CN209702654U - A kind of high temperature carbonization assembly of reduction furnace - Google Patents
A kind of high temperature carbonization assembly of reduction furnace Download PDFInfo
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- CN209702654U CN209702654U CN201920179778.1U CN201920179778U CN209702654U CN 209702654 U CN209702654 U CN 209702654U CN 201920179778 U CN201920179778 U CN 201920179778U CN 209702654 U CN209702654 U CN 209702654U
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Abstract
The utility model provides a kind of high temperature carbonization assembly of reduction furnace, comprising: drying oven, for supplied materials to be carried out preheating and drying；Carbonize reduction furnace, for the material after drying oven preheating and drying to be carried out charing reduction, the charing reduction furnace includes coal gas collecting region, combustion zone and material cooling zone arranged up and down, and external coal gas cooling device, the coal gas collecting region is used to collect the heating gas that combustion zone charing reduction reaction generates, and by heating gas by being delivered to material cooling zone after coal gas cooling device cooling；Quenching storehouse carries out quenching cooling for that will carbonize the high temperature thermal material after restoring.The high-temp waste gas that the utility model generates when can be by burning, which is introduced in drying oven, is dried and heated material, shortens the material charing recovery time；The coal gas that the device is generated in high temperature carbonization is recycled simultaneously, energy efficiency.
Description
Technical field
The utility model relates to coal chemical industry and metallurgical reduction technique fields, and in particular to a kind of high temperature carbonization reduction furnace dress
It sets.
Background technique
Chinese coal reserves account accounts for the 12% of worldwide coal resource, and China's low-order coal reserves account accounts for 50% left side of coal reserves
The right side, yield account for the 30% of current total amount.It is seen by the forming age of CHINESE COAL, with Jurassic Coal reserves maximum, accounts for about the whole nation and visited
45% or so of bright reserves, for the coal formed by this epoch in addition to only a few anthracite, most of remaining is lignite, length
The low-order coals such as flame coal, dross coal and weakly caking coal.In Regional Distribution, reserves are largely focused on Inner Mongol, Shaanxi, Xinjiang, sweet
Respectful, Shanxi, six, Ningxia province (area), and these areas are the serious deficient places of China's water resource, are constrained to a certain extent
Processing upgrading industrial expansion is carried out using these low-order coals.
Low-order coal is due to high-moisture, high-volatile, low heat value, and easily spontaneous combustion the characteristics of, to be unsuitable for long term storage
And long-distance transportation, it is considered a kind of low-grade coal resource for a long time, is only used as pit-head power station fuel and near coal-mine gasified raw material at present,
Limit the rational exploitation and utilization of low order coal resource.How Efficient Conversion is just important at one of coal utilization using low-order coal
Problem.
China is steel big producer simultaneously, thus is also that steel scrap utilizes big country.Steel scrap supply much meets not at present
The needs of steel production.Although China's iron ore deposit reserves are relatively abundanter, its grade is low, and previous technique is required with Gao Pin
Position iron ore is raw material, therefore China's low-grade iron ore resource discomfort abundant cooperates the raw material of existing blast furnace ironmaking, and China needs
To rely on import reduced iron for a long time to meet the needs of domestic.In order to change the situation that China relies on import reduced iron for a long time, fit
When development utilization low-grade iron ore ironmaking technology be necessary.And the trend of current ironmaking technology is refined by blast furnace indirect reduction
Iron technology turns to direct reduction processes of Iron ores, therefore develops direct reduction processes of Iron ores to develop low-grade iron ore even more necessity
's.
The low grade oxidation ore goods and materials source in China largely exists on rich coal area periphery, and coal is metallurgical reduction field institute again
Therefore the main source of the reducing agent needed couples direct-reduction metallurgical technology using pyrolysis of coal technology to develop rich coal area week
Low-grade oxide ore existing for side will be the preferred plan for developing low-order coal and utilizing.This scheme not only solves low-order coal
High value added utilization problem, while solving the problems, such as the development and utilization of China's low-grade oxide ore abundant again.
Currently, the technology of pyrolysis of coal coupling metallurgy reduction is more.It, should such as the utility model of Publication No. CN103451332A
Utility model discloses a kind of system and method that blast furnace ironmaking is carried out using small particle bituminous coal, which includes pyrolysis oven, heat
The outlet of solution furnace semicoke be connected to crusher entrance, and crusher outlet is connected to vibrating sieving machine entrance, the finely-ground coke of vibrating sieving machine export and
The blast furnace entrance that dusts is connected, and the bulky grain semicoke outlet of vibrating sieving machine is connected with former entrance, former outlet be sintered
Furnace entrance is connected, sintering outlet of still be connected with the sinter entrance of blast furnace, the exhanst gas outlet of blast furnace is divided into two-way, all the way with
The connection of pyrolysis oven gas access, another way are connected to pyrolysis oven exhanst gas outlet；Solve a large amount of small particle coals that coal mining generates
Utilizing question；The problem of alleviating coal suitable for blowing resource scarcity provides a paths for the utilization of pyrolysis of coal semicoke；By semicoke
Powder and iron ore mixed-forming are simultaneously sintered use, and resource is made to be fully used；The flue gas of blast furnace ironmaking is used for bituminous coal
Pyrolysis, the heat in recovered flue gas reduces energy consumption, improves utilization efficiency.
The utility model of Publication No. CN103710037, the utility model provide a kind of fluidized bed upgrading benefit of low order
Use system and method.The utility model is that the washing system, pyrolysis system and ironmaking system of low-order coal are coupled together.Low-order coal
Coal preparation is carried out first, and the grading of coal is completed while discharge refuse.To the coal dust of different-grain diameter, it to be used for coking system
Controlling takes coke, and low temperature pyrogenation produces semicoke in participation.It is pyrolyzed obtained semicoke and is respectively used to sintering coal and blowing coal blending,
It is pyrolyzed byproduct coal gas and is sent into hot-blast stove supply burning, wherein the waste heat that sintering and coking process system generate is recycled for washing
System and pyrolysis system are selected, final sinter, hot wind, injection coal and coke are sent into blast furnace and are smelted iron.The utility model is realized
The upgrading of low-order coal sorting, classification, drying and pyrolysis, low-order coal is utilized instead of part high-order coal, can effectively reduce a ton iron
Cost, and steel and iron industry can be slowed down to the pressure of high-order coal demand.
The shortcomings that above-mentioned offer scheme, is:
1, these technologies are all using the coke powder of beans pyrolysis generation as the injection coal of blast furnace, and ironmaking technology uses
Be traditional blast furnace indirect reduction iron ore, what is obtained is the higher pig iron of phosphorus content, this pig iron as steelmaking feed,
It also needs just to can be used by complex process process, production cost is higher；
It 2, is all using blast furnace exiting flue gas as the heat source of pyrolysis, the pyrolysis gas generated in pyrolytic process is dilute by flue gas
It releases, the heat vale of mixture of generation is low, and active principle content is low, and use value is low；
3, requiring high-grade iron ore deposit is raw material, is unable to fully utilize low-grade oxide ore.
Utility model content
The utility model provides a kind of energy-efficient high temperature carbonization assembly of reduction furnace.
In order to solve the above technical problems, the utility model adopts the following technical solution:
A kind of high temperature carbonization assembly of reduction furnace, comprising:
Drying oven, for supplied materials to be carried out preheating and drying；
Reduction furnace is carbonized, for the material after drying oven preheating and drying to be carried out charing reduction, the charing reduction furnace packet
Coal gas collecting region, combustion zone and material cooling zone arranged up and down and external coal gas cooling device are included, the coal gas collecting region
The heating gas generated for collecting combustion zone charing reduction reaction, and by heating gas by being delivered to after coal gas cooling device cooling
Material cooling zone；
Quenching storehouse carries out quenching cooling for that will carbonize the high temperature thermal material after restoring.
Further, the high-temp waste gas that the heat source of the drying oven is generated from the burner of the combustion zone.
Preferably, the burner uses heat-accumulating burner.
Preferably, it is provided with gas collection distributing device in the coal gas collecting region, the gas collection distributing device is for collecting charing reduction
Coal gas in furnace is simultaneously delivered to coal gas cooling device.
Preferably, the combustion zone is divided into two combustion zones up and down of connection by horizontal partition wall, can also be by perpendicular
Straight partition wall is divided into the combustion zone of left and right two of connection.
Further, the coal gas cooling device includes heat exchanger and cooling tower, the hot coal that the coal gas collecting region is collected
Gas is sent into the material cooling zone, institute by being sent into cooling tower after heat exchanger and air heat exchange, and after passing through cooling tower cooler
The hot-air for stating heat exchanger heating is sent into the combustion zone.
Preferably, the gas outlet of the cooling tower is also connected to the combustion zone.
Preferably, the quenching storehouse uses steam quenching storehouse.
From the above technical scheme, the high-temp waste gas generated when the utility model can be by burning is introduced in drying oven
Material is dried and heated, the material charing recovery time is shortened；The coal that the device is generated in high temperature carbonization simultaneously
Gas is recycled, energy efficiency.
Detailed description of the invention
Fig. 1 is the structural schematic diagram of the utility model embodiment 1, shows structure in the stove；
Fig. 2 is the side view of combustion zone in Fig. 1；
Fig. 3 is the structural schematic diagram of the utility model embodiment 2, shows structure in the stove；
Fig. 4 is the side view of combustion zone in Fig. 3.
Specific embodiment
A kind of preferred embodiment of the utility model is described in detail with reference to the accompanying drawing.
Embodiment 1
As shown in Figure 1, the high temperature carbonization assembly of reduction furnace include the drying oven 10 for being sequentially arranged and being connected to from top to bottom,
Carbonize reduction furnace 20 and steam quenching storehouse 50.
The drying oven 10 is to be also connected with dust-extraction unit 101 for material being dried and preheating device,
300 DEG C or so of high-temp waste gas 303, high temperature caused by heat-accumulating burner 30 of the heat source of the drying oven from charing reduction furnace
Exhaust gas enters 101 dust removal process of dust-extraction unit after drying oven exchanges heat, and empties by waste gas circulation blower 103, and after drying
About 260 DEG C or so thermal materials enter charing reduction furnace.
The charing reduction furnace 20 is used to the material after drying oven preheating and drying carrying out charing reduction comprising up and down according to
Coal gas collecting region 21, combustion zone 22 and the material cooling zone 23 of secondary arrangement and external coal gas cooling device 40, the coal gas are received
Ji Qu be used for collect combustion zone charing reduction reaction generate heating gas, and by heating gas by coal gas cooling device cool down after it is defeated
It send to material cooling zone.
The charing reduction furnace 20 is the main shaft furnace structure for carrying out high temperature carbonization and reduction to material, four in furnace body
Week is made of refractory brick 201, isolation envelope 202, common brick 203 and guard post 204 for heat-insulated and protection furnace body respectively from the inside to the outside.
It is provided with gas collection distributing device 211 in the coal gas collecting region, the gas collection distributing device is for collecting in charing reduction furnace
Coal gas and be delivered to coal gas cooling device.In the present embodiment, the coal gas gas exit that passes through furnace body that gas collection distributing device is collected
205 outputs.
The combustion zone 22 is the region for carrying out charing reduction reaction to material, is divided by horizontal partition wall 221
Reinforcement block 223 is arranged in each combustion zone for two combustion zones 222 up and down of connection, for enhancing inner structural strength, referring to scheming
2.Divided by horizontal partition wall every layer of upper layer and lower layer of combustion chamber is equipped with a heat-accumulating burner 30, two burnings up and down of each combustion chamber
Mouth is arranged in the same side, and upper and lower two heat-accumulating burner alternate combustions, the burning coal gas needed is from upper heat-accumulating burner into generation is given up
Gas goes out from lower heat-accumulating burner or bottom in and top out.The burner of odd number combustion chamber is located at furnace body side, and even number combustion chamber burner is located at furnace
The body other side.
The heat-accumulating burner 30 is to provide the heat power supply device of high temperature carbonization, and burner is passed through coal gas 301 and hot-air 302,
By the accounting of regulating gas, temperature is controlled at 1100 DEG C or so.
The coal gas cooling device 40 includes heat exchanger 41 and cooling tower 42,260 DEG C of left sides that the coal gas collecting region is collected
By heat exchanger 41 and after air heat exchange, feeding cooling tower further cools down right heating gas, 40 DEG C or so of coal gas after cooling
301, which pass through coal gas circulating fan 401, which is sent to recycle in material cooling zones 23 and the heat-accumulating burner 30 carbonized in reduction furnace, makes
With heat exchanger 41 and the hot-air 302 after air heat-exchange are sent into the air intake of heat-accumulating burner through air circulation fans 411
302。
Steam quenching storehouse 50 is that 500 DEG C or so the further quenchings of material for sending discharge device 51 are cooled to
80 DEG C or so, the belt feeder 60 is for material after cooling to be sent into warehouse for finished product.
Embodiment 2
As shown in Figures 3 and 4, embodiment 2 is the difference from embodiment 1 is that the combustion zone form used is different, embodiment 2
Combustion zone 22 is the combustion zone of left and right two that connection is divided by vertical partition wall 223, and bilateral symmetry respectively sets a heat-accumulating burner,
The two heat-accumulating burner alternate combustions in left and right, the left heat-accumulating burner of coal gas is into the right heat-accumulating burner of exhaust gas goes out or the right side goes out into a left side.Combustion is taken into account
Room burning area is burnt without dead angle, avoids combustion gas waste.
Embodiment described above is only that preferred embodiments of the present invention are described, not practical to this
Novel range is defined, and under the premise of not departing from the spirit of the design of the utility model, those of ordinary skill in the art are to this
The various changes and improvements that the technical solution of utility model is made should all fall into the guarantor that claims of the utility model determine
It protects in range.
Claims (9)
1. a kind of high temperature carbonization assembly of reduction furnace characterized by comprising
Drying oven, for supplied materials to be carried out preheating and drying；
Reduction furnace is carbonized, for the material after drying oven preheating and drying to be carried out charing reduction, the charing reduction furnace includes upper
Coal gas collecting region, combustion zone and the material cooling zone of lower arrangement and external coal gas cooling device, the coal gas collecting region are used for
The heating gas that combustion zone charing reduction reaction generates is collected, and by heating gas by being delivered to material after coal gas cooling device cooling
Cooling zone；
Quenching storehouse carries out quenching cooling for that will carbonize the high temperature thermal material after restoring.
2. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that the heat source of the drying oven comes from institute
State the high-temp waste gas that the burner of combustion zone generates.
3. high temperature carbonization assembly of reduction furnace according to claim 2, which is characterized in that the burner is burnt using accumulation of heat
Mouth.
4. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that be provided in the coal gas collecting region
Gas collection distributing device, the gas collection distributing device are used to collect the coal gas in charing reduction furnace and are delivered to coal gas cooling device.
5. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that the combustion zone passes through horizontal partition wall
It is divided into two combustion zones up and down of connection.
6. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that the combustion zone passes through vertical partition wall
It is divided into the combustion zone of left and right two of connection.
7. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that the coal gas cooling device includes changing
Hot device and cooling tower, the heating gas that the coal gas collecting region is collected are sent into cooling tower after passing through heat exchanger and air heat exchange, and
By being sent into the material cooling zone after cooling tower cooler, the hot-air of the heat exchanger heating is sent into the combustion zone.
8. high temperature carbonization assembly of reduction furnace according to claim 7, which is characterized in that the gas outlet of the cooling tower also with
The combustion zone connection.
9. high temperature carbonization assembly of reduction furnace according to claim 1, which is characterized in that the quenching storehouse uses steam quenching
Storehouse.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920179778.1U CN209702654U (en) | 2019-01-31 | 2019-01-31 | A kind of high temperature carbonization assembly of reduction furnace |
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| CN201920179778.1U CN209702654U (en) | 2019-01-31 | 2019-01-31 | A kind of high temperature carbonization assembly of reduction furnace |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652099A (en) * | 2019-01-31 | 2019-04-19 | 新疆乾海环保科技有限公司 | A kind of high temperature carbonization assembly of reduction furnace |
| CN113897203A (en) * | 2021-09-08 | 2022-01-07 | 华中农业大学 | Biomass semi-gasification enhanced self-heating carbonization device, control method and application |
-
2019
- 2019-01-31 CN CN201920179778.1U patent/CN209702654U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109652099A (en) * | 2019-01-31 | 2019-04-19 | 新疆乾海环保科技有限公司 | A kind of high temperature carbonization assembly of reduction furnace |
| CN113897203A (en) * | 2021-09-08 | 2022-01-07 | 华中农业大学 | Biomass semi-gasification enhanced self-heating carbonization device, control method and application |
| CN113897203B (en) * | 2021-09-08 | 2024-03-08 | 华中农业大学 | Biomass semi-gasification reinforced self-heating carbonization device, control method and application |
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