CN101979463A - Clean heat reclamation tamping type coke furnace - Google Patents

Abstract

The invention discloses a clean heat reclamation tamping type coke furnace. The coke furnace consists of a furnace bottom (7), a furnace top (3), carbonization chambers (1), partition walls (2), a flue (4), an ascending fire passage (10), a descending fire passage (11), a primary air inlet (8), a secondary air inlet (9), a secondary air passage (5) and a cooling passage (6). The coke furnace is characterized in that: the coke furnace at least consists of three carbonization chambers (1) connected in series, a partition wall (2) is arranged between every two carbonization chambers (1), a vertical fire passage is formed in the partition wall (2), the vertical fire passage is divided into the descending fire passages (11, 12, 13) and the ascending fire passage (10), and each carbonization chamber is connected with the flue (4) at the bottom of the carbonization chamber (1) and the flue (4) at the bottom of the adjacent carbonization chamber through the descending fire passages (11, 12, 13). The coke furnace has the advantages of shortening the coking time, improving the production efficiency of the coke furnace, reasonably using the energy and effectively avoiding high-temperature accidents by changing the connecting mode of the descending fire passages.

Description

A kind of clean type heat recovery tamping type coke oven

Technical field

The present invention is a kind of integrative cokery that hot charging heat goes out waste heat recovery that is used for.

Background technology

Coke is one of steel industry basic material, and traditional pit kiln is the horizontal cokery, the rough work of coking chamber malleation, its maximum shortcoming is seriously polluted, though taked multinomial pollution treatment measure, but contaminated solution problem fully, so the development of new substitute technology is all attempted by each state.

The free of contamination coking process that abroad begins one's study the 1980s, a kind of novel pit kiln begins to put into production, Here it is clean type heat recovery coke oven, with the maximum difference of traditional cokery be perfect combustion in its negative-pressure operation, the fugitive constituent stove.This has just been avoided the loss of obnoxious flavour, has protected environment.

China developed heat recovery coke oven in nineteen nineties, though starting is a little later, the very fast leading superiority that obtained in the world, multinomial technology all are initiative, as: the hydraulic pressure tamping technology; Flush burnt technology etc.Because its spatter property, short this during the decade coke oven has just been obtained huge development and has been gone to the world in China, especially in the relatively more responsive area of environment.

Present heat recovery coke oven mainly is made up of coking chamber, flue, rising quirk, decline quirk, blast inlet and secondary air mouth.The decline quirk only links to each other with the flue of this coking chamber.

The combustiblesubstance of heat recovery coke oven will carry out twice combustion in body of heater, once be the top at coking chamber, and another time is in the flue of coking chamber bottom, provides the briquette coking needed heat by the heat that this twice combustion produced.The heat that coking needs approximately is half of the combustiblesubstance heat that perfect combustion produces that produces of its briquette self.If these heats can heat briquette equably, the coking time of heat recovery coke oven will shorten greatly.But the fugitive constituent that produces in the briquette is maximum mid-term in coking, and early stage and later stage are less.Existing heat recovery coke oven is emitted a large amount of combustiblesubstances at coking briquette in mid-term, owing to be subjected to the restriction of refractory materials heatproof, these combustiblematerialss can not fall in perfect combustion, superfluous combustiblematerials need burn in the flue outside body of heater for the third time, and the later stage is owing to the minimizing of volatile matter, coking institute heat requirement wretched insufficiency, therefore the later stage coking time is longer, increase the scaling loss of coke, reduced the output of coke, increased thermal losses.

Summary of the invention

The purpose of this invention is to provide a kind of coking time that shortens existing heat recovery coke oven effectively, improve the clean type heat recovery coke oven of the production efficiency of coke oven.

Purpose of the present invention realizes that like this prior art is that the decline quirk only links to each other with the flue of this coking chamber bottom, and the present invention links to each other the flue of quirk with adjacent coking chamber bottom that partly descend.This sample coking chamber is in coking during mid-term, adjacent coking chamber is in coking initial stage or latter stage, the unnecessary combustiblematerials that this coking chamber can't perfect combustion falls is sent into adjacent coking chamber bottom flue internal combustion, and the heat that burning is produced offers adjacent coking chamber briquette coking and uses.This coking chamber is when coking initial stage and latter stage, adjacent coking chamber is in coking mid-term, the unnecessary combustiblematerials that adjacent coking chamber can't perfect combustion falls is introduced the flue internal combustion of this oven carbonization chamber bottom, thereby for this furnace coking initial stage or latter stage providing coking required heat.This has just shortened each coking chamber coking time of full stove greatly, and has reduced intensity of combustion three times, localized hyperthermia's accident that might cause in effuser when having avoided three burnings effectively.

Clean type heat reclamation coke furnace of the present invention, it is by furnace bottom, coking chamber, furnace roof, partition wall, flue, rising quirk, decline quirk, blast inlet, secondary air mouth, secondary air road and a cooling duct are formed, it is characterized in that being formed in parallel by three coking chambers at least, be provided with partition wall between the coking chamber in twos, in partition wall, be provided with perpendicular quirk, perpendicular quirk divides decline quirk and rising quirk, by the decline quirk flue of each coking chamber and this coking chamber bottom and the flue of adjacent coking chamber bottom is linked.

This coking chamber links with the flue of adjacent coking chamber bottom.

Described rising quirk upper end links to each other with effuser, and rising quirk lower end links to each other with the flue of coking chamber bottom;

Described decline quirk mode of connection is divided into two kinds:

First kind for the upper end of decline quirk links to each other with this coking chamber, and the lower end links to each other with the flue of this coking chamber bottom, is called decline quirk A, and the upper end of decline quirk links to each other with this coking chamber left side, and the flue left side of the lower end of decline quirk bottom this coking chamber links to each other; The upper end of decline quirk links to each other with this coking chamber right side, the flue right side of the lower end of decline quirk and this coking chamber bottom two kinds of forms that link to each other.

Second kind links to each other with this coking chamber for the upper end of decline quirk, the lower end links to each other with the flue of adjacent coking chamber bottom, be divided into two kinds of forms of B and C, B is that the upper end of decline quirk links to each other with this coking chamber left side, the lower end links to each other with the flue right side of adjacent coking chamber bottom, C is that the upper end of decline quirk links to each other with this coking chamber right side, and the lower end of decline quirk links to each other with the flue left side of adjacent coking chamber bottom.

Following condition is satisfied in described decline quirk and the distribution of rising quirk in each partition wall:

M≥4，N≥2，N+2≤M，M-N＞P≥0，Q+R≥1，P+Q+R＝M-N；

Wherein M is perpendicular quirk quantity, the quantity sum of promptly descend quirk and rising quirk, and N is a rising quirk quantity, and P is the quantity of decline quirk A, and Q is the quantity of decline quirk B, and R is the quantity of decline quirk C.

The present invention uses like this, in coking initial stage and/or latter stage adjacent stove is in coking mid-term, the combustiblematerials that can't perfect combustion falls is introduced the flue internal combustion of this oven carbonization chamber bottom, thereby for this furnace coking initial stage and/or latter stage providing coking required heat, in coking mid-term the combustiblematerials that this stove can't perfect combustion falls is sent into adjacent coking chamber bottom flue, for being in, adjacent coking chamber provides heat in coking initial stage and latter stage, this has just shortened each coking chamber coking time of coke oven greatly, and reduced intensity of combustion three times, localized hyperthermia's accident that might in effuser, cause when having avoided three burnings effectively.

Characteristics of the present invention:

1, by changing decline quirk mode of connection, shortens coking time, improved the production efficiency of coke oven

2, rationally use the energy, avoided the high temperature accident effectively

Description of drawings

Fig. 1 is the coke oven vertical planning drawing

Fig. 2 is the sectional drawing of coke oven partition wall;

Fig. 3 is the A-A rising quirk sectional view of Fig. 2;

Fig. 4 is that the upper end of decline quirk among Fig. 2 links to each other with this coking chamber left side, the flue left side of the lower end of decline quirk and this coking chamber bottom B-B sectional view that links to each other;

Fig. 5 is that the upper end of decline quirk among Fig. 2 links to each other with this coking chamber right side, the flue right side of the lower end of decline quirk and this coking chamber bottom C-C sectional view that links to each other;

Fig. 6 is the descend D-D sectional view of quirk C of Fig. 2;

Fig. 7 is the descend E-E sectional view of quirk B of Fig. 2;

As shown in the figure: 1 is coking chamber, and 2 is partition wall, and 3 is furnace roof, and 4 is flue, and 5 is the secondary air road, 6 is cooling duct, and 7 is furnace bottom, and 8 is the primary air import, and 9 is the secondary air import, 10 are the rising quirk, and 11 are decline quirk A, and 12 are decline quirk C, and 13 are decline quirk B.

Embodiment

Embodiment 1

Clean type heat reclamation coke furnace is by furnace bottom 7, furnace roof 3, coking chamber 1, partition wall 2, flue 4, rising quirk 10, decline quirk 11, a blast inlet 8, secondary air mouth 9, secondary air road 5 and cooling duct 6 are formed, it is characterized in that being formed in parallel by three coking chambers 1 at least, be provided with partition wall 2 between the coking chamber 1 in twos, in partition wall 2, be provided with perpendicular quirk, perpendicular quirk divides decline quirk 11,12,13 and rising quirk 10, and rising quirk 10 upper ends link to each other with effuser, and rising quirk 10 lower ends link to each other with the flue 4 of coking chamber 1 bottom; The upper end of decline quirk 11 links to each other with this coking chamber 1, the lower end links to each other with the flue 4 of this coking chamber 1 bottom, be called decline quirk A, the upper end of decline quirk 11 links to each other with this coking chamber 1 left side, and the lower end of decline quirk 11 links to each other with flue 4 left sides of this coking chamber 1 bottom; The upper end of decline quirk 11 links to each other with this coking chamber 1 right side, the lower end of the decline quirk 11 two kinds of forms that link to each other with flue 4 right sides of this coking chamber 1 bottom.

The upper end of decline quirk 12,13 links to each other with this coking chamber 1, the lower end links to each other with the flue 4 of adjacent coking chamber bottom, be divided into two kinds of forms of B and C, B is that the upper end of decline quirk 13 links to each other with this coking chamber 1 left side, the lower end links to each other with flue 4 right sides of adjacent coking chamber bottom, C is that the upper end of decline quirk 12 links to each other with this coking chamber 1 right side, and the lower end links to each other with flue 4 left sides of adjacent coking chamber bottom.

The quirk that wherein rises is 2, and the decline quirk A that links to each other with the flue of this coking chamber bottom is 0, and decline quirk B is 1, and decline quirk C is 1.

Embodiment 2

The rising quirk is 8, and decline quirk A is 12, and decline quirk B is 4, and decline quirk C is 4.All the other are with embodiment 1.

Embodiment 3

The rising quirk is 16, and decline quirk A is 20, and decline quirk B is 8, and decline quirk C is 8.All the other are with embodiment 1.

Claims (4)

1. clean type heat recovery tamping type coke oven, it is by furnace bottom (7), furnace roof (3), coking chamber (1), partition wall (2), flue (4), rising quirk (10), decline quirk (11), a blast inlet (8), secondary air mouth (9), secondary air road (5) and cooling duct (6) are formed, it is characterized in that being formed in parallel by three coking chambers (1) at least, be provided with partition wall (2) between the coking chamber (1) in twos, in partition wall (2), be provided with perpendicular quirk, perpendicular quirk divides decline quirk (11,12,13) and rising quirk (10), by decline quirk (11,12,13) each coking chamber (1) and the flue (4) of this coking chamber (1) bottom and the flue (4) of adjacent coking chamber bottom are linked.

2. a kind of clean type heat recovery tamping type coke oven as claimed in claim 1 is characterized in that described rising quirk (10) upper end links to each other with effuser, and rising quirk (10) lower end links to each other with the flue (4) of this coking chamber (1) bottom.

3. a kind of clean type heat recovery tamping type coke oven as claimed in claim 1 is characterized in that described decline quirk mode of connection is divided into two kinds:

First kind links to each other with this coking chamber (1) for the upper end of decline quirk (11), the lower end links to each other with the flue (4) of this coking chamber (1) bottom, be called decline quirk A, the upper end of decline quirk (11) links to each other with this coking chamber (1) left side, and the lower end of decline quirk (11) links to each other with flue (4) left side of this coking chamber (1) bottom; The upper end of decline quirk (11) links to each other with this coking chamber (1) right side, flue (4) right side of the lower end of decline quirk (11) and this coking chamber (1) bottom two kinds of forms that link to each other.

Second kind links to each other with this coking chamber (1) for the upper end of decline quirk (12,13), the lower end links to each other with the flue (4) of adjacent coking chamber bottom, be divided into two kinds of forms of B and C, B is that the upper end of decline quirk (13) links to each other with this coking chamber (1) left side, the lower end links to each other with flue (4) right side of adjacent coking chamber bottom, C is that the upper end of decline quirk (12) links to each other with this coking chamber (1) right side, and the lower end links to each other with flue (4) left side of adjacent coking chamber bottom.

4. a kind of clean type heat recovery tamping type coke oven as claimed in claim 1 is characterized in that described decline quirk (11,12,13) and the distribution of rising quirk (10) in partition wall satisfy following condition:

M≥4，N≥2，N+2≤M，M-N＞P≥0，Q+R≥1，P+Q+R＝M-N；

Wherein M is perpendicular quirk quantity, the quantity sum of promptly descend quirk and rising quirk, and N is a rising quirk quantity, and P is the quantity of decline quirk A, and Q is the quantity of decline quirk B, and R is the quantity of decline quirk C.

Images