CN207659388U - A kind of superfine powder fast pyrogenation reaction system - Google Patents

Abstract

The utility model is related to a kind of superfine powder fast pyrogenation reaction systems, including：The pyrolytic reaction system includes：Feed system, pyrolysis oven, pyrolysis oil gas processing system and semicoke processing system, the feed system include：The coal pulverizer and row powder fan of interconnection；The coal dust spout of the pyrolysis oven is connected with the row powder fan, and the inner cavity of the pyrolysis oven is equipped with heat accumulation type radiant tube vertically, and the fines sprayed into the row powder fan is pyrolyzed；The semicoke processing system includes：Waste heat boiler and heat exchange of heat pipe, wherein the waste heat boiler is connected with the semicoke lock hopper of the pyrolysis furnace bottom setting, the high-temperature semi-coke primary cooling generated to pyrolysis；The heat exchange of heat pipe is connected with the waste heat boiler, is cooled down to the high-temperature semi-coke depth after primary cooling.The utility model reduces wear extent of the coal dust to heat accumulation type radiant tube, and pyrolytic reaction is abundant and makes full use of semicoke sensible heat, and energy utilization rate is high.

Description

A kind of superfine powder fast pyrogenation reaction system

Technical field

The utility model belongs to low temperature pyrogenation processing technology field in coal chemical industry, fossil fuel, is related to a kind of carbon-containing fuel Fast pyrogenation reaction process, and in particular to a kind of superfine powder fast pyrogenation reaction system, to produce tar, pyrolysis gas and half It is burnt.

Background technology

The energy resource structure present situation in China is rich coal, oil-poor, gas, world today's petroleum resources gradually decrease less, increasingly deficient, China's petroleum resources shortage is particularly acute, and a large amount of petroleum resources rely on import.Petroleum resources are deficient seriously to restrict China's warp Ji and social development, while the burning of a large amount of fossil fuels, and bring serious environmental problem, such as dust, PM2.5, acid rain, temperature Room gas etc..Coal liquifaction, coal gas technology, pyrolysis, gasification, liquefaction technology etc. are greatly developed, me on the one hand can be effectively alleviated State's petroleum resources shortage, the poverty-stricken situation of heavy dependence import；On the other hand the utilization for reducing the fossil fuels such as coal, can be effective Solve problem of environmental pollution.

Currently, to realize the high-efficiency cleaning trans-utilization of the carbon-containing fuels such as low-order coal, a variety of comprehensive coal chemical industries have been developed Technology, fine coal fast pyrolysis technology are exactly one of them.The more existing pyrolytic technique of fine coal fast pyrolysis technology is compared, and is solved The unserviceable problem of granular material, fine coal fast pyrolysis technology mainly have two kinds of heating sides of gas heat carrier and solid thermal carriers Formula, but using gas as the type of furnace of heat carrier, because condensate recovery system is huge, it is pyrolyzed the problems such as gas calorific value is low, and tar yield is low, it is difficult It is demonstrated with further genralrlization；Using solid as the type of furnace of heat carrier, then there is raw material and heat carrier uniformly mixes, the problems such as separation, And it limits it and further develops.

Utility model content

The utility model is directed to problem of the prior art, it is proposed that a kind of superfine powder fast pyrogenation reaction system solves Raw material and heat carrier batch mixing problem, and use heat accumulating type high-voltage high-speed pyrolysis oven so that device minimizes, and considerably reduces The technological process of subsequent tail gas clean-up reduces equipment and technique cost；And the coking and abrasion of coal can be reduced；Meanwhile The feeding manner of unique ultra-fine fine coal is set and using primary cooling and the depth type of cooling, improves the using energy source of semicoke Rate.

It is at least to solve one of above-mentioned technical problem, the technical solution that the utility model is taken is：

The utility model proposes a kind of superfine powder fast pyrogenation reaction systems, including：Feed system, pyrolysis oven and semicoke Processing system, wherein the feed system includes：The coal pulverizer and row powder fan of interconnection, the coal pulverizer is ground The fines arrived is sprayed into through the row powder fan in the pyrolysis oven；The coal dust spout of the pyrolysis oven and the row powder fan phase Even, the inner cavity of the pyrolysis oven is equipped with heat accumulation type radiant tube vertically, and the fines sprayed into the row powder fan is pyrolyzed；Institute Stating semicoke processing system includes：Waste heat boiler and heat exchange of heat pipe, wherein the waste heat boiler is arranged with the pyrolysis furnace bottom Semicoke lock hopper be connected, to pyrolysis generate high-temperature semi-coke carry out primary cooling；The heat exchange of heat pipe and the waste heat boiler It is connected, depth cooling is carried out to the high-temperature semi-coke after primary cooling.

Further, the heat accumulation type radiant tube includes：Center heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, In, the center heat accumulation type radiant tube is set to the middle part of the inner cavity, and the circumferential layer heat accumulation type radiant tube is in described Heart heat accumulation type radiant tube is arranged circumferentially about, and the circumferential layer heat accumulation type radiant tube includes：More heat accumulation type radiant tubes, adjacent two Root heat accumulation type radiant tube has 15 ° -60 ° of center of circle angle.

Further, the number of plies of the circumferential layer heat accumulation type radiant tube is 1-10 layers, and the spacing distance between every layer is equal.

Further, the number of the coal dust spout is multiple, may be contained within the top of the pyrolysis oven, and apart from described In same level at the top of pyrolysis oven at 0.1-0.5m.

Further, the coal dust jet pipe being connected with the row powder fan, and the coal dust are equipped in the coal dust nozzle Jet pipe has 20-40 ° of angle with the center line of the pyrolysis oven.

Further, further include：Pyrolysis oil gas processing system comprising：Oil and gas separating system, pyrolysis gas purification system and Tar well, wherein the oil and gas separating system is connected with the pyrolysis oil gas vent of the pyrolysis oven, the pyrolysis gas purification System is connected with the pyrolysis gas outlet of the oil and gas separating system, the tar of the tar well and the oil and gas separating system Outlet is connected.

Further, the feed system further includes：Run coal bin, drier and the feeder being sequentially connected, wherein described Feeder is connected with the coal pulverizer.

Further, the steam (vapor) outlet of the waste heat boiler is connected with the drier, when by primary cooling high-temperature semi-coke The steam of generation is sent into as heat source in the drier.

The utility model includes at least following advantageous effect：

1）The utility model pyrolysis oven uses rational vertical tube arrangement, reduces abrasion of the coal dust to heat accumulation type radiant tube Amount reduces cost of equipment maintenance, increases service life of equipment；

2）The utility model pyrolysis oven is designed to that pressure resistant vessel, gas pressure increase, and volume is reduced so that device is small-sized Change, considerably reduce the flow of subsequent tail gas clean-up technique, reduces equipment and technique cost；

3）The coal that the utility model is taken is the fine breeze of 100-200 mesh, the residence time in stove at high temperature It is very short, pyrolytic reaction is quickly completed, furnace body height is reduced；

4）Multiple coal dust jet pipes of the utility model have angle with the horizontally or vertically center line of the pyrolysis oven, are formed Screw type cutting mode increases residence time of the material in pyrolysis oven, keeps pyrolytic reaction abundant；

5）The utility model semicoke processing procedure includes：Primary cooling and depth cooling, and by primary cooling when generate Steam is used as the heat source of drier, makes full use of semicoke sensible heat, energy utilization rate high.

Description of the drawings

Fig. 1 is the utility model superfine powder fast pyrogenation reaction system structure diagram.

Fig. 2 is the utility model superfine powder fast pyrogenation reaction system structural schematic diagram.

Fig. 3 is the mounting structure schematic diagram of the utility model heat accumulation type radiant tube.

Wherein, run coal bin 1, raw coal outlet 101, drier 2, the first import 201, the second import 202, dry outlet 203, Feeder 3 exports 402, row powder fan 5, wind to coal import 301, to coal export 302, coal pulverizer 4, coal-grinding import 401, coal-grinding Machine import 501, fan outlet 502, pyrolysis oven 6, coal dust spout 601, pyrolysis oil gas vent 602, center heat accumulation type radiant tube 603, circumferential layer heat accumulation type radiant tube 604, coal dust jet pipe 605, oil and gas separating system 7, pyrolysis oil and gas import 701, pyrolysis gas go out Mouth 702, tar outlet 703, tar well 8, pyrolysis gas purification system 9, waste heat boiler 10, semicoke entrance 1011, steam go out Mouth 1012, outlet 1013, heat exchange of heat pipe 11, semicoke lock hopper 12.

Specific implementation mode

In order to enable those skilled in the art to better understand the technical solutions of the present invention, below in conjunction with specific implementation The utility model is described in further detail for example.The embodiments described below is exemplary, and is only used for explaining this practicality It is novel, and should not be understood as limiting the present invention.Particular technique or condition are not specified in embodiment, according to this field Technology or condition described in interior document are carried out according to product description.

Embodiment according to the present utility model, Fig. 1 are the utility model superfine powder fast pyrogenation reaction system structure diagram, Fig. 2 be the utility model superfine powder fast pyrogenation reaction system structural schematic diagram, referring to Fig.1 with shown in 2, it is described in the utility model Pyrolytic reaction system includes：Feed system, pyrolysis oven, pyrolysis oil gas processing system and semicoke processing system.

Embodiment according to the present utility model, with reference to shown in Fig. 2, feed system described in the utility model includes：Run coal bin, Drier, feeder, coal pulverizer and row powder fan, wherein be crushed and remove iron, except the removal of impurities such as sawdust are handled by preliminary to raw coal Afterwards, it is sent in run coal bin, the first import of the drier is connected with the outlet of the raw coal of the run coal bin, is done to raw coal Dry processing；The dry outlet to coal import and the drier of the feeder is connected, the coal-grinding import of the coal pulverizer and Being connected to coal export for the feeder, the raw coal after drying is sent into through feeder in the coal pulverizer and is milled into fines； The fans entrance of the row powder fan is connected with the outlet of the coal-grinding of the coal pulverizer, and fines is sent into the row powder fan.

The cross section of some embodiments according to the present utility model, pyrolysis oven described in the utility model can be round or side Shape, preferably circular cross section, height 2-10m, residence time of the material in the furnace body are 2s or more；This practicality is new Type device has fully considered the reaction effect of material under high pressure, and the cross section of the furnace body, which is arranged to circle, can bear bigger The allowable stress of pressure, the present apparatus is<0.5MPa, but according to material requirements, allowable stress can be properly increased；In normal pressure Under, gas density is constant, and after being arranged to pressurized equipment, gas pressure increases, and volume is reduced, and is equivalent to gas volume under normal pressure 1/5, so can accomplish that device minimizes under identical treating capacity, considerably reduce the stream of subsequent tail gas clean-up technique Journey reduces equipment and technique cost.

Some embodiments according to the present utility model, furnace pressure have an impact the pyrolysis yield of coal, and pressure increases tar Yield is reduced, and semicoke and pyrolysis gas yield increase, and more semicoke may be selected pneumatic conveying mode and be sent into boiler of power plant as former Material generates electricity for boiler combustion, solves the outlet problem of pyrolysis char；Pressure increases simultaneously, and not only char yeild increases, and And its intensity also improves, this is because difficulty is precipitated in volatile matter, makes to act on reinforcement between liquid product, it is anti-to have developed thermal polycondensation It answers, this is more conducive to the Geldart-D particle of semicoke or is made outside moulded coal and sells.

Embodiment according to the present utility model, with reference to shown in Fig. 2, the top of pyrolysis oven described in the utility model is equipped with uniformly It is disposed with multiple coal dust spouts, preferably four, and may be contained within same at 0.1-0.5m at the top of the pyrolysis oven On one horizontal plane, the coal dust jet pipe that is connected with the row powder fan is equipped in the coal dust nozzle, and the coal dust jet pipe and There is the horizontally or vertically center line of the pyrolysis oven angle α, the size of angle α to depend on heat accumulation type radiant tube in pyrolysis oven Arrange quantity, the utility model is preferably 20<α<40°；The multiple coal dust spout passes through the coal dust jet pipe and row's powder The fan outlet of wind turbine is connected, and is sprayed into the fines in the pyrolysis oven by the coal dust jet pipe through the row powder fan It is pyrolyzed；Some embodiments according to the present utility model, multiple coal dust jet pipes described in the utility model with the pyrolysis The horizontally or vertically center line of stove has angle, screw type cutting mode is formed, when increasing stop of the material in pyrolysis oven Between, keep pyrolytic reaction abundant.

Embodiment according to the present utility model, Fig. 3 are the mounting structure schematic diagram of the utility model heat accumulation type radiant tube, ginseng Shown in Fig. 2 and Fig. 3, in the inner cavity of the pyrolysis oven, equipped with the heat accumulation type radiant tube being vertically arranged, one end is set The coal dust nozzle in the pyrolysis oven is set, the other end is arranged in the taper semicoke exit of the pyrolysis oven, is convenient for control point Fire；The heat accumulation type radiant tube includes：Center heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein the center stores Hot type radiant tube is set to the middle part of the inner cavity, at the center of the preferably described inner cavity.

Embodiment according to the present utility model, with reference to shown in Fig. 3, circumferential layer heat accumulation type radiant tube described in the utility model encloses It is circumferentially evenly arranged around the center heat accumulation type radiant tube, and the circumferential layer heat accumulation type radiant tube includes：More heat accumulating types Radiant tube, adjacent two heat accumulation type radiant tubes angle β in the center of circle having the same, value range be 15 ° -60 °, preferably 30 ° - 60 °, β values are too small, and heat accumulation type radiant tube quantity can not only increased, but also easily cause local temperature raising, cause temperature field Unevenness, β values are excessive, and the phenomenon that temperature field can be caused inadequate occurs.

Some embodiments according to the present utility model, with reference to shown in Fig. 3, the circle of the circumferential layer heat accumulation type radiant tube formation Radius be r, the radius of the furnace body is R, wherein 1/4<r/R<4/5, preferably 2/5<r/R<3/4, further preferred R/R is 1/2, and suitable ratio makes temperature field in furnace evenly.

It is understood that when circumferential layer heat accumulation type radiant tube described in the utility model is multilayer, the half of the circle of formation Diameter r is the radius of greatest circle.

Some embodiments according to the present utility model, can be in the center of circle to increase fine coal treating capacity with reference to shown in Fig. 3 Under conditions of angle β is constant, one layer, two or more layers circumferential layer heat accumulation type radiant tube are circumferentially added in the stove, The number of plies of the circumferential layer heat accumulation type radiant tube is 1-10 layers, preferably 1-3 layers, between every layer of circumferential layer heat accumulation type radiant tube Spacing distance is equal, it can be understood as, such as：When the circumferential layer heat accumulation type radiant tube is two layers, then the second layer is justified Perisphere heat accumulation type radiant tube and the interval of first layer circumferential layer heat accumulation type radiant tube are equal to the first layer circumferential layer heat accumulating type spoke Penetrate the interval of pipe and center heat accumulation type radiant tube；When the circumferential layer heat accumulation type radiant tube is three layers, then the third layer is justified Perisphere heat accumulation type radiant tube and the interval of second layer circumferential layer heat accumulation type radiant tube are equal to the second layer circumferential layer heat accumulating type spoke The interval for penetrating pipe and first layer circumferential layer heat accumulation type radiant tube is equal to the first layer circumferential layer heat accumulation type radiant tube and center storage The interval of hot type radiant tube；When there is more numbers of plies, and so on.

Some embodiments according to the present utility model, heat accumulation type radiant tube described in the utility model radiate for straight type heat accumulating type Pipe, every heat accumulation type radiant tube can pass through the independent temperature control of gas control valve.

The outer diameter of some embodiments according to the present utility model, center heat accumulation type radiant tube described in the utility model is 10- The outer diameter of 40cm, preferably 15-30cm, the circumferential layer heat accumulation type radiant tube are 10-60cm, and preferably 15-45cm is choosing In use, the circumferential layer heat accumulation type radiant tube takes the larger outer diameter, the outer diameter of the circumferential layer heat accumulation type radiant tube to be as possible 1-1.5 times of the outer diameter of the center heat accumulation type radiant tube so that the temperature field around the circumferential layer heat accumulation type radiant tube is more Close to the temperature on circumferential layer heat accumulation type radiant tube surface, temperature gradient circumferentially can be made to reduce, be conducive to temperature field It is uniform and stable.

Some embodiments according to the present utility model, the utility model are conducive to by rational angle and state modulator Ensure the uniform heat distribution that heat accumulation type radiant tube provides, and the quantity of heat accumulation type radiant tube can be reduced, increases treating capacity, parameter It is excessive to be overheated with the too small regional area that all make heat accumulation type radiant tube, cause heat to be unevenly distributed；It is understood that described Parameter is the size of the pyrolysis oven and heat accumulation type radiant tube.

Embodiment according to the present utility model, with reference to shown in Fig. 2, pyrolysis oil gas processing system packet described in the utility model It includes：Oil and gas separating system, pyrolysis gas purification system and tar well, wherein the pyrolysis oil gas of the oil and gas separating system into Mouth is connected with the pyrolysis oil gas vent of the pyrolysis oven, and the pyrolysis gas outlet is set to the middle part of sliding channel of the pyrolysis furnace body On, the pyrolysis oil gas generated to pyrolysis detaches, and obtains pyrolysis gas and tar；The pyrolysis gas purification system and the oil gas The pyrolysis gas outlet of piece-rate system is connected, and purified treatment, the tar well and the oil gas are carried out to the pyrolysis gas of generation The tar outlet of piece-rate system is connected.

Embodiment according to the present utility model, with reference to shown in Fig. 2, semicoke processing system described in the utility model includes：It is remaining Heat boiler and heat exchange of heat pipe, wherein the semicoke lock hopper of the semicoke entrance of the waste heat boiler and the pyrolysis furnace bottom setting It is connected, primary cooling is carried out to the high-temperature semi-coke that pyrolysis generates, the of the steam (vapor) outlet of the waste heat boiler and the drier Two imports are connected, and the steam generated when using primary cooling high-temperature semi-coke is sent into as heat source in the drier；The heat pipe changes Hot device is connected with the outlet of the waste heat boiler, and depth cooling, the utility model are carried out to the high-temperature semi-coke after primary cooling The steam generated when by primary cooling is used as the heat source of drier, makes full use of semicoke sensible heat, energy utilization rate high.

Some embodiments according to the present utility model are more than ambient pressure, at this point, easily due to having pressure in pyrolysis oven The pyrolysis gas in stove is caused to scurry out, the utility model realizes discharging using semicoke lock hopper, balances the pressure in stove well, Realize the effect of continuous discharge.

In the another aspect of the utility model, it is proposed that a kind of to utilize foregoing superfine powder fast pyrogenation reaction system Method for pyrolysis, specifically include following steps.

（1）Charging is handled：To raw coal after being tentatively crushed and removing iron, handled except removal of impurities such as sawdusts, it is sent to run coal bin In, it after raw coal is sent into drier drying, is sent into the coal pulverizer through feeder and is milled into qualified fines, using external Fines is sprayed into and carries out pyrolytic reaction in the pyrolysis oven by nitrogen or other inert gases, the row powder fan.

（2）Pyrolysis processing：Straight type heat accumulation type radiant tube, the heat accumulation type radiant tube have been evenly arranged in the pyrolysis oven Tube wall temperature using gas control valve control be 600-1200 DEG C, fines stops 2-10s, quilt from top to bottom in pyrolysis oven It is heated to 550-1100 DEG C, completes pyrolytic process, obtains pyrolysis oil gas and temperature as 550 DEG C of high-temperature semi-coke.

Some embodiments according to the present utility model, the temperature in temperature field can be adjusted in several ways in pyrolytic process Section, for example, the radical of adjustment heat accumulation type radiant tube；The number of plies of heat accumulation type radiant tube；Spacing between heat accumulation type radiant tube； The temperature of each heat accumulation type radiant tube itself.

Some embodiments according to the present utility model, the utility model can efficient process fine powder coal, widened coal Adaptability, the pyrolysis being specially adapted under hot conditions, such as when heat accumulation type radiant tube temperature is heated to 1200 DEG C or more, In-furnace temperature can reach 1100 DEG C or so, and the producing cause of coking phenomenon is ash deposition under molten state on heating surface, excellent The ash fusion point of matter feed coal is generally at 1250-1500 DEG C, and the ash fusion point of coal inferior is then less than 1100 DEG C, this poor quality coal Coking is just very easy in pyrolytic process；And coking is easily at lime-ash bulk, if coking fuses into bulk, because gravity is from top It falls, can fall and pound the heat accumulation type radiant tube of arranged beneath, not only influence whether existing Uniformity of Temperature Field, can also cause Aggravate the impact wear of heat accumulation type radiant tube, long-play is easy to make radiant tube gas leakage, brings security risk.And the present apparatus Using vertical arrangement radiant tube mode, heat accumulation type radiant tube road will not be impacted normal coking, when can guarantee long Between safe operation.

More specifically, during long-play, material is from the top to the bottom during downlink, and speed is increasingly Greatly, very big to the impact wear of heat accumulation type radiant tube when heat accumulation type radiant tube lateral arrangement, experiment shows in material medium For under Cr28Ni48w5 steel, the particle of 3-5mm will reach the wear extent of steel at 900 DEG C or more, long-time continuous operation It is annual to 1-2.3mm, huge economic losses are caused, the utility model is arranged using vertical tube, has been well solved the technology and has been asked Topic, it is almost nil by being reduced to the wear extent of lower end radiant tube, reduce cost of equipment maintenance.

（3）Oil vapor treatment：The pyrolysis oil gas of generation is discharged by the pyrolysis oil gas vent of pyrolysis oven, enters subsequent oil gas Piece-rate system carries out Oil-gas Separation to pyrolysis oil gas, obtains pyrolysis gas and tar, the tar is sent into tar well, described Pyrolysis gas is sent into pyrolysis gas purification system and is purified, and can be sold or do outside directly as combustion value fuel by purified pyrolysis gas Downstream product.

（4）Semicoke processing：High-temperature semi-coke, from pyrolysis furnace bottom discharge, enters cooling workshop section, semicoke is cold through semicoke lock hopper But workshop section is divided into two-stage：Previous stage be waste heat boiler section, using high-temperature semi-coke by 550 DEG C be cooled to 200 DEG C and generate steam as The heat source of the drier；Rear stage is depth cooling section, and the high-temperature semi-coke after primary cooling is re-fed into heat exchange of heat pipe depth It is cooling, semicoke is cooled to by 50 DEG C of discharge systems using recirculated cooling water, obtains semicoke product.

Some embodiments according to the present utility model, in waste heat boiler section, high-temperature semi-coke is added waste heat boiler by top and changes Hot cavity inner cylinder absorbs heat after pipe indirect heat exchange with the heat exchange of heat pipe for being arranged in cavity inner cylinder, gradually cools down and by bottom blowing Valve is discharged through outlet, and heat is conducted to high-temperature-hot-water and most by the heat outting pipe of the heat exchange of heat pipe in the outer barrel of waste heat boiler Low-pressure saturated steam is generated eventually, and is collected to drum extraction, is sent to raw coal drying section, i.e., drier is as heat source.

Some embodiments according to the present utility model cool down workshop section in depth, indirect heat exchange are carried out using heat exchange of heat pipe, Using circulating cooling water cooling semicoke to 50 DEG C of discharges, cooling semicoke product is formed.

Some embodiments according to the present utility model, the coal that Tthe utility model system uses have between -200 mesh of 100 mesh Duff kind, for the coal in such particle size range using also very universal on boiler of power plant, coal derives from a wealth of sources, fine breeze Residence time in the stove of place at high temperature is very short, and pyrolytic reaction is just quickly completed in very short height, reduces furnace body height.

Embodiment 1：For this system using the coal of Yulin coal mine plant area as raw material, grain size is -200 mesh of 100 mesh, utilizes pyrolysis Stove carries out fast pyrogenation process to it, and processing is dried in fine coal in advance, the Yulin coal basic data of fine coal after drying As shown in table 1.

Table 1：Yulin coal basic data

After raw coal enters drying process, raw coal moisture drops to 15% from 30%, and pyrolysis oven height is 2 meters, and treating capacity is 20kg/h is run 100 hours, furnace pressure 0.6MPa；The temperature setting of heat accumulation type radiant tube is at 1200 DEG C, and finally obtained half Burnt 1100kg, pyrolysis gas 740kg, the total 160kg of pyrolysis grease；It is compared compared with same operation condition under normal pressure, semicoke is total with pyrolysis gas Yield improves 17%.Experiment is smoothed out to end, does not cohere the problems such as putty builds the pressure.

Inventor has found that, according to superfine powder fast pyrogenation reaction system described in the utility model, pyrolysis oven is using reasonable Vertical tube arrangement, reduce coal dust to the wear extent of heat accumulation type radiant tube, reduce cost of equipment maintenance, increase equipment and use the longevity Life；And the utility model pyrolysis oven is designed to that pressure resistant vessel, gas pressure increase, and volume is reduced so that device minimizes, pole The earth reduces the flow of subsequent tail gas clean-up technique, reduces equipment and technique cost；The coal that the utility model is taken simultaneously Kind is the fine breeze of 100-200 mesh, and the residence time in stove at high temperature is very short, quickly completes pyrolytic reaction, reduces stove Body height；Multiple coal dust jet pipes of the utility model have angle with the horizontally or vertically center line of the pyrolysis oven, form spiral shell Rotation type cutting mode increases residence time of the material in pyrolysis oven, keeps pyrolytic reaction abundant；In addition, the utility model half Burnt processing procedure includes：Primary cooling and depth cooling, and the steam that generates of by primary cooling when is used as the heat source of drier, fills Divide and utilize semicoke sensible heat, energy utilization rate is high.

In the description of the present invention, it should be understood that the orientation or positional relationship of the instructions such as term "upper", "lower" To be based on the orientation or positional relationship shown in the drawings, it is merely for convenience of describing the present invention and simplifying the description, without referring to Show or imply that signified device or element must have a particular orientation, with specific azimuth configuration and operation, therefore cannot manage Solution is limitations of the present invention.

In the description of this specification, reference term " one embodiment ", " some embodiments ", " example ", " specifically show The description of example " or " some examples " etc. means specific features, structure, material or spy described in conjunction with this embodiment or example Point is contained at least one embodiment or example of the utility model.In the present specification, to the schematic table of above-mentioned term Identical embodiment or example need not be directed to by stating.Moreover, particular features, structures, materials, or characteristics described can be It can be combined in any suitable manner in any one or more embodiments or example.In addition, without conflicting with each other, this field Technical staff can carry out the feature of different embodiments or examples described in this specification and different embodiments or examples In conjunction with and combination.

Although the embodiments of the present invention have been shown and described above, it is to be understood that above-described embodiment is Illustratively, it should not be understood as limiting the present invention, those skilled in the art are in the scope of the utility model Inside it can make changes, modifications, alterations, and variations to the above described embodiments, meanwhile, for those of ordinary skill in the art, foundation The thought of the application, there will be changes in the specific implementation manner and application range.

Claims (8)

1. a kind of superfine powder fast pyrogenation reaction system, including：Feed system, pyrolysis oven and semicoke processing system, feature exist In, wherein

The feed system includes：The coal pulverizer and row powder fan of interconnection, the fines that the coal pulverizer is ground It is sprayed into the pyrolysis oven through the row powder fan；

The coal dust spout of the pyrolysis oven is connected with the row powder fan, and the inner cavity of the pyrolysis oven is equipped with heat accumulating type and radiates vertically Pipe, the fines sprayed into the row powder fan are pyrolyzed；

The semicoke processing system includes：Waste heat boiler and heat exchange of heat pipe, wherein the waste heat boiler and the pyrolysis oven bottom The semicoke lock hopper of portion's setting is connected, and primary cooling is carried out to the high-temperature semi-coke that pyrolysis generates；The heat exchange of heat pipe with it is described remaining Heat boiler is connected, and depth cooling is carried out to the high-temperature semi-coke after primary cooling.

2. superfine powder fast pyrogenation reaction system according to claim 1, which is characterized in that the heat accumulation type radiant tube packet It includes：Center heat accumulation type radiant tube and circumferential layer heat accumulation type radiant tube, wherein the center heat accumulation type radiant tube is set in described The middle part of chamber, the circumferential layer heat accumulation type radiant tube is arranged circumferentially about around the center heat accumulation type radiant tube, and the circumference Layer heat accumulation type radiant tube include：More heat accumulation type radiant tubes, adjacent two heat accumulation type radiant tubes are pressed from both sides with 15 ° -60 ° of the center of circle Angle.

3. superfine powder fast pyrogenation reaction system according to claim 2, which is characterized in that the circumferential layer heat accumulating type spoke The number of plies for penetrating pipe is 1-10 layers, and the spacing distance between every layer is equal.

4. superfine powder fast pyrogenation reaction system according to claim 1, which is characterized in that the number of the coal dust spout It is multiple, may be contained within the top of the pyrolysis oven, and in the same level at 0.1-0.5m at the top of the pyrolysis oven.

5. superfine powder fast pyrogenation reaction system according to claim 4, which is characterized in that set in the coal dust nozzle There is the coal dust jet pipe being connected with the row powder fan, and the center line of the coal dust jet pipe and the pyrolysis oven has 20-40 ° Angle.

6. superfine powder fast pyrogenation reaction system according to claim 1, which is characterized in that further include：It is pyrolyzed at oil gas Reason system comprising：Oil and gas separating system, pyrolysis gas purification system and tar well, wherein the oil and gas separating system with The pyrolysis oil gas vent of the pyrolysis oven is connected, the pyrolysis gas outlet of the pyrolysis gas purification system and the oil and gas separating system It is connected, the tar well is connected with the tar outlet of the oil and gas separating system.

7. superfine powder fast pyrogenation reaction system according to claim 1, which is characterized in that the feed system also wraps It includes：Run coal bin, drier and the feeder being sequentially connected, wherein the feeder is connected with the coal pulverizer.

8. superfine powder fast pyrogenation reaction system according to claim 7, which is characterized in that the steam of the waste heat boiler Outlet is connected with the drier, and the steam generated when using primary cooling high-temperature semi-coke is sent into as heat source in the drier.