CN201954917U - High-moisture lignite drying system - Google Patents
High-moisture lignite drying system Download PDFInfo
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- CN201954917U CN201954917U CN2010205920981U CN201020592098U CN201954917U CN 201954917 U CN201954917 U CN 201954917U CN 2010205920981 U CN2010205920981 U CN 2010205920981U CN 201020592098 U CN201020592098 U CN 201020592098U CN 201954917 U CN201954917 U CN 201954917U
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Abstract
本实用新型涉及一种从高水分褐煤中回收水，并循环利用的褐煤干燥系统。本实用新型的特征在于高水分褐煤与过热水蒸气在干燥器中逆流接触，产生的烟气经过旋风除尘器和布袋除尘器两次除尘，然后进入列管式换热器冷凝，烟气中的水蒸气冷凝后，经循环水泵送入锅炉中产生蒸汽，多余的水从系统中抽出外送。本实用新型的优点是：水蒸气与褐煤直接接触，传热效率高，干燥效果好，安全性高；烟气中的粉尘送往锅炉燃烧，既节约资源，又环保；除尘后的烟气较为纯净，冷凝水后续处理简单，可以循环利用。
The utility model relates to a lignite drying system which recovers water from high-moisture lignite and recycles it. The utility model is characterized in that high-moisture lignite and superheated steam are countercurrently contacted in the drier, and the generated flue gas is dedusted twice by a cyclone dust collector and a bag dust collector, and then enters a tube-and-tube heat exchanger for condensation, and the flue gas is After the water vapor is condensed, it is sent to the boiler by the circulating water pump to generate steam, and the excess water is pumped out from the system and sent out. The utility model has the advantages of direct contact between water vapor and lignite, high heat transfer efficiency, good drying effect, and high safety; the dust in the flue gas is sent to the boiler for combustion, which saves resources and is environmentally friendly; Pure, the follow-up treatment of condensed water is simple and can be recycled.
Description
Technical field
The utility model relates to a kind of high-moisture brown coal drying system, especially a kind of from the high-moisture brown coal recycle-water, and recycling brown coal drying system.
Background technology
China's lignite resource is abundant, mainly is distributed in provinces such as the Inner Mongol, Heilungkiang, Yunnan, and these regional brown coal moisture are up to 30wt%～50wt%.Moisture height in the brown coal, caloric value is low, is not easy to long-distance transportation, also is not suitable for direct combustion power generation.Handle the moisture that reduces brown coal by drying, can improve the caloric value of brown coal, also can reduce cost of transportation.In addition, these mine water resources often relatively lack, if can reclaim the moisture in the brown coal, and are used, and agricultural, the industrial significance local for development are very great.
Summary of the invention
The purpose of this utility model provides a kind of drying efficiency height, safety, environmental protection, the brown coal drying system that Water Cycle is utilized in the brown coal.High-moisture brown coal and the overheated steam counter current contacting in drier that is characterised in that of the present utility model, the flue gas that produces is through cyclone dust collectors and twice dedusting of sack cleaner, enter the tubular heat exchanger condensation thereafter, behind the water vapor condensation in the flue gas, send into through water circulating pump and to produce steam in the boiler, unnecessary water is extracted out from system and is sent outside.Below in conjunction with accompanying drawing, the utility model is described further.
Description of drawings
Accompanying drawing 1 is the utility model flow chart.
Among the figure: 1, boiler, 2, drum, 3, drier, 4, cyclone dust collectors, 5, sack cleaner, 6, tubular heat exchanger, 7, settling tank, 8, circulating water pool, 9, water circulating pump.
The specific embodiment
As follows with reference to accompanying drawing 1: the overheated steam that is produced by boiler 1 enters drum 2, the overheated steam that is come out by drum 2 enters drier from the bottom of drier 3, brown coal add from the top of drier, dry good finished product is discharged from the bottom of drier, the flue gas that comes out from drier top enters the air inlet of cyclone dust collectors 4 through pipeline, bigger coal particle is discharged from the discharging opening of cyclone dust collectors and is sent to the boiler combustion utilization, the flue gas that comes out from the air outlet of cyclone dust collectors enters the air inlet of sack cleaner 5 through pipeline, the less coal particle of particle diameter is discharged from the discharging opening of sack cleaner and is sent to the boiler combustion utilization, the flue gas that comes out from the sack cleaner air outlet, enter the tube side (shell side is walked cooling water) of tubular heat exchanger 6, water vapor condensation in the flue gas becomes aqueous water, flow into settling tank 7 through pipeline, further remove coal dust, clear water enters circulating water pool 8, send into through water circulating pump and to produce overheated steam in the boiler, wherein incondensible tail gas emptying, unnecessary water are extracted out from system and are sent outside.
Claims (3)
1. high-moisture brown coal drying system, it is characterized in that: high-moisture brown coal and overheated steam counter current contacting in drier, flue gas is through cyclone dust collectors and twice dedusting of sack cleaner, enter the tubular heat exchanger condensation then, behind the water vapor condensation in the flue gas, send into through water circulating pump and to produce steam in the boiler, unnecessary water is extracted out from system and is sent outside.
2. high-moisture brown coal drying according to claim 1 system, it is characterized in that: the coal particle that twice dedusting got off is sent to the boiler combustion utilization.
3. high-moisture brown coal drying according to claim 1 system is characterized in that: the first-selected fixed tube sheet type of tubular heat exchanger, also can select floating head type and U type tubular type for use.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205920981U CN201954917U (en) | 2010-10-29 | 2010-10-29 | High-moisture lignite drying system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010205920981U CN201954917U (en) | 2010-10-29 | 2010-10-29 | High-moisture lignite drying system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201954917U true CN201954917U (en) | 2011-08-31 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010205920981U Expired - Fee Related CN201954917U (en) | 2010-10-29 | 2010-10-29 | High-moisture lignite drying system |
Country Status (1)
| Country | Link |
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| CN (1) | CN201954917U (en) |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410552A (en) * | 2011-09-21 | 2012-04-11 | 西安交通大学 | A large-scale pulverized coal centralized preparation system and distribution method |
| CN102688663A (en) * | 2012-06-14 | 2012-09-26 | 华电重工股份有限公司 | Method and device for recycling steam in coal drying waste wet gas |
| CN103673534A (en) * | 2013-12-06 | 2014-03-26 | 苏杰 | Brown coal drying water-lifting recycling system using waste heat of power plant |
| CN104236294A (en) * | 2014-09-25 | 2014-12-24 | 南通天泽化工有限公司 | Sodium acetate drying device |
| CN107036432A (en) * | 2017-06-03 | 2017-08-11 | 中国电力工程顾问集团东北电力设计院有限公司 | Reclaim heat and extract raw coal drying system before the coal pulverizer of moisture in coal |
| CN109663447A (en) * | 2019-02-21 | 2019-04-23 | 唐山市神州机械有限公司 | A kind of dry separation system and dry dressing method of the underground based on circulating current |
-
2010
- 2010-10-29 CN CN2010205920981U patent/CN201954917U/en not_active Expired - Fee Related
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102410552A (en) * | 2011-09-21 | 2012-04-11 | 西安交通大学 | A large-scale pulverized coal centralized preparation system and distribution method |
| CN102410552B (en) * | 2011-09-21 | 2013-12-11 | 西安交通大学 | Large-scale centralized preparation system for pulverized coal and distribution method |
| CN102688663A (en) * | 2012-06-14 | 2012-09-26 | 华电重工股份有限公司 | Method and device for recycling steam in coal drying waste wet gas |
| CN102688663B (en) * | 2012-06-14 | 2016-01-13 | 华电重工股份有限公司 | A kind of method and device reclaiming steam in the useless moisture of coal drying |
| CN103673534A (en) * | 2013-12-06 | 2014-03-26 | 苏杰 | Brown coal drying water-lifting recycling system using waste heat of power plant |
| CN103673534B (en) * | 2013-12-06 | 2016-07-13 | 大唐国际发电股份有限公司内蒙古分公司 | Utilize residual heat of electric power plant drying brown coal water lift recovery system |
| CN104236294A (en) * | 2014-09-25 | 2014-12-24 | 南通天泽化工有限公司 | Sodium acetate drying device |
| CN107036432A (en) * | 2017-06-03 | 2017-08-11 | 中国电力工程顾问集团东北电力设计院有限公司 | Reclaim heat and extract raw coal drying system before the coal pulverizer of moisture in coal |
| CN109663447A (en) * | 2019-02-21 | 2019-04-23 | 唐山市神州机械有限公司 | A kind of dry separation system and dry dressing method of the underground based on circulating current |
| CN109663447B (en) * | 2019-02-21 | 2024-03-08 | 唐山神州机械集团有限公司 | Underground dry separation system and method based on circulating air flow |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110831 Termination date: 20111029 |