CN102602711A

CN102602711A - Method for directly conveying coal ash in ash storage hopper of dust collectors

Info

Publication number: CN102602711A
Application number: CN2012100554959A
Authority: CN
Inventors: 孙家鼎
Original assignee: Individual
Current assignee: Individual
Priority date: 2012-03-06
Filing date: 2012-03-06
Publication date: 2012-07-25

Abstract

The invention relates to a method for directly conveying coal ash in ash storage hoppers of dust collectors. For a long period of time, coal ash in a plurality of ash storage hoppers of dust collectors in a coal-fired power plant is mostly gathered by the aid of a pump type pneumatic ash conveying system and a plurality of ash conveying pipes to be conveyed to an ash storage warehouse in the plant, and then is loaded into an ash transport tank truck from the plant to be transported to a comprehensive utilization place far away from the power plant, and obviously, a lot of trouble and waste of energy are really caused for the power plant due to the short-distance transportation within the plant. If the short-distance transportation is omitted and the method for directly conveying the coal ash in the ash storage hoppers of the dust collectors within the plant is adopted, the coal ash is directly loaded into a powder material logistic transport vehicle from the ash hoppers of the dust collectors to be transported to a comprehensive utilization place, and a large quantity of energy consumption can be saved.

Description

Directly carry the method for fly ash in the dust exhaustor storage ash bucket

Technical field

The present invention relates to the method for fly ash in a kind of direct conveying dust exhaustor storage ash bucket.

Background technology

The fly ash of a plurality of storage ash buckets of coal-burning power plant's dust exhaustor for a long time; Mostly be to concentrate through silo pump type Pneumatic ash conveying system and Duo Gen ash conveying pipe to be transported to the grey storehouse of storage in the factory; The grey storehouse of the storage ash can transport trolley of packing into is transported to the comprehensive utilization land used away from power plant in the factory again; Obviously, the conveying of in factory, carrying out this segment distance is unnecessary, has really increased the waste of a lot of accidents and the energy to power plant.If save the conveying of this segment distance; Change into by the dust exhaustor storage ash bucket ash can transport trolley of directly packing into and be transported to the comprehensive utilization land used; Not only save huge air-transport system; Also can reduce the pollution of fine particle (PM2.5), reduce accident rate and maintenance management work, and can save a large amount of energy consumptions.

Summary of the invention

The objective of the invention is: change traditional defeated grey method; Adopt the method for directly carrying fly ash in the dust exhaustor storage ash bucket in the factory; Can save huge silo pump type Pneumatic ash conveying system, save a large amount of energy resource consumptions and reduce the Operation, Administration and Maintenance cost of overhaul of ash disposal system significantly.

Directly carry the method for fly ash in the dust exhaustor storage ash bucket in the factory; The technical scheme that is adopted is: a rotary type cinder conveyer (4) with lock gas and monitoring fly ash flow dual-use function respectively is installed below each storage ash bucket of dust exhaustor; Under several storage ash buckets of same electric field, concentrate a cable-styled cinder conveyer of tooth (5) is installed; Can be as required respectively the dry powder coal ash be concentrated to be conveyed into ash can transport trolley (9), be transported to factory outside comprehensive utilization land used away from power plant, or with the concentrated humidifier (11) that oppositely is delivered to of fly ash; The ash that will the wet automatic tipping bucket transport trolley (12) of packing into directly is transported to outside the factory subsequent use storage ash.

Beneficial effect of the present invention

Owing to directly carry the method for fly ash in the dust exhaustor storage ash bucket in the factory; Instead from dust exhaustor storage ash bucket to factory in the conveying of this segment distance of the grey storehouse of storage; Directly the dry powder coal ash ash can transport trolley (9) of packing into is transported to the comprehensive utilization land used away from power plant; The ash that maybe will the wet automatic tipping bucket transport trolley (12) of packing into directly is transported to outside the factory subsequent use storage ash.Can bring huge economic interests thus, be example with certain 2 * 300MW power plant ash disposal system, and the beneficial effect that reality is produced is listed as down: cancellation silo pump type Pneumatic ash conveying system can reduce cost of equipment: 9,930,000 yuan; Erected cost: 1,420,000 yuan; Expense is gone at the stand: 1,580,000 yuan; Yard piping: 2,700,000 yuan; Ash disposal complex building: 5,080,000 yuan; Ash storehouse expense: 7,040,000 yuan; Ash disposal Air compressor power consumption/year: 1,300 ten thousand degree (amounting to 1597 tons of mark coals); Maintenance materials labour cost/year: about 2,000,000 yuan, R rates quoted above adds up to 3,125 ten thousand yuan, and listed expense does not still contain grey storehouse power consumption and maintenance cost; Pipeline and grey storehouse sapce charge are used.

Except that producing above beneficial effect; Accidents such as the stifled pump of severe wear, fly ash of " storage ash bucket high charge level is reported to the police ", valve and the ash conveying pipe that can avoid adopting silo pump type Pneumatic ash conveying system to be in operation and possibly occur, plugging, these accidents all can be brought the economic loss that is difficult to estimate to power plant.

Description of drawings

Below in conjunction with accompanying drawing and embodiment, the method for directly carrying fly ash in the dust exhaustor storage ash bucket in the factory is done further explanation.

Accompanying drawing is a scheme drawing of directly carrying fly ash method in the dust exhaustor storage ash bucket in the factory:

1. go up the cable-styled packing auger 6. electronic insertion plate door 7. movable ash tube 8. ash can transpories trolley dress ash mouthful 9. ash can transpories trolley 10. of 2. times level-sensing devices of level-sensing device, 3. maintenance insertion plate doors, 4. rotary type cinder conveyers, 5. teeth and blow plugging road 11. humidifiers, 12. automatic tipping bucket transport trolley 13. suction tubes, above each several part has realized directly carrying in the factory method of fly ash in the dust exhaustor storage ash bucket.

The specific embodiment

In the accompanying drawing; Represented only to have the delivery system of two dust exhaustors storages of A and B ash bucket: when the ash position of A, two storage ash buckets of B arrives when going up level-sensing device (1), fly ash falls into rotary type cinder conveyer (4) from A, two storage ash buckets of B according to its deadweight respectively, can drop into when ash is smooth if the ash port of storage ash bucket falls and blow plugging road (10) mediation; Fly ash can maximum ash discharge amount be that quantitative mode is dialled in the cable-styled packing auger of tooth (5); When the ash position of fly ash in the storage ash bucket arrives down level-sensing device (2),, can suspend the operation of rotary type cinder conveyer for energy-conservation; The grey bit recovery of treating fly ash is reset defeated ash during to last level-sensing device (1) again.When carrying dry ash, but the cable-styled packing auger forward rotation of tooth is concentrated ash through movable ash tube (7) and the grey tank car grey mouth of dress (8) to fall into ash can transport trolley (9); After dry ash was filled, the electronic insertion plate door of twice (6) was closed in the cable-styled packing auger running of the formula that stops operating cinder conveyer and tooth; Valve open with suction tube (13); After pumping dust, movable ash tube (7) and ash can transport trolley are thrown off, can start the ash can transport trolley and transport total utilization of PCA ground to.When needs transport wet ash toward storage ash field; But the cable-styled packing auger antiport of tooth; Dry ash concentrated be transported to after humidifier (11) squirts, the ash that will wet is fallen automatic tipping bucket transport trolley (12), treat that wet ash is filled car after; The cable-styled packing auger of the formula that stops operating cinder conveyer and tooth, automatically the tipping bucket transport trolley can start and transports subsequent use storage ash field to.

Claims

1. directly carry dust exhaustor to store up the method for fly ash in the ash bucket for one kind; It is characterized in that storing up and be provided with level-sensing device (1) and following level-sensing device (2) in the ash bucket; Fly ash in the storage ash bucket is interconnected through maintenance insertion plate door (3) and rotary type cinder conveyer (4), the cable-styled packing auger of tooth (5); The cable-styled packing auger of tooth can two-wayly rotate, and during the cable-styled packing auger forward rotation of tooth, fly ash communicates with ash can transport trolley dress ash mouthful (8) through movable ash tube (7) and the electronic insertion plate door of twice; With the fly ash ash can transport trolley (9) of packing into, and there is the plugging road (10) that blows that the suction tube (13) that prevents flying dust and raise and mediation fly ash flow to constitute outward.

2. the method for fly ash in the direct conveying dust exhaustor storage ash bucket according to claim 1; It is characterized in that rotary type cinder conveyer (4) is a circular shell; In be equipped with by many blades and form a wheel rotor, the top and the gap between the inner walls of blade are very little, have the function of lock gas; The flow of fly ash can be monitored in the space of equivalent volume between blade and the blade according to the rotating speed of impeller; The cable-styled packing auger of tooth (5) is a dead front type rectangular box; The trough of belt type is housed in the casing dials the steel rope of rod; Can stir fly ash by the frequency control motor driving along the casing casing flows; During the cable-styled packing auger backward rotation of tooth, fly ash is through humidifier, and the ash that will wet is sent into automatic tipping bucket bulk cement truck (12).