CN108865197A - A kind of fine coal microwave-heating system and product separation method - Google Patents

Abstract

The present invention discloses a kind of fine coal microwave-heating system and product separation method, the system includes feed, microwave-heating stove, primary cyclone, secondary cyclone and thermal decomposition product separation system, microwave-heating stove has feed(raw material)inlet, pyrolysis gas outlet and semi-coke outlet, feed is connected to the feed(raw material)inlet of microwave-heating stove, pyrolysis gas outlet is connected to the entrance of primary cyclone, and the gas outlet of primary cyclone and the gas outlet of secondary cyclone are connect with thermal decomposition product separation system；Thermal decomposition product separation system includes the separator that condenser and two are used to carry out pyrolysis gas Oil-gas Separation, two separators are connected by pipe network, pipe network can make pyrolysis gas realize that forward and reverse flows in each separator, and condenser, primary cyclone and secondary cyclone are connect with the pipe network.The present invention is suitable for carrying out microwave-heating to solid materials such as low-disintegration coal, biomass, oil shales and separate to pyrolysis gas.

Description

A kind of fine coal microwave-heating system and product separation method

Technical field

The invention belongs to pyrolysis of coal fields, and in particular to a kind of fine coal microwave-heating system and product separation method.

Background technique

The advantages such as microwave-heating has unique thermal conductivity law, homogeneous heating inside and outside entirety, and heating rate is fast, with routine Pyrolysis is compared, microwave-heating can have the characteristics that using microwave quickly, uniform selection heating, to biomass, sludge, coal, The materials such as greasy filth and oil shale are pyrolyzed, and are improved pyrolysis efficiency, are increased thermal decomposition product yield and Improving The Quality of Products.It is micro- at present Wave industrial applications are mostly dry and removal of impurities, and using the horizontal chamber furnace (oven) of Belt Conveying raw material, processing capacity is limited, and to ingredient requirement It is higher, also there is the application of a small number of microwave-heating oily sludges, is equally the horizontal chamber furnace (oven) using ribbon feeding.Horizontal chamber furnace (oven) land occupation is big, It is not able to satisfy large-scale production and different raw materials, therefore, it is necessary to research and develop novel microwave pyrolysis oven, to meet pyrolytic process demand.

There are the separation of thermal decomposition product solid, liquid, gas for existing conventional pyrolysis and microwave-heating system not exclusively, especially solid, Liquid separation, serious influence thermal decomposition product quality, the separation of thermal decomposition product solid, liquid, gas are to restrict the problem of pyrolytic technique development.

Summary of the invention

To solve problems of the prior art, the object of the present invention is to provide a kind of fine coal microwave-heating system and productions Object separation method, system of the invention are a kind of microwave-heating systems suitable for low-disintegration coal, biomass, oil shale and sludge System, in this system-based, the gentle separation of solid, liquid that thermal decomposition product separation method of the invention is able to solve thermal decomposition product is endless Full problem.

The technical solution adopted by the present invention is as follows：

A kind of fine coal microwave-heating system, including feed, microwave-heating stove, primary cyclone, second level whirlwind point From device and thermal decomposition product separation system, feed(raw material)inlet, pyrolysis gas outlet and semi-coke outlet, feed are offered in microwave-heating stove It is connected to the feed(raw material)inlet of microwave-heating stove, pyrolysis gas outlet is connected to the entrance of primary cyclone, one cyclonic separation The gas outlet of device and the gas outlet of secondary cyclone are connect with thermal decomposition product separation system；

Thermal decomposition product separation system includes condenser and two for carrying out the separators of Oil-gas Separation to pyrolysis gas, and two A separator is connected by pipe network, pyrolysis gas can be made to realize forward and reverse in each separator by the pipe network Flowing, condenser, primary cyclone and secondary cyclone are connect with the pipe network.

Microwave-heating stove includes furnace body and stirrer drive, and feed(raw material)inlet and pyrolysis gas outlet are opened in the upper of furnace body End, the lower end that semi-coke outlet is opened in furnace body are set；Microwave generator and blender, blender and stirrer-driven are equipped in furnace body The output axis connection of device, microwave generator are arranged on the furnace wall of furnace body, and the middle part of furnace body is arranged in blender, and is located at original Expect the underface of entrance.

Blender includes support rod and drapery panel, and the output shaft of support rod and stirrer drive is coaxially connected, cloth Plate is helical form, and the inside edge of drapery panel is fixedly connected with support rod, and drapery panel is in up-small and down-big taper knot from top to bottom Structure.

Furnace body inside is equipped with pumping impeller and wire mesh at pyrolysis gas outlet, wire mesh be located at pumping impeller and The lower part of pyrolysis gas outlet, for being filtered to the pyrolysis gas generated in furnace body.

Separator includes the first air flue, the second air flue, two side plates and several metal sandwich corrugated platings；

Face setting before and after two side plates, from the left side of two side plates to the right, several metal sandwich corrugated platings are mutual It in parallel and is arranged at intervals between two side plates, the front-rear side walls of all metal sandwich corrugated platings are fixed with two side plates respectively to be connected It connects, from the lower part of two side plates to top, forms waveform channel between two adjacent metal sandwich corrugated platings；

The first metallic sieve is provided between two adjacent metal sandwich corrugated platings；The folder of each metal sandwich corrugated plating Metal coil pipe for heating is provided in layer；

First air flue and the second air flue are connect with the upper and lower part of two side plates respectively, the first air flue and metal sandwich wave The upper end in the waveform channel formed between card is connected to, and the waveform formed between the second air flue and metal sandwich corrugated plating is logical The lower end in road is connected to.

First metallic sieve includes the metallic sieve of several segments single layer, and the first metallic sieve entirety fold-line-shaped is arranged adjacent Two metal sandwich corrugated platings between, welded between the both ends that each section of the first metallic sieve and metal sandwich corrugated plating.

Top to the lower part in the waveform channel formed between two neighboring metal sandwich corrugated plating, the first metallic sieve Height be waveform channel height 1/3.

The distance between two neighboring metal sandwich corrugated plating is not more than 3mm, and the first metallic sieve is 200 meshes.

The entrance of metal coil pipe is separately positioned on the upper and lower part of metal sandwich corrugated plating.

Separator include the first air flue, the second air flue and several Combined sieve boards, each Combined sieve board have entrance and Outlet；

Combined sieve board includes metal sheet frame, metal coil pipe and the second metallic sieve, metal sheet frame be with entrance, outlet and The entrance of the frame structure of side wall, all metal sheet frames is connected to the first air flue, the outlet of all metal sheet frames 4 and the second air flue Connection, the setting of the second metallic sieve is multiple and is arranged in metal sheet frame；Entrance along metal sheet frame is to export direction, the second gold medal The mesh number for belonging to sieve is incremented by；Metal coil pipe is arranged on the side wall of metal sheet frame.

The second all metallic sieves is divided into several metallic sieve groups, in each metallic sieve group, the mesh of metallic sieve Number is identical；Each metallic sieve group includes the metallic sieve of three pieces single layer, the Z-shape structure setting of the metallic sieve of three pieces single layer； It is non-90 degree angle that the metallic sieve and metal plate of each single layer, which outline the axis of Way in,.

Along one end of metal sheet frame to the other end, the mesh number of metallic sieve group is followed successively by 120 mesh, 140 mesh, 170 mesh and 200 Mesh is incremented by setting.

It is welded between second metallic sieve and metal sheet frame.

Along one end of metal sheet frame to the other end, disk is set to the side wall of metal sheet frame to metal coil pipe in the shape of a spiral.

When the cross section of metal sheet frame is rectangle, on each side wall of metal sheet frame, metal coil pipe is continuous S-shaped Or fold-line-shaped detour setting.

The entrance of metal coil pipe is separately positioned on the both ends of metal sheet frame.

The side wall of metal sheet frame has sandwich, and metal coil pipe is arranged in interlayer.

The pipe network includes several Self controlling valves, several pressure transmitters and pipeline, and two separators are remembered respectively For separator A and separator B；

The outlet of primary cyclone is all connected with the second air flue of separator A and the second air flue of separator B；

The outlet of secondary cyclone is all connected with the second air flue of separator A and the second air flue of separator B；

The second air flue of separator A and the second air flue of separator B are connect with the entrance of secondary cyclone；

The first air flue of separator A and the first air flue of separator B are connect with the entrance of condenser；

First air flue of the outlet of condenser and the first air flue of separator and separator B is separately connected；

The second air flue of separator A and the second air flue of separator B are respectively arranged with first pressure transmitter and Two pressure transmitters；

On pipeline between the outlet of the first air flue and condenser of separator A and the pipe between the entrance of condenser The first Self controlling valve and the second Self controlling valve are respectively set on road；

The second air flue of separator A is provided with third Self controlling valve and the 4th Self controlling valve parallel with one another, and third is certainly Control valve is arranged on the pipeline between the second air flue of separator A and secondary cyclone entrance；4th Self controlling valve is logical The outlet of piping and secondary cyclone and the outlet of primary cyclone are separately connected；

On pipeline between the first air flue and condenser inlet of separator B and on the pipeline between condensator outlet The 5th Self controlling valve and the 6th Self controlling valve is respectively set；

The second air flue of separator B is provided with the 7th Self controlling valve and the 8th Self controlling valve parallel with one another, and the 7th certainly Control valve is arranged on the pipeline between the second air flue of separator B and secondary cyclone entrance；8th Self controlling valve It is separately connected by the outlet of pipeline and secondary cyclone and the outlet of primary cyclone；

First Self controlling valve, third Self controlling valve, the 5th Self controlling valve and the 8th Self controlling valve with first pressure pick-up Device connection；

Second Self controlling valve, the 4th Self controlling valve, the 6th Self controlling valve and the 7th Self controlling valve with second pressure pick-up Device connection.

Feed includes raw material cabin, sifter, grinder and dryness storehouse, the feed inlet company of raw material bin discharge port external and sifter It connects, the discharge port of sifter and the feed inlet of dryness storehouse connect, and the discharge port of dryness storehouse and the feed(raw material)inlet of microwave-heating stove connect Logical, the feed inlet of grinder and the discharge port of sifter connect, and the discharge port of grinder and the feed inlet of sifter connect；

It further include destilling tower, the feed(raw material)inlet of destilling tower and the condensed fluid of condenser are exported and connected；

Further include cooling chamber, cooler and heat exchange station, the semi-coke outlet of microwave-heating stove, primary cyclone solid The feed(raw material)inlet of the solid outlet and cooling chamber of outlet and secondary cyclone connects；Cooling chamber is equipped with nitrogen inlet and nitrogen Gas outlet, dryness storehouse are equipped with nitrogen inlet and nitrogen outlet, and the nitrogen outlet of dryness storehouse and the nitrogen inlet of cooling chamber connect, The nitrogen outlet of cooling chamber and the entrance, destilling tower and heat exchange station of metal coil pipe are separately connected, be respectively used to metal coil pipe and Destilling tower is heated, and heat exchange occurs in heat exchange station and cools down；The cooling entrance of cooler and the first gas of separator Road connection, the cold air outlet of heat exchange station and the medium inlet of cooler connect, the media outlet of cooler and going out for metal coil pipe Mouth is connect with the nitrogen inlet of dryness storehouse again after being combined into all the way.

A kind of fine coal microwave-heating product separation method, includes the following steps：

Step 1, fine coal raw material is added in microwave-heating stove feed, and fine coal carries out microwave-heating in microwave-heating stove, The heat of mixing for obtaining thermal decomposition product semi-coke, coal tar oil vapour and coal gas is vented one's spleen；

Step 2, the heat of mixing is vented one's spleen and is sent into primary cyclone from pyrolysis gas outlet, primary cyclone is to mixing Pyrolysis gas carry out one cyclonic separation, make the heat of mixing vent one's spleen in be mingled with semi-coke end separation；

Step 3, the heat of mixing then by step 2 handled is vented one's spleen a separator being passed through in thermal decomposition product separation system Be dusted separation, be further separated out the heat of mixing vent one's spleen in the semi-coke end that is mingled with, and the coal tar oil gasification that dust will be wrapped up, Separate dust with coal tar, dust is stopped to be detained by separator, and coal tar oil vapour and coal gas are after separator discharge Into condenser, condenser makes coal tar steam liquefied, while clean gas is discharged；When the separation for being dusted separation fills When setting stopped dust and reaching set amount, pipe network is switched over, and carries out step 4；

Step 4, the heat of mixing for having handled step 2, which is vented one's spleen, to be passed through in another separator, the separator carry out with The same separation process of step 3, meanwhile, a part of clean gas being discharged in condenser introducing has been subjected to dedusting separation Separator, the separator for having carried out dedusting separation carry out blowback purification, make the separator for having carried out dedusting separation Middle that the dust being detained is stopped reversely to be blown out by clean gas and enter secondary cyclone, secondary cyclone goes out blowback Coal gas and dust carry out cyclonic separation, then the gas after separation is passed through in the separator for being dusted separation at this time and is carried out Dedusting separation；When the dust that the separator for being dusted separation at this time is stopped reaches set amount, then carry out step 5；

Step 5, pipe network switches over again, then carries out step 4, with realize to the heat of mixing that step 2 has been handled vent one's spleen into The lasting separation of row.

It is logical that the solid product being discharged from microwave-heating stove, primary cyclone and secondary cyclone is sent into cooling chamber It crosses nitrogen to be cooled down, wherein the temperature for the solid product being discharged from microwave-heating stove is 600-700 DEG C, what cooling chamber came out Nitrogen temperature is 300-350 DEG C；

The nitrogen that cooling chamber comes out is divided into two-way again, is sent into the product liquid that destilling tower condenses condenser all the way It is distilled, the nitrogen temperature come out from destilling tower is 200-250 DEG C；The nitrogen that destilling tower comes out heat exchange station is passed through again to carry out Pre- recuperation of heat makes the temperature of nitrogen be down to 25-40 DEG C；The nitrogen after cooling is passed through cooler again, clean gas is dropped Temperature, meanwhile, nitrogen is heated up, and the temperature of the nitrogen flowed out from cooler media outlet is 50-60 DEG C；

The another way nitrogen that cooling chamber comes out, which is passed through in the metal coil pipe of separator, heats entire separator, The temperature of the nitrogen come out from metal coil outlets is 250-300 DEG C；

Lead to together after being mixed again from the nitrogen that cooler media outlet flows out and from the nitrogen that metal coil outlets come out The nitrogen inlet for entering dryness storehouse, is dried raw material, and the nitrogen come out from the nitrogen outlet of dryness storehouse is passed through cooling chamber, to solid Body product is cooled down.

Compared with prior art, the present invention has the advantages that：

The feed of fine coal microwave-heating system of the present invention provides fine coal raw material to microwave-heating stove, and microwave-heating stove is to powder Coal raw material is pyrolyzed, and the semi-coke for being pyrolyzed generation is exported through semi-coke to be discharged, the coal tar oil vapour of generation and the mixed pyrolysis of coal gas Gas enters primary cyclone and carries out one cyclonic separation, and the heat of mixing separated through primary cyclone dedusting is vented one's spleen entrance Thermal decomposition product separation system, which vents one's spleen to the heat of mixing of coal tar oil vapour and coal gas, carries out further dedusting separation；Thermal decomposition product point It include the separator that condenser and two are used to carry out pyrolysis gas Oil-gas Separation from system, two separators pass through pipe network Connection can make pyrolysis gas realize that forward and reverse flows in each separator by the pipe network, condenser, level-one rotation Wind separator and secondary cyclone are connect with the pipe network；It can be vented one's spleen the heat of mixing middle packet by two separators The fine coal wrapped up in is dusted separation, obtains the gaseous mixture of coal tar oil vapour and coal gas, the gaseous mixture of coal tar oil vapour and coal gas from Separator, which enters condenser after coming out, makes coal tar oil vapour condense to form coal tar liquid, to realize coal tar oil vapour and coal The separation of gas obtains clean coal gas；

The present invention passes through the pipe network that pyrolysis gas can be made to realize forward and reverse flowing in each separator, so that two A separator can rotation separation is dusted to the vent one's spleen fine coal of middle package of the heat of mixing, and being capable of rotation pair using pipe network Separator carries out blowback by the clean gas that condenser is isolated, and is cleaned, the coal gas after blowback and dedusting particle Mixture enters secondary cyclone and is dusted separation again, obtains the less coal gas of dustiness, then the coal gas is passed through just It vents one's spleen to be dusted together with the heat of mixing in the separator for being dusted separation and separate, therefore the present invention can be mixed to pyrolysis The fine coal closed in gas carries out on-line continuous dedusting；Substantially increase efficiency of dust collection.To sum up, fine coal microwave-heating through the invention System is able to solve the gentle incomplete problem of separation of solid, liquid of pulverized coal pyrolysis product.

Further, the first separator of the invention passes through the metal being arranged in the interlayer of metal sandwich corrugated plating Coil pipe can heat whole device, and waveform channel is formed between two adjacent metal sandwich corrugated platings, adjacent The first metallic sieve is provided between two metal sandwich corrugated platings, wherein waveform channel can increase the stream of coal pyrolysis gas Journey is heated coal pyrolysis gas sufficiently, and the coal tar of package dust gasifies after being heated in coal pyrolysis gas, and then makes dust and coal Tar separation, the dust isolated can be stopped to filter down by the first metallic sieve, in coal tar oil vapour and coal pyrolysis gas Whole device is discharged after passing through waveform channel in coal gas, and enters next procedure, and separator of the invention is able to solve existing Dust and coal tar are difficult to the problem being kept completely separate in technology, and have separating effect outstanding feature.

Further, second of separator of the invention be by being passed through high-temperature medium into metal coil pipe, can will be golden Belong to inner cavity and the heating of the second metallic sieve of sheet frame；Gaseous mixture after pulverized coal pyrolysis is passed through the inner cavity of metal sheet frame from entrance Afterwards, gaseous mixture is heated in the inner cavity of metal sheet frame, and what is be heated closes the coal tar oil gasification in gas, and gaseous mixture passes through the second metal When sieve, due to the entrance along metal sheet frame to export direction, the mesh number of the second metallic sieve is incremented by, the second metallic sieve this Kind of row sets form the solid particle in gaseous mixture can be made to be filtered out step by step by the second metallic sieve, and this filtering step by step is so that the Two metallic sieves are not easy to plug, and are able to extend the disengaging time of separator, the coal tar oil and gas and coal gas that coal tar oil gasification generates It is flowed out by the second metallic sieve degassing, and from outlet, to realize to the mixed gas separation purification after pulverized coal pyrolysis；

During isolation of purified, when separator is increased from the first air flue to the pressure drop of the second air flue, stop from entrance Gaseous mixture after being passed through pulverized coal pyrolysis；It is passed through purification gas from outlet to the inner cavity of metal sheet frame again, is made on the second metallic sieve Solid particle separated with the second metallic sieve, the solid particle isolated from entrance be discharged, due to along the second metal sheet frame It is exported to Way in, the mesh number of the second metallic sieve is successively decreased, therefore when separating solid particle with metallic sieve, Bu Huizao At the clogging of metallic sieve, it can guarantee for solid particle to be completely exhausted out metal sheet frame, realize to the anti-of separator Blowing off, the process do not need to carry out dismounting and more changing jobs to metallic sieve, can carry out online, substantially increase separation dress The service life and cost set, save nonproductive time, improve production efficiency and production capacity.

Further, it is non-90 degree angle that the metallic sieve of each single layer and metal plate, which outline the axis of Way in, i.e., The metallic sieve of each single layer can prevent the solid particle of sub-department in metallic sieve in this way in the tilted setting of metal sheet frame Upper deposition.

Further, pipe network of the invention is by the opening and closing of Self controlling valve, can be dusted point in the first separator From when, to the second separator carry out blowback purification；When the second separator is dusted separation, to the first separator into Row blowback purification；The fully automated control of the process, in production process, it is not necessary to stop production, therefore can be realized the company of pyrolysis of coal product It is continuous to separate, production efficiency is substantially increased, time and economic cost are saved, moreover it is possible to be achieved energy-saving and emission reduction purposes, economy effect Fruit and obvious environment benefit.

Further, the invention also includes cooling chamber, cooler and heat exchange station, the semi-coke outlets of microwave-heating stove, level-one The connection of the feed(raw material)inlet of the solid outlet of cyclone separator and the solid outlet of secondary cyclone and cooling chamber；In cooling chamber Equipped with nitrogen inlet and nitrogen outlet, dryness storehouse is equipped with nitrogen inlet and nitrogen outlet, the nitrogen outlet of dryness storehouse and cooling The nitrogen inlet of room connects, and the nitrogen outlet of cooling chamber is separately connected with the entrance, destilling tower and heat exchange station of metal coil pipe, respectively For being heated to metal coil pipe and destilling tower, heat exchange occurs in heat exchange station and cools down；The cooling entrance of cooler with First air flue of separator is connected to, and the cold air outlet of heat exchange station and the medium inlet of cooler connect, and the medium of cooler goes out Mouth is connect with the nitrogen inlet of dryness storehouse again after being combined into all the way with the outlet of metal coil pipe；Microwave-heating system of the invention uses Nitrogen circulation heat exchange, to solve the problems, such as that pyrolytic process heat utilization is insufficient, reduces environmental pollution and water resource disappears Consumption, meanwhile, solid, liquid phase thermal decomposition product is efficiently separated, pyrolysis efficiency is greatly improved, is beneficial to energy conservation emission reduction, system easy to accomplish System consecutive production and industrialization promotion.

By the beneficial effect of fine coal microwave-heating system of the present invention it is found that fine coal microwave-heating product separation side of the invention Method is able to solve the gentle incomplete problem of separation of solid, liquid of pulverized coal pyrolysis product, and separates venting one's spleen the heat of mixing During, can be realized continuously separating for pyrolysis of coal product, substantially increase production efficiency, save the time and it is economical at This, moreover it is possible to it achieves energy-saving and emission reduction purposes, economic effect and obvious environment benefit.

Detailed description of the invention

Fig. 1 is that the structure of fine coal microwave-heating system of the present invention is intended to；

Fig. 2 is the process flow chart of fine coal microwave-heating product separation method of the present invention；

Fig. 3 is the structural schematic diagram of microwave-heating stove of the present invention；

Fig. 4 is the schematic top plan view of microwave-heating stove of the present invention；

Fig. 5 is the structural schematic diagram of the separate section separated in microwave-heating system of the present invention to pyrolysis of coal product；

Fig. 6 is a kind of pyrolysis of coal product separator schematic diagram of the invention；

Fig. 7 is schematic diagram when pyrolysis of coal product separator of the present invention separates pyrolysis of coal product；

Fig. 8 is that pyrolysis of coal product separator blowback of the present invention purifies schematic diagram；

Fig. 9 is another pyrolysis of coal product separator schematic diagram of the invention；

Figure 10 is the plate frame structure schematic diagram in another pyrolysis of coal product separator of the present invention；

Figure 11 is the metallic sieve group structural schematic diagram in another separator of the present invention；

Figure 12 is the structural schematic diagram after all metallic sieves combination in another separator of the present invention；

Figure 13 is the structural schematic diagram of the Combined sieve board in another separator of the present invention；

Figure 14 is another separator of the present invention as operation schematic diagram when separating dirt pocket；

Figure 15 be another separator of the present invention as blowback clean room when operation schematic diagram.

In figure：1- raw material cabin, 2- sifter, 3- grinder, 4- dryness storehouse, 5- microwave-heating stove, the separation of 6- one cyclonic Device, 7- dirt pocket (separation dirt pocket), 8- condenser, 9- destilling tower, 10- cooler, 11- dirt pocket (blowback clean room), 12- Secondary cyclone, the feed(raw material)inlet 13-, 14- pyrolysis gas outlet, 15- are evacuated impeller, 16- wire mesh, and 17- microwave occurs Device, 18- material mixing device, 18-1- support rod, 18-2- drapery panel, the furnace wall 19-, 20- output shaft, the outlet of 21- semi-coke；

The first air flue of 201-, the second air flue of 201-1-, 202- metal coil pipe import, 203- metal coil outlets, 204- gold Category interlayer corrugated plating, 205- the first metal coil pipe, the first metallic sieve of 206-, 207- side plate, the first Self controlling valve of 2012-1-, The second Self controlling valve of 2012-2-, 2012-3- third Self controlling valve, the 4th Self controlling valve of 2012-4-, the 5th internally piloted valve of 2012-5- Door, the 6th Self controlling valve of 2012-6-, the 7th Self controlling valve of 2012-7-, the 8th Self controlling valve of 2012-8-, 2013-1- first are pressed Power transmitter, 2013-2- second pressure transmitter, the first separator of 2014-, the second separator of 2015-, 2016- are dry Case；

102- high-temperature gas intake header, 103- high-temperature gas outlet header, 104- metal sheet frame, the second metal dish of 105- Pipe, the second metallic sieve of 106-, 107- high-temperature gas inlet pipeline, 108- high-temperature gas outlet conduit, 109- Combined sieve board.

Specific embodiment

Below in conjunction with drawings and examples, a specific embodiment of the invention is described in more details, so as to energy The advantages of enough more fully understanding the solution of the present invention and its various aspects.

As shown in Figure 1, fine coal microwave-heating system of the invention, including feed, microwave-heating stove 5, one cyclonic point From device 6, secondary cyclone 12 and thermal decomposition product separation system, microwave-heating stove 5 has feed(raw material)inlet 13, pyrolysis gas outlet 14 and semi-coke outlet 21, feed is connected to the feed(raw material)inlet 13 of microwave-heating stove 5, and pyrolysis gas outlet 14 is separated with one cyclonic The entrance of device 6 is connected to, and the gas outlet of primary cyclone 6 and the gas outlet of secondary cyclone 12 are divided with thermal decomposition product It is connected from system；

Thermal decomposition product separation system includes that condenser 8, destilling tower 9 and two divide for carrying out Oil-gas Separation to pyrolysis gas From device, two separators are connected by pipe network, pyrolysis gas can be made to realize in each separator by the pipe network Forward and reverse flowing, condenser 8, primary cyclone 6 and secondary cyclone 12 are connect with the pipe network, are distilled The feed(raw material)inlet of tower 9 and the condensed fluid of condenser 8 are exported and are connected.

As shown in Figure 1, referring to Fig. 2, feed of the invention includes raw material cabin 1, sifter 2, grinder 3 and dryness storehouse 4, 1 discharge port of raw material cabin is connect with the feed inlet of sifter 2, and the discharge port of sifter 2 is connect with the feed inlet of dryness storehouse 4, dry The discharge port in storehouse 4 is connected to the feed(raw material)inlet 13 of microwave-heating stove 5, and the feed inlet of grinder 3 and the discharge port of sifter 2 connect It connects, the discharge port of grinder 3 is connect with the feed inlet of sifter 2.

As shown in Figure 3 and Figure 4, microwave-heating stove 5 of the invention includes furnace body and stirrer drive, the upper end of furnace body Equipped with feed(raw material)inlet 13 and pyrolysis gas outlet 14, lower end is equipped with semi-coke outlet 21；Microwave generator 17 and stirring are equipped in furnace body Device 18, the output shaft 20 of blender 18 and stirrer drive, microwave generator 17 are arranged on the furnace wall of furnace body, blender 18 are arranged in the middle part of furnace body, and are located at the underface of feed(raw material)inlet 13；Furnace body inside is equipped with pumping at pyrolysis gas outlet 14 Impeller 5 and wire mesh 16, wire mesh 16 are located at the lower part of pumping impeller 5 and pyrolysis gas outlet 14, for in furnace body The pyrolysis gas of generation is filtered, and the main function for being evacuated impeller 5 and wire mesh 16 is that pyrolysis gas is quickly drawn out reactor, It reduces second level pyrolysis and reduces the solid particle being mingled in gas.

Wherein, the material of blender 18 be stainless steel, including support rod 18-1 and drapery panel 18-2, support rod 18-1 with stir The output shaft 20 for mixing device driving device is coaxially connected, and drapery panel 18-2 is helical form, the inside edge of drapery panel 18-2 and support Bar 18-1 is fixedly connected, and drapery panel 18-2 is in up-small and down-big pyramidal structure from top to bottom；It is close to the furnace inner wall of microwave generator To aoxidize aluminium material, remaining inner wall is that refractory brick is piled up.

As shown in Figure 6 to 8, a kind of separator of the invention includes the first air flue 201, the second air flue 201-1, two Side plate 207 and several metal sandwich corrugated platings 204；

Two 207 front and back face of side plate settings, from the left side of two side plates 207 to the right, several metal sandwich ripples Plate 204 is parallel to each other and is arranged at intervals between two side plates 207, the front-rear side walls difference of all metal sandwich corrugated platings 204 Be fixedly connected with two side plates 207, from the lower part of two side plates 207 to top, two adjacent metal sandwich corrugated platings 204 it Between formed waveform channel；

The first metallic sieve 206 is provided between two adjacent metal sandwich corrugated platings 204；Each metal sandwich ripple The first metal coil pipe 205 for heating is provided in the interlayer of plate 204；

First air flue 201 and the second air flue 201-1 are connect with the upper and lower part of two side plates 207 respectively, the first air flue The upper end in the waveform channel formed between 201 and metal sandwich corrugated plating 204 is connected to, the second air flue 201-1 and metal sandwich The lower end in the waveform channel formed between corrugated plating 204 is connected to.

Wherein, the second metallic sieve 206 includes the metallic sieve of several segments single layer, the whole broken line of the second metallic sieve 206 Shape is arranged between two adjacent metal sandwich corrugated platings 204, the both ends of the second 206 each sections of metallic sieve and metal sandwich It is welded between corrugated plating 204.The top in the waveform channel formed between two neighboring metal sandwich corrugated plating 204 is under Portion, the height of the second metallic sieve 206 are the 1/3 of waveform channel height.Between two neighboring metal sandwich corrugated plating 204 Distance is not more than 3mm, and the second metallic sieve 206 is 200 meshes.The entrance of first metal coil pipe 205 is separately positioned on metal The upper and lower part of interlayer corrugated plating 204.

The separator passes through the first metal coil pipe being arranged in the interlayer of metal sandwich corrugated plating can be to entire dress It sets and is heated, form waveform channel, two adjacent metal sandwich ripples between two adjacent metal sandwich corrugated platings Metallic sieve is provided between plate, wherein waveform channel can increase the process of coal pyrolysis gas, add coal pyrolysis gas sufficiently Heat, wrap up in coal pyrolysis gas dust coal tar be heated after gasify, and then separate dust with coal tar, the dust isolated It can be stopped to filter down by metallic sieve, the coal gas in coal tar oil vapour and coal pyrolysis gas is discharged whole behind waveform channel A device, and enter next procedure, separator of the invention is able to solve dust in the prior art and coal tar is difficult to completely Isolated problem, and there is separating effect outstanding feature.

As shown in Fig. 9~Figure 15, another separator of the invention include the first air flue 201, the second air flue 201-1 and Several Combined sieve boards, each Combined sieve board have entrance and exit；

Combined sieve board includes metal sheet frame 104, the second metal coil pipe 105 and the second metallic sieve 106, metal sheet frame 104 For the frame structure with entrance, outlet and side wall, the entrance of all metal sheet frames 104 is connected to the first air flue 201, Suo Youjin The outlet for belonging to sheet frame 104 is connected to the second air flue 201-1, and the second metallic sieve 106 is arranged multiple and is arranged in metal sheet frame 104 It is interior；To export direction, the mesh number of the second metallic sieve 106 is incremented by entrance along metal sheet frame 104；Second metal coil pipe 105 is set It sets on the side wall of metal sheet frame 104.

The second all metallic sieves 106 divides for several metallic sieve groups, in each metallic sieve group, metallic sieve Mesh number is identical；Each metallic sieve group includes the metallic sieve of three pieces single layer, and the Z-shape structure of the metallic sieve of three pieces single layer is set It sets；The metallic sieve of each single layer and the axis in 104 entrance direction of metal sheet frame are non-90 degree angle.

As shown in figure 12, along one end of metal sheet frame 104 to the other end, the mesh number of metallic sieve group be followed successively by 120 mesh, 140 mesh, 170 mesh and 200 mesh are incremented by setting.As shown in figure 13, it is welded between the second metallic sieve 106 and metal sheet frame 104.

Referring to Fig.1 shown in 0, along one end of metal sheet frame 104 to the other end, disk is set the second metal coil pipe 105 in the shape of a spiral In the side wall of metal sheet frame 104.When the cross section of metal sheet frame 104 is rectangle, on each side wall of metal sheet frame 104, Second metal coil pipe 105 is that continuous S-shaped or fold-line-shaped detour are arranged.Preferably, the side wall tool of metal sheet frame 104 of the invention There is sandwich, the second metal coil pipe 105 is arranged in interlayer.The entrance of second metal coil pipe 105 is separately positioned on metal The both ends of sheet frame 104.Second metal coil pipe 105 is arranged in interlayer, and the second metal coil pipe 105 is close to interlayer wall, interlayer wall For the metal material that readily conducts heat, with a thickness of 2mm；Second metal coil pipe 105 is that the bending of refractory metal pipe is made, and pipeline specifications are

The separator, can be by the inner cavity of metal sheet frame and gold by being passed through high-temperature medium into the second metal coil pipe Belong to sieve heating；Gaseous mixture after pulverized coal pyrolysis is behind the inner cavity that entrance is passed through metal sheet frame, and gaseous mixture is in metal sheet frame Inner cavity is heated, and what is be heated closes the coal tar oil gasification in gas, when gaseous mixture passes through metallic sieve, due to entering along metal sheet frame Mouthful to export direction, the mesh number of metallic sieve is incremented by, and this row of metallic sieve, which sets form, can make solid in gaseous mixture Grain is filtered out step by step by metallic sieve, and this filtering step by step is able to extend point of separator so that metallic sieve is not easy to plug The coal tar oil and gas and coal gas generated from time, coal tar oil gasification is flowed out by metallic sieve degassing, and from outlet, to realize To the mixed gas separation purification after pulverized coal pyrolysis；During isolation of purified, when separator is from the first air flue to the second air flue When pressure drop increases, stop the gaseous mixture after being passed through pulverized coal pyrolysis from entrance；Purification is passed through from outlet to the inner cavity of metal sheet frame again Gas separates the solid particle on metallic sieve with metallic sieve, and the solid particle isolated is discharged from entrance, due to along gold Belong to sheet frame is exported to Way in, and the mesh number of metallic sieve is successively decreased, therefore when separating solid particle with metallic sieve, no It will cause the clogging of metallic sieve, can guarantee for solid particle to be completely exhausted out metal sheet frame, realize to separator Blowback purification, which does not need to carry out metallic sieve to dismount and more change jobs, can carry out online, substantially increases point Service life and cost from device, save nonproductive time, improve production efficiency and production capacity.The metallic screen of each single layer It is non-90 degree angle that net and metal plate, which outline the axis of Way in, i.e., the metallic sieve of each single layer is in metal sheet frame introversion Tiltedly setting, can prevent the solid particle of sub-department in metallic screen deposited thereon in this way.

It is the structure after two separators of the invention are connected with each other, two separator difference referring to Fig. 6 and Fig. 9 For separator A and separator B, separator A is identical with separator B structure and is symmetrical set, and is being dusted When, the heat of mixing for being mingled with a small amount of dust from one cyclonic separation is vented one's spleen to be dusted by separator A, and separating device A makees To separate dirt pocket, gasifies after wrapping up the coal tar contact high-temperature metal sieve of dust, separate dust with coal tar, coal tar Steam and coal gas pass through separation dirt pocket, go to condensation workshop section.When the pressure of 201 to the second air flue 201-1 of the first air flue of separator A When falling-rising is high, the heat of mixing for being mingled with a small amount of dust of switching one cyclonic separation is vented one's spleen to be dusted by separator B, will be cold The solidifying condensed a part of clean gas of workshop section is reversely passed through in separator A, realizes that the blowback to separator A purifies, this When separator A be blowback clean room, in blowback purification process, clean gas blowback is stuck in separator A metal sieve plate gap With the dust for accumulating in air flue, dust is taken out of separator A, into secondary cyclone.By secondary cyclone The pyrolysis gas for being mingled with micro dust after separation separated with one cyclonic after gaseous mixture mixing it is another rise enter separator B into Row dedusting separation；

When the pressure drop of 201 to the second air flue 201-1 of the first air flue of separator B increases, switching gas circuit makes separator A vents one's spleen to the heat of mixing as separation dirt pocket carry out separation dedusting again, and separator B is used as blowback clean room to carry out certainly again The blowback of body purifies, and recycles according to this, achievees the purpose that continuously to separate dedusting.

As shown in figure 5, referring to Fig.1, Fig. 3, Fig. 6 to Figure 15, pipe network of the invention include several Self controlling valves, several Pressure transmitter and pipeline, two separators are connected as above-mentioned Fig. 6 and integral structure shown in Fig. 9, two separators point It is not denoted as separator A and separator B, two separators are the first separator of the invention or are simultaneously this hair simultaneously Bright second of separator；

The outlet of primary cyclone 6 connects with the second air flue of separator A and the second air flue of separator B It connects；

The outlet of secondary cyclone 12 connects with the second air flue of separator A and the second air flue of separator B It connects；

The second air flue of separator A and the second air flue of separator B connect with the entrance of secondary cyclone 12 It connects；

The first air flue of separator A and the first air flue of separator B are connect with the entrance of condenser 8；

First air flue of the outlet of condenser 8 and the first air flue of separator and separator B is separately connected；

The second air flue of separator A and the second air flue of separator B are respectively arranged with first pressure transmitter 13-1 With second pressure transmitter 13-2；

On pipeline between the outlet of the first air flue and condenser 8 of separator A and between the entrance of condenser 8 The first Self controlling valve 12-1 and the second Self controlling valve 12-2 are respectively set on pipeline；

The second air flue of separator A is provided with third Self controlling valve 12-3 and the 4th Self controlling valve 12- parallel with one another 4, third Self controlling valve 12-3 are arranged on the pipeline between 12 entrance of the second air flue of separator A and secondary cyclone； 4th Self controlling valve 12-4 is connected by pipeline with the outlet of secondary cyclone 12 and the outlet of primary cyclone 6 respectively It connects；

Pipeline on pipeline between 8 entrance of the first air flue and condenser of separator B and between the outlet of condenser 8 On the 5th Self controlling valve 12-5 and the 6th Self controlling valve 12-6 is respectively set；

The second air flue of separator B is provided with the 7th Self controlling valve 12-7 and the 8th Self controlling valve 12- parallel with one another The pipeline between 12 entrance of the second air flue and secondary cyclone of separator B is arranged in 8, the 7th Self controlling valve 12-7 On；8th Self controlling valve 12-8 passes through the outlet of pipeline and secondary cyclone 12 and the outlet point of primary cyclone 6 It does not connect；

First Self controlling valve 12-1, third Self controlling valve 12-3, the 5th Self controlling valve 12-5 and the 8th Self controlling valve 12-8 It is connect with first pressure transmitter 13-1；

Second Self controlling valve 12-2, the 4th Self controlling valve 12-4, the 6th Self controlling valve 12-6 and the 7th Self controlling valve 12-7 It is connect with second pressure transmitter 13-2.

Pipe network of the invention, can be when the first separator be dusted separation, to by the opening and closing of Self controlling valve Two separators carry out blowback purification；When the second separator is dusted separation, it is net that blowback is carried out to the first separator Change；The fully automated control of the process, in production process, it is not necessary to it stops production, therefore can be realized continuously separating for pyrolysis of coal product, Production efficiency is substantially increased, saves time and economic cost, moreover it is possible to achieve energy-saving and emission reduction purposes, economic effect and Environmental Effect It is beneficial significant.

Referring to Figures 1 and 2, fine coal microwave-heating system of the invention further includes cooling chamber, cooler 10 and heat exchange station, micro- The semi-coke outlet 21 of wave pyrolysis oven 5, the solid outlet of primary cyclone 6 and secondary cyclone 12 solid outlet with The feed(raw material)inlet of cooling chamber connects；Cooling chamber is equipped with nitrogen inlet and nitrogen outlet, and dryness storehouse 4 is equipped with nitrogen inlet and nitrogen Gas outlet, the nitrogen outlet of dryness storehouse 4 and the nitrogen inlet of cooling chamber connect, nitrogen outlet and the first or second gold of cooling chamber Entrance, destilling tower 9 and the heat exchange station for belonging to coil pipe (205 or 105) are separately connected, and are respectively used to first or second metal coil pipe (205 or 105) and destilling tower 9 are heated, and heat exchange occurs in heat exchange station and cools down；The cooling entrance of cooler 10 with point The first air flue connection from device, the cold air outlet of heat exchange station are connect with the medium inlet of cooler 10, the medium of cooler 10 Outlet is connect with the nitrogen inlet of dryness storehouse 4 again after being combined into all the way with the outlet of first or second metal coil pipe (205 or 105).

As shown in Fig. 2, referring to Fig.1, Fig. 3, Fig. 5~Fig. 9, Figure 12 to Figure 15, fine coal microwave-heating product of the invention point From method, include the following steps：

Step 1, fine coal raw material is added in microwave-heating stove 5 feed, and fine coal carries out microwave thermal in microwave-heating stove 5 Solution, the heat of mixing for obtaining thermal decomposition product semi-coke, coal tar oil vapour and coal gas are vented one's spleen；

Step 2, the heat of mixing is vented one's spleen and is sent into primary cyclone 6 from pyrolysis gas outlet 14, primary cyclone 6 is right The heat of mixing, which is vented one's spleen, carries out one cyclonic separation, make the heat of mixing vent one's spleen in be mingled with semi-coke end separation；

Step 3, the heat of mixing then by step 2 handled is vented one's spleen a separator being passed through in thermal decomposition product separation system Be dusted separation, be further separated out the heat of mixing vent one's spleen in the semi-coke end that is mingled with, and the coal tar oil gasification that dust will be wrapped up, Separate dust with coal tar, dust is stopped to be detained by separator, and coal tar oil vapour and coal gas are after separator discharge Into condenser 8, condenser 8 makes coal tar steam liquefied, while clean gas is discharged；When the separation for being dusted separation When the dust that device is stopped reaches set amount, pipe network is switched over, and carries out step 4；

Step 4, the heat of mixing for having handled step 2, which is vented one's spleen, to be passed through in another separator, the separator carry out with The same separation process of step 3, meanwhile, a part of clean gas being discharged in condenser 8 introducing has been subjected to dedusting separation Separator, the separator for having carried out dedusting separation carries out blowback purification, makes to have carried out the separation dress of dedusting separation It sets the middle dust for stopping delay reversely to be blown out by clean gas and enter secondary cyclone 12, secondary cyclone 12 is right The coal gas and dust that blowback goes out carry out cyclonic separation, then the gas after separation is passed through to the separator for being dusted separation at this time In be dusted separation；When the dust that the separator for being dusted separation at this time is stopped reaches set amount, then into Row step 5；

Step 5, pipe network switches over again, then carries out step 4, with realize to the heat of mixing that step 2 has been handled vent one's spleen into The lasting separation of row.

To sum up, fine coal microwave-heating product separation method of the invention can be realized the continuous separation to pyrolysis of coal product, Production efficiency is improved, higher economic benefit can be created, there is good environmental benefit.

As shown in Fig. 2, referring to Fig.1, being discharged from microwave-heating stove 5, primary cyclone 6 and secondary cyclone 12 Solid product be sent into cooling chamber and cooled down by nitrogen, wherein the temperature of solid product from the discharge of microwave-heating stove 5 is 600-700 DEG C, the nitrogen temperature that cooling chamber comes out is 300-350 DEG C；

The nitrogen that cooling chamber comes out is divided into two-way again, destilling tower 9 is sent into all the way and condenses obtained liquid production to condenser 8 Object is distilled, and the nitrogen temperature come out from destilling tower 9 is 200-250 DEG C；The nitrogen that destilling tower 9 comes out is passed through heat exchange station again Pre- recuperation of heat is carried out, the temperature of nitrogen is made to be down to 25-40 DEG C；The nitrogen after cooling is passed through cooler 10 again, to clean gas Cool down, meanwhile, nitrogen is heated up, and the temperature of the nitrogen flowed out from 10 media outlet of cooler is 50-60 DEG C；

It is right in the first or second metal coil pipe (205 or 105) of separator that the another way nitrogen that cooling chamber comes out is passed through Entire separator is heated, and the temperature of the nitrogen come out from first or second metal coil pipe (205 or 105) outlet is 250- 300℃；

It is exported again by the nitrogen flowed out from 10 media outlet of cooler and from first or second metal coil pipe (205 or 105) The nitrogen inlet of dryness storehouse 4 is passed through after nitrogen mixing out together, raw material is dried, from the nitrogen outlet of dryness storehouse 4 Nitrogen out is passed through cooling chamber, cools down to solid product；

Each workshop section's heat demand of reasonable distribution of the present invention, without extraneous additional additional heat, heat utilization ratio is high, energy consumption drop It is low.

As shown in figure 5, detailed process is as follows to the separation of pyrolysis of coal product by the present invention referring to Fig. 6 to Figure 15：

Step 1, cooling chamber is passed through high-temperature medium into first or second metal coil pipe (205 or 105), and the first separation is filled Set 2014 and the second metallic sieve (206,106) in separator 2015 be heated to 300 DEG C or more；At this point, the 8th internally piloted valve Door 2012-8 and the 5th Self controlling valve 2012-5 is opened, remaining Self controlling valve is turned off；The heat of mixing that pyrolysis of coal generates is vented one's spleen It is passed through primary cyclone 6 and is dusted separation；

Step 2, then by the mixed gas after the separation of primary cyclone 6 from 2,015 second air flue of the second separator 201-1 is passed through the second separator 2015 and is dusted separation, and when dedusting separates, the solid particle in gaseous mixture is by metallic sieve (106,206) it filters, the coal tar oil gasification of dust is wrapped up in gaseous mixture, separates dust with coal tar, coal tar oil vapour and coal Gas escapes and enter condenser 8 from 2,015 first air flue 201 of the second separator, and in condenser 8, coal tar oil vapour is condensed It liquefies and is simultaneously discharged from the liquid outlet of condenser 8, distilled into destilling tower 9, obtain clean gas, clean gas is from condensation The discharge of 8 exhaust outlet of device；

Step 3, when second pressure transmitter 2013-2 detects the pressure of 2,015 second air flue 201-1 of the second separator When beyond preset range value, the 8th Self controlling valve 2012-8 and the 5th Self controlling valve 2012-5 receive second pressure transmitter The detection signal of 2013-2, and the 8th Self controlling valve 2012-8 and the 5th Self controlling valve 2012-5 is closed, meanwhile, the 4th internally piloted valve Door 2012-4 and the second Self controlling valve 2012-5 is opened, and the mixed gas after primary cyclone 6 separates passes through the first separation Device 2014 is dusted separation；Then the 6th Self controlling valve 2012-6 and the 7th Self controlling valve 2012-7 is opened, 8 row of condenser The cleaning coal gas of port discharge enters the second separator 2015 from 2,015 first air flue of the second separator, fills to the second separation The solid particle set on 2015 metallic sieves carries out blowback, is detached from solid particle from metallic sieve, then again from second point Enter secondary cyclone 12 from 2,015 second air flue 201-1 of device, secondary cyclone 12 is to carrying blowback solid The coal gas of particle is separated, the gas that the coal gas after the separation of secondary cyclone 12 is exported with primary cyclone 6 again Enter the first separator 2014 through the 4th Self controlling valve 2012-4 after body mixing and be dusted separation, when second pressure transmitter When 2013-2 detects that the pressure of 2,015 second air flue 201-1 of the second separator reaches preset range value, the 6th Self controlling valve 2012-6 and the 7th Self controlling valve 2012-7 is closed；

Step 4, when first pressure transmitter 2013 detects that the pressure of 2,014 second air flue 201-1 of the first separator is super Out when preset range value, the 4th Self controlling valve 2012-4 and the second Self controlling valve 2012-5 receive first pressure transmitter 2013 Signal is detected, and closes the 4th Self controlling valve 2012-4 and the second Self controlling valve 2012-5, meanwhile, the 8th Self controlling valve 2012-8 It is opened with the 5th Self controlling valve 2012-5, the mixed gas after primary cyclone 6 and the separation of secondary cyclone 12 is logical It crosses the second separator 2015 and is dusted separation；Then the first Self controlling valve 2012-1 and third Self controlling valve 2012-3 are beaten It opens, the cleaning coal gas of 8 exhaust outlet of condenser discharge enters the first separator from 2,014 first air flue 201 of the first separator 2014, blowback is carried out to the solid particle on 201 metallic sieve of the first separator, takes off solid particle from metallic sieve From then entering secondary cyclone 12, secondary cyclone 12 from 2,014 second air flue 201-1 of the first separator again The coal gas for carrying blowback solid particle is separated, through secondary cyclone 12 separation after coal gas again with one cyclonic Enter the second separator 2015 through third Self controlling valve 2012-3 after the gas mixing that separator 6 exports and be dusted separation, When first pressure transmitter 2013-1 detects that the pressure of 2,014 second air flue 201-1 of the first separator reaches preset range value When, the first Self controlling valve 2012-1 and third Self controlling valve 2012-3 are closed；

Step 5, step 3 is repeated to step 4, realizes the lasting separation to pyrolysis of coal product.

The principle of the present invention is following (two kinds of separator principles of the invention are similar, are illustrated for second)：

Coal tar exists in the form of coal tar oil and gas in hot environment, can be by mixed gas using solid gas separator In the separation of trace solid particle, further separating liquid gas product.Separator through the invention is to powder after pulverized coal pyrolysis The process that dirt is separated with coal tar, coal gas is as follows：

Such as Fig. 5~Figure 15, led to combined with Figure 1 and Figure 2, by high-temperature gas intake header 102 into the second metal coil pipe 105 Enter high temperature nitrogen to heat entire separator, when the temperature of the second metallic sieve 106 is reached 300 DEG C or more, then Gaseous mixture after pulverized coal pyrolysis is passed through to the inner cavity of metal sheet frame 104 from the first air flue 201, gaseous mixture is in metal sheet frame 104 Inner cavity is heated, and what is be heated closes the coal tar oil gasification in gas, when gaseous mixture passes through the second metallic sieve 106, solid particle quilt The filtering of second metallic sieve 106, the coal tar oil and gas and coal gas that coal tar oil gasification generates are by metallic sieve degassing, and from metal plate Outlet the second air flue 201-1 of frame 104 is discharged；

When increasing from the pressure drop of 201 to the second air flue 201-1 of the first air flue, stopping is passed through the mixing after pulverized coal pyrolysis Gas, then it is passed through purification gas from the second air flue 201-1 to the inner cavity of metal sheet frame 104, make the solid on the second metallic sieve 106 Particle is separated with the second metallic sieve 106, and the solid particle isolated is discharged from 104 entrance of metal sheet frame through the first air flue 201.

Preferably, during the separation process, make the flow direction and second of the gaseous mixture in single Combined sieve board 109 after pulverized coal pyrolysis The flow direction of high-temperature medium is opposite in metal coil pipe 105.

In the present invention, using high-temperature gas as high-temperature medium, temperature is 350 DEG C or more, and high-temperature gas passes through metal dish It manages and metallic sieve is heated to 300 DEG C or more, the gaseous mixture containing coke fines, coal tar oil and gas and coal gas is heated, and makes to mix Coal tar oil gasification in gas, solid particle are stuck in metallic sieve, coal tar oil and gas and coal gas and go air-liquid to separate work by metallic sieve Section, to realize the isolation of purified function of separator.When separator is from the pressure of 201 to the second air flue 201-1 of the first air flue When falling-rising is high, it is reversely blown into purified coal gas to separator, the solid product being stuck on sieve is blown out into separator, from And separator is made to separate dedusting function " regeneration ".

As shown in Fig. 7, Fig. 8, Figure 14 and Figure 15, the gaseous mixture containing coke fines, coal tar oil and gas and coal gas is from metal sheet frame 104 lower parts (i.e. entrance) enter, and top (exports) evolution, this process is dedusting separation process；As shown in figure 11, blowback air is then It is to enter from 104 top of metal sheet frame (exporting), lower part (i.e. entrance) evolution.

As shown in Figure 1 to 4, raw material send to sifter 2 from raw material cabin 1 and carries out gradation sizing, will meet Particle size requirements Raw material is sent to dryness storehouse 4, and the raw material that grade is unsatisfactory for requiring is sent to grinder 2, and screen size requires to be less than 15mm, after crushing Raw material send to sifter 2.Enter furnace from the top feed entrance 13 of microwave-heating stove 5 by the dry raw material of dryness storehouse 4 It is interior, after filling raw material, microwave generator 17 and material mixing device 18 are opened, with the progress of pyrolysis, the heat of mixing is vented one's spleen in pumping impeller Under 15 auxiliary, passes through wire mesh 16 and enter primary cyclone 6, semi-coke is exported from the semi-coke of 5 bottom of microwave-heating stove 21 discharges.The heat of mixing for being mingled with a small amount of semi-coke end is vented one's spleen after primary cyclone 6, into separation (this time-division of dirt pocket 7 Vent one's spleen as separation dirt pocket the heat of mixing from device A and carry out separation dedusting), at this point, the heat of mixing is vented one's spleen, the semi-coke end being mingled with is complete Portion is separated.Pyrolysis gas cools down through condenser 8, and liquid phase separation, coal tar is flowed out by 8 bottom of condenser, and coal gas escapes from top Out.Coal tar is heated by destilling tower 9, isolates light, heavy oil and pyrolysis water is divided into two-way after coal gas enters condenser 8：One Road goes cooler 10 to cool down, and obtains clean gas, and returning to blowback clean room 11 all the way, (separator B is by blowback at this time, by clean Purified gas carries out blowback purification), blowback absorption collection or the semi-coke end being stuck among corrugated plating, the clean gas of blowback is mingled with micro Semi-coke end enters secondary cyclone 12, and the coal gas after the separation of semi-coke end is again introduced into separation dirt pocket 7.By one cyclonic Separator and the semi-coke of secondary cyclone recycling mix submitting with thermal decomposition product semi-coke.

Referring to Fig. 2, when raw material enters microwave-heating stove 5, blender 18 rotates counterclockwise, and raw material is uniformly distributed to heat It solves in furnace.In pyrolytic process, blender 18 is rotated clockwise, and raw material intermediate and bottom in furnace is stirred to outside, so that former Material uniformly inhales wave.

Microwave-heating system of the present invention and product separation method are all made of nitrogen circulation heat exchange, to solve heat The insufficient problem of solution preocess heat utilization, reduces environmental pollution and water resources consumption, meanwhile, efficiently separate solid, liquid phase Thermal decomposition product greatly improves pyrolysis efficiency, is beneficial to energy conservation emission reduction, system consecutive production easy to accomplish and industrialization promotion.

The present disclosure additionally applies for coal tar oil vapours and coal gas that the pyrolysis of the raw materials such as oil shale, biomass, peat, sludge generates The heat of mixing, which is vented one's spleen, carries out thermal decomposition product separation.

The above examples are only used to illustrate the technical scheme of the present invention and are not limiting.Although referring to embodiment to the present invention into Detailed description is gone, it will be apparent to an ordinarily skilled person in the art that under the premise without departing from the spirit and scope of the present invention To modification or equivalent substitute that the present invention carries out, should all cover within the scope of the present invention.In addition, unless stated otherwise, So any embodiment all or part of in combination with any other embodiments all or part of come using.

Claims (10)

1. a kind of fine coal microwave-heating system, which is characterized in that including feed, microwave-heating stove (5), primary cyclone (6), secondary cyclone (12) and thermal decomposition product separation system offer feed(raw material)inlet (13), heat in microwave-heating stove (5) It vents one's spleen outlet (14) and semi-coke outlet (21), feed is connected to the feed(raw material)inlet (13) of microwave-heating stove (5), pyrolysis gas outlet (14) it is connected to the entrance of primary cyclone (6), the gas outlet of primary cyclone (6) and secondary cyclone (12) gas outlet is connect with thermal decomposition product separation system；

Thermal decomposition product separation system includes condenser (8) and two for carrying out the separators of Oil-gas Separation to pyrolysis gas, and two A separator is connected by pipe network, pyrolysis gas can be made to realize forward and reverse in each separator by the pipe network Flowing, condenser (8), primary cyclone (6) and secondary cyclone (12) are connect with the pipe network.

2. a kind of fine coal microwave-heating system according to claim 1, which is characterized in that microwave-heating stove (5) includes furnace Body and stirrer drive, feed(raw material)inlet (13) and pyrolysis gas outlet (14) are opened in the upper end of furnace body, and semi-coke exports (21) It is opened in the lower end of furnace body；Microwave generator (17) and blender (18), blender (18) and stirrer-driven are equipped in furnace body The output shaft (20) of device connects, and microwave generator (17) is arranged on the furnace wall of furnace body, and furnace body is arranged in blender (18) Middle part, and it is located at the underface of feed(raw material)inlet (13).

3. a kind of fine coal microwave-heating system according to claim 2, which is characterized in that blender (18) includes support rod (18-1) and drapery panel (18-2), support rod (18-1) and the output shaft (20) of stirrer drive are coaxially connected, drapery panel (18-2) is helical form, and the inside edge of drapery panel (18-2) is fixedly connected with support rod (18-1), and drapery panel (18-2) is from upper To lower in up-small and down-big pyramidal structure.

4. a kind of fine coal microwave-heating system according to claim 2, which is characterized in that furnace body inside is in pyrolysis gas outlet (14) pumping impeller (5) and wire mesh (16) are equipped at, wire mesh (16) is located at pumping impeller (5) and pyrolysis gas outlet (14) lower part, for being filtered to the pyrolysis gas generated in furnace body.

5. a kind of fine coal microwave-heating system according to claim 1, which is characterized in that separator includes the first air flue (201), the second air flue (201-1), two side plates (207) and several metal sandwich corrugated platings (204)；

Face setting before and after two side plates (207), from the left side of two side plates (207) to the right, several metal sandwich ripples Plate (204) is parallel to each other and is arranged at intervals between two side plates (207), the front and back side of all metal sandwich corrugated platings (204) Wall is fixedly connected with two side plates (207) respectively, from the lower part of two side plates (207) to top, two adjacent metal sandwich Waveform channel is formed between corrugated plating (204)；

The first metallic sieve (206) are provided between two adjacent metal sandwich corrugated platings (204)；Each metal sandwich ripple Metal coil pipe for heating is provided in the interlayer of plate (204)；

First air flue (201) and the second air flue (201-1) are connect with the upper and lower part of two side plates (207) respectively, the first gas The upper end in the waveform channel formed between road (201) and metal sandwich corrugated plating (204) is connected to, the second air flue (201-1) with The lower end in the waveform channel formed between metal sandwich corrugated plating (204) is connected to.

6. a kind of fine coal microwave-heating system according to claim 1, which is characterized in that separator includes the first air flue (201), the second air flue (201-1) and several Combined sieve boards, each Combined sieve board have entrance and exit；

Combined sieve board includes metal sheet frame (104), metal coil pipe and the second metallic sieve (106), metal sheet frame (104) be with Entrance, outlet and side wall frame structure, the entrance of all metal sheet frames (104) is connected to the first air flue (201), all metals The outlet of sheet frame (104) is connected to the second air flue (201-1), and the second metallic sieve (106) setting is multiple and is arranged in metal plate In frame (104)；To export direction, the mesh number of the second metallic sieve (106) is incremented by entrance along metal sheet frame (104)；Metal dish Pipe is arranged on the side wall of metal sheet frame (104).

7. a kind of fine coal microwave-heating system according to claim 5 or 6, which is characterized in that the pipe network includes several A Self controlling valve, several pressure transmitters and pipeline, two separators are denoted as separator A and separator B respectively；

The outlet of primary cyclone (6) and the second air flue of the second air flue of separator A and separator B are all connected with；

The outlet of secondary cyclone (12) and the second air flue of the second air flue of separator A and separator B are all connected with；

The second air flue of separator A and the second air flue of separator B are connect with the entrance of secondary cyclone (12)；

The first air flue of separator A and the first air flue of separator B are connect with the entrance of condenser (8)；

First air flue of the outlet of condenser (8) and the first air flue of separator and separator B is separately connected；

The second air flue of separator A and the second air flue of separator B be respectively arranged with first pressure transmitter (13-1) and Second pressure transmitter (13-2)；

On pipeline between the outlet of the first air flue and condenser (8) of separator A and between the entrance of condenser (8) The first Self controlling valve (12-1) and the second Self controlling valve (12-2) are respectively set on pipeline；

The second air flue of separator A is provided with third Self controlling valve (12-3) and the 4th Self controlling valve (12- parallel with one another 4), the pipe that third Self controlling valve (12-3) is arranged between the second air flue of separator A and secondary cyclone (12) entrance On road；Outlet and primary cyclone (6) of 4th Self controlling valve (12-4) by pipeline and secondary cyclone (12) Outlet be separately connected；

Pipeline on pipeline between the first air flue and condenser (8) entrance of separator B and between condenser (8) outlet On the 5th Self controlling valve (12-5) and the 6th Self controlling valve (12-6) is respectively set；

The second air flue of separator B is provided with the 7th Self controlling valve (12-7) and the 8th Self controlling valve (12- parallel with one another 8), the 7th Self controlling valve (12-7) is arranged between the second air flue of separator B and secondary cyclone (12) entrance On pipeline；Outlet and primary cyclone of 8th Self controlling valve (12-8) by pipeline and secondary cyclone (12) (6) outlet is separately connected；

First Self controlling valve (12-1), third Self controlling valve (12-3), the 5th Self controlling valve (12-5) and the 8th Self controlling valve (12-8) is connect with first pressure transmitter (13-1)；

Second Self controlling valve (12-2), the 4th Self controlling valve (12-4), the 6th Self controlling valve (12-6) and the 7th Self controlling valve (12-7) is connect with second pressure transmitter (13-2).

8. a kind of fine coal microwave-heating system according to claim 5 or 6, which is characterized in that feed includes raw material cabin (1), sifter (2), grinder (3) and dryness storehouse (4), raw material cabin (1) discharge port are connect with the feed inlet of sifter (2), sieve The discharge port of device (2) is divided to connect with the feed inlet of dryness storehouse (4), the discharge port of dryness storehouse (4) and the raw material of microwave-heating stove (5) Entrance (13) connection, the feed inlet of grinder (3) are connect with the discharge port of sifter (2), the discharge port of grinder (3) and screening The feed inlet of device (2) connects；

Fine coal microwave-heating system further includes destilling tower (9), the feed(raw material)inlet of destilling tower (9) and the condensed fluid of condenser (8) Outlet connection；

Fine coal microwave-heating system further includes cooling chamber, cooler (10) and heat exchange station, the semi-coke outlet of microwave-heating stove (5) (21), the raw material of the solid outlet and cooling chamber of the solid outlet of primary cyclone (6) and secondary cyclone (12) Entrance connection；Cooling chamber is equipped with nitrogen inlet and nitrogen outlet, and dryness storehouse (4) is equipped with nitrogen inlet and nitrogen outlet, does The nitrogen outlet of dry storehouse (4) and the nitrogen inlet of cooling chamber connect, entrance, the distillation of the nitrogen outlet and metal coil pipe of cooling chamber Tower (9) and heat exchange station are separately connected, and are respectively used to heat metal coil pipe and destilling tower (9), and heat occurs in heat exchange station and hands over The cooling of swap-in row；The cooling entrance of cooler (10) is connected to the first air flue of separator, the cold air outlet of heat exchange station with it is cold But the medium inlet connection of device (10), the media outlet of cooler (10) and the outlet of metal coil pipe be combined into all the way after again with drying The nitrogen inlet in storehouse (4) connects.

9. a kind of fine coal microwave-heating product separation based on fine coal microwave-heating system described in claim 1-8 any one Method, which is characterized in that include the following steps：

Step 1, fine coal raw material is added in microwave-heating stove (5) feed, and fine coal carries out microwave thermal in microwave-heating stove (5) Solution, the heat of mixing for obtaining thermal decomposition product semi-coke, coal tar oil vapour and coal gas are vented one's spleen；

Step 2, the heat of mixing is vented one's spleen and is sent into primary cyclone (6) from pyrolysis gas outlet (14), primary cyclone (6) Vent one's spleen the heat of mixing and carry out one cyclonic separation, make the heat of mixing vent one's spleen in be mingled with semi-coke end separation；

Step 3, a vent one's spleen separator being passed through in thermal decomposition product separation system of the heat of mixing then by step 2 handled carries out Dedusting separation, be further separated out the heat of mixing vent one's spleen in the semi-coke end that is mingled with, and the coal tar oil gasification that will wrap up dust makes powder Dirt is separated with coal tar, and dust is stopped to be detained by separator, and coal tar oil vapour and coal gas enter after separator discharge Condenser (8), condenser (8) makes coal tar steam liquefied, while clean gas is discharged；When the separation for being dusted separation When the dust that device is stopped reaches set amount, pipe network is switched over, and carries out step 4；

Step 4, the heat of mixing for having handled step 2, which is vented one's spleen, to be passed through in another separator, which carries out and step 3 Same separation process, meanwhile, a part of clean gas being discharged in condenser (8) is introduced to point for having carried out dedusting separation From device, the separator for having carried out dedusting separation carries out blowback purification, makes to have carried out in the separator of dedusting separation Stop the dust being detained reversely to be blown out by clean gas and enter secondary cyclone (12), secondary cyclone (12) is right The coal gas and dust that blowback goes out carry out cyclonic separation, then the gas after separation is passed through to the separator for being dusted separation at this time In be dusted separation；When the dust that the separator for being dusted separation at this time is stopped reaches set amount, then into Row step 5；

Step 5, pipe network switches over again, then carries out step 4, is held with realizing to vent one's spleen to the heat of mixing that step 2 has been handled Continuous separation.

10. fine coal microwave-heating product separation method according to claim 9, which is characterized in that from microwave-heating stove (5), primary cyclone (6) and the solid product of secondary cyclone (12) discharge are sent into cooling chamber and are carried out by nitrogen It is cooling, wherein the temperature for the solid product being discharged from microwave-heating stove (5) is 600-700 DEG C, the nitrogen temperature that cooling chamber comes out It is 300-350 DEG C；

The nitrogen that cooling chamber comes out is divided into two-way again, the liquid that destilling tower (9) obtain condenser (8) condensation is sent into all the way and produces Object is distilled, and the nitrogen temperature come out from destilling tower (9) is 200-250 DEG C；The nitrogen that destilling tower (9) come out is passed through again and is changed Heat stations carry out pre- recuperation of heat, and the temperature of nitrogen is made to be down to 25-40 DEG C；The nitrogen after cooling is passed through cooler (10) again, to clean Purified gas cools down, meanwhile, nitrogen is heated up, and the temperature of the nitrogen flowed out from cooler (10) media outlet is 50- 60℃；

The another way nitrogen that cooling chamber comes out, which is passed through in the metal coil pipe of separator, heats entire separator, from gold The temperature for belonging to the nitrogen that coil outlets come out is 250-300 DEG C；

Lead to together after being mixed again from the nitrogen that cooler (10) media outlet flows out and from the nitrogen that metal coil outlets come out The nitrogen inlet for entering dryness storehouse (4), is dried raw material, and the nitrogen come out from the nitrogen outlet of dryness storehouse (4) is passed through cooling Room cools down solid product.