CN110079353A - A kind of pulverized coal pyrolysis charing chamber device - Google Patents
A kind of pulverized coal pyrolysis charing chamber device Download PDFInfo
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- CN110079353A CN110079353A CN201910370462.5A CN201910370462A CN110079353A CN 110079353 A CN110079353 A CN 110079353A CN 201910370462 A CN201910370462 A CN 201910370462A CN 110079353 A CN110079353 A CN 110079353A
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- coal
- gas
- carbonization chamber
- heat
- charing
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10B—DESTRUCTIVE DISTILLATION OF CARBONACEOUS MATERIALS FOR PRODUCTION OF GAS, COKE, TAR, OR SIMILAR MATERIALS
- C10B53/00—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form
- C10B53/04—Destructive distillation, specially adapted for particular solid raw materials or solid raw materials in special form of powdered coal
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- Engineering & Computer Science (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Coke Industry (AREA)
Abstract
Coal heat decomposition stove (coke oven) currently on the market mostly uses intermittent coking, the proportion of as-fired coal, dehydration, into coal, preheating, charing, Jiao Gaizhi, dry each processing step such as to put out relatively independent, not can be carried out continuous production, production efficiency is low；In addition, the complete technique that the raw coke oven gas generated during pyrolysis of coal containing many useful compositions, such as acid, alkaline gas, tar class, benzene class, naphthalenes, washing oil class organic matter, is not completely used to raw coke oven gas export, reclaiming clean.The present invention designs a kind of pyrolysis of coal carbonizing apparatus of coal heat decomposition stove, is arranged in the middle part of furnace body, mainly includes carbonization chamber, outer gas-operated thermal bath facility, interior burning heater, steam gas bag, coil pipe case composition；It is outer gas-operated thermal bath facility that carbonization chamber, which is located at quirk side by fire resisting Heat Conduction Material internalization room exterior wall ring periphery, wherein identical first combustion heater of main one group of outer gas-operated thermal bath facility or more structure and the second combustion heater and gas reversing arrangement are constituted, and are interior burning heater in ringwall ring in carbonization chamber.The present invention is mainly characterized by the open type body structure of design heat-resisting alloy steel steel plate welding manufacture, and using modularization and multistage regulation scheme, can flexible combination according to the needs of production.Environment friendly and economical reduces coking cost.
Description
Technical field
The invention belongs to a kind of coke ovens, and in particular to a kind of carbonizing apparatus of the coal of coal heat decomposition stove.
Background technique
Coal heat decomposition stove (coke oven) currently on the market mostly uses intermittent coking, the proportion of as-fired coal, dehydration, into
Coal, preheating, charing, Jiao Gaizhi, dry each processing step such as to put out relatively independent, not can be carried out continuous production, production efficiency is low；Separately
Outside, the raw coke oven gas generated during pyrolysis of coal alkaline gas, tar class, benzene class, naphthalenes, is washed containing many useful compositions, such as acid
The organic matters such as oils, the complete technique that completely raw coke oven gas export, reclaiming clean are not used.Chinese invention patent discloses
Specification CN102786940B discloses a kind of pyrolysis of coal carbonizing apparatus of coal heat decomposition stove, the Continuous coking including going out complete set
With the complete technique exported to raw coke oven gas, reclaiming clean is recycled.
In the actual use process, which can preferably complete carbonization process, but it has certain ask
Topic: although the external-heat drying oven and external-heat retort its can be by auxiliary heating in drying device and carbonizing apparatus
Control is adjusted in temperature, but it need to be each configured with the auxiliary combustion chamber, while each be equipped with corresponding burner,
Equipment integrated artistic and counter structure are complicated, the heating load of auxiliary combustion chamber and combustion chamber be not easy according to the actual demand of charing into
Row, which is adjusted, causes heat utilization ratio low, and equipment area occupied is big and high production cost.
A large amount of experimental study, spy's invention have been carried out for carbonizing apparatus of this problem above inventor to the coal of coke oven
A kind of novel carbonizing apparatus of the coal of coal heat decomposition stove, can be such that coal is able to carry out in charing adequately by New Heating
It carbonizes, and uses modularization and multistage regulation scheme, according to the needs of production flexible combination.
Summary of the invention
To solve the above-mentioned problems, the present invention provides a kind of novel carbonizing apparatus of the coal of coal heat decomposition stove, it is therefore an objective to can
Heating uniformity is improved, to improve degree of being heated evenly of the coal seam in charing state, while improving the heat transfer efficiency of device.Tool
Body are as follows:
Carbonization chamber is also that original is arranged by the open type body structure of heat-resisting alloy steel steel plate welding manufacture, and in top of the box
Coke export is arranged in coal import, bottom, and pyrolysis gas outlet and deflector, centre setting support plate is arranged in side wall.Each carbonization chamber
Structure is as shown in figure.Side wall pyrolysis gas outlet provides export channel for pyrolysis gas, greatly facilitates pyrolytic reaction.The outlet guide
Pyrolysis gas out controls raw coal gas pressure in furnace and controls the flow velocity of pyrolysis gas in certain range in a certain range.Charing
The flow direction of indoor deflector control pyrolysis gas and flow path, it is ensured that gas is flowed out from side wall；Simultaneously, it is ensured that Pickering
It flows downward, will not be flowed out from side wall.This retort is exported to intermediate piping lane direction setting multilayer, and pyrolysis gas is respectively arranged in each layer
Outlet port (inner proximal and distal end that corresponding carbonization chamber is divided with middle line), horizontal direction interlaced arrangement.Centre is provided with water conservancy diversion
Support plate, it is ensured that solid can stablize the stabilization for flowing from the top to the bottom, while maintaining the steel plate structure of carbonization chamber two sides.
This module steel construction furnace body contains multiple carbonization chamber rooms, the hot wind gas institute that retort section furnace body will enter from bottom of combustion chamber
The heat of carrying, the steel plate wall surface being separated by through hot air chamber and carbonization chamber carry out hot transmitting, pass to the raw coal of carbonization chamber.Raw coal by
After heat, pyrolytic reaction is carried out in carbonization chamber.The retort section steel construction furnace body uses the heat transfer wall of steel construction, and heat transfer efficiency is high,
Substantially increase heat transfer efficiency.Using heat-resisting alloy steel plate, highest can bear 1000 DEG C, be up to 1000 DEG C after can meeting temperature adjustment
The temperature of high-temperature hot-air gas and 450 DEG C~600 DEG C pyrolytic reactions needs.
Raw coal after drying further flows downward, and into high-temperature region, absorbs more heats, own temperature further rises
Pyrolysis gas is precipitated after temperature reaches pyrolysis temperature in height.Pyrolysis gas goes out through two sides deflector water conservancy diversion from middle part, lower part pyrolysis gas
Mouth outflow.After completing pyrolytic reaction, raw coal becomes coke, goes out from coke export.The carbonization chamber of destructive distillation module, wherein high-temperature retorting
Area, high temperature insulating section, cooling by water section is proportional, is described in detail as shown in Figure 2.
The present invention have compared with prior art it is below the utility model has the advantages that
(1) thin layer retorting technique is used, according to the empirical data of 10,000 tons commerical test furnace, carbonization chamber determination is not more than
250mm；
(2) by the way that deflector is arranged in combustion chamber heat air duct, combustion chamber and carbonization chamber heat transfer temperature difference is reduced, carbonization chamber is improved
Temperature distribution evenness；
(3) gas retort section is rectangle, and flue gas is easy to water conservancy diversion, and easy control of temperature avoids overtemperature, and can be according to coal
The difference of kind and the differences of product demand, and meet actual production demand, and can guarantee uniformity of temperature profile in carbonization chamber.
Detailed description of the invention
Attached drawing 1 is skeleton structure schematic diagram of the invention
In figure: 1 being raw coal inlet, 2 be pyrolysis gas outlet, 3 be deflector, 4 be support plate, 5 be coke export.
Specific embodiment
Core of the invention is to provide a kind of novel carbonizing apparatus of the coal of coal heat decomposition stove, can be improved combustion chamber to charing
The heating uniformity of room to improve degree of being heated evenly of the coal seam in carbonization chamber, while guaranteeing the uniform heat exchange of heat-transfer surface, is charcoal
Change room and the high temperature heat transfer wall surface of stable homogeneous is provided.
With reference to the accompanying drawing 1 and specific embodiment the present invention is described in detail, but the invention is not limited to realities
Example explanation.
Embodiment one:
First part's as-fired coal, which is matched, when to be prepared
5 kinds of different coals are such as selected, they are that bottle coal, rich coal, coking coal, one third coking coal, lean coal first mix so respectively
Sieving is broken afterwards, until crushed particles reach 5mm as-fired coal formed below, certain coal heat decomposition stove of the present invention to other proportions with
The as-fired coal of grain size is equally applicable, does not constitute the limitation to as-fired coal powder needed for coal heat decomposition stove of the present invention.
Second part coal dewatering
Coke oven currently on the market mostly uses intermittent coking, and as-fired coal material is wet coal, and energy consumption is big, increases coking
Cost, first pass through as-fired coal dehydration device in advance and the as-fired coal for entering this coal heat decomposition stove be dehydrated, play energy-saving
Effect.
Part III as-fired coal is into coal, preheating, adjusting, cooling
Dewatered as-fired coal temperature after conveying can generally be down to room temperature, and temperature may be lower, so needs pair
As-fired coal is preheated before entering carbonization chamber, is adjusted, is cooled down.
First segment as-fired coal is used to input dewatered as-fired coal into coal coal intake device
Second section as-fired coal preheating preheating device is set to the lower section of coal intake device and is located at the top of coal heat decomposition stove.Preheating
Device preheating is to the as-fired coal that temperature reduces after conveying.
As-fired coal after the preheating of third section adjusts the setting of as-fired coal surge bunker and is located at preheating device lower part in upper of furnace body, enters
Furnace coal surge bunker is used to adjust the amount that as-fired coal is filled into the carbonization chamber of coal heat decomposition stove.
Embodiment two:
In order to realize the adjusting of each charing chamber pressure, configuration computer control system is also needed, in coke furnace carbonization chamber coking
Under conditions of period is certain, the raw coke oven gas amount that coal generates in carbonization chamber retort process is one and descending gradually reduces fluctuation
The process of variation is adjusted by computer control system according to coking time locating for each carbonization chamber and pressure changing
The size of each water seal valve disc aperture reaches control raw coke oven gas in water-sealed valve passageway section and then realizes the single carbonization chamber of control
The purpose of pressure.
It is more acurrate in order to make to carbonize chamber pressure adjusting, biggish deviation is prevented, also needs to detect each coke oven charing
The instantaneous pressure of room, i.e. setting pressure measuring unit, the instant pressure of each carbonization chamber are measured by pressure measuring unit, according to the instant pressure
Power and target pressure difference issue control instruction by computer control system, by opening for pneumatic actuator control water seal valve disc
Degree, the final stable regulation realized to charing chamber pressure.
Coke oven individually carbonizes chamber pressure control, realizes the stabilization of coke oven coking chamber pressure, solves due to pressure oscillation band
The some adverse effects come.It prevents since coke furnace carbonization chamber negative pressure causes furnace wall string to leak, improves furnace roof environment, improve automation
Operation is horizontal, extends coke oven service life.
Embodiment three:
According to furnace scheme is opened, by adjusting combustion-supporting air quantity, firing tunnel in coking furnace amount, tempering air amount, hot wind Indoor Temperature is adjusted
Degree, then operate the adjustings such as revolving speed by hot wind room temperature, charing room temperature, coke pusher and carbonize room temperature.In this process
In, control 650 DEG C, 750 DEG C, 850 DEG C, 950 DEG C of high-temperature hot-air temperature degree etc., be continuously improved bottom of carbonization chamber temperature to 300 DEG C,
350 DEG C, 400 DEG C, 450 DEG C, 500 DEG C etc., in this process, process stable operation 5-10 hours is maintained into each stage
Runing time.950 DEG C of gas retort high-temperature hot-air temperature degree to be regulated, bottom of carbonization chamber temperature to 500 DEG C of continuous and steady operations 5
After hour, into all data test process that can carry out gas retort.
After stabilization process, pass through temperature, the pressure of record gas retort a point in real time, rate-of flow, the characterization such as coke pushing speed
The state of gas retort, degree of pyrolysis and orchid by characterization raw coal such as the analysis of measurement raw coal full constituent, the full constituent analyses of semi-coke
Charcoal quality by measurement gas composition and calculates calorific value characterization gas quality, by measuring the specific gravity of product tar, density, containing
Ash quantity etc. characterizes tar quality.After test passes, into normal operating condition.
Claims (6)
1. a kind of pyrolysis of coal carbonizing apparatus of coal heat decomposition stove, it is characterised in that the heating device is using heat-resisting alloy Steel material
The porous module furnace structure of welding manufacture is separated by by multiple charing cell structures and is welded to form.Setting raw coal inlet, pyrolysis gas go out
Mouth, deflector, support plate, coke export.
2. the furnace structure such as claim 1 is characterized in that, it is the porous module using heat-resisting alloy Steel material welding manufacture,
It is separated by by multiple charing cell structures and is welded to form.And burning hot air chamber height and carbonization chamber height are proportional.
3. the carbonization chamber structure feature such as claim 2 is, involved multiple carbonization chambers, each carbonization chamber dischargeable capacity is not small
In 4m3。
4. the heat-resisting alloy steel material selection 310S as described in claim 1, but it is not limited only to this.
5. deflector according to claim 1, it is characterised in that deflector controls the flow direction and flowing road of pyrolysis gas
Diameter, it is ensured that gas is flowed out from side wall；Simultaneously, it is ensured that Pickering flows downward, and will not flow out from side wall.
6. charing cell structure according to claim 1, it is characterised in that this retort is more to the setting of intermediate piping lane direction
2 pyrolysis gas outlet ports (inner proximal and distal end that corresponding carbonization chamber is divided with middle line), horizontal direction is arranged in layer outlet, each layer
Interlaced arrangement.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910370462.5A CN110079353A (en) | 2019-05-10 | 2019-05-10 | A kind of pulverized coal pyrolysis charing chamber device |
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|---|---|---|---|
| CN201910370462.5A CN110079353A (en) | 2019-05-10 | 2019-05-10 | A kind of pulverized coal pyrolysis charing chamber device |
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| CN110079353A true CN110079353A (en) | 2019-08-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376206A (en) * | 2021-05-18 | 2021-09-10 | 鞍钢集团北京研究院有限公司 | Coal sample coking time measuring device and method |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027198Y (en) * | 2007-04-19 | 2008-02-27 | 佳木斯大学 | External-burning coke oven |
| CN103740384A (en) * | 2014-01-29 | 2014-04-23 | 刘运良 | Vertical coke discharging system for coking furnace |
| CN103923675A (en) * | 2014-03-24 | 2014-07-16 | 陈振平 | Fine coal low-temperature destructive distillation kiln |
| CN107033939A (en) * | 2016-11-15 | 2017-08-11 | 长安大学 | A kind of pulverized coal pyrolysis method and device |
-
2019
- 2019-05-10 CN CN201910370462.5A patent/CN110079353A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201027198Y (en) * | 2007-04-19 | 2008-02-27 | 佳木斯大学 | External-burning coke oven |
| CN103740384A (en) * | 2014-01-29 | 2014-04-23 | 刘运良 | Vertical coke discharging system for coking furnace |
| CN103923675A (en) * | 2014-03-24 | 2014-07-16 | 陈振平 | Fine coal low-temperature destructive distillation kiln |
| CN107033939A (en) * | 2016-11-15 | 2017-08-11 | 长安大学 | A kind of pulverized coal pyrolysis method and device |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113376206A (en) * | 2021-05-18 | 2021-09-10 | 鞍钢集团北京研究院有限公司 | Coal sample coking time measuring device and method |
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Application publication date: 20190802 |
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