CN102241992A - Reconstruction method of 7.63 meter coke oven - Google Patents

Abstract

The invention relates to a reconstruction of a 7.63 meter coke oven. The invention discloses a method for reconstructing the 7.63 meter coke oven, which comprises the following steps: 1) a gunning material is filled into a hopper of a gunning machine; 2) a spray gun of the gunning machine is penetrated into a cross-over hole on an upper part of the 7.63 meter coke oven through a peephole of the 7.63 meter coke oven; 3) the gunning material is sprayed to the cross-over hole on the upper part layer by layer through a spray machine, until the cross-over hole on the upper part of the 7.63 meter coke oven is sealed, and the peephole of the 7.63 meter coke oven is guaranteed unblocking. According to the invention, the furnace roof space temperature of the 7.63 meter coke oven is reduced, and the reconstruction method is capable of solving the problem of abnormal production of the 7.63 meter coke oven and chemical product workshop, improving the production operation state of the 7.63 meter coke oven, raising the economic benefit of the coke plants and prolonging the service life of the 7.63 meter coke oven.

Description

7.63 the remodeling method of rice coke oven

Technical field

The present invention relates to a kind of transformation of 7.63 meters coke ovens, be specifically related to a kind of remodeling method of 7.63 meters coke ovens.

Background technology

At present, 7.63 meters top of coke oven room tempss of the Germany of domestic introduction are higher, and the major cause that produces this problem is that two aspects cause, and the heat levels of 7.63 meters coke ovens of the first is less than normal; It two is that 7.63 meters coke ovens have adopted the technology of " difference heating ".Owing to mutually combining of these two reasons or two reasons causes 7.63 meters top of coke oven room tempss higher.The higher consequence that causes of furnace roof room temps is as follows: 1, furnace roof space product graphite is serious, causes flat coal and coke pushing difficulty; 2, coke oven coke oven uprising tube inner product graphite is many, sometimes even stop up upcast, has a strong impact on the ordinary production of coke oven, causes in the coking technique process furnace roof raw gas to reveal serious; 3, owing to the cracking of the organic compound in the raw gas, causing product workshop subsequent production operational difficulty is changed a large amount of underproduction of recovery product in product workshop simultaneously, influences the economic benefit of coke-oven plant and the direct motion of production.

Summary of the invention

The remodeling method that the purpose of this invention is to provide a kind of 7.63 meters coke ovens, thereby 7.63 meters top of coke oven room tempss have been reduced, solve 7.63 meters coke ovens and changed production abnormal problem in product workshop, improved the production operation state of 7.63 meters coke ovens, improve the economic benefit of coke-oven plant, prolonged the production life-span of 7.63 meters coke ovens.

In order to achieve the above object, the present invention has following technical scheme:

The remodeling method of a kind of 7.63 meters coke ovens of the present invention has following steps:

1) Gunning refractory is packed into the hopper of spray repairing machine;

2) hole is crossed on the top that the spray gun of the spray repairing machine peephole by 7.63 meters coke ovens is entered 7.63 meters coke ovens;

3) with spray repairing machine Gunning refractory is crossed over the hole by spray gun spray repair successively to top, cross over the hole sealing up to the top of 7.63 meters coke ovens, and guarantee that the peephole of 7.63 meters coke ovens is unimpeded.

Wherein, the water content of described Gunning refractory is 12～15%.

Owing to taked above technical scheme, the invention has the advantages that:

Reduce the heated height of flame, 7.63 meters top of coke oven room tempss have promptly been reduced, solve 7.63 meters coke ovens and changed production abnormal problem in product workshop, reduce organic cracking in the waste gas of coke oven, the production operation of guaranteeing 7.63 meters coke ovens is normal, improve the economic benefit of coke-oven plant, prolonged the production life-span of 7.63 meters coke ovens.

Description of drawings

Fig. 1 is the sectional view before 7.63 meters coke ovens are transformed;

Fig. 2 be Figure 1A-A to sectional view;

Fig. 3 is the sectional view in 7.63 meters coke ovens transformations of the present invention;

Fig. 4 be Fig. 3 B-B to sectional view;

Fig. 5 is 7.63 meters improved sectional views of coke oven of the present invention;

Fig. 6 be Fig. 5 C-C to sectional view.

Among the figure: 1, spray repairing machine; 2, spray gun; 3, the hole is crossed on top; 4, the hole is crossed in the bottom; 5,7.63 meters top of coke oven spaces; 6, the peephole of 7.63 meters coke ovens.

Embodiment

Following examples are used to illustrate the present invention, but are not used for limiting the scope of the invention.

Referring to Fig. 1～Fig. 3,7.63 meters top of coke oven space 5 temperature drifts are because hole 3 is crossed on 7.63 meters existing tops of coke oven, have the bottom to cross over hole 4 again, cause 7.63 meters top of coke oven space 5 temperature drifts owing to there is top to cross over hole 3.

The remodeling method of a kind of 7.63 meters coke ovens of the present invention is with pack into the hopper of spray repairing machine 1 of Gunning refractory; The spray gun 2 of spray repairing machine 1 enters into the leap hole 3, top of 7.63 meters coke ovens by the peephole 6 of 7.63 meters coke ovens, Gunning refractory is successively sprayed less than leap hole 3, top, cross over the hole sealing up to the top of 7.63 meters coke ovens, and guarantee that the peephole of 7.63 meters coke ovens is unimpeded.Cross over hole 4 through the only remaining bottom of improved 7.63 meters coke ovens.After tested, can reduce the heated height of flame, reduce by 7.63 meters top of coke oven room tempss.Thereby make 7.63 meters top of coke oven space quantity of graphite few, the inner quantity of graphite of coke oven coke oven uprising tube is few, and the cracking of the organic compound in the raw gas significantly reduces.

The Gunning refractory index:

1, AL2O3+SiO2 content＞90%;

2, granularity: 0-3mm;

3, density: 2.05g/cm3;

4, cold conditions folding strength: N/mm2;

110℃x12h 7.8；

After 1100 ℃ of burnings 6.5;

5, length line velocity of variation %;

110 ℃ of drying＜0.15

1100℃x3h ＜0.45

6, setting time＜70s

7, refractory temperature＞1450 ℃

Spray repairing machine 1 adopts the semi dry gunning machine to carry out the spray repair operation, and requiring the Gunning refractory water content after spray gun 2 outlet regulating is 12～15%.Spray repairing machine 1 of the present invention adopts the BG-25 type semi dry gunning machine of Wuhan Gujiu Science ﹠ Technology Co., Ltd..

The remodeling method of a kind of 7.63 meters coke ovens of the present invention be behind coke oven coke-pusher and coaling before the time space carry out, also can after coke oven coal-charging 2 hours, briquette maturation, carry out.

Simultaneous test: 7.63 meters coke ovens and improved 7.63 meters coke ovens before the present invention will transform under equal conditions, compare result such as following table:

Obviously, the above embodiment of the present invention only is for example of the present invention clearly is described, and is not to be qualification to embodiments of the present invention.For those of ordinary skill in the field, can also make other changes in different forms on the basis of the above description.Here can't give exhaustive to all embodiments.Everyly belong to the row that conspicuous variation that technical scheme of the present invention extends out or change still are in protection scope of the present invention.

Claims (2)

1. the remodeling method of 7.63 meters coke ovens is characterized in that following steps are arranged:

1) Gunning refractory is packed into the hopper of spray repairing machine;

2) hole is crossed on the top that the spray gun of the spray repairing machine peephole by 7.63 meters coke ovens is entered 7.63 meters coke ovens;

3) with spray repairing machine Gunning refractory is crossed over the hole by spray gun spray repair successively to top, cross over the hole sealing up to the top of 7.63 meters coke ovens, and guarantee that the peephole of 7.63 meters coke ovens is unimpeded.

2. the remodeling method of a kind of 7.63 meters coke ovens as claimed in claim 1 is characterized in that: the water content of described Gunning refractory is 12～15%.

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