CN102175032A - Technological process for delivering dry coal slurry in electric plant - Google Patents
Technological process for delivering dry coal slurry in electric plant Download PDFInfo
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- CN102175032A CN102175032A CN 201010598039 CN201010598039A CN102175032A CN 102175032 A CN102175032 A CN 102175032A CN 201010598039 CN201010598039 CN 201010598039 CN 201010598039 A CN201010598039 A CN 201010598039A CN 102175032 A CN102175032 A CN 102175032A
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Abstract
The invention relates to technological process for delivering a dry coal slurry in an electric plant. The process is characterized by designing a line for delivering the dry coal slurry individually; delivering the dry coal slurry directly to a coal feeder layer, namely arranging a dry coal slurry shed at the side of a coal powder boiler; arranging a discharge hopper in the coal slurry shed; laying a belt feeding machine below the discharging hopper; arranging a hopper wall vibrator at the side wall of the discharging hopper; delivering the dry coal slurry on a belt delivering machine at the lower part by the belt feeding machine; and delivering the dry coal slurry to the coal feeder layer through the belt delivering machine. The dry coal slurry is delivered by the coal power furnace through a coal feeding line, thus the dry coal slurry and middlings are delivered separately, and the phenomena that during the operation process of a coal powder furnace, coal-bloating of an original coal bunker, coal adherence of the bunker wall and severe coal plugging of a coal drop pipe and the like caused by the mixing delivery of the middlings and the dry coal slurry are avoided; and the dry coal slurry is delivered in a coal supply line for a specific purpose which is simple, convenient, rapid, time-saving and electricity-saving, the safety hazard of coal adherence and coal plugging of the original coal bunker and the coal drop pipe is eliminated effectively, a simple, convenient and effective scheme for effective coal combustion is provided for a large coal powder furnace, and the coal lacking problem in the electric plant is solved.
Description
Technical field
The present invention relates to thermal power plant is used for carrying dry coal mud under the situation with the coal anxiety technology.
Background technology
Present many large thermal power plants are owing to lacking the embarrassment that coal faces " not having rice cooks ", and this situation has become reality in certain areas, and power cuts to limit consumption is carried out in some areas, and the stock of some large-size thermal power plants can not keep 5 days production with coal.Since in June, 2010, the Henan Province that is not subjected to the hardship of power cuts to limit consumption for many years, because network load hits new peak repeatly, power plant deposits coal and descends, and many power plant deposit coal and are lower than warning line, and unit faces shuts down danger.Because the coal supply anxiety, the coal price cost is high, and power plant's cost of electricity-generating increases substantially.In order to reduce cost of electricity-generating, the power plant makes full use of existence conditions, use the dewatered coal slime in colliery, it is to rely on original coal handling system to go up coal that but dry coal mud is carried, exist dry coal mud and wash in coal the mixings course of conveying dry coal mud absorb the moisture of washing in the middle coal coal, viscosity increases, in run coal bin, form the coal seam frame, chute blockage is more serious in the production, some power plants have designed some block clearing devices, but effect is all not obvious, and the cleaning chute blockage is time-consuming, has had a strong impact on production.
Summary of the invention
The purpose of this invention is to provide a kind of thermal power plant dry coal mud delivery technology, this technology can be avoided dry coal mud and wash the conveying that mixes of middle coal, moisture during dry coal mud absorbs and washes in the coal coal, cause coal slime viscosity to increase, make run coal bin and coal spout glue the phenomenon of coal, chute blockage, can increase work efficiency and economic benefit.
The technical scheme that the present invention takes is: design a circuit of carrying dry coal mud in addition, dry coal mud is delivered directly to coal feeder floor, coal mixing in course of conveying in avoiding dry coal mud and washing; Concrete process is: at the pulverized-coal fired boiler side one dry coal mud canopy is set, the size of coal slime canopy is decided according to local coal slime resource and boiler coal slime consumption, set hopper in the coal slime canopy, use forklift that dry coal mud is pushed in the hopper, arrange the frequency conversion belt feeder below the hopper, the hopper sidewall is established hopper wall vibrator, the frequency conversion belt feeder is transported to dry coal mud on the belt conveyor of bottom, the layout angle of belt conveyor is 16 °-18 °, chute below the belt conveyor is connected on the feeder coal spout mouth of pipe of former coal supply system, and dry coal mud enters coal pulverizer through the feeder coal spout.For preventing that cold air from entering the thermal efficiency that grinding machine influences boiler, have sideboard on the chute, prevent that cold air from entering grinding machine; Belt conveyor top is provided with rain cover, prevents that dry coal mud from making moist.
The mixed proportion of coal and dry coal mud is according to the caloric value of washing middle coal and dry coal mud and fixed in washing, according to the different heat amount of coal in washing and dry coal mud, the input quantity of coal and dry coal mud during the technical staff of power plant can wash by the frequency conversion belt feeder adjustment on the coal handling system separately.
Good effect of the present invention is: coal-powder boiler is carried dry coal mud by this to seam, coal separates conveying in making dry coal mud and washing, avoid in the coal-powder boiler running, coal mixes conveying and causes run coal bin canopy coal, bulkhead to glue phenomenons such as coal, coal spout chute blockage be serious in washing with dry coal mud; Dry coal mud is carried by ad hoc coal supply circuit, has removed the intermediate link that begins to carry from former coal yard from, as by rotary screen and run coal bin etc., gets along well and washes middle coal mixing, makes dry coal mud remain drying regime; Dry coal mud is carried in ad hoc coal supply circuit, easy, quick, in the time of can saving, economize on electricity, and effectively eliminated the potential safety hazard of the sticking coal of run coal bin and coal spout, chute blockage, for boiler safety stable operation provides guarantee, and, solved power plant and lacked the coal problem for large-scale coal-powder boiler provides the easy effective scheme of burning coal slime.
Description of drawings
Accompanying drawing is a process flow diagram of the present invention.
The specific embodiment
Process of the present invention is transported to frequency conversion belt feeder 5 with the dry coal mud in the dry coal mud canopy 7 through hopper 6, on the coal spout of the feeder 2 that is transported to former coal supply system 8 through belt conveyor 4 as shown in drawings.Concrete process is: the dry coal mud canopy 7 of building a steel construction at the pulverized-coal fired boiler side, the size of dry coal mud canopy 7 is decided according to local coal slime resource and boiler coal slime consumption, in the dry coal mud canopy 7 hopper 6 is installed, use forklift that dry coal mud is pushed in the hopper 6, be provided with frequency conversion belt feeder 5 below the hopper 6, hopper 6 sidewalls are provided with hopper wall vibrator, to guarantee smooth blanking; Frequency conversion belt feeder 5 is transported to dry coal mud on the belt conveyor 4 of bottom, and the angle that is provided with of belt conveyor 4 is 16 °-18 °, is provided with weighing device 9 below the belt conveyor 4; Open a mouth on the feeder coal spout mouth of pipe of former coal supply system 8, the chute below the belt conveyor 4 is welded on the feeder coal spout mouth of pipe of former coal supply system 8, dry coal mud relies on the coal pulverizer negative pressure to enter coal pulverizer 3 through the feeder coal spout.For preventing that cold air from entering the thermal efficiency that coal pulverizer 3 influences boiler, has sideboard on the chute; Above the belt conveyor of belt conveyor 4, watt done rain cover, prevented that dry coal mud from making moist with color steel.
The mixed proportion of coal and dry coal mud is according to the caloric value of washing middle coal and dry coal mud and fixed in washing, different heat amount according to coal in washing and dry coal mud, the technical staff of power plant can by coal in washing and dry coal mud separately the weighing device on the coal handling system set coal-feeding quantity hourly respectively, the input quantity of coal and dry coal mud in washing by the adjustment of frequency conversion belt feeder.
Claims (2)
1. thermal power plant's dry coal mud delivery technology method is, designs a circuit of carrying dry coal mud in addition, and dry coal mud is delivered directly to coal feeder floor, coal mixing in course of conveying in avoiding dry coal mud and washing; Concrete process is: at the pulverized-coal fired boiler side one dry coal mud canopy is set, the size of coal slime canopy is decided according to local coal slime resource and boiler coal slime consumption, set hopper in the coal slime canopy, use forklift that dry coal mud is pushed in the hopper, the frequency conversion belt feeder is set below the hopper, the hopper sidewall is established hopper wall vibrator, and the frequency conversion belt feeder is transported to dry coal mud on the belt conveyor of bottom, and the layout angle of belt conveyor is 16 °-18 °; Chute below the belt conveyor is connected on the feeder coal spout mouth of pipe of former coal supply system, and dry coal mud enters coal pulverizer through the feeder coal spout.
2. thermal power plant according to claim 1 dry coal mud delivery technology method is characterized in that: have sideboard on the chute, enter grinding machine to prevent cold air; Belt conveyor top is provided with rain cover, makes moist to prevent dry coal mud.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010598039 CN102175032A (en) | 2010-12-21 | 2010-12-21 | Technological process for delivering dry coal slurry in electric plant |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201010598039 CN102175032A (en) | 2010-12-21 | 2010-12-21 | Technological process for delivering dry coal slurry in electric plant |
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| CN102175032A true CN102175032A (en) | 2011-09-07 |
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| CN 201010598039 Pending CN102175032A (en) | 2010-12-21 | 2010-12-21 | Technological process for delivering dry coal slurry in electric plant |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848241A (en) * | 2015-04-08 | 2015-08-19 | 首钢京唐钢铁联合有限责任公司 | Method for recovering coking ash |
| CN106642185A (en) * | 2016-11-14 | 2017-05-10 | 北京中矿环保科技股份有限公司 | Process and system for mixed burning of coal slime in big proportion in coal-powder boiler |
| CN110793024A (en) * | 2019-11-11 | 2020-02-14 | 四川重盟电力设备制造有限公司 | Screening and crushing device suitable for narrow space of belt layer of storage bin |
| CN113091087A (en) * | 2021-04-22 | 2021-07-09 | 华能伊敏煤电有限责任公司汇流河热电分公司 | Thermal power unloading intelligence control system |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201432999Y (en) * | 2009-01-22 | 2010-03-31 | 赵敬彬 | Storage yard loose unpacked materials conveying and loading system |
| CN201652397U (en) * | 2010-01-22 | 2010-11-24 | 聊城市鲁西化工工程设计有限责任公司 | Dust-collecting coal conveying corridor system |
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2010
- 2010-12-21 CN CN 201010598039 patent/CN102175032A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201432999Y (en) * | 2009-01-22 | 2010-03-31 | 赵敬彬 | Storage yard loose unpacked materials conveying and loading system |
| CN201652397U (en) * | 2010-01-22 | 2010-11-24 | 聊城市鲁西化工工程设计有限责任公司 | Dust-collecting coal conveying corridor system |
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| 《山东电力高等专科学校学报》 20031231 于大海 掺烧煤泥循环流化床锅炉燃料输送系统设计 第6卷, 第3期 * |
| 《热能动力工程》 20020731 段世方 电站锅炉掺烧煤泥可行性研究 第17卷, 第4期 * |
| 《锅炉安装实用手册》 19960930 张世源等 上煤、除灰渣系统 机械工业出版社 第276～277页、第280页 , * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104848241A (en) * | 2015-04-08 | 2015-08-19 | 首钢京唐钢铁联合有限责任公司 | Method for recovering coking ash |
| CN106642185A (en) * | 2016-11-14 | 2017-05-10 | 北京中矿环保科技股份有限公司 | Process and system for mixed burning of coal slime in big proportion in coal-powder boiler |
| CN106642185B (en) * | 2016-11-14 | 2018-08-17 | 北京中矿环保科技股份有限公司 | A kind of coal-powder boiler large scale, which is mixed, burns coal slime technique and system |
| CN110793024A (en) * | 2019-11-11 | 2020-02-14 | 四川重盟电力设备制造有限公司 | Screening and crushing device suitable for narrow space of belt layer of storage bin |
| CN110793024B (en) * | 2019-11-11 | 2021-02-19 | 四川重盟电力设备制造有限公司 | Screening and crushing device suitable for narrow space of belt layer of storage bin |
| CN113091087A (en) * | 2021-04-22 | 2021-07-09 | 华能伊敏煤电有限责任公司汇流河热电分公司 | Thermal power unloading intelligence control system |
| CN113091087B (en) * | 2021-04-22 | 2022-10-18 | 华能伊敏煤电有限责任公司汇流河热电分公司 | Thermal power unloading intelligence control system |
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Application publication date: 20110907 |