CN106568093A - Slag dredger slag water system based on two-stage circulation and sedimentation and used for supercritical unit - Google Patents
Slag dredger slag water system based on two-stage circulation and sedimentation and used for supercritical unit Download PDFInfo
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- CN106568093A CN106568093A CN201610528713.4A CN201610528713A CN106568093A CN 106568093 A CN106568093 A CN 106568093A CN 201610528713 A CN201610528713 A CN 201610528713A CN 106568093 A CN106568093 A CN 106568093A
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- water
- slag
- dragveyer
- water system
- moisturizing
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- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J1/00—Removing ash, clinker, or slag from combustion chambers
- F23J1/06—Mechanically-operated devices, e.g. clinker pushers
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- Mechanical Engineering (AREA)
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Abstract
The invention relates to a slag dredger slag water system based on two-stage circulation and sedimentation and used for a supercritical unit. Slag water circulates sequentially through industrial water replenishment, a water seal tank, a slag dredger overflow water tank, a first clarification tank, a second clarification tank, a sewage pump and a slag dredger. The modified slag water system operates quite stably, and equipment operates normally. It is learnt from the operating condition of the optimized slag water system that industrial water replenishment is adopted by the optimized slag water system for water replenishment of the water seal tank, the water level of the water seal tank can be maintained, and the requirement for chain flushing carbon-containing pellet water can be met. The temperatures of guide wheels in the slag dredger, a ship body and a slag well are all within the normal working range. The water level of the water seal tank is maintained through industrial water replenishment so that slag accumulation in the water seal tank can be effectively prevented. Calculation shows that the total spare part fee saved by each slag water system is about 100 thousand yuan per year, and the total auxiliary power saved by each slag water system is 331.8 thousand kilowatts per year, namely the fee is saved by about 1.5 million yuan.
Description
Technical field
The present invention relates to a kind of dragveyer Slag-water system of supercritical unit based on secondary cycle precipitation.
Background technology
Prior art device overview
Certain factory adopts two sets of Slag-water systems of A, B, under normal operating condition, it is ensured that a set of Slag-water system normally runs.Pulp water
By dragveyer overflow tank → clarification pond 1 → clarification pond 2 → buffering pond → pulp water circulating pump → self-cleaning filter screen →
Plate type heat exchanger → dragveyer.Simultaneously pulp water passes through clarification pond → dredge pump → dragveyer, so as to form a loop.
1. the fault rate of Slag-water system equipment is higher
Because coal contains larger ash so that the lime-ash contained in the pulp water that dragveyer overflow goes out is more.It is substantial amounts of
Lime-ash is deposited to the bottom in clarification pond, and lime-ash is returned dragveyer by dredge pump, so as to cause the inlet screen Jing of dredge pump normal
Block, and the damage in impeller of pump is larger.Meanwhile, the entrance of pulp water circulating pump is easily caused accumulated slag blocking, rotary sieve and
Plate type heat exchanger due to lime-ash dirty and blockage phenomenon.
2. the efficiency of Slag-water system is low
Because slag inclusion is more in pulp water so that Jing is normal at dredge pump, pulp water circulating pump, plate type heat exchanger, water seal nozzle slot
There is blocking, the cooling effect of pulp water is deteriorated.Counted according to daily maintenance, rotary sieve and plate type heat exchanger are needed per two weeks
Clear up once, so as to reduce the utilization rate of Slag-water system.
In view of above-mentioned defect, the positive in addition research and innovation of the design people is based on to founding a kind of supercritical unit
The dragveyer Slag-water system of secondary cycle precipitation so as to more the value in industry.
The content of the invention
To solve above-mentioned technical problem, it is an object of the invention to provide a kind of supercritical unit of energy-saving and environmental protection is based on two
The dragveyer Slag-water system of level circulation precipitation.
Supercritical unit of the present invention is based on the dragveyer Slag-water system of secondary cycle precipitation, and the flow process of pulp water circulation is：According to
It is secondary to clarify pond, dredge pump, dragveyer through industrial moisturizing, water sealed tank, dragveyer overflow tank, the first clarification pond, second.
Further, stop the operation of boiler Slag-water system, by adjusting industry water moisturizing manually operated door aperture, control water seal
Groove, dragveyer, slag bath water level.
Further, the aperture of industrial moisturizing manually operated door is 1/6 circle.
Further, dragveyer water temperature and water level are made regular check on, when dragveyer water temperature is higher than 80 DEG C, starts pulp water system
System.Simultaneously the liquidometer in buffering pond is moved to into clarification pond, the water level in observation clarification pond is 2.75m slag bath moisturizing electrically operated gates
Start moisturizing, water level is that 2.85 meters of moisturizing electrically operated gates stop moisturizing, close Slag-water system outlet total door manually.
By such scheme, the present invention at least has advantages below：
Slag-water system of the present invention need not increase equipment, improve the utilization rate of equipment, and live real-time is stronger.By industry
Moisturizing maintains water sealed tank water level, can effectively prevent accumulated slag in water sealed tank.
The improved Slag-water system of the present invention runs relatively stable, equipment normal operation.After optimizing to Slag-water system
Ruuning situation from the point of view of：Slag-water system after optimization, moisturizing is carried out by industrial moisturizing to water sealed tank, can maintain water sealed tank water
Position and satisfaction rush the requirement of chain water.Dragveyer inner guide pulley, hull and slag well temperature are in normal range of operation.By industry
Moisturizing maintains water sealed tank water level, can effectively prevent accumulated slag in water sealed tank.Calculate the spare part expense that annual 4 slag water systems are saved
With total 400,000 yuan/year are about saved, save station service and add up to 132.7 ten thousand degree of electricity/years, the expense of changing into be about 599.7 ten thousand yuan.4
Yuan/year of unit Slag-water system total savings 639.7 ten thousand.2nd, the enforcement of the technological achievement improves the utilization rate of equipment, drop
Low spare parts consumption, alleviates the labor intensity of attendant, achieves splendid economic benefit, and the implementation at scene is stronger,
Ensure that the safe and reliable long-term operation of equipment.
Described above is only the general introduction of technical solution of the present invention, in order to better understand the technological means of the present invention,
And can be practiced according to the content of description, below with presently preferred embodiments of the present invention and coordinate accompanying drawing describe in detail as after.
Description of the drawings
Fig. 1 is block diagram of the supercritical unit of the present invention based on the dragveyer Slag-water system of secondary cycle precipitation；
Fig. 2 is structural representation of the supercritical unit of the present invention based on the dragveyer Slag-water system of secondary cycle precipitation.
Specific embodiment
With reference to the accompanying drawings and examples, the specific embodiment of the present invention is described in further detail.Hereinafter implement
Example is not limited to the scope of the present invention for illustrating the present invention.
Referring to Fig. 1 and Fig. 2, a kind of supercritical unit described in a preferred embodiment of the present invention is based on secondary cycle precipitation
Dragveyer Slag-water system, pulp water circulation flow process be：Sequentially pass through industrial moisturizing, water sealed tank, dragveyer overflow tank, first clear
Clear water reserviors, the second clarification pond, dredge pump, dragveyer.
Stop the operation of boiler Slag-water system, by adjusting industry water moisturizing manually operated door aperture, control water sealed tank, dragveyer,
Slag bath water level.The aperture of industrial moisturizing manually operated door is 1/6 circle.
Dragveyer water temperature and water level are made regular check on, when dragveyer water temperature is higher than 80 DEG C, starts Slag-water system.Simultaneously will be slow
The liquidometer in bath pond moves to clarification pond, and the water level in observation clarification pond starts moisturizing, water for 2.75m slag bath moisturizing electrically operated gates
Position stops moisturizing for 2.85 meters of moisturizing electrically operated gates, closes Slag-water system outlet total door manually.
Main contributions and benefit：1st, improved Slag-water system runs relatively stable, equipment normal operation.By to pulp water
From the point of view of ruuning situation after system optimization：Slag-water system after optimization, moisturizing, Ke Yiwei are carried out by industrial moisturizing to water sealed tank
Water holding sealing groove water level and satisfaction rush the requirement of chain water.Dragveyer inner guide pulley, hull and slag well temperature are in normal range of operation
It is interior.Water sealed tank water level is maintained by industrial moisturizing, accumulated slag in water sealed tank can be effectively prevented.Calculate annual 4 slag water systems
The spare part expense of saving about saves total 400,000 yuan/year, saves station service and adds up to 132.7 ten thousand degree of electricity/years, the expense of changing into be about
599.7 ten thousand yuan.4 yuan/year of unit Slag-water system total savings 639.7 ten thousand.2nd, the enforcement of the technological achievement improves and sets
Standby utilization rate, reduces spare parts consumption, alleviates the labor intensity of attendant, achieves splendid economic benefit, scene
Implementation it is stronger, it is ensured that the safe and reliable long-term operation of equipment.
The forward and backward technical specification contrast of achievement：
1. the fault rate 5% of Slag-water system equipment, is reduced to 1.5% before transforming after transformation.
2. the efficiency of Slag-water system is improved.
3rd, stop Slag-water system operation, moisturizing is carried out to water sealed tank by industrial moisturizing, water sealed tank water level can be maintained with
And satisfaction rushes the requirement of chain water.
4th, dragveyer inner guide pulley, hull and slag well temperature are in normal range of operation.
5th, water sealed tank water level is maintained by industrial moisturizing, can effectively prevents accumulated slag in water sealed tank.
6th, the waste of Slag-water system spare part is reduced, and station service is saved ideal.Calculate annual 4 slags water system section
The spare part expense of province about saves total 400,000 yuan/year, saves station service and adds up to 132.7 ten thousand degree of electricity/years, the expense of changing into be about
599.7 ten thousand yuan.4 yuan/year of unit Slag-water system total savings 639.7 ten thousand.
The above is only the preferred embodiment of the present invention, is not limited to the present invention, it is noted that for this skill
For the those of ordinary skill in art field, on the premise of without departing from the technology of the present invention principle, can also make it is some improvement and
Modification, these are improved and modification also should be regarded as protection scope of the present invention.
Claims (4)
1. the dragveyer Slag-water system that a kind of supercritical unit is precipitated based on secondary cycle, it is characterised in that：The stream of pulp water circulation
Cheng Wei：Sequentially pass through industrial moisturizing, water sealed tank, dragveyer overflow tank, first clarification pond, second clarification pond, dredge pump,
Dragveyer.
2. the dragveyer Slag-water system that supercritical unit according to claim 1 is precipitated based on secondary cycle, its feature exists
In：Stop the operation of boiler Slag-water system, by adjusting industry water moisturizing manually operated door aperture, control water sealed tank, dragveyer, slag bath water
Position.
3. the dragveyer Slag-water system that supercritical unit according to claim 2 is precipitated based on secondary cycle, its feature exists
In：The aperture of industrial moisturizing manually operated door is 1/6 circle.
4. the dragveyer Slag-water system that supercritical unit according to claim 1 is precipitated based on secondary cycle, its feature exists
In：Dragveyer water temperature and water level are made regular check on, when dragveyer water temperature is higher than 80 DEG C, starts Slag-water system.Simultaneously by buffered water
The liquidometer in pond moves to clarification pond, and the water level in observation clarification pond starts moisturizing for 2.75m slag bath moisturizing electrically operated gates, and water level is
2.85 meters of moisturizing electrically operated gates stop moisturizing, close Slag-water system outlet total door manually.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528713.4A CN106568093A (en) | 2016-06-30 | 2016-06-30 | Slag dredger slag water system based on two-stage circulation and sedimentation and used for supercritical unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201610528713.4A CN106568093A (en) | 2016-06-30 | 2016-06-30 | Slag dredger slag water system based on two-stage circulation and sedimentation and used for supercritical unit |
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| Publication Number | Publication Date |
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| CN106568093A true CN106568093A (en) | 2017-04-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201610528713.4A Pending CN106568093A (en) | 2016-06-30 | 2016-06-30 | Slag dredger slag water system based on two-stage circulation and sedimentation and used for supercritical unit |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954356A (en) * | 2018-06-25 | 2018-12-07 | 中国神华能源股份有限公司 | Dragveyer |
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| JP2006016253A (en) * | 2004-07-01 | 2006-01-19 | Mitsubishi Materials Corp | Granulation water-circulation type slag granulation method and slag granulation facility |
| CN202868702U (en) * | 2012-11-16 | 2013-04-10 | 青岛海洲电力设备有限公司 | Scratch board dregs-catcher without overflow water |
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| CN105627339A (en) * | 2016-03-16 | 2016-06-01 | 神华集团有限责任公司 | Cyclic deslagging system |
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2016
- 2016-06-30 CN CN201610528713.4A patent/CN106568093A/en active Pending
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| JP2006016253A (en) * | 2004-07-01 | 2006-01-19 | Mitsubishi Materials Corp | Granulation water-circulation type slag granulation method and slag granulation facility |
| JP4483435B2 (en) * | 2004-07-01 | 2010-06-16 | 三菱マテリアル株式会社 | Slag granulation method and slag granulation equipment |
| CN202868702U (en) * | 2012-11-16 | 2013-04-10 | 青岛海洲电力设备有限公司 | Scratch board dregs-catcher without overflow water |
| CN203807271U (en) * | 2014-04-02 | 2014-09-03 | 大唐贵州发耳发电有限公司 | Ash water removal system for thermal power plant |
| CN204153792U (en) * | 2014-10-10 | 2015-02-11 | 中国能源建设集团安徽省电力设计院 | A kind of anti-overflow circulatory system for water immersion type scraping board slag conveyor |
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Non-Patent Citations (1)
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| 张磊: "《600MW机组炉底渣水系统优化改造》", 《应用能源技术》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108954356A (en) * | 2018-06-25 | 2018-12-07 | 中国神华能源股份有限公司 | Dragveyer |
| CN108954356B (en) * | 2018-06-25 | 2019-10-15 | 中国神华能源股份有限公司 | Dragveyer |
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Application publication date: 20170419 |
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