CN107177366A - A kind of coal cinder stacking coke production technique - Google Patents

A kind of coal cinder stacking coke production technique Download PDF

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Publication number
CN107177366A
CN107177366A CN201710608260.0A CN201710608260A CN107177366A CN 107177366 A CN107177366 A CN 107177366A CN 201710608260 A CN201710608260 A CN 201710608260A CN 107177366 A CN107177366 A CN 107177366A
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China
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coal
stacking
coke
production technique
quenching
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CN201710608260.0A
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姚润生
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Shanxi Bojiahui Technology Co., Ltd.
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姚润生
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    • CCHEMISTRY; METALLURGY
    • C10PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
    • C10BDESTRUCTIVE DISTILLATION OF CARBONAGEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
    • C10B53/00Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
    • C10B53/04Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal

Abstract

The present invention relates to a kind of coal cinder stacking coke production technique, comprise the following steps:Pretreatment:After coal charge is crushed, weigh and corresponding crush coal charge addition or without being mixed to get feed coal after binding agent;Shaping:Feed coal hot pressing or cold moudling are obtained into moulded coal;Stacking:Moulded coal stacking coal-forming wall is simultaneously attached to vertical coke oven in side;Coking:The destructive distillation in vertical coke oven;Quenching:Coke is pushed into coke quenching cart, sieves, preserve after quenching, the coal-gas recovering processing that destructive distillation is produced.Technical scheme effectively improves the viscosity of coal so that the consumption of weak caking coal can bring up to more than 40%, and improve its density using cold moudling technology, and coking time can be greatly shortened;Destructive distillation initial temperature, reduction coking chemical waste water can be effectively improved to generate and improve gas quality;Reclaimed by the gas heat to generation, realize the effect of energy-saving and environmental protection.

Description

A kind of coal cinder stacking coke production technique
Technical field
The invention belongs to coal coking technical field, and in particular to a kind of coal cinder stacking coke production technique.
Background technology
Coke be bituminous coal isolation air under conditions of, be heated to certain temperature, by drying, pyrolysis, melting, glue What the stages such as knot, solidification, contraction were finally made, this process is high-temperature coking (high-temperature retorting).Jiao obtained by high-temperature coking Charcoal can be used for blast furnace process, casting and gasify.Produced in process of coking it is recovered, purification after coke-stove gas be both high heating value Fuel, be the important organic synthesis raw material of industry again.Coke is mainly used in blast furnace ironmaking and for copper, lead, zinc, titanium, antimony, mercury Deng the blast furnace smelting of non-ferrous metal, reducing agent, exothermic mixture and stock column skeleton function are played.
Coal resources in China is enriched very much, but passes through geological prospecting, and the reserves of coking coal only account for gross reserves 36.78%, wherein can the coking coal reserves of independent coking there was only 6.21%.In addition, coal source and coal are distributed not in national each province , some particularly southern regional coal reserves of some provinces and regions are seldom, and mainly mill coal.Therefore how significantly to expand non- The utilization of coking coal, is the important topic of current China's coking industry development.In addition to blast furnace ironmaking needs a large amount of coke, other Coke required for industry is quite a few, such as Foundry Coke, and gasification is burnt, electric Jiao etc..Cupola coke is the main of furnace cupola molten iron Fuel, for melting batch, and overheats molten iron, also plays support stock column, the effect such as the good gas permeability of holding and confession charcoal.
China Coke industry is grown along with steel industry Growth Development, and its coal utilization technology and coking technique technology can be rated as It is world-class.Existing coke production technique has resource restriction, an environmental pollution, the problems such as especially operating environment is severe, The exploitation of 21 century coke production technique has two great development directions, is concentrated mainly on the effective of weakly caking coal and utilizes and enhancement of environment, drop In terms of low energy consumption.Correspondingly, many New Coke-making Technologies are developed, " the jumbo Coking reaction of such as European coking worker exploitation The single hole coking system of device one ", SCOPE21 techniques of Japan's exploitation etc..The new coke production technology of exploitation is world's coking The problem that industry faces.
To expand coking coal as raw material, by specific coal blending process, hot extrusion molding is fabricated with certain size and strong Coke is made by charing in the shaped coal of degree, is an important method for expanding coking coal source.Both can be using jet coal, smokeless The coal cokings such as coal, can also expand cohesive, weakly caking coal chlorine adding ratio.Existing coke production technique, it is tight usually using resource The strong caking coal of some scarce, production efficiency is relatively low, the thermal efficiency is poor.Meanwhile, the problems such as also gas leak pollutes environment.Cause This, develops new coking process and current technology is thoroughly innovated.
Publication No. CN1923956A patent application discloses a kind of pretreatment technology of coking mixing coal, and specifically discloses Step:A certain amount of anthracitic coking mixing coal will be incorporated to be mixed evenly with water, another side heating is while be stirred to Predetermined moisture content, that is, by coking mixing coal carry out bubble, water boil, drying process, make the coking coal and nothing in coking mixing coal Bituminous coal merges into an organic whole;The coking mixing coal by boiling by bubble, water, after drying process enters stove coking again, can produce high-quality burnt.But The moisture that above-mentioned technical proposal is boiled after step in coal through bubble, water is largely raised, and step is also additionally dried, and wastes energy Source and improve cost.
The content of the invention
In view of the above-mentioned deficiencies in the prior art, it is an object of the present invention to a kind of new coal cinder stacking coke production technique is provided, Can be by improving the viscosity and density of coal, coking time, degree can be greatly shortened, reduces coking chemical waste water and generate and improve coal gas Quality, has the advantages that energy-conserving and environment-protective.
The technical scheme that uses to achieve the above object of the present invention is:A kind of coal cinder stacking coke production technique, including with Lower step:
1) pre-process:After coal charge is crushed, by blending ratio weigh it is corresponding crush coal charge addition or without binding agent after, Damping, it is mixed to get feed coal;
2) it is molded:Feed coal hot pressing or cold moudling are obtained into moulded coal;
3) stacking:Moulded coal stacking coal-forming wall is simultaneously attached to vertical coke oven in side;
4) coking:The destructive distillation in vertical coke oven;
5) quenching:Coke is pushed into coke quenching cart, sieves, preserve after quenching, the coal-gas recovering processing that destructive distillation is produced;
Further, step 1) in crush coal charge grain diameter be less than 2mm;
Further, step 1) in damping to moisture be 2-6%;
Further, step 2) in hot pressing or cold moudling compression ratio be more than 2:1, briquetting pressure is more than 20MPa;
Further, it is preferable to cold moudling;
Further, step 2) in hot pressing or cold moudling moulded coal density >=1.25 ton/m3
Further, step 3) in moulded coal stacking coal-forming wall is put into the dragging on coal plate of totally-enclosed charging car, and side By dragging coal baffle, by dragging coal plate and dragging the motion of coal baffle plate that stacking coal wall is loaded into the furnace chamber of vertical coke oven;
Further, step 4) in pyrolysis temperature be 950-1050 DEG C;
Further, step 4) in retorting time be 16-26h;
Further, step 5) in will refine ripe coke with ram and be pushed into coke quenching cart through coke guide;Quenching is used Cooled coal gas, nitrogen or vapor quenching, then sieve, preserve;
Further, step 5) in destructive distillation produce coal gas through heat exchange be cooled to 650 DEG C after, be chilled to 85 with cyclic ammonia water DEG C, then it is sent to chemical products recovery workshop working process through gas gathering system.
In summary, by adopting the above-described technical solution, the beneficial effects of the invention are as follows:
1) by the application of coal cinder stacking New Coke-making Technology, coke chemicals upgrading is realized, is that coal chemical enterprise is found New growth engines is arrived;
2) Iight sticky coal ratio is improved, valuable coking coal resource is saved, reduces coke production cost, realize enterprise Quick sustainable development;
3) shaping coking is carried out to as-fired coal, improves destructive distillation initial temperature, shortened coking time 20% or so, improve Coking ability, reduces coking chemical waste water 6%--8%, improves gas quality;
4) stove technology is entered using totally-enclosed stacking coal bin shaped coal, produced cigarette when preventing to coaling along with coke, dirt, The discharge of BaP etc., it is environment-friendly.
Technical scheme allows the consumption of weak caking coal to bring up to more than 40%, and uses thermoforming skill Art improves its density, and coking time can be greatly shortened;Destructive distillation initial temperature, reduction coking chemical waste water is effectively improved to generate and improve Gas quality;Reclaimed by the gas heat to generation, realize the effect of energy-saving and environmental protection.
Embodiment
Following examples are used to illustrate the present invention, but are not limited to the scope of the present invention.
A kind of coal cinder stacking coke production technique, comprises the following steps:
1) pre-process:After coal charge is crushed according to coal property, weighed by blending ratio and corresponding crush coal charge addition or not Add after binding agent, damping, be mixed to get feed coal;
2) it is molded:Feed coal hot pressing or cold moudling are obtained into moulded coal;
3) stacking:Moulded coal stacking coal-forming wall is simultaneously attached to vertical coke oven in side;
4) coking:The destructive distillation in vertical coke oven;
5) quenching:Coke is pushed into coke quenching cart, sieves, preserve after quenching, the coal-gas recovering processing that destructive distillation is produced;
Preferably, step 1) in crush coal charge grain diameter be less than 2mm;
Preferably, step 2) in hot pressing or cold moudling compression ratio be more than 2:1, briquetting pressure is more than 20MPa;
Preferably, using the method for cold moudling;It is simpler and easy to operate compared to hot-forming.
Preferably, step 2) in hot pressing or cold moudling moulded coal density >=1.25 ton //m3
Preferably, step 3) in moulded coal stacking coal-forming wall is put into the dragging on coal plate of charging car, and side is by dragging coal Baffle, by dragging coal plate and dragging the motion of coal baffle plate that stacking coal wall is loaded into the furnace chamber of vertical coke oven;
Preferably, step 4) in pyrolysis temperature be 950-1050 DEG C;
Preferably, step 4) in retorting time be 16-26h;
Preferably, step 5) in will refine ripe coke with ram and be pushed into coke quenching cart through coke guide;Quenching is used Cooled coal gas, nitrogen or vapor quenching, then sieve, preserve;
Preferably, step 5) in destructive distillation produce coal gas through heat exchange be cooled to 650 DEG C after, be chilled to 85 with cyclic ammonia water DEG C, then it is sent to chemical products recovery workshop working process through gas gathering system.
Embodiment 1
A kind of coal cinder stacking coke production technique, comprises the following steps:
1) pre-process:After coal charge is crushed, phase is weighed by the blending ratio of binding coal 60%, the weight of weak caking coal 40% Moisture is adjusted to after 2-6% be mixed to get feed coal by the crushing coal charge answered without binding agent is conditioned, crushes the particle of coal charge Particle diameter is less than 2mm;
2) it is molded:Feed coal hot pressing or cold moudling are obtained into moulded coal, the compression ratio of hot pressing or cold moudling is more than 2:1, Briquetting pressure is more than 20MPa, obtained hot pressing or cold moudling moulded coal density >=1.25 ton/m3
3) stacking:Moulded coal stacking coal-forming wall is put into the dragging on coal plate of totally-enclosed charging car, and side is by dragging coal baffle plate Stop, by dragging coal plate and dragging the motion of coal baffle plate that stacking coal wall is loaded into the furnace chamber of vertical coke oven;
4) coking:The destructive distillation in vertical coke oven, pyrolysis temperature is 950-1050 DEG C, and retorting time is 14h;
5) quenching:Ripe coke, which will be refined, with ram is pushed into coke quenching cart through coke guide;Quenching uses cooled coal gas quenching, Then sieve, preserve;After the coal gas that destructive distillation is produced is cooled to 650 DEG C through heat exchange, 85 DEG C are chilled to cyclic ammonia water, then through gas collection System is sent to chemical products recovery workshop working process.
After testing, coking chemical waste water amount is reduced to 6%, and obtained gas composition is as follows:Methane 34%, nitrogen content 3%, one Carbonoxide 11%, calorific value, 20.2MJ/m2
Embodiment 2
A kind of coal cinder stacking coke production technique, comprises the following steps:
1) pre-process:Corresponding crushing coal charge is weighed by the blending ratio of binding coal 60%, the weight of weak caking coal 40% Moisture is adjusted to after 2-6% to be mixed to get feed coal without binding agent is conditioned, the grain diameter for crushing coal charge is less than 2mm;
2) it is molded:Feed coal hot pressing or cold moudling are obtained into moulded coal, the compression ratio of hot pressing or cold moudling is more than 2:1, Briquetting pressure is more than 20MPa, obtained hot pressing or cold moudling moulded coal density >=1.25 ton/m3
3) stacking:Moulded coal stacking coal-forming wall is put into the dragging on coal plate of totally-enclosed charging car, and side is by dragging coal baffle plate Stop, by dragging coal plate and dragging the motion of coal baffle plate that stacking coal wall is loaded into the furnace chamber of vertical coke oven;
4) coking:The destructive distillation in vertical coke oven, pyrolysis temperature is 950-1050 DEG C, and retorting time is 14h;
5) quenching:Ripe coke, which will be refined, with ram is pushed into coke quenching cart through coke guide;Quenching uses cooled coal gas quenching, Then sieve, preserve;After the coal gas that destructive distillation is produced is cooled to 650 DEG C through heat exchange, 85 DEG C are chilled to cyclic ammonia water, then through gas collection System is sent to chemical products recovery workshop working process.
After testing, coking chemical waste water amount is reduced to 6%, and obtained gas composition is as follows:Methane 35%, nitrogen content 3%, one Carbonoxide 10%, calorific value, 20.6MJ/m2
Embodiment 3
Exemplified by existing 5.5 meters of tamping coke furnaces, transformed, target year 200000 tons of yield of increase:
1) preheating briquette shaper is calculated
Forming machine is the key equipment of production, has considerable influence to the production efficiency and quality of product.According to this work The requirement of skill is, it is necessary to production capacity is big, hot pressing or cold-compacting forming device.
The design requirement fills the hole of moulded coal 60 daily, 1330 pieces of moulded coal is needed per hole, the daily working time is 21 hours, i.e., every Hour needs the moulded coal to be:
N0=(60 × 1330) ÷ 21=3800 parts
Press model SKM600-6B, rated pressure 31.5MPa, the average 7s of single device is selected to produce 1 piece of moulded coal, i.e., Every can produce moulded coal per hour
N=3600 ÷ 7=514 parts
Need press
N=1900 ÷ 514=7.38 platforms, round numbers 8
If 1 standby, therefore selected forming machine number of units is N=9 platforms
2) moulded coal stacking station is calculated
Palletizing mechanical is the key equipment of production, has considerable influence to the production efficiency of product.Working time is divided into moulded coal Palletization times and loading time.
Palletization times
T1=20min
Loading time
T2=3.5min
Assuming that calculating cycle has 20% error, then K=1.2
Total operating time
T=K (T1+T2)=1.2 × (20+3.5)=28.2min
Therefore T0=50.4min>T=28.2min, use requirement is met using 1 set of stacking station.
Above-described embodiment is simply to illustrate that the technical concepts and features of the present invention, the purpose is to be to allow in the art Those of ordinary skill can understand present disclosure and implement according to this, and it is not intended to limit the scope of the present invention.It is all It is the equivalent change or modification according to made by the essence of present invention, should all covers within the scope of the present invention.

Claims (10)

1. a kind of coal cinder stacking coke production technique, it is characterised in that comprise the following steps:
1) pre-process:After coal charge is crushed, weigh it is corresponding crush coal charge addition or without binding agent after, damping, mix To feed coal;
2) it is molded:Feed coal hot pressing or cold moudling are obtained into moulded coal;
3) stacking:Moulded coal stacking coal-forming wall is simultaneously attached to vertical coke oven in side;
4) coking:The destructive distillation in vertical coke oven;
5) quenching:Coke is pushed into coke quenching cart, sieves, preserve after quenching, the coal-gas recovering processing that destructive distillation is produced.
2. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 1) middle crushing coal charge Grain diameter is less than 2mm.
3. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 1) in damping to moisture Content is 2-6%.
4. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 2) in hot pressing or cold pressing The compression ratio of shaping is more than 2:1, briquetting pressure is more than 20MPa.
5. a kind of coal cinder stacking coke production technique as claimed in claim 2, it is characterised in that step 2) in hot pressing or cold pressing Moulded coal density >=1.25 ton/m of shaping3
6. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 3) in by moulded coal stacking Coal-forming wall is put into the dragging on coal plate of totally-enclosed charging car, and side is by dragging coal baffle, by dragging coal plate and dragging coal baffle plate Motion stacking coal wall is loaded into the furnace chamber of vertical coke oven.
7. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 4) in pyrolysis temperature be 950-1050℃。
8. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 4) in retorting time be 16-26h。
9. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 5) in will with ram Refine ripe coke and be pushed into coke quenching cart through coke guide;Quenching uses cooled coal gas, nitrogen or vapor quenching, then sieves, stores Hide.
10. a kind of coal cinder stacking coke production technique as claimed in claim 1, it is characterised in that step 5) in destructive distillation produce Coal gas through heat exchange be cooled to 650 DEG C after, 85 DEG C are chilled to cyclic ammonia water, then chemical products recovery vehicle is sent to through gas gathering system Between working process.
CN201710608260.0A 2017-07-24 2017-07-24 A kind of coal cinder stacking coke production technique Pending CN107177366A (en)

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111187634A (en) * 2019-11-24 2020-05-22 石晶 Intelligent forming, stacking and coking production method

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DE102010047036A1 (en) * 2010-09-30 2012-04-05 Rwe Power Ag Method for providing stack of brown coal briquette bundles on substrate in industry, involves constructing stack of mold bundles, packing combustible mold bundles into paper-based packaging, and cooling channel-free stacks of bundles
CN104531253A (en) * 2014-12-31 2015-04-22 太原重工股份有限公司 Briquette coal wall manufacturing device and method for loading briquette coal in vertical coke oven
CN105542799A (en) * 2015-12-19 2016-05-04 太原重工股份有限公司 Briquette staking station

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111187634A (en) * 2019-11-24 2020-05-22 石晶 Intelligent forming, stacking and coking production method

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