CN105561789A

CN105561789A - Method for preventing ash blockage of reactor elbow in semi-dry sintering flue gas desulfurization process

Info

Publication number: CN105561789A
Application number: CN201510973521.XA
Authority: CN
Inventors: 左广传; 刘国生; 刘国友; 朱利; 李志毅; 李志�; 王君
Original assignee: Qinhuangdao Shouqin Metal Materials Co Ltd
Current assignee: Qinhuangdao Shouqin Metal Materials Co Ltd
Priority date: 2015-12-22
Filing date: 2015-12-22
Publication date: 2016-05-11

Abstract

The invention discloses a method for preventing ash blockage of a reactor elbow in a semi-dry sintering flue gas desulfurization process and belongs to the technical field of special working condition treatment of the reactor elbow in the semi-dry sintering flue gas desulfurization process. The method includes: mounting a purging device which directly blows white ash deposited in the reactor elbow through compressed air and sucks the white ash to a dedusting box through suction force of an induced draft fan for recycling. The method has the advantage that the circumstance that ash falling to the ground after the reactor elbow is blocked due to accumulated ash floats everywhere, pollutes environment and is difficult to clean and collect is avoided.

Description

The method of the anti-blocking ash of sinter fume semi-dry desulfurizing process reactor elbow

Technical field

The invention belongs to sinter fume semi-dry desulfurizing process reactor elbow special operation condition processing technology field, the particularly method of the anti-blocking ash of a kind of sinter fume semi-dry desulfurizing process reactor elbow.

Background technology

In sinter fume semidry process sweetening process, lime recycles in reactor elbow and casing, lime bulk density 0.5 ~ 0.8t/m ³, lime internal circulating load is 2 ~ 3t/h, and the gravitation of air-introduced machine mainly wanted by lime, is inhaled into casing, then recycles through digester.In reactor and dust collector box body, ash quantity load exceedes to a certain degree or air-introduced machine suction pop-off, causes the whole limes in reactor elbow all to deposit to reactor elbow under gravity.Meanwhile, across casing between reactor elbow and air-introduced machine, distant, cannot casing be sucked after lime deposition, cause elbow to be blocked by lime.Reactor elbow bottom can only be opened, let-down ground ash, lime density is little, be floating ash entirely, float in the air everywhere, not only contaminated environment, and cleaning, collect very difficult.

Summary of the invention

The object of the present invention is to provide the method for the anti-blocking ash of a kind of sinter fume semi-dry desulfurizing process reactor elbow, solve the problem that lime that reactor and dust collector box body ash quantity cause greatly deposits to reactor elbow blocking elbow.

Sinter a method for the anti-blocking ash of semi-dry desulfurizing process reactor elbow, concrete steps and parameter as follows:

1, install blow device 2 at reactor 1 elbow, blow device 2 comprises magnetic valve 7 and compress wind pipeline 8.Compress wind pipeline 8 diameter 20 ~ 30mm, compress wind pressure 0.3 ~ 0.6MPa, compress wind pipeline 8 is uniformly distributed in an arm intercalation reaction device 1 every 0.5 ~ 0.6 meter, and arm setting angle is downward 30 ~ 45 ° of level.Each arm correspondence installs a magnetic valve 7, and compress wind carries out Long-distance Control by magnetic valve 7.Lime digester 3 is on the opposite of blow device 2, and dust-removing box 4, above lime digester 3, is connected with dust-removing box 4 on the left of air-introduced machine 5, and right side is connected with chimney 6.

2, after blow device 2 is installed, the lime that reactor 1 elbow deposits directly is blown by compress wind, it is made to kick up in reactor 1, air-introduced machine 5 gate is left to 60 ~ 70% simultaneously, rely on air-introduced machine 5 suction that the lime that reactor 1 elbow is kicked up is drawn to dust-removing box 4, re-start after reactor 1 elbow dust stratification enters dust-removing box 4 and recycle.

The invention has the advantages that: use high-pressure blowing device to be kicked up by reactor elbow dust stratification when sintering semi-dry desulfurizing process reactor elbow and stifled ash occurring, by air-introduced machine suction, reactor dust stratification is sucked dust-removing box again to recycle, avoid after the blocking of reactor elbow dust stratification after let-down ground ash, the situation that difficulty is collected in free-and-easy, contaminated environment, cleaning everywhere occurs.

Accompanying drawing explanation

Fig. 1 is sinter fume semi-dry desulfurizing process flow chart and blow device scheme of installation.Wherein, reactor 1, blow device 2, lime digester 3, dust-removing box 4, air-introduced machine 5, chimney 6.

Fig. 2 is blow device structural representation.Wherein, compression valve 7, compress wind pipeline 8.

Detailed description of the invention

Embodiment 1

First blow device 2 is arranged on reactor 1 elbow, installation site is with reference to figure mono-.Wherein compress wind pipeline pipeline 8 diameter 20mm, compress wind pressure 0.3MPa.Compress wind pipeline 8 has in an arm intercalation reaction device 1 every 0.5 meter, and arm setting angle is downward 45 ° of level.Each arm installs a magnetic valve 7, and compress wind carries out Long-distance Control by magnetic valve 7.During the blocking of reactor 1 elbow generation dust stratification, the magnetic valve 7 on compress wind arm is opened by Long-distance Control, reactor 1 elbow deposition lime is directly blown by compress wind, it is made to kick up in reactor 1, air-introduced machine 5 gate is left to 70% simultaneously, rely on air-introduced machine 5 suction that the lime that reactor 1 elbow is kicked up is drawn to dust-removing box 4, re-start after reactor 1 elbow dust stratification enters dust-removing box 4 and recycle.

Claims

1. sinter a method for the anti-blocking ash of semi-dry desulfurizing process reactor elbow, it is characterized in that, concrete steps and parameter as follows:

1) install blow device (2) at reactor (1) elbow, blow device (2) comprises magnetic valve (7) and compress wind pipeline (8); Compress wind pressure 0.3 ~ 0.6MPa, compress wind pipeline (8) is uniformly distributed in an arm intercalation reaction device (1) every 0.5 ~ 0.6 meter, arm setting angle is downward 30 ~ 45 ° of level, each arm correspondence installs a magnetic valve (7), and compress wind carries out Long-distance Control by magnetic valve (7); Lime digester (3) is on the opposite of blow device (2), dust-removing box (4) is in lime digester (3) top, air-introduced machine (5) left side is connected with dust-removing box (4), and right side is connected with chimney (6);

2) after blow device (2) is installed, the lime that reactor (1) elbow deposits directly is blown by compress wind, it is made to kick up in reactor (1), air-introduced machine (5) gate is left to 60 ~ 70% simultaneously, rely on air-introduced machine (5) suction that the lime that reactor (1) elbow is kicked up is drawn to dust-removing box (4), reactor (1) elbow dust stratification re-starts after entering dust-removing box (4) and recycles.

2. method according to claim 1, is characterized in that, described step 1) described in compress wind pipeline (8) diameter be 20 ~ 30mm.