CN105238421A - Tamping coking method with biomass mixed - Google Patents
Tamping coking method with biomass mixed Download PDFInfo
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- CN105238421A CN105238421A CN201510693310.0A CN201510693310A CN105238421A CN 105238421 A CN105238421 A CN 105238421A CN 201510693310 A CN201510693310 A CN 201510693310A CN 105238421 A CN105238421 A CN 105238421A
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Abstract
The invention discloses a tamping coking method with biomass mixed. The method comprises the steps of crushing dry biomass raw materials, mixing the biomass materials with mixed coal uniformly, wherein the mass of the biomass materials accounts for 0,25-1% of the mass of the mixed coal and the water content of the mixed coal is greater than 10%, then conducting tamping according to conventional practice, obtaining coal cakes, and sending the obtained coal cakes into a coking chamber of a coke oven for conducting coking according to conventional practice. By means of the tamping coking method with the biomass mixed, the phenomena of coal cake peeling and collapsing caused in the production process are greatly reduced, and operation efficiency of coke oven production is effectively improved. After the method is applied to the coke oven, the coal cake peeling and collapsing rate is reduced to below 1% from original over 10%, and the coke oven production operation coefficient K3 is raised to above 90% from previous below 30%.
Description
Technical field
The present invention relates to a kind of tamping coking method allocating biomass into, belong to technical field of coal chemical industry.
Background technology
Bituminous coal, under the condition of isolated air, is heated to 950 ~ 1050 DEG C, and finally support coke through stages such as super-dry, pyrolysis, melting, bonding, solidification, contractions, this process is high-temperature coking.The coke obtained by high-temperature coking is for blast-furnace smelting, casting and gasification.The coke-oven gas after reclaiming, purifying produced in process of coking is high performance fuel, is again important organic synthesis industrial raw material.Other such as pure benzene,toluene,xylene, NAPTHALENE FLAKES. (INDUSTRIAL GRADE） and coal tar wet goods are also important industrial chemicals.
High-temperature coking mainly contains the side-mounted tamping coking that traditional top dress coking by coke oven and last decade start to rise at home at present.Top dress coking by coke oven is the coking mode loose coal coal charger being loaded coking chamber by the hole of coalingging at coke oven top in the mode of gravity.Tamping coking is then make firm by ramming into after volume is slightly less than the briquette of coking chamber by loose coal by tamping machine, to be pushed in coking chamber carry out high temperature carbonization by coal charger from the side of coke oven.Relative to traditional coke oven technique, tamping type coke oven takes the measures such as raw coal premix is made firm by ramming, furnace roof dust-removing vehicle, other slotting fiber bag precipitator, control of dust coke guide and increase fire door stopping property, the pollutant emission in coke production can be made to reduce 75%, and dust removal efficiency reaches more than 90%.This technology can effectively reduce coking coal proportioning, increases coke strenth, improves coke output and quality, be conducive to coking by-products recovery etc., economic benefit and environmental benefit highly significant.
Although tamping coking has plurality of advantages, compared with filling coking by coke oven with top, its shortcoming is also very outstanding.Except production unit is complicated, environment protection control requirements sternly except, usually there is briquette peeling in production process, collapse, drastically influence the normal performance of coke oven production level.
The pusher side coal that collapses can make coal more than fire door increase, and workman's labor capacity increases, and on-site sanitation environment is poor; No matter process of coalingging is collapsed or is collapsed before coke side after pusher side, and coalingging completely all needs coal more than process fire door, needs to consume the regular hour, which adds single furnace operating time, reduce coke oven production operation COEFFICIENT K
3, impact is normal produces and maintenance; The coal that collapses makes briquette height in coking chamber uneven, affects furnace temperature, gives and adjusts firer to bring difficulty; Charing room temp is uneven, even can cause difficult coke pushing accident time serious; The pusher side coal that collapses makes pusher side burner charge of coke height reduction after coking, and the area that charge of coke contacts with coke pusher shoe is few, and during coke pushing, coke is expressed to furnace wall and causes furnace wall to damage aggravation by pushing ram, also may cause difficult coke pushing accident simultaneously; The coal that collapses causes pusher side fire door position briquette height not enough, make the increase of coking chamber headspace, temperature rising, pyrolysis coal gas out increased in this region residence time, at high temperature there is second pyrolysis reaction, and then make coking chamber top, upcast inwall generates a large amount of graphite, seriously may cause that charge of coke difficulty pushes away, raw gas derives smooth, the series of problems such as difficulty of coalingging, give normal safety, produce and bring many troubles.Therefore, should take measures to avoid briquette to collapse in tamping coking technique.
Cause the many factors that briquette collapses, wherein mixed coal moisture height is the major reason causing briquette to collapse, tamping coking technique requires that mixed coal moisture controlled is about 10%, when moisture exceedes Con trolling index, just should take some other necessity, feasible measure to collapse the generation of phenomenon to reduce briquette.
Summary of the invention
For improving the stability of briquette in tamping coking process, reducing briquette and collapsing, stablize coke oven and produce, the invention provides a kind of tamping coking method allocating biomass into.
The present invention is realized by following technical proposal: a kind of tamping coking method allocating biomass into, through the following step:
A, the biomass material of drying is crushed to length is less than 2cm, diameter is less than 0.5cm, obtains biomass material;
B, get steps A gained biomass material by 0.25 ~ 1% of mixed coal quality, the mixed coal that biomass material and moisture are greater than 10% is mixed, obtains mixture;
C, make into the mixture of step B firm by ramming briquette routinely;
D, step C gained briquette to be sent in coke furnace carbonization chamber routinely, carries out coking under the following conditions:
Coking time: 23h
Center Temperature of Coke Cake: 1000 DEG C
Collecting main pressure: 125pa
Coking bottom of carbonization chamber in latter stage pressure: 5pa
Maximum swelling pressure: 5 ~ 7KPa
Combustion chamber standard fire path temperature: pusher side and coke side are 1250 DEG C
Heat-up rate: start ~ the 3 hour, 0.1 ~ 0.2 DEG C/min;
3rd hour ~ the 5th hour, 0.15 ~ 0.25 DEG C/min;
5th hour ~ the 7th hour, 0.3 ~ 0.4 DEG C/min;
7th hour ~ the 9th hour, 0.6 ~ 0.7 DEG C/min;
9th hour ~ the 12nd hour, 1.5 ~ 2 DEG C/min;
12nd hour ~ the 14th hour, 2.5 ~ 3.5 DEG C/min;
14th hour ~ the 16th hour, 0.4 ~ 0.8 DEG C/min;
16th hour ~ the 23rd hour, 0.1 ~ 0.2 DEG C/min.
The biomass material of described steps A is Hemp Eupatorium, straw, corn stalk or rape straw.
The briquette of described step C is of a size of 13250 × 440 × (4800 ~ 5200) mm, and briquette density is 1000kg/m
3.
The advantage that the present invention possesses and effect:
One of advantage that tamping coke furnace more conventional top charging coke is compared can enter high-volatile, weak caking coal or moderate cohesive coal by polygamy, production high-quality blast furnace is burnt, burnt and the foundry coke of coke powder and petroleum coke powder production high-quality blast furnace can also be mixed, and produce gasification Jiao with 100% high volatile coal.The present invention additionally allocates biomass material in the tamping coking coal charge prepared.Owing to have selected suitable granularity and biomass material and coking coal Homogeneous phase mixing, in the process of making firm by ramming, biomass material closely embeds briquette, by crosslinked for whole briquette, tractive together, the firm physical structure of briquette, thus greatly reduce briquette in production process peeling, collapse phenomenon, effectively improve coke oven produce operating efficiency.Coke oven is after application the present invention, and peeling, the collapse rate of briquette reduce to less than 1% from original more than 10%.Coke oven production operation COEFFICIENT K
3more than 90% is brought up to by less than 30% before.
Because the biomass amount of allocating into is not more than 1%, the impact of Coke Quality is very micro-.Simultaneously, the comprehensive utilization of the present invention to multiple kinds of crops stalk provides an effective way, burn the environmental pollution of generation to reducing straw from village and effectively control spreading of Invasive Alien Species Hemp Eupatorium, slowing down its ecological hazard, all there is very positive social effect.
Embodiment
Below by embodiment, the present invention will be further described.
Embodiment 1
A, the Hemp Eupatorium of drying is crushed to length is less than 2cm, diameter is less than 0.5cm, obtains biomass material;
B, get steps A gained biomass material by 1% of mixed coal quality, the mixed coal that biomass material and moisture are greater than 10% is mixed, obtains mixture;
C, on coal charger, make into the mixture production operation program routinely of step B and method firm by ramming briquette; Described briquette is of a size of 13250 × 440 × 5000mm, and briquette density is 1000kg/m
3;
D, step C gained briquette to be sent in coke furnace carbonization chamber by coal charger, carries out coking under the following conditions:
Coking time: 23h
Center Temperature of Coke Cake: 1000 DEG C
Collecting main pressure: 125pa
Coking bottom of carbonization chamber in latter stage pressure: 5pa
Maximum swelling pressure: 5 ~ 7KPa
Combustion chamber standard fire path temperature: pusher side and coke side are 1250 DEG C
Heat-up rate: start ~ the 3 hour, 0.1 ~ 0.2 DEG C/min;
3rd hour ~ the 5th hour, 0.15 ~ 0.25 DEG C/min;
5th hour ~ the 7th hour, 0.3 ~ 0.4 DEG C/min;
7th hour ~ the 9th hour, 0.6 ~ 0.7 DEG C/min;
9th hour ~ the 12nd hour, 1.5 ~ 2 DEG C/min;
12nd hour ~ the 14th hour, 2.5 ~ 3.5 DEG C/min;
14th hour ~ the 16th hour, 0.4 ~ 0.8 DEG C/min;
16th hour ~ the 23rd hour, 0.1 ~ 0.2 DEG C/min.
Gained coke product quality meets index request, and briquette collapse rate is only 0.95%.Coke quality situation sees the following form:
| Index (%) | M 40 | M 10 | Heat reactivity CRI | Post-reaction strength CSR | Ash content | Volatile matter |
| Measured value | 84.6 | 5.4 | 28.2 | 64.46 | 13.84 | 1.12 |
Embodiment 2
A, the straw of drying is crushed to length is less than 2cm, diameter is less than 0.5cm, obtains biomass material;
B, get steps A gained biomass material by 0.5% of mixed coal quality, the mixed coal that biomass material and moisture are greater than 10% is mixed, obtains mixture;
C, on coal charger, make into the mixture production operation program routinely of step B and method firm by ramming briquette; Described briquette is of a size of 13250 × 440 × 4800mm, and briquette density is 1000kg/m
3;
D, step C gained briquette to be sent in coke furnace carbonization chamber by coal charger, carries out coking under the following conditions:
Coking time: 23h
Center Temperature of Coke Cake: 1000 DEG C
Collecting main pressure: 125pa
Coking bottom of carbonization chamber in latter stage pressure: 5pa
Maximum swelling pressure: 5 ~ 7KPa
Combustion chamber standard fire path temperature: pusher side and coke side are 1250 DEG C
Heat-up rate: start ~ the 3 hour, 0.1 ~ 0.2 DEG C/min;
3rd hour ~ the 5th hour, 0.15 ~ 0.25 DEG C/min;
5th hour ~ the 7th hour, 0.3 ~ 0.4 DEG C/min;
7th hour ~ the 9th hour, 0.6 ~ 0.7 DEG C/min;
9th hour ~ the 12nd hour, 1.5 ~ 2 DEG C/min;
12nd hour ~ the 14th hour, 2.5 ~ 3.5 DEG C/min;
14th hour ~ the 16th hour, 0.4 ~ 0.8 DEG C/min;
16th hour ~ the 23rd hour, 0.1 ~ 0.2 DEG C/min.
Gained coke product quality meets index request, and briquette collapse rate is only 1.0%.Coke quality situation sees the following form:
| Index (%) | M 40 | M 10 | Heat reactivity CRI | Post-reaction strength CSR | Ash content | Volatile matter |
| Measured value | 85.3 | 5.2 | 28.1 | 64.67 | 13.65 | 1.25 |
Embodiment 3
A, the corn stalk of drying is crushed to length is less than 2cm, diameter is less than 0.5cm, obtains biomass material;
B, get steps A gained biomass material by 0.25% of mixed coal quality, the mixed coal that biomass material and moisture are greater than 10% is mixed, obtains mixture;
C, on coal charger, make into the mixture production operation program routinely of step B and method firm by ramming briquette; Described briquette is of a size of 13250 × 440 × 5200mm, and briquette density is 1000kg/m
3;
D, step C gained briquette to be sent in coke furnace carbonization chamber by coal charger, carries out coking under the following conditions:
Coking time: 23h
Center Temperature of Coke Cake: 1000 DEG C
Collecting main pressure: 125pa
Coking bottom of carbonization chamber in latter stage pressure: 5pa
Maximum swelling pressure: 5 ~ 7KPa
Combustion chamber standard fire path temperature: pusher side and coke side are 1250 DEG C
Heat-up rate: start ~ the 3 hour, 0.1 ~ 0.2 DEG C/min;
3rd hour ~ the 5th hour, 0.15 ~ 0.25 DEG C/min;
5th hour ~ the 7th hour, 0.3 ~ 0.4 DEG C/min;
7th hour ~ the 9th hour, 0.6 ~ 0.7 DEG C/min;
9th hour ~ the 12nd hour, 1.5 ~ 2 DEG C/min;
12nd hour ~ the 14th hour, 2.5 ~ 3.5 DEG C/min;
14th hour ~ the 16th hour, 0.4 ~ 0.8 DEG C/min;
16th hour ~ the 23rd hour, 0.1 ~ 0.2 DEG C/min.
Gained coke product quality meets index request, and briquette collapse rate is only 0.9%.Coke quality situation sees the following form:
| Index (%) | M 40 | M 10 | Heat reactivity CRI | Post-reaction strength CSR | Ash content | Volatile matter |
| Measured value | 83.8 | 5.2 | 28.5 | 63.87 | 13.86 | 1.20 |
Claims (3)
1. allocate a tamping coking method for biomass into, it is characterized in that through the following step:
A, the biomass material of drying is crushed to length is less than 2cm, diameter is less than 0.5cm, obtains biomass material;
B, get steps A gained biomass material by 0.25 ~ 1% of mixed coal quality, the mixed coal that biomass material and moisture are greater than 10% is mixed, obtains mixture;
C, make into the mixture of step B firm by ramming briquette routinely;
D, step C gained briquette to be sent in coke furnace carbonization chamber routinely, carries out coking under the following conditions:
Coking time: 23h
Center Temperature of Coke Cake: 1000 DEG C
Collecting main pressure: 125pa
Coking bottom of carbonization chamber in latter stage pressure: 5pa
Maximum swelling pressure: 5 ~ 7KPa
Combustion chamber standard fire path temperature: pusher side and coke side are 1250 DEG C
Heat-up rate: start ~ the 3 hour, 0.1 ~ 0.2 DEG C/min;
3rd hour ~ the 5th hour, 0.15 ~ 0.25 DEG C/min;
5th hour ~ the 7th hour, 0.3 ~ 0.4 DEG C/min;
7th hour ~ the 9th hour, 0.6 ~ 0.7 DEG C/min;
9th hour ~ the 12nd hour, 1.5 ~ 2 DEG C/min;
12nd hour ~ the 14th hour, 2.5 ~ 3.5 DEG C/min;
14th hour ~ the 16th hour, 0.4 ~ 0.8 DEG C/min;
16th hour ~ the 23rd hour, 0.1 ~ 0.2 DEG C/min.
2. tamping coking method according to claim 1, is characterized in that: the biomass material of described steps A is Hemp Eupatorium, straw, corn stalk or rape straw.
3. tamping coking method according to claim 1 and 2, is characterized in that: the briquette of described step C is of a size of 13250 × 440 × (4800 ~ 5200) mm, and briquette density is 1000kg/m
3.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236557A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of process for upgrading of biomass moulding material |
| CN107236558A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of handling process of biomass |
| CN108219807A (en) * | 2016-12-13 | 2018-06-29 | 鞍钢股份有限公司 | A kind of preparation method of blast furnace biomass iron coke |
| CN108795463A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | The method that coking production is carried out as part coking raw material using Wooden Biomass |
| CN114214082A (en) * | 2021-11-29 | 2022-03-22 | 山东钢铁股份有限公司 | Method for efficiently recycling fallen leaves |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112952A (en) * | 1994-12-22 | 1995-12-06 | 何国威 | Coking by one's self with one third of coke and coke powder to produce high quality metallurgical coke and metallurgical casting coke |
| CN102925183A (en) * | 2012-10-23 | 2013-02-13 | 鞍钢股份有限公司 | Hot tamping coke making method |
-
2015
- 2015-10-21 CN CN201510693310.0A patent/CN105238421B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1112952A (en) * | 1994-12-22 | 1995-12-06 | 何国威 | Coking by one's self with one third of coke and coke powder to produce high quality metallurgical coke and metallurgical casting coke |
| CN102925183A (en) * | 2012-10-23 | 2013-02-13 | 鞍钢股份有限公司 | Hot tamping coke making method |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107236557A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of process for upgrading of biomass moulding material |
| CN107236558A (en) * | 2016-03-29 | 2017-10-10 | 北京三聚环保新材料股份有限公司 | A kind of handling process of biomass |
| CN108219807A (en) * | 2016-12-13 | 2018-06-29 | 鞍钢股份有限公司 | A kind of preparation method of blast furnace biomass iron coke |
| CN108795463A (en) * | 2017-04-28 | 2018-11-13 | 宝山钢铁股份有限公司 | The method that coking production is carried out as part coking raw material using Wooden Biomass |
| CN114214082A (en) * | 2021-11-29 | 2022-03-22 | 山东钢铁股份有限公司 | Method for efficiently recycling fallen leaves |
| CN114214082B (en) * | 2021-11-29 | 2024-05-28 | 山东钢铁股份有限公司 | Method for efficiently recycling fallen leaves |
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