CN203668243U

CN203668243U - Reversing damper of double-chamber lime kiln body

Info

Publication number: CN203668243U
Application number: CN201320547005.7U
Authority: CN
Inventors: 谢永红; 闫艳芬
Original assignee: Individual
Current assignee: Shijiazhuang Xinhua Energy Environmental Protection Technology Co Ltd
Priority date: 2013-09-04
Filing date: 2013-09-04
Publication date: 2014-06-25
Anticipated expiration: 2023-09-04

Abstract

A novel reversing damperassembly of a double-chamber lime kiln body comprises a reversing damper (Z1), a No.1 chamber damper (Z2) and a No.2 chamber damper (Z3), wherein the reversing damper (Z1) is installed among a combustion-supporting wind main pipe, a first kiln chamber (SH1) and a second kiln chamber (SH2) and used for controlling combustion-supporting wind to be led to the two kiln chambers; the No.1 chamber damper (Z2) and the No.2 chamber damper are installed among the first kiln chamber (SH1), the second kiln chamber (SH2) and a dust collector and used for controlling gases to be led to the dust collector. The three dampers are matched for use, so that the combustion-supporting wind for lime kilning by a lime kiln enters the kiln chambers, and exhaust gases produced by lime kilning are discharged out of the kiln chambers. The reversing damper assembly has the benefits as follows: (1) reliable sealing of the reversing damper is guaranteed; (2) workloads of equipment such as the dampers, hydraulic cylinders and the like are reduced, the maintenance cost of the equipment is reduced, and the service life of the equipment is prolonged; and (3) the product quality is not affected any more.

Description

A kind of commutation flashboard of double-hearth lime kiln kiln body

Technical field:

The utility model relates to a kind of equipment of double-hearth lime kiln kiln body commutation flashboard.

Background technology:

Commutation flashboard is that double-hearth lime kiln is realized the key equipment of producing, and the degree direct influence of its reliability service is to operation conditions and the quality product of kiln body.The commutation flashboard combination of current double-hearth lime kiln is made up of 2 concrete flashboards.Flashboard is by Driven by Hydraulic Cylinder action and maintaining condition position.In the time of perpendicular position, flashboard both sides pressure reduction is between 32-45KPa, and huge pressure reduction causes flashboard vibration, produces gas leakage, seriously shortens the work-ing life of flashboard and hydro-cylinder, causes the pressure system of kiln body to get muddled simultaneously, affects quality product.

Summary of the invention:

In order to overcome the deficiency occurring in current commutation flashboard use, the utility model has been designed a kind of novel commutation flashboard combination.This commutation flashboard combination can not only guarantee the normal commutation function of kiln body, can also eliminate the negative effect that flashboard both sides pressure reduction causes, and improves the sealing effectiveness of commutation flashboard, the work-ing life of prolongation commutation flashboard.

The utility model solves this technical problem taked technical scheme:

The combination of a kind of novel double-hearth lime kiln kiln body commutation flashboard.Comprise commutation flashboard (Z1), No. 1 thorax flashboard (Z2) and No. 2 thorax flashboards (Z3), commutation flashboard (Z1) is arranged in the middle of combustion air supervisor, the first kiln thorax (SH1) and the second kiln thorax (SH2), leads to two kiln thoraxes for controlling combustion air; No. 1 thorax flashboard (Z2), No. 2 thorax flashboards are arranged between the first kiln thorax (SH1), the second kiln thorax (SH2) and fly-ash separator, lead to fly-ash separator for controlling gas.3 flashboards are used in conjunction with, and realize limestone kiln lime kilning combustion air and enter the waste gas discharge kiln thorax of kiln thorax, lime kilning generation.

Flashboard for combustion air (Z1) has two mode bits, No. 1 thorax mode bit and No. 2 thorax mode bits: when at No. 1 thorax mode bit, flashboard is on right side, and combustion air feeds the first kiln thorax (SH1); When at No. 2 thorax mode bits, flashboard is in left side, and combustion air feeds the second kiln thorax (SH2).

No. 1 thorax flashboard (Z2), No. 2 thorax flashboards (Z3) respectively have 1 mode bit and 1 nature position: mode bit is flashboard level, and nature position is that flashboard is vertical, has controlled the gas that leads to fly-ash separator.

Beneficial effect:

(1) the flashboard positiver sealing of guaranteeing to commutate;

(2) reduce the working load of the equipment such as flashboard, hydro-cylinder, reduce equipment maintenance cost, the work-ing life of extension device;

(3) no longer affect quality product.

Accompanying drawing explanation:

Figure of description has shown the state graph of flashboard at each time point that commutate aborning.

Fig. 1 is No. 1 thorax calcining figure;

Fig. 2 is figure during commutating.

Fig. 3 is No. 2 thorax calcining figure.

Fig. 4 is for stopping kiln state graph.

Embodiment:

(1) hardware aspect:

Refer to " Figure of description ", hardware comprises: No. 1, No. 2 two kiln thorax arms: the first kiln thorax SH1, the second kiln thorax SH2; Combustion air pipeline and combustion air supply; Dust-removal system: exhaust pipeline; 3 commutation flashboards: commutation flashboard Z1, No. 1 thorax flashboard Z2, No. 2 thorax flashboard Z3.

The figure illustrates the flashboard that commutates aborning in the state graph of each time point, have: during No. 1 thorax calcining, commutation, No. 2 thoraxes forge burning, stop kiln state; Shown simultaneously, the air flow direction figure of different time points, dotted line be exhaust flow to, solid line is that combustion air flows to, exhaust gas region is negative pressuren zone, combustion air region is zone of positive pressure.

(2) process description:

Fig. 1: No. 1 thorax calcining:

Combustion air enters thorax No. 1, carries out combustion-supporting.Commutation flashboard Z1, No. 1 thorax flashboard Z2, under the acting in conjunction of the driving of hydro-cylinder, system pressure difference, by dead the sealing of kiln body.No. 2 thorax flashboard Z3 are in off-position.Waste gas is discharged by No. 2 thoraxes, enters in fly-ash separator.

Fig. 2: during commutation:

No. 1 thorax flashboard Z2, No. 2 thorax flashboard Z3 are all in off-position, and the waste gas in two kiln thoraxes directly enters in fly-ash separator.Simultaneously combustion air is no longer emptying, is also directly to enter in fly-ash separator, owing to mixing with waste gas out in kiln thorax, has improved combustion air temperature, and fly-ash separator is played to certain provide protection.

Expansion explanation: coordinate ash cooling character and conduct to do as follows: after the tail-off time finishes, combustion air directly enters in fly-ash separator, simultaneously grey cold wind is not emptying, but continue to feed in kiln thorax to lime carry out cooling, up, be mixed in fly-ash separator by kiln top waste gas outlet and combustion air.In this process, dedusting fan rotating speed is constant.Reduce at 1 o'clock until furnace pressure, draw off lime, commutation, enters the next calcining cycle.

Fig. 3: No. 2 thorax calcinings:

Combustion air enters thorax No. 2, carries out combustion-supporting.Commutation flashboard Z1, No. 2 thorax flashboard Z3, under the acting in conjunction of the driving of hydro-cylinder, system pressure difference, by dead the sealing of kiln body.No. 1 thorax flashboard Z2 is in off-position.Waste gas is discharged by No. 1 thorax, enters in fly-ash separator.

Fig. 4: stop kiln state:

Combustion air stop supplies, No. 1 thorax flashboard Z2, two commutation flashboards of No. 2 thorax flashboard Z3 also quit work.Kiln thorax sodalime stone continues to decompose a small amount of carbonic acid gas producing and enters in exhaust pipeline.Without open in the situation that, at the bottom of kiln, sealing damper, discharging platform manhole, stoke hole etc. are located, all should good seal.

Claims

1. the commutation flashboard of a novel double-hearth lime kiln kiln body, it is characterized in that: comprise commutation flashboard (Z1), No. 1 thorax flashboard (Z2) and No. 2 thorax flashboards (Z3), commutation flashboard (Z1) is arranged in the middle of combustion air supervisor, the first kiln thorax (SH1) and the second kiln thorax (SH2), leads to two kiln thoraxes for controlling combustion air; No. 1 thorax flashboard (Z2), No. 2 thorax flashboards are arranged between the first kiln thorax (SH1), the second kiln thorax (SH2) and fly-ash separator, lead to fly-ash separator for controlling gas.

2. the commutation flashboard of double-hearth lime kiln kiln body according to claim 1, it is characterized in that: flashboard for combustion air (Z1) has two mode bits, No. 1 thorax mode bit and No. 2 thorax mode bits: when at No. 1 thorax mode bit, flashboard is on right side, and combustion air feeds the first kiln thorax (SH1); When at No. 2 thorax mode bits, flashboard is in left side, and combustion air feeds the second kiln thorax (SH2).

3. the commutation flashboard of double-hearth lime kiln kiln body according to claim 1, it is characterized in that: No. 1 thorax flashboard (Z2), No. 2 thorax flashboards (Z3) respectively have 1 mode bit and 1 nature position: mode bit is flashboard level, nature position is that flashboard is vertical, has controlled the gas that leads to fly-ash separator.