CN1004634B - Process of making formed coal for gasification - Google Patents
Process of making formed coal for gasification Download PDFInfo
- Publication number
- CN1004634B CN1004634B CN86106467.4A CN86106467A CN1004634B CN 1004634 B CN1004634 B CN 1004634B CN 86106467 A CN86106467 A CN 86106467A CN 1004634 B CN1004634 B CN 1004634B
- Authority
- CN
- China
- Prior art keywords
- coal
- temperature
- gas
- gasification
- moulded
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired
Links
Images
Abstract
The present invention provides a method for preparing moulded coal for gasification. Although the author of the text proposes the method that dust coal is heated to the softening temperature, and then the dust coal is rolled to be shaped and is sprayed to be cooled, the method has the abuses of hard control of shaping temperature, easy blockage of hot state dust coal, low strength of the moulded coal, environmental pollution, etc. Therefore, an improvement measure is provided. Firstly, standby coal is improved to make ingredients uniform and stable. Consequently, variation factors influencing the shaping temperature are easy to control. A dredging device and a boost device are added in equipment to prevent blockage; the prepared moulded coal is fed into a batch can to be thermally stewed in order to increase strength; volatilized gas, etc. are comprehensively utilized to improve environment. When the moulded coal prepared by the method is used for a fixed bed gas stove, the effect is good, and the economic and social benefits are obvious.
Description
The present invention is relevant with coal processing and utilization, utilizes various coals to be mixed the back by the hot pressing upgrading more precisely, produces formed coal for gasification.
Be to adopt pressure sintering to produce moulded coal before this, purpose is as formed coke used in metallurgy.The inventor had once proposed moulded coal as coal for gasification in " the coal energy " third phase (50～54 pages) in nineteen eighty-three.Its method is to adopt coal is heated to softening temperature, solidifies being bordering under the homothermic condition then, and extrusion forming, and cool off with air-cooled or water spray means.But this technology still has many weak points, as mold temperature be difficult to control, hot fine coal easily stops up, briquette strength is not high, contaminate environment etc. in the production process, cause to be difficult to continuous production and to promote the use of.
The invention provides a kind of fine coal that can solve stops up; Extensively utilize different coals; Accurately control mold temperature; Briquette strength is improved; Compliance with environmental protection requirements can be produced the novel process of formed coal for gasification continuously.It is particularly suitable for:
1. based on bottle coal (or rich coal), mix and join a spot of hard coal (or weak caking coal or long-flame coal).
2. based on hard coal (or weak caking coal or long-flame coal), mix and join a spot of bottle coal (or rich coal).
The present invention is by rational coal blending and rapid heating, to raw coal play brokenly sticking resistance molten, improve active, improve effect such as thermostability.Specific practice is:
At first will lead, pay coal blending and give drying respectively, then with major and minor coal blending by a certain percentage (60%～90%: 40%～10%) send into the crusher (granularity that is crushed to less than 3mm accounts for more than 95%) of crusher or logical hot blast, join mutually with the heat-carrying gas of the strong rotation of 550 ℃～650 ℃ of temperature-stables, form high speed rotating and carry the scorching hot air-flow of powder * (speed generally surpasses 30 meter per seconds) secretly, make powder * and heat-carrying gas carry out sufficient heat exchange, fine coal is heated to desired mold temperature (400 ℃～480 ℃) 1～2 second moment.
This coal mode that is equipped with makes the ingredient stability of moulded coal, all neat, also realized continuously simultaneously, quantitatively, feed exactly, thereby can more easily control moulding variation of temperature factor.Simultaneously because the temperature of heat-carrying gas also is stable, can carry out control automatically to the parameters such as coal amount, coal temperature, hot blast rate, hot blast temperature, fuel quantity and combustion-supporting air quantity that influence mold temperature, strict control moulding variation of temperature has solved the key issue in hot-forming.
When fine coal is rapidly heated more than 400 ℃, produce thermoplasticity plastic mass preferably, this is the prerequisite of coal powder formation.But meanwhile, stop up, make to produce to be difficult to normally carry out because the formation of some amount plastic mass easily produces bonding again in pipeline or equipment.For avoiding stopping up, be provided with thermoplasticity fine coal delivery apparatus or boost installation respectively at certain position, on working direction, apply a kind of thrust for it, reduce it in advancing stagnation chance.
For making between the hot coal particle temperature even, adopt the spiral thermostatted (hereinafter to be referred as thermostatted) that has boost installation to carry out samming.Hot fine coal is 45～80 seconds by the time that thermostatted experienced; Temperature is 400 ℃～440 ℃ in the device.Big screw reamer is housed in the thermostatted, plays and stir and the conveying effect, fine coal at this moment could obtain uniformly good plasticity.For preventing that hot fine coal from stopping up, and is equipped with boost installation at the reamer tail end.
The fine coal that thermostatted comes out is squeezed into the ribbing through the speed governing extrusion machine, enters the moulded coal that roller briquetting machine is pressed into desired shape subsequently.Avoid producing buildup in extrusion machine ingress for coordinating charging and discharging, extrusion machine speed is adjustable; Extruder outlet distortion mouth pressing plate aperture also must be adjustable, to regulate the degree of closing in ribbing.
In fact the moulded coal of the demoulding just is still the moulded coal band that interlinks together, and its surface temperature differs greatly because of radiating condition is different with the temperature of junction, the difficult decline of junction temperature, and this is one of moulded coal reason of producing spontaneous combustion in process of production.For this reason, be provided with and the moulded coal band be cut to one by one the device of moulded coal separately rapidly, the moulded coal surface is fully contacted with air, quicken cooling, prevent spontaneous combustion.
Taked thermal treatment process for improving briquette strength, its concrete grammar is; Batch can sealing heat with several (quantity is not limit) band tilted plate was boiled in a covered pot over a slow fire 1～4 hour, made to bond more fine and closely between the coal grain, thereby had improved briquette strength.
The inflammable gas that the present invention produces producing in the moulded coal process, hot waste gas and fine coal etc. are all distinguished and are reclaimed and utilize:
1. the effuser of the inflammable gas installing micro-pressure operation that thermostatted is volatilized, the gas that is collected is pressed and delivered to suitable place and makes coal gas usefulness after cooling, udst separation.
2. hot waste gas recycles:
(1) from 3
#The crusher that the hot waste gas that cyclonic separator comes out enters logical hot blast (or does not enter crusher, goes into 1
#Cyclonic separator), coal is carried out preheating.
(2) the high-temperature blower hot waste gas of drawing, a part enters the full-automatic heat wind furnace, and a part enters drying machine coal is carried out drying.
3.2
#The isolated fine coal of cyclonic separator enters the full-automatic heat wind furnace as thermal source through the star-wheel air locking device.
4. moulding fine coal does not fall into water sealed tank, takes out dry back and uses as secondary coal blending.
5. all devices that is heated rapidly to moulding section (promptly from the whirlwind rapid heater to roller briquetting machine) is installed in the independent factory building, carries out totally closed operation, concentrates and gathers dust, and perhaps gathers dust separately respectively.
6. the position that airborne dust point is intensive (as the crusher of logical hot blast etc.) gathers dust separately.
The coal that is fit to atmospheric fixed bed gas-producer gasification usefulness at present is less.With the moulded coal that this technical process is produced, its physics and chemical property can both satisfy the requirement of this producer gas generator, thereby have enlarged available coal.Can be gathered materials on the spot in the area of storage coal resource, for developing industry provides the cheap energy.
Accompanying drawing is a process flow diagram of the present invention.
The embodiment of the invention:
One, is equipped with the coal measures system
Major and minor coal blending is gone into coal bunker separately after utilizing the hot waste gas drying by the scraper-type drying machine respectively.By electronic belt scale (connecing down the star-wheel air locking device) with the sealing hot waste gas with major and minor coal blending in 60%～65%: 40%～35% ratio is sent into the crusher that leads to hot blast quantitatively, accurately, continuously, is mixed equably at these two kinds of coals, fragmentation and preheating.This coal blending is by 1
#(the gained hot waste gas is again through 2 in the cyclonic separator separation
#Cyclonic separator separates, and wherein the gained hot waste gas is delivered to high-temperature blower; The full-automatic heat wind furnace that the fine coal that is separated is delivered to burner blower with roots blower in the mode of gas delivery through the star-wheel air locking device is made fuel, with the preparation gas carrier).
Two, rapid heating:
1
#The isolated fine coal of cyclonic separator is sent into the whirlwind rapid heater by the screw feeder of adjustable speed, joins mutually with the heat-carrying gas that from full-automatic hot-blast furnace temperature is 550 ℃～650 ℃, and this heat-carrying gas is (from 2 by the burning fine coal
#Cyclonic separator) flue gas that is produced and be made up of through the cycling hot waste gas of electric butterfly valve control high-temperature blower arrives 400 ℃～480 ℃ of desired mold temperatures with fine coal in instantaneously heating.The full-automatic heat wind furnace is provided with automatic control heat-carrying gas temperature and wind material than (2～3 meters
3/ kilogram) device, gained heat-carrying gas temperature-stable.
Three, extrusion molding:
The fine coal of reaching the type temperature that comes out from the whirlwind rapid heater enters the bottom and is provided with 3 of propeller type delivery apparatus
#Cyclonic separator separates, and wherein hot waste gas is delivered to the crusher of logical hot blast, and scorching hot fine coal enters the spiral thermostatted samming (temperature is 410 ℃ ± 5 ℃ in the device) 45～80 seconds that the reamer tail end has boost installation through the star-wheel air locking device.
The thermoplasticity coal that comes out thus enters speed governing extrusion machine (outlet distortion mouth pressing plate aperture is adjustable), is squeezed into the ribbing, is squeezed into the moulded coal of desired shape again by roller briquetting machine, and the fine coal of last moulding falls into water sealed tank, takes out airing, uses as secondary coal blending.
Four, moulded coal fracturer and thermal treatment:
For the moulded coal temperature is descended rapidly, the moulded coal fracturer of being made up of the vertical cutting knife and the baffle plate that laterally fractures has been installed in the exit of roller briquetting machine, with the moulded coal band of the firm demoulding, cut off and be cleaved into independent one by one moulded coal.Deliver to by the batch can sealing heat of five band tilted plates by drag conveyer then and boiled in a covered pot over a slow fire 1～4 hour.This moulded coal gets final product air feedization or stores stand-by.
The moulded coal of producing with this technology is through air storage more than a year, not deliquescence.At atmospheric fixed bed gas-producer (A
-13 types) still can normally gasify in, not soften, burst apart, phenomenon such as pulverizing.The gas quality that gasification produces is as follows: (seeing Table)
The quality of coal gas is different because of the proportioning of coal and coal.
The cohesiveness of moulded coal, activity etc. all have clear improvement than raw coal after measured.The Y value that has can reduce to 0 from 20 millimeter, and characteristic of char residue (1～8) reduces to 2～4 by 6～7, and what active alpha (1000 ℃) had brings up to 66.77% from 23.81%, and what have brings up to 64.66% from 42.13%.
Table:
(sampling in above per two hours once).
Claims (21)
1, a kind of preparation method of formed coal for gasification, it by: be equipped with technical process such as coal, rapid heating, samming, extrusion molding and formed, it is characterized in that said method:
(1). based on bottle coal (or rich coal), mix and join a spot of hard coal (or weak caking coal or long-flame coal) and produce formed coal for gasification; Or, mix and join a spot of bottle coal (or rich coal) and produce formed coal for gasification based on hard coal (or weak caking coal or long-flame coal).
(2). major and minor coal blending gives earlier drying respectively before being mixed;
(3). the major and minor coal blending of exsiccant according to a certain percentage (its proportioning is 60%-90%: after 40%-10%) delivering to the crusher in crushing of crusher or logical hot blast quantitatively, continuously, enter cyclonic separator No. 1,
(4). isolated satisfactory fine coal with have equilibrium temperature (from the full-automatic heat wind furnace, temperature is 550 degree Celsius-650 degree Celsius) join mutually in the whirlwind rapid heater with the heat-carrying gas of strong rotation, be heated to desired stable mold temperature 400 degree Celsius-480 degree Celsius in the moment of 1-2 second
The full-automatic heat wind furnace is provided with automatic control heat-carrying gas temperature (Celsius 550 spend-take the photograph 650 degree) and the wind material device than (2-3 cubic meter/kilogram), gained heat-carrying gas temperature-stable,
The parameters such as coal amount, coal temperature, hot blast rate, hot blast temperature, fuel quantity and combustion-supporting air quantity that influence the briquette molding temperature are carried out control automatically,
(5). the fine coal of having reached the type temperature No. 3 cyclonic separators through being provided with delivery apparatus again separates and enters the spiral thermostatted samming that has boost installation,
(6). with (its outlet distortion mouth pressing plate aperture is adjustable) is squeezed into the ribbing after the speed governing extrusion machine, and be pressed into the moulded coal of desired shape by roller briquetting machine,
(7). the moulded coal fracturer that vertical cutting knife is equipped with in the roller briquetting machine exit and the baffle plate that laterally fractures is formed,
(8). moulded coal carries out heat stewing (1-4 hour) with the batch can of band tilted plate.
2, according to the preparation method of the described formed coal for gasification of claim 1, it is characterized in that: the time that hot fine coal is experienced by the spiral thermostatted that has boost installation is 45 seconds-80 seconds; Temperature is 400 degree Celsius-440 degree Celsius in the device.
3, according to the preparation method of the described formed coal for gasification of claim 1, it is characterized in that: to producing the inflammable gas that is produced in the moulded coal process, hot waste gas and fine coal etc. is all distinguished and is reclaimed and utilize:
(1) will have the effuser of the inflammable gas installing micro-pressure operation that the spiral thermostatted of boost installation volatilizes, the gas that is collected is through cooling, and udst separation (available electro detarrer) is pressed and delivered to suitable place again and makes coal gas usefulness,
(2) hot waste gas recycles:
A. the hot waste gas that comes out from No. 3 cyclonic separators enters the crusher (or do not enter crusher, go into cyclonic separator No. 1) of logical hot blast, and coal is carried out preheating.
B. the high-temperature blower hot waste gas of drawing, a part enters the full-automatic heat wind furnace, and a part enters drying machine coal is carried out drying,
(3) No. 2 the isolated fine coal of cyclonic separator enters the full-automatic heat wind furnace as thermal source through the star-wheel air locking device.
(4) last moulding fine coal falls into water sealed tank, and take out dry back and use as secondary coal blending,
(5) all devices that is heated rapidly to moulding section (promptly from the whirlwind rapid heater to roller briquetting machine) is installed in the independent factory building, carries out totally closed operation, and concentrate and gather dust or gather dust separately respectively,
(6) position that airborne dust point is intensive (as the crusher of logical hot blast etc.) gathers dust separately.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106467.4A CN1004634B (en) | 1986-09-25 | 1986-09-25 | Process of making formed coal for gasification |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN86106467.4A CN1004634B (en) | 1986-09-25 | 1986-09-25 | Process of making formed coal for gasification |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN86106467A CN86106467A (en) | 1988-04-27 |
| CN1004634B true CN1004634B (en) | 1989-06-28 |
Family
ID=4803225
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN86106467.4A Expired CN1004634B (en) | 1986-09-25 | 1986-09-25 | Process of making formed coal for gasification |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1004634B (en) |
Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102229831B (en) * | 2011-04-21 | 2014-04-02 | 李功民 | Pulverized lignite thermal forming method and device |
| KR101405478B1 (en) * | 2012-12-26 | 2014-06-11 | 주식회사 포스코 | Method for manufacturing coal bruquettes and apparatus for the same |
| CN105080377A (en) * | 2014-04-23 | 2015-11-25 | 中国石油化工股份有限公司 | Coal mixing ratio online monitoring method |
| CN105112115A (en) * | 2015-09-23 | 2015-12-02 | 白山市亿通经贸有限公司 | Anthracite composite fuel, composite coal and preparation method for composite coal |
| CN107234120A (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 moulding process of house refuse and the garbage-molding material as made from the technique |
-
1986
- 1986-09-25 CN CN86106467.4A patent/CN1004634B/en not_active Expired
Also Published As
| Publication number | Publication date |
|---|---|
| CN86106467A (en) | 1988-04-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN104556036B (en) | The method for preparing solid-state calcium carbide | |
| US4043764A (en) | Process for manufacturing combustible bricks from plant materials | |
| CN107008914A (en) | It is a kind of to improve the reduced iron powder production technology of reduced iron powder performance | |
| CN1004634B (en) | Process of making formed coal for gasification | |
| CN103602772B (en) | Method for producing iron by directly reducing brown iron ore or hematite by means of waste plastic | |
| CS208754B2 (en) | Method of preparation of the charge for making the shaped coke | |
| JPS62158812A (en) | Manufacture of carburizing material for metallurgy | |
| CN104120263A (en) | High-solid-gas-ratio rotary kiln direct reduction method for nickel iron smelting | |
| CN107337208A (en) | A kind of system and method that calcium carbide is produced using biomass pyrolytic | |
| US4236929A (en) | Rapid strength development in compacting glass batch materials | |
| CN207192808U (en) | A kind of system for preparing calcium carbide | |
| CN106676222B (en) | The facility and method of a kind of lateritic nickel ore coal original washing powder state also original production ferronickel | |
| CN220951872U (en) | Metallurgical solid waste treatment system based on direct reduction and melt separation duplex method | |
| CN205740375U (en) | The preparation system of carbide | |
| CN102808057A (en) | Coal base direct reduction iron process of external heating horizontal channel type furnace | |
| JP2003226879A (en) | Method for adjusting particle size of coal filled into coke oven | |
| CN206279178U (en) | It is a kind of to improve the dedicated system that lignite pyrolysis char is molded ball intensity | |
| CN105838467A (en) | Process for producing humate briquette | |
| CN107285317A (en) | A kind of system and method for preparing calcium carbide | |
| CN202936395U (en) | Civilian use coal briquette production system | |
| RU93802U1 (en) | TECHNOLOGICAL LINE FOR THE PRODUCTION OF METALLIZED PRODUCT | |
| JPS606901B2 (en) | Glass manufacturing method that preheats raw materials | |
| CN211261681U (en) | A novel drying device for glutamic acid mycoprotein | |
| JPS63128129A (en) | Manufacture of sintered ore | |
| JPS5931576B2 (en) | Iron ore sintering method |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| CI01 | Publication of corrected invention patent application |
Correct: Jing Dazhan|Zou Pu False: Xu Dazhan|Zou Lin Number: 17 Page: 22 Volume: 4 |
|
| C13 | Decision | ||
| GR02 | Examined patent application | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| ERR | Gazette correction |
Free format text: CORRECT FROM: XU DAZHAN ZOU LIN TO: JINGDAZHAN ZOU PO |
|
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |