CN103471128A - Coal injection system for Maerz coal kiln - Google Patents
Coal injection system for Maerz coal kiln Download PDFInfo
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- CN103471128A CN103471128A CN2013104594752A CN201310459475A CN103471128A CN 103471128 A CN103471128 A CN 103471128A CN 2013104594752 A CN2013104594752 A CN 2013104594752A CN 201310459475 A CN201310459475 A CN 201310459475A CN 103471128 A CN103471128 A CN 103471128A
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Abstract
A coal injection system for a 600t/d Swiss Maerz coal kiln is transformed into a barn pump-free type energy continuous conveying system. A rotating air-locking type pulverized coal feeder is adopted by a sending system thereof for sending powder to a powder accurate measuring device; the instant and accumulated mean quality fluxes of small-flow coal powder can be monitored on-line; a coal powder conveying system is greatly simplified; more equipment and related accessories are saved; and the constructing, maintaining and managing costs are greatly lowered.
Description
Technical field
This patent relates to the technical field of a kind of Switzerland coal-fired Maers Kiln stove coal injection system.
Background technology
Coal-fired Maers Kiln stove is to adopt silo pump type strength powder feed system and weight-loss method discontinuous ground monitoring low discharge to powder system originally, the method of operation of weight-loss method monitoring low discharge to powder carried and adopted to this storehouse pump type discontinuous strength of using, make the coal injection system complex, cause initial cost and operation cost to increase considerably the waste with the energy.
Summary of the invention
The purpose of this patent is: by the coal-fired Maers Kiln stove of Switzerland, originally adopt storehouse pump type discontinuous air-transport system and adopt the method for operation of monitoring low discharge in weight-loss method discontinuous ground to powder, change over without storehouse pump type continous way strength coal injection system, in order to some drawbacks of overcoming storehouse pump type discontinuous strength coal injection system and the expense of decrease capital construction initial cost and maintenance management.After the coal injection system changes, not only can save two cover storehouse pump type discontinuous air-transport systems and corresponding weight-loss method measuring system, significantly simplify system, can continuously coal dust be delivered to coal-fired Maers Kiln stove again, simultaneously again can on-line monitoring the flow of coal dust in a small amount.Without storehouse pump type, carry continuously, can save storehouse pump type system and charging/discharging valve thereof, large number quipments valve accessories, weight-loss method is measured with a large amount of equipment and affiliated facilities such as metering feed bin and weighing sensing systems, makes that the coal injection system is more succinct, unobstructed, automation function is stronger.Monitoring by the Weighing type sensor to the single-phase flow pulverized coal flow, but monitor is sent into the coal dust amount of coal-fired Maers Kiln stove and traffic trends curve, instantaneous and accumulative total mass flow and hear rate.
This patent solves storehouse pump type discontinuous air-transport system and corresponding weight-loss method is measured the problem existed in little pulverized coal flow system, the technical scheme adopted is: the coal dust ground out through coal pulverizer is sent into powder-storage bin (1), freely fall into rotation air-locked type machine supplying powder (3) from powder-storage bin by powder sinking tube (2) coal dust amount again, machine supplying powder is dialled in accurate measurement device of powder (4) according to its impeller by coal dust, coal dust after measuring falls into low discharge coal, pulverulent fuel mixer (5), the compressed air duct of compressed air (6) with certain pressure and flow, a small amount of coal dust in blender is blowed out to blender, coal dust delivers in coal-fired Maers Kiln stove through sending pipeline (7) burning of dusting.Powder-storage bin is to the powder position between machine supplying powder and the rotating vane of machine supplying powder, can stop and offset the pressure differential of carrying between compressed-air actuated static pressure and powder-storage bin, make transmitting system without altering on gas, guarantee that powder dropping smoothing freely falls, coal dust is delivered to coal-fired Maers Kiln stove continuously after the on-line monitoring pulverized coal flow.
The beneficial effect of this patent
Cancel storehouse pump and valve accessories and fluidized wind system, can significantly simplify production system, reduce production costs, save energy consumption, make defeated powder without the plugging phenomenon, the powder system carries coal ash to coal-fired Maers Kiln stove more safely continuouslyly and unobstructedly.
The accompanying drawing explanation
Below in conjunction with drawings and Examples, this patent is further illustrated.
Accompanying drawing is the structural map of this patent:
1. powder-storage bin, 2. powder sinking tube, 3. rotation air-locked type machine supplying powder, 4. accurate measurement device of powder, 5. the low discharge coal dust is mixed
Close device 6. compressed air pipings, 7. send pipeline.Above parts have formed without storehouse pump moulded coal powder transmitting system.
The specific embodiment
In accompanying drawing, take 600t/d to flow the two thorax particulate Maers Kiln stove coal injection systems of accumulation of heat be example, its powder delivering amount is about 0.4-0.5kg/s, be characterized in that powder delivering amount is little, because general impeller type pulverized coal feeder can't be monitored the powder amount of low discharge, so want integrated rotation air-locked type machine supplying powder (3) and accurate measurement device of powder (4), carry out the monitoring of low discharge coal dust.Cancel storehouse pump and relevant valve accessories thereof, with without storehouse pump type induction system replacement, simplifying coal powder conveying system, safe transport continuously again, and can stop to carry on gas and alter, ensure the safe operation of deduster, but on-line real time monitoring is sent into the mass flow of coal-fired Maers Kiln stove coal dust and is shown online instantaneous and accumulative total mean mass flux and hear rate again.
Claims (2)
1. a coal-fired Maers Kiln stove coal injection system, the technical characterictic of its transmitting system is: by the transmitting system without storehouse pump type air-transport system, mainly rotation air-locked type machine supplying powder (3), accurate measurement device of powder (4) and low discharge coal, pulverulent fuel mixer (5) etc., consist of.
According to the accurate measurement device of powder (4) of claim 1, described coal-fired Maers Kiln stove coal injection system but instantaneous and accumulative total mean mass flux and the hear rate thereof of on-line monitoring low discharge coal dust.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104594752A CN103471128A (en) | 2013-10-08 | 2013-10-08 | Coal injection system for Maerz coal kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013104594752A CN103471128A (en) | 2013-10-08 | 2013-10-08 | Coal injection system for Maerz coal kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN103471128A true CN103471128A (en) | 2013-12-25 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2013104594752A Pending CN103471128A (en) | 2013-10-08 | 2013-10-08 | Coal injection system for Maerz coal kiln |
Country Status (1)
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| CN (1) | CN103471128A (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60207823A (en) * | 1984-03-30 | 1985-10-19 | Kawasaki Heavy Ind Ltd | Pulverized coal-air ratio adjusting device in coal pulverizer |
| JPS63123916A (en) * | 1986-11-10 | 1988-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal manufacturing and feeding system |
| JP2002248373A (en) * | 2001-02-27 | 2002-09-03 | Babcock Hitachi Kk | Coal pulverizing and supplying system |
| CN1853089A (en) * | 2003-07-04 | 2006-10-25 | 菲斯特有限责任公司 | Method and device for the continuous gravimetric metering of flowing materials for burner systems |
| CN202884964U (en) * | 2012-10-31 | 2013-04-17 | 山西蓝天环保设备有限公司 | High-moisture pulverized coal conveying system |
| CN103206993A (en) * | 2012-06-26 | 2013-07-17 | 孙家鼎 | Scale type device for monitoring dynamitic powder flows |
-
2013
- 2013-10-08 CN CN2013104594752A patent/CN103471128A/en active Pending
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPS60207823A (en) * | 1984-03-30 | 1985-10-19 | Kawasaki Heavy Ind Ltd | Pulverized coal-air ratio adjusting device in coal pulverizer |
| JPS63123916A (en) * | 1986-11-10 | 1988-05-27 | Ishikawajima Harima Heavy Ind Co Ltd | Pulverized coal manufacturing and feeding system |
| JP2002248373A (en) * | 2001-02-27 | 2002-09-03 | Babcock Hitachi Kk | Coal pulverizing and supplying system |
| CN1853089A (en) * | 2003-07-04 | 2006-10-25 | 菲斯特有限责任公司 | Method and device for the continuous gravimetric metering of flowing materials for burner systems |
| CN103206993A (en) * | 2012-06-26 | 2013-07-17 | 孙家鼎 | Scale type device for monitoring dynamitic powder flows |
| CN202884964U (en) * | 2012-10-31 | 2013-04-17 | 山西蓝天环保设备有限公司 | High-moisture pulverized coal conveying system |
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Application publication date: 20131225 |