起(系統b)使用的系統的燃燒氣體流率,逐漸增 β 裝---------訂---------* (請先閱讀背面之注意事項再填寫本頁)Dry coal equipped with a hot gas generator J This paper is scaled to the Chinese national standard ⑽χ 297 公 复 τ 491888 Printed by the Consumers ’Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs A7 5. Formulation of the invention (formula 3) Figure 5 shows the invention Diagram of the control state of the first example. Fig. 6 is a diagram showing the control state of the second example of the present invention. Fig. 7 is a diagram of the control state of the third example of the present invention. Fig. 8 is a diagram showing the control state. In the fourth embodiment of the invention, a diagram of the transition state of the flue gas from the coke oven. Preferred Embodiments The embodiments of the present invention are described below based on Figures 1 to 4. The combustion exhaust gas generated in the coke oven 1 is in After passing through the flue 2, it is released to the atmosphere through the soot 4 of the coke oven 1. The temperature of the combustion exhaust gas passing through the flue 2 is 150C to 250 ° C, and the coke oven produces about 10,000t / day (60t / h (Wet) coal release rate), the volume of combustion exhaust gas is about 60,000m3 / h. Coal is fed from the coal feeder 15 to the fluidized bed dryer 7, and when the gas 34 is fed from the lower dispersion plate 14, the hot gas Blown in and fed to dryer The coal forms a fluidized bed 13, and the gas flows upward through the dispersion plate 14. The moisture contained in the coal is dried in the fluidized bed 13, and after the coal is adjusted to a predetermined temperature and a predetermined moisture content, the coal is removed from the flow. The fluidized bed dryer 7 is released. According to the present invention, the exhaust gas from the coke oven 1 is supplied to the fluidized bed dryer 7 through the gas pipe 8 and the blower 12 branched out of the coke oven flue 2. From > The exhaust gas 32 released from the chemical bed dryer 7 is released to the atmosphere through smoke after being captured by dust 16 and blower 18 through exhaust pipe 17. A bag filter can be used as dust capture Collector 丨 6. Cyclone dust collector is also applicable, but because the cyclone dust collector cannot separate and capture fine coal with a particle size of about 20 μm, the bag filter has the paper size suitable for China Standard (CNS) A4 specification (210 X 297 mm) ^ ---------- ^ --------- (Please read the notes on the back before filling this page) 491888 Ministry of Economic Affairs A7 printed by the Intellectual Property Bureau's Consumer Cooperatives V. Invention Description (1, Temple Car Moreover, it is possible to circulate the exhaust gas M of the fluidized bed dryer 7 through the gas circulation line 21 branched from the exhaust gas line 17 and reuse the exhaust gas as the feed gas 34 of the fluidized bed dryer. The exhaust gas from the coking oven, the exhaust gas flow meter 5 and the control valve 6, which are used to control the coke m flue pressure T, are arranged in the coke oven flue 2. The flow meter 9 and the No.-control valve group On the gas line 8, the second control valve 19 is arranged on the exhaust gas line 17, and the third control valve is arranged on the gas still ring line 21. Because the volume of the exhaust gas can be estimated by combustion calculation Out 'so the exhaust gas flow meter 5 is not necessary. The openings and flow rates of control valves Nos.-3 can be adjusted by the respective controllers (26_28). Moreover, the coal feed rate of the coal feeder 15 is controlled by the coal feed rate controller, and the coal release rate from the fluidized bed dryer is controlled by the coal release rate controller 25. The gas circulation system controller 23 can control the circulating gas by giving the control finger + to the controller for the first, third, and third control valves. The hot gas generated by the hot gas generator 11 (Fig. 2) can be used as part of the feed gas for the fluidized bed dryer 7. The exhaust gas from the coke oven or the circulating gas used as the feed gas for the fluidized bed dryer 7 is not only directly supplied to the fluidized bed dryer 7, but also used as a hot gas generator 丨 as the feed gas. The coke oven 1 usually has two combustion gas systems. By switching from one system to another after a predetermined combustion time has elapsed, combustion is always maintained in one of the two systems. This change is usually every 15 to 30 minutes. During the transition of the combustion gas system, the combustion gas flow using the system up to that time (System a) is gradually reduced to the top row shown in Figure 4. When the flow is reduced to zero, 'from then (System b) is used The combustion gas flow rate of the system gradually increases β installed --------- Order --------- * (Please read the precautions on the back before filling this page)
本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 491888 A7 五、發明說明( 加。為此理由,煉焦爐送出的廢氣流率降低,變成零,然 後在燃燒變換期間再次增加。燃燒變換所需的時間一般為2 至3分鐘。在使用煉焦爐送出的煙道廢氣作為流化床乾燥機 7的進送氣體的方法中,煉焦爐所送出作為進送氣體的廢氣 供應,在煉焦爐1的燃燒變換期間被中斷。 藉由本發明,當煉焦爐送出的煙道廢氣的供應中斷或 減少時,從流化床乾燥機7釋出的氣體被循環通過氣體循環 管路21,以便再度使用作為流化床乾燥機的進送氣體。此 程序特別根據第1至4圖描述於後。 組設於氣體循環管路21的第三號控制閥22,在穩定操 作期間保持關閉或稍微打開,用以控制乾燥機出口處的煤 炭溫度。若來自煉焦爐1的煙道氣體溫度,在穩定操作期間 太高,則藉由混合小量較冷的循環氣體來降低氣體溫度是 有效的,而且當進送的煤炭的溼度起伏不定時,循環氣體 亦可用來控制乾燥能力(capacity)。 在煉焦爐1的燃燒變換開始,第三號控制閥22從一關閉 位置或稍微打開位置,打開到一特定程度。藉此,建立起 循環氣體33藉送風機12和18通過氣體循環管路21的再循環 流。當確保循環氣體33在規定的流率時,第一號控制閥1〇 逐漸關閉,結果,從煉焦爐往流化床乾燥供應到那時為 止的煙道廢氣量,逐漸減少,而流到煙囪4的量增加。第一 说控制閥10的閥致動速度,不必然是一定的,必須根據練 焦爐的操作狀況決定,因為燃燒廢氣量根據煉焦爐1的操作 率或其燃燒狀況而變動。 衣紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公* ) (請先閱讀背面之注意事項再填寫本頁) 裝-----^--— 訂----I I I I 1 . 經濟部智慧財產局員工消費合作社印製 16491888 A7 五、發明說明() 當氣體通過氣體循環管路21而循環時,亦打開第二號 控制闊22及關閉第二號控制閥,亦是可接受的。夢此 防止在氣體循環期間,氣體從煙囪2〇流回氣體循環管路^ 的現象發生。 第一至三號控制閥,可基於來自氣體循環系統控制器U 的指令,而被各自的控制器(26-28)控制。當然可能使氣體 循裱系統控制器23與用於第一至三號控制閥的控制器 的一部份或全部聯合起來,成為一個控制單元。或者,用 於控制閥的控制器可被整合到各自的控制閥。 在煉焦爐1的燃燒變換期間,用於流化床乾燥機7的進 送氣體的改變的控制,可在接收到從煉焦爐燃燒變換開始 信號時開始,或根據煙道廢氣流量計5等測出的煙道廢氣的 流率的改變而開始。在燃燒變換開始之前的一特定期間, 接收到來自煉焦爐i的警告信號,並根據警告信號開始流化 床乾燥機用的進送氣體的改變控制,是更好的,如第4圖之 中間和最下一排所示。在煙道廢氣流變成零之前,例如^分 鐘,收到警告信號,則通過氣體循環管路21的氣體再循環, 在收到警告信號時開始。以此方式,可避免由於氣體循環 開始的延誤,造成用於流化床乾燥機7的進送氣體的短缺問 題。 因為煉焦爐1的燃燒變換期間所用的循環氣體33,已被 用來乾燥流化床乾燥機7的煤炭,所以當然其溫度低於煉焦 爐送出的煙道廢氣’其溼度含量高。於是,其煤炭乾燥能 力傾向於較煉焦爐送出的煙道廢氣低。藉本發明,在使用 私紙張尺度適國國家標準(cKs)A4規格(210 x 297公爱 (請先閱讀背面之注意事項再填寫本頁) -裝-----r---tl--------- 經濟部智慧財產局員工消費合作社印製 說明() ,環氣體之時,藉由減少往流化床乾燥機7的流化扣的煤 二進送率’從流化床乾燥機7排出的煤炭的乾燥程度可維持 —定。在此射,控㈣炭進送率,使得在乾燥機的輪送 側的煤炭溫度保持是較佳的,藉此,煤炭渥度含量可 :持大約-定。此結果來自於一個事實,即儘管在乾燥機 輪送側的煤炭溫度可被正確地測量,但是對煤炭澄度含量 做穩定的線上(。n-line)測量是困難的。較佳的是,煤炭溫度 計30被組設在接近流化區域的出口。將其插入煤炭層,: 第1圖標號3Ga所示就在流化床出口處的煤炭釋放器37的正 上方’或如第1圖標號30b所示,就在釋放煤炭卸載管正下 方,是可接受的。 、在循環氣體使用期間,煤炭往流化床13的進送率亦可 被控制,使得進送氣體往流化床的溫度以及在流化床乾燥 機出口的氣體溫度之間的差異’落在預定範圍内。因為供 應到流化床的氣體量為了維持流化狀況被大致保持一定, 所以進送氣體溫度和乾燥機出口之間的差異的改變,正比 於每單位時間由氣體傳送到煤炭的熱量。因此,藉由控制 煤炭進送率,因而上述熱量落在預定範圍内,保持乾燥機 輸送側的煤炭溼度含量在一目標範圍内是有可能的。 當如上述般減少往流化床乾燥機7的煤炭進送率時,較 佳的疋,藉由同時間減少流化床乾燥機7的煤炭釋放率,以 維持流化床13的煤炭層厚度為一定。此理由在於,若流化 床乾燥機的煤炭釋放率保持不變而無減少,結果,停留在 w化床乾燥機中的煤炭量減少,流化床丨3中的煤炭層變薄 491888 經濟部智慧財產局員工消費合作社印製This paper size applies the Chinese National Standard (CNS) A4 specification (210 X 297 mm) 491888 A7 V. Description of the invention (plus. For this reason, the exhaust gas flow rate from the coke oven is reduced to zero, and then again during the combustion shift Increased. The time required for combustion conversion is generally 2 to 3 minutes. In the method using the flue gas from the coke oven as the feed gas for the fluidized bed dryer 7, the coke oven sends the exhaust gas as the feed gas Is interrupted during the combustion conversion of the coke oven 1. With the present invention, when the supply of flue gas from the coke oven is interrupted or reduced, the gas released from the fluidized bed dryer 7 is circulated through the gas circulation line 21 In order to use the feed gas of the fluidized bed dryer again. This procedure is described in particular according to Figures 1 to 4. The third control valve 22 set in the gas circulation line 21 is kept closed during stable operation Or slightly open to control the temperature of the coal at the outlet of the dryer. If the temperature of the flue gas from the coke oven 1 is too high during stable operation, mix a small amount of the colder Circulating gas is effective to reduce the gas temperature, and when the humidity of the fed coal fluctuates irregularly, the circulating gas can also be used to control the drying capacity. At the beginning of the combustion conversion of the coke oven 1, the third control valve 22 starts from A closed position or a slightly open position, opened to a certain degree. Thereby, a recirculation flow of the circulating gas 33 through the gas circulation line 21 by the blowers 12 and 18 is established. When the circulating gas 33 is ensured at a prescribed flow rate, The first control valve 10 gradually closed, and as a result, the amount of flue gas exhausted from the coke oven to the fluidized bed was gradually reduced, and the amount of the exhaust gas flowing to the chimney 4 increased. The first said that the control valve 10 The valve actuating speed is not necessarily fixed, and must be determined according to the operating conditions of the coke oven, because the amount of combustion exhaust gas varies according to the operating rate of the coking oven 1 or its combustion condition. The Chinese paper standard applies to China Standard (CNS) A4 Specifications (210 X 297 male *) (Please read the precautions on the back before filling out this page) Install ----- ^ --- Order ---- IIII 1. Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 164 91888 A7 V. Description of the invention () When the gas is circulated through the gas circulation pipe 21, it is also acceptable to open the second control valve 22 and close the second control valve. The dream prevents this during the gas circulation, The phenomenon that gas flows from the chimney 20 back to the gas circulation pipe ^ occurs. The first to third control valves can be controlled by the respective controllers (26-28) based on the instructions from the gas circulation system controller U. Of course It is possible to combine the gas circulation system controller 23 with a part or all of the controllers for the first to third control valves to form a control unit. Alternatively, the controllers for the control valves may be integrated into the respective The control valve for changing the feed gas of the fluidized bed dryer 7 during the combustion conversion of the coke oven 1 may be started when a signal from the coke oven combustion conversion start is received, or according to the flue gas exhaust flow rate The change in the flow rate of the flue gas measured by the meter 5 and the like started. It is better to receive a warning signal from the coke oven i and start the change control of the feed gas for the fluidized bed dryer according to the warning signal in a specific period before the combustion shift starts, as shown in the middle of FIG. 4 And shown in the bottom row. Before the exhaust gas flow of the flue becomes zero, for example, a warning signal is received, the gas recirculation through the gas circulation pipe 21 is started, and the warning signal is started. In this way, it is possible to avoid the shortage of the feed gas for the fluidized bed dryer 7 due to the delay in the start of the gas cycle. Because the circulating gas 33 used during the combustion conversion of the coke oven 1 has been used to dry the coal of the fluidized bed dryer 7, its temperature is of course lower than that of the flue gas from the coke oven, and its humidity content is high. As a result, its coal drying capacity tends to be lower than that of flue gas from coke ovens. By using the present invention, in the use of private paper standard national standard (cKs) A4 specifications (210 x 297 public love (please read the precautions on the back before filling this page) -install ----- r --- tl- -------- Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs (), when the gas is circulating, by reducing the coal feed rate to the fluidized bed dryer 7 of the fluidized bed dryer 7 The drying degree of the coal discharged from the chemical bed dryer 7 can be maintained. The injection rate is controlled here, so that the temperature of the coal on the rotating side of the dryer is kept better. The content can be: about-fixed. This result comes from the fact that although the coal temperature on the dryer side of the dryer can be measured correctly, a stable online (.n-line) measurement of the coal clarity content is Difficult. Preferably, the coal thermometer 30 is arranged near the outlet of the fluidized area. Insert it into the coal layer, as shown in the first icon No. 3Ga at the right of the coal releaser 37 at the outlet of the fluidized bed. Above 'or as shown in the first icon number 30b, it is just below the release coal unloading pipe, which is acceptable. During the use of circulating gas, the feed rate of coal to the fluidized bed 13 can also be controlled, so that the difference between the temperature of the feed gas to the fluidized bed and the gas temperature at the outlet of the fluidized bed dryer 'falls within a predetermined range. Within the range. Because the amount of gas supplied to the fluidized bed is kept approximately constant in order to maintain the fluidization condition, the difference between the feed gas temperature and the dryer outlet is changed proportional to the heat transferred from the gas to the coal per unit time. Therefore, by controlling the coal feed rate, so that the above-mentioned heat falls within a predetermined range, it is possible to keep the coal moisture content of the dryer's conveying side within a target range. When reducing to a fluidized bed dryer as described above When the coal feed rate of 7 is better, it is better to keep the coal bed thickness of the fluidized bed 13 constant by reducing the coal release rate of the fluidized bed dryer 7 at the same time. This reason is that if the fluidized bed The coal release rate of the dryer remains unchanged without reduction. As a result, the amount of coal remaining in the w-bed dryer is reduced, and the coal layer in the fluidized bed is thinned. 491888 Intellectual Property Bureau, Ministry of Economic Affairs Printed by Employee Consumer Cooperative
f----------^--------- (請先閱讀背面之注意事項再填寫本頁) A7 五、發明說明(1 可能導致在流化床13的流化煤炭區域的壓差的降低,於是, 無法穩定流化(漏氣)。 因為煉焦爐的燃燒變換所需時間,只有約2至3分鐘, 所以流化床乾燥機使用再循環氣體期間的時間週期亦=。 因此,雖然氣體的煤炭乾燥能力因在該期間循環進送氣體 而祕,但藉減少煤炭進送,在乾燥後可媒保相當程度的 煤炭品質’額外地’可降低上述的煤炭釋放率和由於減少 的煤炭進送率造成的乾燥煤炭產量的減少。 當煉焦爐處的燃燒變換完成,且來自煉焦爐的煙道廢 氣的流率回到正常’使用煙道廢氣送入流化床乾燥機7變得 可能。在保持送到流化床乾燥機7的氣體體積大致一定時, 藉由打開第一號控制閥10(其在燃燒變換期間被關閉)和第二 號控制閥19’煙道廢氣被引人作為流化床乾燥機7的進送氣 體。因為進送氣體的煤炭乾燥能力,隨著氣體的改變而增 加所以送到流化床的煤炭進送率增加,以致於從流化床 乾燥機7排出的煤炭溫度婊持在預定目標範圍。藉此,氣體 改變操作被完成’而同時控制從流化床乾燥機7排出的煤炭 的渔度含量到各自的目標。亦可接受的是,增加往流化床 的煤炭進送率,因而用於流化床的進送氣體的溫度,和流 化床乾燥機出口處的氣體溫度之間的差異,落在預定範圍 内。 —關於煉f、爐的燃燒變換期間,用於流化床乾燥機的進 送氣體的控制,改變的操作可根據關於再使用循環氣體體 積的改變和往流化床乾燥機的煤炭進送率的預定模式而做f ---------- ^ --------- (Please read the notes on the back before filling out this page) A7 V. Description of the invention (1 may cause the flow in the fluidized bed 13 The pressure drop in the coal region is reduced, so the fluidization (leakage) cannot be stabilized. Because the time required for the combustion shift of the coke oven is only about 2 to 3 minutes, the time during which the fluidized bed dryer uses the recirculated gas The period is also =. Therefore, although the coal drying capacity of gas is secreted due to the gas feeding cycle during this period, by reducing the coal feeding, a considerable degree of coal quality can be preserved after drying, and the above-mentioned coal can be reduced. Release rate and reduction of dry coal production due to reduced coal feed rate. When the combustion shift at the coke oven is complete and the flow rate of flue gas from the coke oven returns to normal, use flue gas to feed into the fluidization The bed dryer 7 becomes possible. While maintaining the volume of the gas sent to the fluidized bed dryer 7 to be approximately constant, by opening the first control valve 10 (which is closed during the combustion shift) and the second control valve 19 'Fume exhaust is attracted as fluid bed drying Feed gas of 7. Because the coal drying capacity of the feed gas increases with the change of gas, the coal feed rate to the fluidized bed increases, so that the temperature of the coal discharged from the fluidized bed dryer 7 is controlled. Within a predetermined target range. By this, the gas changing operation is completed while controlling the fishery content of the coal discharged from the fluidized bed dryer 7 to the respective targets. It is also acceptable to increase the coal feed to the fluidized bed The feed rate, therefore, the difference between the temperature of the feed gas used in the fluidized bed and the gas temperature at the exit of the fluidized bed dryer falls within a predetermined range.-Regarding the refining f and furnace combustion conversion, the Control of the feed gas to the fluidized bed dryer, the operation can be changed according to the predetermined pattern of the volume of the reused circulating gas and the coal feed rate to the fluidized bed dryer.
本紐尺度_ t @ @ 規格(210_ 297公釐) 19491888 A7 經濟部智慧財產局員工消費合作社印製 五 '發明說明( 出。此控制方法可有效的使用,特別是在送往流化 機的煤炭顯示出在溼度上有小程度的起伏變動時。“、 欲在氣體再循環期間’維持用於流化床乾燥機的進送 二:二Γ能力儘可能地高’較佳地是保持進送氣體 ,皿度儘了⑧地⑤,但不到損《炭品質的程度。藉本發明, 可能保持再循環氣體的煤炭乾燥能力,藉由下述方式:透 過應用絕熱於⑷從流化床乾燥機7出口往氣體循環管路21的 分枝點的廢氣管路17的部份、⑻灰塵捕集器16及⑷暴露於 士氣的氣體循環管路21的表面;以及藉由組設蒸汽管路(藉 蒸汽)或組設加熱裝置29(利用電熱器或高溫氣體等等”加 熱上述絕熱部份的部份或全部,而使熱損失儘可能地小。 在氣體管路的例子中,藉由以熱絕緣材料使他們絕緣而減 少熱損失是可能的。第3圖顯示加熱裝置29被組設於灰塵捕 集器16的情形。 當袋式過濾器被用作為灰塵捕集器16時,有時實行氣 體吹送操作,以便除去該袋式過濾器的過濾布的灰塵,諸 如空氣反向吹送或空氣或氮氣的脈衝式吹送到過濾布。本 發明允终上述在氣體再循環期間,藉由釋放相當於氣體吹 送到系統外面(在第1圖中透過煙囪27)的氣體量,吹送氣體 以 ¥灰塵捕集器的方法。煤炭乾燥能力可因此而增加, 因為清潔氣體的灰塵捕集器是與再循環氣體混合,再循環 氣體的溼度被降低。 如前述’亦可能使用熱氣產生器U產生的熱氣,連同 煉焦爐送出的煙道廢氣,一起作為流化床乾燥機7的進送氣 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公羞)Specifications of this button _ t @ @ Specifications (210_ 297 mm) 19491888 A7 Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs of the People's Republic of China (5) Invention Description (This control method can be effectively used, especially when it is sent to the fluidizer When coal shows a small degree of fluctuation in humidity. "To maintain the feed for the fluidized bed dryer during gas recirculation II: Two Γ capacity as high as possible 'is better to keep the feed The gas was sent and the dish was exhausted to the ground, ⑤, but not to the extent that the quality of charcoal was impaired. With the present invention, it is possible to maintain the coal drying ability of the recycled gas by the following means: by applying heat insulation to the radon from the fluidized bed The part of the exhaust pipe 17 exiting the dryer 7 toward the branch point of the gas circulation pipe 21, the dust trap 16 and the surface of the gas circulation pipe 21 exposed to morale; Circuit (by steam) or set up heating device 29 (using electric heaters or high-temperature gas, etc.) to heat some or all of the above-mentioned thermal insulation parts, so that the heat loss is as small as possible. In the example of the gas pipeline, the Made of heat-insulating material It is possible to reduce heat loss by insulating them. Fig. 3 shows a case where the heating device 29 is installed in the dust trap 16. When a bag filter is used as the dust trap 16, a gas blowing operation is sometimes performed. In order to remove the dust of the filter cloth of the bag filter, such as reverse air blowing or pulse blowing of air or nitrogen to the filter cloth. The present invention allows the above-mentioned period to release the gas equivalent to the gas blowing during the gas recirculation. The amount of gas outside the system (through the chimney 27 in Figure 1), the method of blowing the gas to the dust trap. The coal drying capacity can be increased because the dust trap for the clean gas is mixed with the recycled gas, The humidity of the recirculated gas is reduced. As mentioned above, it is also possible to use the hot gas generated by the hot gas generator U, together with the flue gas from the coke oven, as the feed gas for the fluidized bed dryer 7. The paper dimensions apply to Chinese national standards ( CNS) A4 size (210 X 297 male shame)
LI ^---------t---------I (請先閱讀背面之注意事項再填寫本頁) 491888 A7 --—-—— B7 2〇 ' --------- 五、發明說明() --- 體。在氣體因煉焦爐的燃燒變換而再循環時,藉由增加熱 氣產生器η產生的氣體的溫度和流動,可維持用於流化床 乾無機7的進送氣體的煤炭乾燥能力。除了如第辦圖所示 使熱氣產生H 11產生的熱氣與再循環氣體混合的方法以 外,亦可能如第2(b)圖所示,升高再循環氣體本身的溫度, 使用再循環氣體33作為熱氣產生器丨丨的進送氣體。 在煉焦爐送出的煙道廢氣和熱氣產生器u產生的熱氣 被使用作為流化床乾燥機7的進送氣體的情況下,當煙道廢 氣的流動和熱量在燃燒變換等期間下降時,亦藉由增加供 應到熱氣產生器11的熱氣的熱量,以維持用於流化床乾燥 機7的煤厌乾燥能力是可能的。在此情況下,即使煙道廢氣 的供應有變動,藉由在煙道廢氣供應之後控制熱氣產生器^ 送出的熱氣的供應體積和溫度,以保持流化床乾燥機的正 常操作是可能的,以致於用於流化床乾燥機7的進送氣體的 供應體積和溫度維持在各自的預定目標值。亦可能藉由供 應煙道廢氣到熱氣產生器11中加熱,而提高煙道廢氣的溫 度。 由於在流化床13乾燥煤炭的結果,送到流化床乾燥機7 的氣體的溼度增加。在氣體從流化床乾燥機7通過直到透過 灰塵捕集器16經過煙囪20釋放到大氣期間,隨著氣體熱量 散失到周圍環境’氣體溫度下降。當氣體溫度掉到或低於 露點溫度,冷凝會發生。冷凝使袋式過濾器(常用於灰塵捕 集器16)的過濾布潮溼,造成過濾布的堵塞。 藉本發明,當煉焦爐送出的煙道氣體的一部份被供應 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) (請先閲讀背面之注意事項再填寫本頁) - I I I l· I I I ^ « — — — — — — I— 1 · 經濟部智慧財產局員工消費合作社印製 T5 五 發明說明(1 2流化床乾燥機7的充氣室35,作為進送氣體而在流化 無機7乾燥煤炭時,可能將來自煉焦爐的煙道廢氣的另-部 伤在抓化床乾燥機7的乾舷高度部段^和灰塵捕集器^間 =點’添加於流化床乾燥機7送出的廢氣中。因為煙道廢 乳是熱的,且其澄度含量低,所以與煙道廢氣混合的廢氣 溫度增高,且座度低,因而可防止廢氣系統中的冷凝。結 果’亦可防止袋式過渡器的過滤布的堵塞。 焦炭製造程序-般含有好幾個煉焦爐。在每個煉焦爐 中,燃燒變換的定時是同時的。然而,燃燒變換的定時可 在不同煉焦爐之間有不同。 藉本發明,一個煉焦爐的燃燒變換的定時與另一個煉 焦爐不同,且來自具有不同職變換定時的兩個煉焦爐的 煙道廢氣,被混合形成用於流化床乾燥機7的進送氣體。藉 此,一個煉焦爐的燃燒變換期間,來自另一個煉焦爐的煙 道廢氣可增加,於是可避免用於流化床乾燥機7的進送氣體 中斷,使得流化床乾燥機7連續及穩定地操作是可能的。 正如是必要的,首先,欲在流化床乾燥機7操作開始時 在流化床13乾燥煤炭,足夠量的進送氣體被供應到流化床13 且煤炭進送率逐漸增加。當煉焦爐送來的煙道廢氣被用作 為進送氣體時,不管流化床乾燥機7的操作狀況如何,進送 氣體的溫度總是很高。由於這個原因,在操作開始時煤炭 進送率很低時,煤炭被過度的乾燥,造成生產出的煤炭的 座度比預定要低。當煤炭過度乾燥,則在從乾燥機釋出之 後’存在著煤炭的灰塵散出或起火的危險。 491888 Α7 ------- Β7 22 '~ ------- — 五、發明說明() 藉本發明,藉由在操作初期增加水到流化床13中的煤 厌,並逐漸地增加煤炭進送率,可以維持從乾燥機釋出的 煤厌的溼度含量一定,以及防止在流化床乾燥機7運轉初期 發生過度乾燥。更特定言之,在煤炭送入的初始階段直到 一穩定流化狀態(煤炭層的壓力損失變成大約一定或到達一 預疋範圍)建立時為止的期間,水被加到流化床13,以對應 於穩定操作期間使煤炭的溼度乾燥和顯熱(sensible “叫上 升所需熱量的量。水可呈霧狀形式被喷灑到流化的煤炭層, 或者喷灑到接近流化床出口的乾舷高度部段的一或兩者, 在此處存在有往上的廢氣流且粗顆粒煤炭往釋放出口移 動0 送到化床乾综機7的煤炭的渥度含量,並非總是一 定,有時隨時間經過而變動。所以,當保持煤炭進送率一 定時,必須藉改變乾燥機的煤炭乾燥能力使乾燥機出口釋 出的煤炭的溼度含量維持一定。同時,為了維持流化床的 流化狀況一定,必須保持用於流化床乾燥機7的進送氣體的 流率一定。由於這個原因,進送煤炭的溼度含量的變動, 必須藉由透過進送氣體溫度的改變來改變煤炭乾燥能力而 克服。 。 藉本發明,其中來自煉焦爐的备道秦氣被用作為流化 床乾燥機的進送氣體,然而,煙道廢氣溫度被煉焦爐的操 作情況決定,即使進送煤炭的溼度含量變動,其無法改變。 藉本發明,不只是當來自煉焦爐的煙道廢氣的供應中 斷或減少時,而且亦在穩定操作狀態下,從流化床乾燥機 (請先閱讀背面之注意事項再填寫本頁) 裝-----r---訂--------- 經濟部智慧財產局員工消費合作社印製LI ^ --------- t --------- I (Please read the notes on the back before filling in this page) 491888 A7 --------- B7 2〇 '--- ------ V. Description of the invention () --- Body. When the gas is recirculated due to the combustion conversion of the coke oven, the coal drying capacity of the feed gas for the fluidized bed dry inorganic 7 can be maintained by increasing the temperature and flow of the gas generated by the heat generator η. In addition to the method of mixing the hot gas generated by H 11 with the recirculated gas as shown in the second figure, it is also possible to raise the temperature of the recirculated gas itself and use the recirculated gas as shown in FIG. 2 (b). As the feed gas of the hot gas generator. In the case where the flue gas from the coke oven and the hot gas from the hot gas generator u are used as the feed gas for the fluidized bed dryer 7, when the flow and heat of the flue gas is decreased during the combustion shift, etc., By increasing the heat of the hot gas supplied to the hot gas generator 11, it is possible to maintain the coal-avoiding drying capacity for the fluidized bed dryer 7. In this case, it is possible to maintain the normal operation of the fluidized bed dryer by controlling the supply volume and temperature of the hot gas sent from the hot gas generator ^ after the flue gas exhaust supply, So that the supply volume and temperature of the feed gas for the fluidized bed dryer 7 are maintained at respective predetermined target values. It is also possible to increase the temperature of the flue gas by supplying the flue gas to the hot gas generator 11 for heating. As a result of drying the coal in the fluidized bed 13, the humidity of the gas sent to the fluidized bed dryer 7 increases. While the gas passes from the fluidized bed dryer 7 until it is released to the atmosphere through the dust trap 16 through the chimney 20, the temperature of the gas decreases as the heat of the gas is lost to the surrounding environment. When the gas temperature drops to or below the dew point temperature, condensation will occur. Condensation wets the filter cloth of the bag filter (commonly used in the dust trap 16), causing the filter cloth to become clogged. By the invention, when a part of the flue gas sent from the coke oven is supplied, the paper size is applicable to the Chinese National Standard (CNS) A4 specification (210 X 297 mm) (Please read the precautions on the back before filling this page) -III l · III ^ «— — — — — — — I — 1 · T5 printed by the Consumers’ Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs. When the fluidized inorganic 7 is drying coal, another-part of the flue gas from the coke oven may be added to the stream at the freeboard height section ^ of the grabbed bed dryer 7 and the dust trap ^ between the points. In the exhaust gas sent from the chemical bed dryer 7. Because the flue waste milk is hot and its clarity is low, the temperature of the exhaust gas mixed with the flue gas is increased and the seat is low, so that condensation in the exhaust system can be prevented. As a result, the filter cloth of the bag transitioner can also be prevented from clogging. The coke manufacturing process generally includes several coke ovens. In each coke oven, the timing of the combustion change is simultaneous. However, the timing of the combustion change can be different Is there a coke oven? According to the present invention, the timing of the combustion conversion of one coke oven is different from that of the other coke oven, and the flue gas from two coke ovens with different job conversion timings are mixed to form a feed for the fluidized bed dryer 7. By this, during the combustion conversion of one coke oven, the flue gas from the other coke oven can be increased, so that the interruption of the feed gas for the fluidized bed dryer 7 can be avoided, so that the fluidized bed dryer 7 Continuous and stable operation is possible. As necessary, first, to dry the coal at the fluidized bed 13 at the beginning of the operation of the fluidized bed dryer 7, a sufficient amount of feed gas is supplied to the fluidized bed 13 and the coal The feed rate is gradually increasing. When the flue gas from the coke oven is used as the feed gas, the temperature of the feed gas is always high regardless of the operating condition of the fluidized bed dryer 7. For this reason, in When the coal feed rate is very low at the beginning of the operation, the coal is over-dried, resulting in a lower-than-predetermined coal. When the coal is over-dried, coal is present after it is released from the dryer. Danger of charcoal dust emission or fire. 491888 Α7 ------- Β7 22 '~ ------- — V. Description of the invention () With the present invention, by adding water to the flow in the early stage of operation Increasing the coal exhaustion in the fluidized bed 13 and gradually increasing the coal feed rate can maintain a constant humidity content of the coal exhausted from the dryer and prevent excessive drying in the initial stage of operation of the fluidized bed dryer 7. More specifically In other words, water is added to the fluidized bed 13 during the initial stage of coal feeding until a stable fluidized state (the pressure loss of the coal seam becomes approximately constant or reaches a predetermined range) is established, corresponding to the stability The humidity of the coal is dried and sensible during operation (sensible "called the amount of heat required for ascent. Water can be sprayed in the form of a mist to the fluidized coal bed, or to the freeboard height near the outlet of the fluidized bed" One or both of the sections, where there is an upward exhaust gas flow and the coarse-grained coal moves to the release outlet. The volatility of the coal sent to the chemical bed dryer 7 is not always constant, and sometimes varies with Time changes. Therefore, when the coal feed rate is maintained, the humidity content of the coal released from the dryer outlet must be maintained by changing the coal drying capacity of the dryer. Meanwhile, in order to maintain a constant fluidization condition of the fluidized bed, it is necessary to maintain a constant flow rate of the feed gas for the fluidized bed dryer 7. For this reason, the change in the moisture content of the fed coal must be overcome by changing the drying capacity of the coal by changing the temperature of the fed gas. . According to the present invention, the preparation gas from the coke oven is used as the feed gas of the fluidized bed dryer, however, the flue gas temperature is determined by the operation of the coke oven, even if the humidity content of the feed coal changes, its immutable. By means of the present invention, not only when the supply of flue gas from the coke oven is interrupted or reduced, but also in a stable operating state, from a fluidized bed dryer (please read the precautions on the back before filling this page). ---- r --- Order --------- Printed by the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs
A7 五、發明說明( 釋^的-部份氣體被循環作為流化床乾燥機的進送氣體, 循環氣體量基於流化庆#座 、、_ 制而曰」 出口測得的煤炭溫度而被控 仆戍m ^出的乳體里亦同時被控制。在流 用乾_的出σ的煤炭溫度,可藉上述動作而穩定。當 =燥機7的進送煤炭的溼度含量上升,假如進送氣體溫 f持不變’則乾燥能力變成不夠,乾燥機出口的煤炭溫 X因此會下降。因此,假如谓測到出口的煤炭溫度下降, S · 進运氣體的乾燥能力可藉由減少再使用循環氣體體積以及 ,加從煉焦爐取出的氣體體積3而增力"相反地,若進送煤 厌的屋度含置下降,進送氣體溫度保持不變,則乾燥能力 變成過度,於是,乾燥機出口的煤炭上升。因此,進送氣 體的煤炭乾燥能力可藉由採取與煤炭渥度含量增加情況所 使用的相反動作而減少。藉由上述控制動作,即使當進送 到乾燥機7的煤炭的澄度含量變動,亦可能維持乾燥機出口 釋放的煤炭的溫度和溼度總是一定。上述再使用循環氣體 體積和由煉焦爐煙道取出的氣體體積的控制,亦可根據用 於流化床的進送氣體的溫度和流化床出口處的氣體溫度的 差異而做出。因為往流化床的氣體供應率為維持流化狀況 經濟部智慧財產局員工消費合作社印製 一般保持一定,所以進送氣體溫度和乾燥機出口處的氣體 溫度,正比於單位時間從氣體傳送到煤炭的熱量而改變。 因此,藉由根據上述熱量來控制再使用循環氣體體積和煉 焦爐煙道氣體取出體積,則可能保持從乾燥機出口釋出的 煤炭的溫度和溼度保持一定。 流化床乾燥機7在乾燥煤炭時可將煤炭分類•從流化床 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) 24 A7 五、發明說明( 人入的進送氣體形成一往上氣流,在流化床13的煤炭 I的小顆粒尺寸微細煤炭,被往上氣流連同廢氣被帶到乾 燥機外面。稭由特別設定往上氣流的流動速度,可能控制 被,氣帶走的微細煤炭顆粒尺寸範圍。含在廢氣中的微細 煤炭被灰塵捕集器16捕捉,被分類為微細煤炭。 使被机化床釋出的氣體帶走的微細煤炭以固氣分離法 分離、,並使已分離的微細煤炭和含有重碳氫化合物(從煤炭 或石油取出)液體的添加物混合和攪拌 _掉過的微細煤炭,連同上述被流化床乾燥機』= 厌,一起作為煤炭的原料。上述添加物的添加量,較佳地 在重量上為3-25部份比上⑽份的微細煤炭。其理由在於, 假如添加低於上述比例中的3時,均勻混合乾燥微細煤炭是 困難的,但假如超過25,則添加物中的焦油(tar)含量可能形 成局邛的液體i几,或者在傳送到煉焦爐期間煤炭可能黏在 傳送系統的組件上。 "因為藉由上述程序,煤炭的微細顆粒從流化床乾燥機7 ^出的煤炭中去除,所以在傳送到煉焦爐期間灰塵的發散 是很小的。此外,因為再回收的微細煤炭被混合機混合和 形成,其可用作為煉焦爐原料,而不會造成灰塵發散。 ”/如上所述,微細煤炭可在混合機混合和攪拌之後被加 壓形成。以此方式,微細煤炭可被改變成任何尺寸和形狀 的成形煤炭,且可避免粉碎己形成為像顆粒的煤炭致使灰 塵產生。而且,當成形煤炭被載入煉焦爐中時,载入的煤 炭的容積密度(bulk density)增加,焦炭品質可提高。 本紙張尺度適用尹國國家標準(CNS)A4規格(210 X 297公爱)A7 V. Description of the Invention (Release-Part of the gas is circulated as the feed gas of the fluidized bed dryer. The amount of circulating gas is based on the coal temperature measured at the outlet of the fluidized bed. The milk output from the controller 戍 m ^ is also controlled at the same time. The temperature of the coal that is used to output σ can be stabilized by the above action. When the moisture content of the feed coal of the dryer 7 increases, if the feed gas If the body temperature f stays the same, the drying capacity becomes insufficient, and the coal temperature X at the outlet of the dryer will decrease. Therefore, if the temperature of the coal at the outlet is measured to decrease, the drying capacity of the incoming gas can be reduced by reducing the reuse cycle. The gas volume and the gas volume 3 taken out of the coke oven to increase the strength " Conversely, if the feed content of the feed coal is reduced and the feed gas temperature remains unchanged, the drying capacity becomes excessive, so the drying The coal at the exit of the machine rises. Therefore, the coal drying capacity of the feed gas can be reduced by taking the opposite action to that used in the case of increasing the coal's wort content. With the above control action, even when the feed is sent to the dryer 7 The change in the clarity content of coal may also maintain the constant temperature and humidity of the coal released from the dryer outlet. The above-mentioned control of the volume of recycled gas and the volume of gas taken out of the coke oven flue can also be used according to The difference between the temperature of the feed gas in the fluidized bed and the gas temperature at the outlet of the fluidized bed. Because the gas supply rate to the fluidized bed is maintained to maintain the fluidized state, the printing is generally maintained by the employee consumer cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs Certainly, so the feed gas temperature and the gas temperature at the outlet of the dryer change in proportion to the amount of heat transferred from the gas to the coal per unit time. Therefore, by controlling the volume of recirculated gas and coke oven flue gas based on the above heat Take out the volume, it is possible to keep the temperature and humidity of the coal released from the dryer outlet. The fluidized bed dryer 7 can classify the coal when drying the coal. • The paper size of the fluidized bed is subject to Chinese National Standards (CNS). A4 specification (210 X 297 mm) 24 A7 V. Description of the invention Coal I's small particle size and fine coal are taken to the outside of the dryer by the upward airflow along with the exhaust gas. The straw can be controlled by the specially set upward airflow speed to control the fine coal particle size range taken away by the air. Contained in the exhaust gas The fine coal is captured by the dust trap 16 and classified as fine coal. The fine coal taken away by the gas released from the mechanical bed is separated by a solid-gas separation method, and the separated fine coal and heavy coal are separated. Hydrocarbon (taken from coal or petroleum) liquid additives are mixed and stirred_ the fine coal that has been dropped together with the fluidized bed dryer mentioned above is used as the raw material for coal. The added amount of the above additives is better The ground is 3-25 parts by weight of fine coal. The reason is that if less than 3 of the above ratio is added, it is difficult to uniformly dry the fine coal, but if it exceeds 25, the additive is added. The tar content may form a localized liquid, or coal may stick to components of the transfer system during transfer to the coke oven. " Because the fine particles of coal are removed from the coal discharged from the fluidized bed dryer 7 through the above procedure, the emission of dust during the transfer to the coke oven is very small. In addition, because the recovered fine coal is mixed and formed by a mixer, it can be used as a raw material for coke ovens without causing dust emission. "/ As mentioned above, the fine coal can be formed under pressure after being mixed and stirred by the mixer. In this way, the fine coal can be changed into shaped coals of any size and shape, and the coal that has been formed into particles like particles can be prevented from being crushed As a result, dust is generated. In addition, when the formed coal is loaded into the coke oven, the bulk density of the loaded coal is increased, and the quality of coke can be improved. This paper standard is applicable to Yin State National Standard (CNS) A4 specification (210 X 297 public love)
4 ^----l·—tr---------φ «. (請先閱讀背面之注意事項再填寫本頁) 491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明( 實例 本發明的某些實施例根據第丨圖描述於下。 本發明被應用於一個使用流化床乾燥機的煤炭乾燥操 作,以便使焦炭生產中煤炭的溼度含量從丨減少到。 討論中的煉焦爐總共含有100個煉焦室,亦即,兩個半部煉 焦爐,各有五十個煉焦室。流化床乾燥機使送入煉焦爐的 煤炭乾燥,且其(溼)煤炭處理能力為1〇〇t/h。 上述煉焦爐送出的煙道廢氣被用作為流化床乾燥機的 進送氣體。煉焦爐廢氣的溫度為22(rc且煙道廢氣體積每個 半部煉焦爐為82,000Nm3/h。 從上述一個煉焦爐的煙道廢氣體體積中,從煙道2取出 65,000Nm3/h往氣體管路8,並進送到流化床乾燥機7。在正 常操作期間,第二號控制閥19被設定在打開6〇%,維持穩定 的控制範圍,在相同時間,第三號控制閥22被設定在打開 5%,以便從管路17經過氣體循環管路21循_\〇〇〇1^113化的 較乾燥廢氣。由65,000Nm3/h的煉焦爐煙道廢氣和7,〇〇〇 Nm3/h的循環氣體構成的全部72,〇〇〇Nm3/h中取出的68,〇〇〇 NmVh的氣體體積,被使用作為用於流化床乾燥機7的進送 氣體。其餘的4,000Nm3/h在乾燥機7的乾舷高度:部段和灰塵 捕集器16之間的一點處,與來自流化床乾燥機的廢£32混 合。而且,直徑約l〇mm的蒸汽管被安排成以蜿蜒方式圍繞 在袋式過濾器下方的漏斗部份,並覆蓋有絕熱材料作為流 化床乾燥機之廢氣32的絕熱。 由於在上述情況下乾燥煤炭,乾燥機出口處的煤炭溫 ^-----r---^---------Aw I (請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 A7 -----JB7_______ 五、發明說明(1 度約為52。(:,被控制在50t:至55t:的目標溫度範圍内,達 成乾燥機出口 6%的目標煤炭溼度,溼度在乾燥機中被降低 約4%。 在這些貫例中’當煉焦爐在1 〇 〇 t/h的輸出程度下操作 時煉焦爐的燃燒變換的頻率設定在3Omi η,雖然當輸出量 高時變換頻率可短到15min。 (實例1) 在燃燒變換期間,用於流化床乾燥機的進送氣體的控 制根據第4和5圖說明如下。 在燃燒變換開始之前的一分鐘,煉焦爐發出一個警告 k號。在燃燒變換開始,如第4圖所示,首先開始系統A的 燃燒側的煙道氣體關閉操作,以便在15秒内達到完全關閉。 然後’燃燒用空氣的關閉操作開始,以在15秒内達到完全 關閉。在完全關閉的4秒後,系統b變成燃燒側,燃燒側的 空氣開始被引入以在15秒内達到正常程度,然後煙道氣體 開始被引入以在15秒内達到正常氣體流。煉焦爐的煙道廢 氣流隨著時間經過的改變,被顯示於第4圖的最下一排和第 5圖的最上一排。 流化床乾燥機的控制器23至28,一旦收到上述燃燒變 換的警告信號,即開始控制閥。控制計晝根據第5圖描述於 下。首先’第一號控制閥1〇從打開55%逐漸關閉到最後達到 打開5%。同時地,第三號控制閥22從打開5%被打開到打開 40%,然後第二號控制閥19從打開60%關閉到打開40%。 由於上述閥的操作,來自流化床乾燥機廢氣32的 本紙張尺度適用中國國家標準(CNS)A4規格(210x297公釐) -29 - IP I---------^---- (請先閱讀背面之注意事項再填寫本頁) Φ 經濟部智慧財產局員工消費合作社印製 491888 A7 --—________B7___ 五、發明說明(1 60, OOONm /h透過氣體循環管路21而循環。同時,流至流化 床乾燥機的進送氣體34的流動,被設定在%,咖細3/h,比 〇〇〇Nm3/h, 5。6, 000 ’/h被用料進送氣體34,4肩嶋%與流化床乾 燥機廢氣32纟乾燥機的乾舷高度部段和灰塵捕集器a之 間的-點處混合。除上述以外,在使用猶環氣體時,往乾 燥機的煤炭進送率從正常操作的膽/h減少15%至85t/h。閥 #作的上述順序和煤炭進送率的調整被執行,遵循根據燃 燒變換的警告信號的一規定模式。當燃燒變換完成時,闕 操作與從燃燒變換開始時的情況相反,然後在完成這些闕 操作之後,煤炭進送率回復到正常位置。 來自大氣的空氣被用來脈衝式噴注,俾除去袋式過濾 器的灰塵,該操作通常需要7 NmVh的空氣。在練焦爐的上 述燃燒變換期間,空氣流動增加到35 Nm3/h。 即使當來自煉焦爐的煙道廢氣的供應,在煉焦爐的變 換期間中斷,藉由再循環氣體,可讀保用於流化床乾燥機7 的進迗軋體及維持流化床的流化。而且,藉由在燃燒變換 期間減少往流化床的煤炭進送率,煤炭的不充份乾燥被最 小化。 一從〃,L化床乾燥機7釋出的氣體溫度,被降到約5〇°c ,且 氣體含有顆粒尺寸小於〇.lmm的約5t/h的微細煤炭。雖然廢 氣的渥度含量為25%,但在袋式過濾器中不會發生過滤布的 凝矛堵S ’所以,尺寸為好幾個微米的微細煤炭將被捕 獲,而且由於流化床乾燥機的一部份進送氣體,與較乾的 本紙張尺錢+關家標準(CNS)A4規格(210 X 297公羞) ^------------------! (請先閱讀背面之注意事項再填寫本頁)4 ^ ---- l · —tr --------- φ «. (Please read the notes on the back before filling out this page) 491888 Printed by A7, Consumer Cooperatives, Intellectual Property Bureau, Ministry of Economic Affairs, V. Invention Description (Examples) Some embodiments of the present invention are described below according to the figure. The present invention is applied to a coal drying operation using a fluidized bed dryer in order to reduce the moisture content of coal in coke production from to. Discussion The coke oven in the middle contains 100 coking chambers, that is, two and a half coke ovens, each with 50 coking chambers. The fluidized bed dryer dries the coal sent to the coke oven, and its (wet) coal treatment The capacity is 100t / h. The flue gas from the coke oven is used as the feed gas for the fluidized bed dryer. The temperature of the coke oven gas is 22 (rc and the flue gas volume is half of the coke oven). It is 82,000Nm3 / h. From the flue gas volume of the coke oven mentioned above, take out 65,000Nm3 / h from the flue 2 to the gas line 8 and enter the fluidized bed dryer 7. During normal operation, the The second control valve 19 is set to open 60% to maintain a stable control range. At the same time, the third control valve 22 is set to open 5%, in order to pass from the pipeline 17 through the gas circulation pipeline 21 to the drier exhaust gas. The 65,000Nm3 / h The coke oven flue gas and the 7,000 Nm3 / h circulating gas totaling a gas volume of 68,000 NmVh taken out of 72,000 Nm3 / h were used as fluidized bed drying. Feed gas to machine 7. The remaining 4,000 Nm3 / h is mixed with the waste from the fluid bed dryer at a point between the freeboard height of the dryer 7: section and the dust trap 16 and the waste is £ 32. The steam pipe with a diameter of about 10mm is arranged to meander around the funnel part below the bag filter, and is covered with heat insulation material as the heat insulation of the exhaust gas 32 of the fluidized bed dryer. Because in the above case, Dry coal, coal temperature at the exit of the dryer ^ ----- r --- ^ --------- Aw I (Please read the notes on the back before filling this page) Intellectual Property Bureau of the Ministry of Economic Affairs Printed by employee consumer cooperative A7 ----- JB7_______ V. Invention description (1 degree is about 52. (:, is controlled within the target temperature range of 50t: to 55t: In the dryer, the target coal humidity of 6% of the dryer outlet was reached, and the humidity was reduced by about 4% in the dryer. In these examples, 'combustion of the coke oven when the coke oven is operated at an output of 100 t / h The frequency of the shift is set at 30 mi η, although the shift frequency can be as short as 15 minutes when the output is high. (Example 1) During the combustion shift, the control of the feed gas for the fluidized bed dryer is explained according to Figures 4 and 5. As follows: One minute before the start of the combustion shift, the coke oven issued a warning number k. At the start of the combustion shift, as shown in Fig. 4, the combustion gas-side gas shut-off operation of the combustion side of the system A is first started so as to reach a full shutdown within 15 seconds. Then the closing operation of the 'combustion air' is started to reach a complete shutdown within 15 seconds. After 4 seconds of complete shutdown, the system b becomes the combustion side, and the air on the combustion side begins to be introduced to reach a normal level within 15 seconds, and then the flue gas starts to be introduced to reach a normal gas flow within 15 seconds. The changes in the flue gas flow of the coke oven over time are shown in the bottom row of Figure 4 and the top row of Figure 5. The controllers 23 to 28 of the fluidized bed dryer start to control the valve upon receiving the warning signal of the above-mentioned combustion change. The control day is described below based on Figure 5. First, the No. 1 control valve 10 is gradually closed from opening 55% to finally opening 5%. At the same time, the third control valve 22 is opened from 5% to 40%, and the second control valve 19 is closed from 60% to 40%. Due to the operation of the above valve, the paper size from the fluidized bed dryer exhaust gas 32 is applicable to the Chinese National Standard (CNS) A4 specification (210x297 mm) -29-IP I --------- ^ --- -(Please read the precautions on the back before filling this page) Φ Printed by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 491888 A7 ---________ B7___ V. Description of the invention (1 60, OOONm / h circulates through the gas circulation pipeline 21 At the same time, the flow of the feed gas 34 to the fluidized bed dryer is set at%, the fineness is 3 / h, the ratio is 0.00Nm3 / h, and 5.6 '/ h is fed by the material. The gas 34.4% of the shoulder is mixed with the-point between the freeboard height section of the fluidized bed dryer exhaust gas 32 纟 dryer and the dust trap a. In addition to the above, when using a still gas, go to The coal feed rate of the dryer is reduced by 15% from normal operation to 85 t / h. The above sequence made by the valve and the adjustment of the coal feed rate are performed, following a prescribed pattern based on a warning signal for combustion conversion. When the combustion shift is completed, the plutonium operation is the reverse of the situation from the beginning of the combustion shift, and then after completing these plutonium operations, The coal feed rate returned to the normal position. The air from the atmosphere is used for pulse injection to remove dust from the bag filter. This operation usually requires 7 NmVh of air. During the above combustion conversion of the coke oven, The air flow is increased to 35 Nm3 / h. Even when the supply of flue gas from the coke oven is interrupted during the changeover of the coke oven, the recirculation of the gas is readable and guaranteed for the advancement of the fluidized bed dryer 7 And maintain the fluidization of the fluidized bed. Moreover, by reducing the coal feed rate to the fluidized bed during the combustion shift, inadequate drying of the coal is minimized. Once released, the L-bed dryer 7 releases The temperature of the exhaust gas is reduced to about 50 ° C, and the gas contains fine coal with a particle size of less than 0.1mm at about 5t / h. Although the exhaust gas content is 25%, it is not in a bag filter. The clogging spear of the filter cloth will occur S ', so fine coal with a size of several micrometers will be captured, and because part of the fluid in the fluidized bed dryer is fed with gas, it will be compared with the dry paper size + Guan Jia Standard (CNS) A4 specification (210 X 297 male shame) ^ ----- -------------! (Please read the notes on the back before filling this page)
·裝 ··---訂---------! C請先閱讀背面之注意事項再填寫本頁) 經濟部智慧財產局員工消費合作社印製 491888 A7 --------E__ 五、發明說明(1 " "〜'^-- 廢氣在乾艇高度部段處混合,以及在袋式_器下方的漏 斗部份被蒸汽加熱並被覆蓋有絕熱材料,所以廢氣可在厂 進一步處理的情況下釋放到大氣。 不 被袋式過濾器收集的百分之八十的微細灰塵為顆粒尺 寸小於0.1mm的微細煤炭。焦油被加入作為添加劑。焦油的 溫度被維持在約8(TC ,以降低其黏性並保持其為液態:而 且在重里上,10-15份的焦炭被添加到1〇〇份的微細煤炭中。 然後,透過攪拌上述混合物而得到像顆粒的微細煤炭,去 連同從流化床乾燥機7排出的煤炭一起載入煉焦爐^像二 粒的微細煤炭表現出較小的灰塵發散。 (實例2) 遵循第6圖所示的控制模式,控制操作被執行,以在煉 焦爐的燃燒變換期間調節循環氣體的流動,維持用於流化 床乾燥機的進送氣體34的流動一定並維持煤炭進送率在 100t/h。其他狀況保持與上述實例1相同。 由於用於乾燥機的進送氣體34的流動被保持“定,,# 以當保持煤炭進送率一定時,流化床的流化狀況被維持。 因為煤炭進送率在使用循環氣體期間被保持一定,所以由 乾燥機釋出的煤炭的溼度有某種程度的上升。然而,由,於. 循環氣體使用期間短到少於2min,所以有較高溼度含量的 煤炭的生產量被控制到大約3t,煤炭溼度的增加小到從⑽ 小到正常操作下的7%。 (實例3) 遵循第7圖所示的控制模式,在煉焦爐的燃燒變換期· Equipment ·· --- Order ---------! C Please read the notes on the back before filling out this page) Printed by the Employees' Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs 491888 A7 ------- -E__ 5. Description of the invention (1 " " ~ '^-The exhaust gas is mixed at the height section of the dry boat, and the funnel part below the bag type device is heated by steam and covered with thermal insulation material, so the exhaust gas It can be released to the atmosphere under further processing in the plant. Eighty percent of the fine dust that is not collected by the bag filter is fine coal with a particle size of less than 0.1mm. Tar is added as an additive. The temperature of the tar is maintained at About 8 ° C to reduce its viscosity and keep it liquid: and 10-15 parts of coke is added to 100 parts of fine coal. Then, by stirring the mixture, a granular-like The fine coal is loaded into the coking oven together with the coal discharged from the fluidized bed dryer 7. The fine coal like two grains shows less dust emission. (Example 2) Follow the control mode shown in FIG. 6 to control Operations are performed to adjust the combustion shift during the coke oven. The flow of circulating gas keeps the flow of the feed gas 34 for the fluidized bed dryer constant and keeps the coal feed rate at 100t / h. Other conditions remain the same as in Example 1. Because of the feed gas for the dryer The flow of 34 is maintained "定 , #" to keep the fluidized state of the fluidized bed when the coal feed rate is kept constant. Because the coal feed rate is kept constant during the use of the circulating gas, it is released by the dryer The humidity of coal has risen to some extent. However, since the period of use of the circulating gas is as short as less than 2min, the production of coal with higher humidity content is controlled to about 3t, and the increase in coal humidity is as small as From ⑽ small to 7% under normal operation. (Example 3) Follow the control mode shown in Figure 7 during the combustion conversion period of the coke oven
本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公楚 1This paper size applies to China National Standard (CNS) A4 (210 X 297 cm)
經濟部智慧財產局員工消費合作社印製 間,循%氣體33的流動被調整到68,000Nm3/h,且被加熱到28〇 C的燃燒廢氣(被熱氣產生器分離)在流率為10,〇〇〇NmVh下 被使^作為_部份進送氣體,只有在循環氣體被使用時。 用於流化床乾燥機的進送氣體34的總流動被保持一定,煤 炭進送率亦保持一定為i〇〇t/h。其他狀況保持相同於實例i 中的狀況。 因為熱氣產生器送來的氣體被額外地使用,所以可破 保進送氣體有充份的煤炭乾燥能力,因而當維持與正常操 作期間相同的煤炭進送率時,釋放煤炭的溼度被保持相同 於正常操作的溼度。 (實例4) 用於乾燥機的進送氣體,藉使用從兩個具有不同燃燒 變換定時的爐子(東爐和西爐)的煉焦爐的煙道廢氣而確 保在正吊操作期間使用來自兩個爐子的廢氣,並在另一 個爐子的燃燒變換期間增加從一爐子送出的廢氣的供應體 積。控制模式顯示於第8圖中。 在正常操作期間,柬爐或西爐任一者的煙道廢氣體積 為100,000 _3/11。來自每個煉焦爐的廢氣的40,000 _3/}1 的體積’在正常操作期間被使用作為乾燥機的進送氣體。 在東爐的燃燒變換時間(12:3〇),來自西爐的氣體供應率增 加到80, 000 Nm3/h,以確保用於乾燥機的進送氣體。相反地, 在西爐的燃燒變換的時間(丨2:45),來自東爐的氣體供應率 增加到80, 000 NmVh,以相同方式確保用於乾燥機的進送氣 體0 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) ·义_ ί 裝-----;----訂---------1 (請先閱讀背面之注咅?事項再填寫本頁) 30491888 經濟部智慧財產局員工消費合作社印製 A7 五、發明說明() 藉此’由於來自煉焦爐之煙道廢氣(具有恆定維持的乾 燥能力)被使用作為較乾燥的進送氣體,所以穩定的煤炭乾 燥操作被確保。 利用本發明,藉由當來自煉焦爐的煙道廢氣供應因諸 如煉焦爐之燃燒變換的原因中斷或減少時,再使用來自流 化床乾燥機的廢氣作為用於流化床乾燥機的進送氣體,則 可能總是確保用於流化床乾燥機的進送氣體如所需一樣 多。 藉由使氣體循環通路絕緣以及將使用蒸汽或電熱器等 的加熱裝置組設到上述絕熱部份的一部份或全部,再循環 軋體的煤炭乾燥能力可被保持很高。 煤炭乾燥能力可藉由在氣體再循環期間吹入氣體來清 潔灰塵捕集器而被提高,因為用來清潔灰塵捕集器的氣體 被混入再循環氣體中。 藉由將煉焦爐送出的煙道廢氣供應到流化床乾燥機排 出的廢氣中,廢氣通路中溼度的凝結被防止發生。 藉由混合具有不同燃燒定時之煉焦爐送來的煙道廢 氣,並使用該混合氣體送到流化床乾燥機,則用於流化床 乾燥機的進送氣體的中斷可被避免,因而流化床乾燥機的 持續穩定操作是可能的。 藉由加水到流化床的煤炭中,並在流化床乾燥機的操 作初期逐漸增加煤炭進送率,從乾燥機排出的煤炭的渔度 含量被保持一定,防止過度乾燥發生,即使是在開始期間。 藉由使添加劑添加到流化床送出之廢氣所攜帶的微細 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公髮 — — — — — — — —---41^ 裝-----^----訂--------I (請先閱讀背面之注意事項再填寫本頁) 491888The printing room of the Consumer Cooperative of the Intellectual Property Bureau of the Ministry of Economic Affairs was adjusted to 68,000 Nm3 / h by the flow of% 33 gas, and the combustion exhaust gas (separated by the hot gas generator) heated to 28 ° C was flowed at a flow rate of 10,0. 〇〇NmVh is used as _ part of the feed gas, only when the circulating gas is used. The total flow of the feed gas 34 for the fluidized bed dryer is kept constant, and the coal feed rate is kept constant at 100 t / h. The other conditions remain the same as in example i. Because the gas sent from the hot gas generator is used extra, the breakable feed gas has sufficient coal drying capacity, so the humidity of the released coal is kept the same when the same coal feed rate is maintained during normal operation Humidity for normal operation. (Example 4) The feed gas for the dryer was used to ensure the use of the flue gas from two coke ovens from two furnaces (East furnace and West furnace) with different combustion shift timing during the uplift operation. Exhaust gas from the furnace and increase the supply volume of exhaust gas sent from one furnace during the combustion shift of another furnace. The control mode is shown in Figure 8. During normal operation, the flue gas volume of either the Cambodian furnace or the western furnace is 100,000 _3 / 11. A volume of 40,000 _3 /} 1 of exhaust gas from each coke oven is used as the feed gas to the dryer during normal operation. At the combustion shift time of the east furnace (12:30), the gas supply rate from the west furnace was increased to 80,000 Nm3 / h to ensure the feed gas for the dryer. Conversely, at the time of the combustion change of the West furnace (丨 2:45), the gas supply rate from the East furnace was increased to 80,000 NmVh, and the feed gas for the dryer was ensured in the same way. National Standard (CNS) A4 Specification (210 X 297 mm) · Meaning _ Pack -----; ---- Order --------- 1 (Please read the note on the back first? Matters (Fill in this page again) 30491888 Printed A7 by the Consumer Cooperatives of the Intellectual Property Bureau of the Ministry of Economic Affairs 5. Description of the Invention () By this way, 'due to the flue gas from the coke oven (with constant maintenance of drying capacity) is used as a relatively dry feed Gas, so stable coal drying operation is ensured. With the present invention, by using the exhaust gas from the fluidized bed dryer as the feed for the fluidized bed dryer when the flue gas supply from the coke oven is interrupted or reduced due to reasons such as the combustion shift of the coke oven, Gas, it is always possible to ensure that as much feed gas as is required for the fluid bed dryer. By insulating the gas circulation path and arranging heating devices such as steam or electric heaters to part or all of the above-mentioned thermal insulation section, the coal drying ability of the recirculating rolled body can be kept high. Coal drying capacity can be improved by blowing in gas during the gas recirculation to clean the dust trap, because the gas used to clean the dust trap is mixed into the recirculated gas. By supplying the flue gas from the coke oven to the exhaust gas from the fluidized bed dryer, condensation of humidity in the exhaust gas path is prevented from occurring. By mixing the flue gas from the coke oven with different combustion timing and using the mixed gas to send to the fluidized bed dryer, the interruption of the feed gas for the fluidized bed dryer can be avoided, so the flow Continuous stable operation of a fluidized bed dryer is possible. By adding water to the fluidized bed coal and gradually increasing the coal feed rate at the beginning of the operation of the fluidized bed dryer, the fishery content of the coal discharged from the dryer is kept constant to prevent over-drying from occurring, even in During the start. By adding additives to the fine paper size carried by the exhaust gas sent out from the fluidized bed, the Chinese national standard (CNS) A4 specification (210 X 297 public hair is issued — — — — — — — — — --- 41 ^ pack- --- ^ ---- Order -------- I (Please read the notes on the back before filling this page) 491888
31 五、發明說明( 煤厌中,攪拌然後使微細煤炭和添加劑加壓成形,則微細 煤炭可變成煉焦爐原料,與流化床乾燥機乾燥的煤炭一起 被使用。 經濟部智慧財產局員工消費合作社印製 1.. .煉焦爐 4.. .煙囪 6.. .控制閥 8.. .氣體管路 10…控制閥 12···送風機 14.. .分散板 16…灰塵捕集器 18.. .送風機 20…煙囪 22···控制閥 24…煤炭進送率控制器 26-28···控制器 3 0…煤厌溫度計 33···循環氣體 1件i票號釾照裊 2…煙道 5···廢氣流量計 7.··流化床乾燥機 9…流量計 11···熱氣產生器 13···流化床 15…煤炭進送機 17···廢氣管路 19···控制閥 21··.氣體循環管路 23…氣體循環系統控制器 25…煤炭釋放率控制器 29…加熱裝置 32…廢氣 34···進送氣體 本紙張尺度適用中國國家標準(CNS)A4規格(210 X 297公釐) -从: -----------裝-----r---訂---------I (請先閱讀背面之注意事項再填寫本頁)31 V. Description of the invention (In coal anorexia, stirring and then pressing fine coal and additives to form pressure, the fine coal can be converted into coke oven raw materials and used together with coal dried by a fluidized bed dryer. Consumption by employees of the Intellectual Property Bureau of the Ministry of Economic Affairs Cooperative printed 1. Coking oven 4. Chimney 6. Control valve 8. Gas line 10 ... Control valve 12 ... Fan 14. Dispersion plate 16 ... Dust trap 18. .. blower 20 ... chimney 22 ... control valve 24 ... coal feed rate controller 26-28 ... controller 3 0 ... coal anaerobic thermometer 33 ... circulating gas 1 i ticket number 釾 照 袅 2 ... Flue 5 ... Waste gas flow meter 7. Fluid bed dryer 9 ... Flow meter 11 ... Hot gas generator 13 ... Fluid bed 15 ... Coal feeder 17 ... Exhaust line 19 ··· Control valve 21 ... Gas circulation line 23 ... Gas circulation system controller 25 ... Coal release rate controller 29 ... Heating device 32 ... Exhaust gas 34 ... Feed gas This paper size applies to Chinese national standards (CNS ) A4 size (210 X 297 mm) -From: ----------- install ----- r --- order --------- I (Please read the back first Notice (Please fill this page again)
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JP23104599A JP3825587B2 (en) | 1999-08-18 | 1999-08-18 | Coal drying method and drying apparatus |
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KR (1) | KR100360223B1 (en) |
CN (1) | CN1120872C (en) |
AU (1) | AU746076B2 (en) |
RO (1) | RO121939B1 (en) |
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- 2000-08-17 RO ROA200000834A patent/RO121939B1/en unknown
- 2000-08-17 TW TW089116655A patent/TW491888B/en not_active IP Right Cessation
- 2000-08-18 CN CN00124159A patent/CN1120872C/en not_active Expired - Lifetime
- 2000-08-18 AU AU53506/00A patent/AU746076B2/en not_active Expired
Also Published As
Publication number | Publication date |
---|---|
RO121939B1 (en) | 2008-08-29 |
ZA200004212B (en) | 2001-02-14 |
CN1285388A (en) | 2001-02-28 |
AU5350600A (en) | 2001-02-22 |
KR20010067082A (en) | 2001-07-12 |
JP2001055582A (en) | 2001-02-27 |
AU746076B2 (en) | 2002-04-11 |
JP3825587B2 (en) | 2006-09-27 |
KR100360223B1 (en) | 2002-11-11 |
CN1120872C (en) | 2003-09-10 |
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