CN202116499U

CN202116499U - Double-fork chute for dedusting and discharging ash by dry quenching

Info

Publication number: CN202116499U
Application number: CN2011202210044U
Authority: CN
Inventors: 汪洁; 钱志明; 岳振国
Original assignee: Nuoming High-Temperature Refractory Material Co Ltd Yixing
Current assignee: Jiangsu Nuoming High Temperture Materials Co., Ltd.
Priority date: 2011-06-27
Filing date: 2011-06-27
Publication date: 2012-01-18
Anticipated expiration: 2021-06-27

Abstract

A double-fork chute for dedusting and discharging ash by dry quenching is disclosed. Bricks are piled up on the inner wall of the double-fork chute and adjacent bricks are spliced together. With adoption of the inner wall of the double-fork chute piled up by bricks, the utility model can effectively resist erosion of high temperature coke powder particles and heat exchange for the bricks have abrasive resistance and higher thermal shock stability. In addition, the heat insulation material is alumina silicate fibrofelt which has greater heat insulation property so that the surface temperature can be controlled within 100 DEG. C. The utility model is convenient and simple to construct and has good overall performance. Bricks in the chute are meshed integrally so that the service life can be guaranteed effectively with expected service life of more than 10 years excluding external mechanical forces.

Description

A kind of dry coke quenching dedusting ash discharge is with two fork chutes

Technical field

The utility model belongs to the coke dry quenching furnace in the steel industry coking production, refers to that particularly a kind of coke dry quenching furnace one-time dedusting is with two fork chutes.

Background technology

Dry coke quenching technology is for traditional wet is handled red burnt technology; Be to use rare gas element the coke of red heat is cooled off and discharges coke at coke dry quenching furnace; After the heat exchange rare gas element after first dedusting in boiler with the de-mineralized water heat exchange; Produce steam, the process of recycle under the suction of final dusting at recirculation blower.Dry coke quenching technology becomes the technology that clearly must adopt in the Chinese coking industry permit standard because it has advantages such as the energy of recovery, protection environment, raising coke quality.

One-time dedusting is in order to remove the coarse particles coke powder in the recycle gas, to prevent the wearing and tearing of recycle gas to system device and pipeline thereof, the protection generator tube in the coke dry quenching furnace.Through every cube of recycle gas dustiness is about 10g behind the one-time dedusting, its principle of work is a gravitational dust collection.

Two fork chutes of coke dry quenching furnace disposable dust remover just are being " eight " word and " eight " word intersection is trapezoidal, and the bottom connects the interior coke powder temperature of water cold sleeve fork-shaped chute about 850 ℃, are cooled to discharge below 200 ℃ through the temperature of water jacket with coke powder.Under the effect of recirculation blower, recycle gas is flow at high speed in coke dry quenching furnace, drives coke powder particle high speed rotating in the fork-shaped chute of disposable dust remover, produces powerful frictional force.The inner-wall surface of existing two fork chutes adopts two-layer refractory casting material to come heat insulating, earlier in the thick mould material of internal layer spraying 30mm, again in the thick mould material of skin spraying 70mm.In use, this fork-shaped chute ubiquity inner lining material comes off, burns phenomenon, brings great difficulty for the steady running of coke dry quenching furnace.Service condition shows, at the initial stage of going into operation, because the washing away and the effect of heat exchange of high-temperature coke powder particles in two fork chutes, the refractory castable of two fork chute inner-wall sprayings begins to come off, peel off, and outside steel plate is crumpled, burns by roasting.Because this zone is a negative pressuren zone; A large amount of air cause fork-shaped chute interior temperature to rise suddenly from burning or causing the coke powder burning because of being out of shape in the weld position entering dry coke quenching recycle system of being drawn back, and form vicious cycle; Though add the entering that Plate Steel can temporarily remedy air; But can not resist washing away of coke powder, and add the engineering that Plate Steel itself is a time-consuming expense material, and also can not get work-ing life guaranteeing.

The method that the producer that has adopts Г shape stainless steel hook to inlay clay brick is built the inwall working lining by laying bricks or stones; Though help improving the work-ing life of two fork chutes; But construction is complicated, is equipped with a Г shape stainless steel hook not only will for each piece clay brick, is hooked in the groove that processing is fit on the clay brick also will for Г shape stainless steel; And, also very high to the size precision and the total quality requirement of clay brick; Asynchronous in the use because of the expansion of clay brick and Г shape stainless steel hook, cause fragment of brick to come off easily, cause local damage.

The utility model content

The purpose of the utility model exactly in order to solve the problem that exists in the above-mentioned prior art, provides a kind of dry coke quenching dedusting ash discharge with two fork chutes.

In order to achieve the above object, the utility model adopts following technical scheme: a kind of dry coke quenching dedusting ash discharge is with two fork chutes, and building on the inwall of said pair of fork chute has brick, is stitched together between the adjacent bricks.

Preferably, just face and two of " eight " font are falling the face of " eight " font and are being spliced the inwall of said pair of fork chute by two.

Preferably, on the steel plate of said pair of fork chute, be provided with thermal insulation layer.

Preferably, said thermal insulation layer has scalability.

Preferably, said thermal insulation layer is an alumina silicate fiber felt.

Preferably, said brick adopts NMFS-40 type mullite brick.

The beneficial effect of the utility model is: the utility model adopts brick to build the inwall of two fork chutes by laying bricks or stones, again because wear resistance that brick itself has and higher thermal shock resistance, can effectively resist the influence with heat exchange of washing away of high-temperature coke powder particles; In addition, lagging material adopts the alumina silicate fiber felt with fabulous heat-insulating property, and surface temperature can be controlled in 100 ℃; And easy construction is simple; Overall performance is good, and each the piece brick in the chute is meshing with each other into an integral body, and the life-span is effectively guaranteed; Under the situation that does not receive mechanical external force, predicted life is more than 10 years.

Description of drawings

Fig. 1 is the structural representation of a kind of embodiment of the utility model;

Fig. 2 is that A is to view;

Fig. 3 is that B is to view;

Fig. 4 is that D is to view.

Embodiment

Describe below in conjunction with the preferred embodiment of accompanying drawing, should be appreciated that preferred embodiment described herein only is used for explanation and explains the utility model, and be not used in qualification the utility model the utility model.

A kind of dry coke quenching dedusting ash discharge is with two fork chutes, and building on the inwall of two fork chutes has brick, is stitched together between the adjacent bricks.

The inwall of two fork chutes of the utility model by two just face and two of " eight " font fall the face of " eight " font and be spliced, so the brick on the inwall just will be built into " eight " font equally and fall " eight " font.

The steel plate of two fork chutes of the utility model is provided with thermal insulation layer, can be good at the control surface temperature, and preferably this thermal insulation layer is selected compressible material for use, is specially alumina silicate fiber felt, can be surface temperature control in 100 ℃.

The brick of the utility model adopts NMFS-40 type mullite brick, and adopting the model of brick is 8 ~ No. 20 modular tiles, and NMFS-40 has good wear resistance and higher thermal shock resistance, effectively resists the influence with heat exchange of washing away of high-temperature coke powder particles.

Be depicted as a kind of embodiment of the utility model like Fig. 1-4, the anchoring piece complete liquidation that two fork chutes have is fallen, card attaches the thick alumina silicate fiber felt of one deck 40mm on steel plate; Build the thick 8 ~ 20# modular tile of 70mm by laying bricks or stones falling " eight " font sidewall; Just " eight " font sidewall is the basis by the masonry of 8 ~ No. 20 modular tiles, builds 3,4, No. 5 thick modular tiles of 70mm by laying bricks or stones, because replacing of 8 ~ No. 20 composite brick masonries, can fall under situation about need not link up with yet.The bottom ash output hole is with thick 1, No. 2 brick combination of 150mm; Midfeather is 6, No. 7 bricks.

What should explain at last is: the above is merely the embodiment of explanation the utility model; Be not limited to the utility model; For a person skilled in the art; All within the spirit and principle of the utility model, any modification of being done, be equal to replacement, improvement etc., all should be included within the protection domain of the utility model.

Claims

1. a dry coke quenching dedusting ash discharge is characterized in that with two fork chutes: building on the inwall of said pair of fork chute has brick, is stitched together between the adjacent bricks.

2. a kind of dry coke quenching dedusting ash discharge according to claim 1 is characterized in that with two fork chutes: just face and two of " eight " font are falling the face of " eight " font and are being spliced the inwall of said pair of fork chute by two.

3. a kind of dry coke quenching dedusting ash discharge according to claim 1 and 2 is characterized in that: on the steel plate of said pair of fork chute, be provided with thermal insulation layer with two fork chutes.

4. a kind of dry coke quenching dedusting ash discharge according to claim 3 is with two fork chutes, and it is characterized in that: said thermal insulation layer has scalability.

5. a kind of dry coke quenching dedusting ash discharge according to claim 4 is with two fork chutes, and it is characterized in that: said thermal insulation layer is an alumina silicate fiber felt.

6. a kind of dry coke quenching dedusting ash discharge according to claim 1 and 2 is characterized in that with two fork chutes: said brick adopts NMFS-40 type mullite brick.