CN103134327B

CN103134327B - Method of opening type roasting filling material filling

Info

Publication number: CN103134327B
Application number: CN201110373075.0A
Authority: CN
Inventors: 刘朝东; 崔银河; 周善红; 许海飞; 王敏
Original assignee: Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
Current assignee: Shenyang Aluminum and Magnesium Engineering and Research Institute Co Ltd
Priority date: 2011-11-22
Filing date: 2011-11-22
Publication date: 2014-10-29
Anticipated expiration: 2031-11-22
Also published as: CN103134327A

Abstract

The invention relates to a method of filling material filling, in particular to a method of opening type roasting filling material filling used for a carbon industry. An area with a standing seam in a fire way wall is filled by the filling material with a regular granularity. An area without a standing seam of the fire way wall on the upper portion of a material box is filled by a layer of fine filling materials and the fine filling materials are concentratedly to be operated in and out of a furnace. Convenience and feasibility of the operation are guaranteed. The method of the opening type roasting filling material filling has the advantages that the filling materials with different granularities are filled in the upper position and the lower position of the opening type roasting furnace material box, thus the good sealing effect of the material box is achieved. The fact that oil tar and volatile matter in a heating stage of a roasting product which smoothly enter the fire way to burn is guaranteed. A Cold air quantity leaking in the fire way from the material box is reduced. A pre-heating air quantity which enters the material box from the fire way after the roasting product enters the cooling state is reduced. Regular temperature rising speed in the heating stage and cooling speed in the cooling stage of the roasting product are guaranteed. Burning losses of the filling materials in the cooling stage of the roasting product are reduced.

Description

Open roasting furnace inserts packing method

Technical field

The present invention relates to a kind of inserts packing method, relate in particular to the open roasting furnace inserts packing method that a kind of carbon industry is used, make open roasting furnace in inserts filling process, strengthen the sealing of roaster.

Background technology

Open roasting furnace adopts the method for high-temperature flue gas and roasting product indirect to carry out high-temperature roasting to roasting product, high-temperature flue gas passes to roasting product by flue wall and inserts heat, roasting product belongs to negative pressure condition at heating process quirk, the tar that it is separated out and the fugitive constituent vertical seam by the hole in inserts and flue wall enters quirk and burns, and part air also can be from the hopper face quirk that bleeds simultaneously; In roasting product cooling stage quirk, in positive pressure condition, the hole that preheated air can be from inserts and the vertical seam of flue wall blast hopper, cause the oxidization burning loss of inserts.The size of inserts granularity has directly determined porosity and the sealing of hopper, when inserts granularity, crosses when thick, and the porosity of inserts increases, and can bring following problem.

1) in the roasting product heating period, a large amount of cold airs enter quirk, reduce fire path temperature, affect the heating rate of roasting product.

2) at roasting product cooling stage, a large amount of preheated airs enter hopper, with the burning of high temperature inserts, have increased the scaling loss amount of inserts, and roasting product can not cool down in time.

When inserts granularity is thinner, inserts porosity reduces, and can bring following problem:

1) tar can not enter quirk burning smoothly, causes roasting product surface and flue wall hopper face a large amount of inserts that bonds, and occurs inserts caking phenomenon in hopper.

2) meticulous inserts is easily bonded in the vertical seam of flue wall, and the vertical seam of obstruction is unfavorable for that tar and fugitive constituent enter quirk burning smoothly.

3) inserts is thinner, and its thermal resistance effect is larger, affects the heating rate of roasting product.

Summary of the invention

In order to solve the problems of the technologies described above, the invention provides a kind of open roasting furnace inserts packing method, object is to adopt varigrained inserts to load by upper and lower zones of different, guarantee that hopper lower area has enough porositys normally to separate out by tar and fugitive constituent, the thin inserts on top plays a good sealing effectiveness to hopper simultaneously.

For reaching above-mentioned purpose open roasting furnace inserts of the present invention packing method, at flue wall, there is the region of vertical seam to adopt the inserts of normal particle sizes to load, at the not vertical region of stitching of hopper top flue wall, the thin inserts of filling one deck.

Thin inserts is less than 1mm particle mean size.

When flue wall has the region of vertical seam to adopt the inserts of normal particle sizes to load, reserve and do not load inserts apart from the region of boiler face 300 ~ 400mm, after other hopper of this furnace chamber is loaded in the same way, concentrate all hoppers of this furnace chamber are carried out to the filling of thin inserts; When roasting product enters when forcing cooling stage through bringing-up section and cooling section, by the thick thin inserts sucking-off of furnace chamber top 300 ~ 400mm, reinstall the furnace chamber of thin inserts to be installed.

Advantageous effect of the present invention: the method for operating of loading varigrained inserts by the upper and lower position of this open roasting furnace hopper, make hopper reach better sealing effectiveness, can guarantee that roasting product enters quirk burning smoothly at heating period tar and fugitive constituent, minimizing is from the bleed cold air amount of quirk of hopper, can reduce again roasting product and enter the preheated air amount of rousing material feeding box from quirk after cooling section, this has not only guaranteed the normal heating rate in the heating period of roasting product and the cooldown rate of cooling stage, and reduced the scaling loss loss of inserts at roasting product cooling stage.

Accompanying drawing explanation

Fig. 1 is open roasting furnace flame system schematic diagram of the present invention.

Fig. 2 is open roasting furnace hopper inserts shove charge schematic diagram of the present invention.

In Fig. 1 roaster flame system schematic diagram: 1P ~ 3P is roasting product preheating section, 1F ~ 3F is that roasting product is forced bringing-up section, and 1C ~ 4C is roasting product cooling section, and 5C, 6C are that roasting product is forced cooling section.

In Fig. 2 roaster hopper inserts shove charge schematic diagram: H1 section is the thin inserts filling of 300 ~ 400mm region, H2 is normal inserts filling region.

The specific embodiment

Below in conjunction with accompanying drawing, the invention will be further described.

Open roasting furnace inserts packing method of the present invention as shown in the figure, at flue wall, there is the region of vertical seam to adopt the inserts of normal particle sizes to load, in the not vertical region of stitching of hopper top flue wall, the thin inserts of filling one deck, thin inserts is less than 1mm particle mean size.

The method that adopts the filling of different grain size inserts by this upper and lower zones of different, had both guaranteed that hopper lower area had enough porositys normally to separate out by tar and fugitive constituent, and the thin inserts on top plays a good sealing effectiveness to hopper simultaneously.

The thin inserts of roaster mix upper box part filling, than the inserts of normal particle sizes, can play a better sealing effectiveness, reduces the inleakage of hopper.

By thin inserts is concentrated to shove charge and the operation of coming out of the stove, guarantee the convenience that recycles and take on stove Job Operations of thin inserts for hopper sealing.

When entering flame system furnace chamber shove charge operation, in Fig. 2, H2 height flue wall has the inserts of the region filling normal particle sizes of vertical seam, and other hoppers in this furnace chamber are also carried out to shove charge operation by identical mode, all reserve the not region of vertical seam, the finally concentrated shove charge work of carrying out thin inserts of H1 height flue wall on hopper top.

When this furnace chamber is forced bringing-up section through 1P ~ 3P roasting product preheating section, 1F ~ 3F roasting product, thin inserts region can stop outside cold air to enter quirk, temperature in assurance quirk and the heating rate of roasting product, when entering 1C ~ 4C roasting product cooling section, can stop the preheated air in quirk to blast hopper, reduce the scaling loss amount of inserts, within these stages, thin inserts can play a good sealing effectiveness.

When entering 5C-6C roasting product, forces after cooling section this furnace chamber, the thin inserts filling area that the thin inserts sucking-off in H1 region, hopper top is packed into flame system furnace chamber to be entered, reach like this effect that recycles thin inserts, reduce the cladding thickness of forcing the inserts in cooling section hopper simultaneously, accelerated the cooling velocity of roasting product.

Claims

1. open roasting furnace inserts packing method, is characterized in that having the region of vertical seam to adopt the inserts of normal particle sizes to load at roaster mix lower box part flue wall, at the not vertical region of stitching of hopper top flue wall, the thin inserts of filling one deck; The reserved region apart from boiler face 300 ~ 400mm when flue wall has the region of vertical seam to adopt the inserts of normal particle sizes to load, be that hopper top flue wall does not load inserts in the region of vertical seam, after other hopper of this furnace chamber is loaded in the same way, concentrate all hoppers of this furnace chamber top flue wall is not carried out to the filling of thin inserts in the region of vertical seam; When roasting product enters when forcing cooling stage through bringing-up section and cooling section, by the thick thin inserts sucking-off of furnace chamber top 300 ~ 400mm, then concentrate the furnace chamber that packs thin inserts to be installed into.

2. open roasting furnace inserts packing method according to claim 1, is characterized in that thin inserts particle mean size is less than 1mm.

3. open roasting furnace inserts packing method according to claim 1, it is characterized in that roaster mix lower box part flue wall has the region of vertical seam to adopt the inserts of normal particle sizes to load, the tar that assurance roasting product is separated out in heating process like this and fugitive constituent can enter smoothly quirk and burn, the thin inserts of hopper top filling is simultaneously at preheating section and force bringing-up section can stop outside cold air to enter quirk, improve the heat-insulating property of hopper, and can stop the preheated air in quirk to blast hopper at roasting product cooling stage, reduce the scaling loss amount of inserts.