阅读说明：本技术 一种热解荒煤气粘结除尘方法及移动床过滤除尘器 (A kind of pyrolysis raw coke oven gas bonding dust removal method and moving bed filter collector ) 是由 王树宽 于 2019-09-18 设计创作，主要内容包括：本发明属于煤热解技术领域,具体涉及一种热解荒煤气粘结除尘方法及移动床过滤除尘器,该方法是将低温原料粒煤与高温荒煤气逆向换热,荒煤气冷却,析出部分高沸点的煤焦油并附着在粒煤上,使粒煤外表面具有粘性可通过碰撞粘结吸附捕获荒煤气中的粉尘,使荒煤气除尘后排出,而粉尘和煤焦油粘附在粒煤表面经进一步热解固化形成半焦,同时,煤焦油发生二次热解,其中重质组分裂解为轻质组分,使焦油轻质化,而粉尘固化在半焦上,达到荒煤气除尘与煤焦油轻质化同时进行的目的；同时,本发明提供的移动床过滤除尘器能够实现荒煤气热解粘结的除尘方法,其结构设计简单巧妙,运行稳定且能耗低。(The invention belongs to pyrolysis of coal technical fields, dust removal method and moving bed filter collector are bonded more particularly to a kind of pyrolysis raw coke oven gas, this method is by low temperature feedstock beans and high temperature raw coke oven gas reverse heat-exchange, raw coke oven gas is cooling, the high boiling coal tar in part is precipitated and is attached on beans, make beans outer surface that there is viscosity can bond the dust in absorption capture raw coke oven gas by collision, it is discharged after making raw coke oven gas dedusting, and dust and coal tar are adhered to beans surface and are formed by curing semicoke through further pyrolysis, simultaneously, secondary pyrolysis occurs for coal tar, wherein heavy component is cracked into light components, make tar lighting, and dust is solidificated on semicoke, achieve the purpose that raw coke oven gas dedusting carries out simultaneously with coal tar lighting；Meanwhile moving bed filter collector provided by the invention can be realized the dust removal method of raw coke oven gas pyrolysis bonding, structure design is simple ingenious, stable and low energy consumption.)

1. a kind of pyrolysis raw coke oven gas bonds dust removal method, it is characterised in that: this method is by low temperature feedstock beans and high temperature famine coal Gas reverse heat-exchange, raw coke oven gas is cooling, and the high boiling coal tar in part is precipitated and is attached on beans, has beans outer surface viscous Property can by collision bond absorption capture raw coke oven gas in dust, be discharged after making raw coke oven gas dedusting, and dust and coal tar adherency It is formed by curing semicoke through further pyrolysis on beans surface, meanwhile, secondary pyrolysis occurs for coal tar, and wherein heavy component is cracked into Light components make tar lighting, and dust is solidificated on semicoke, is reached raw coke oven gas dedusting and is carried out simultaneously with coal tar lighting Purpose.

2. pyrolysis raw coke oven gas according to claim 1 bonds dust removal method, which is characterized in that the method specifically:

(1) feed coal is filtered out to the beans for being less than 80mm greater than 3mm, is slowly moved down into moving bed filter collector, Movement speed is not more than 1.5m/h, exchanges heat with the upward high temperature raw coke oven gas of adverse current, and the gas velocity of raw coke oven gas is not more than 1m/h, makes 480- 800 DEG C of high temperature raw coke oven gas is down to 150-280 DEG C of cooling, and the high boiling coal tar in part is precipitated and is attached on beans, makes grain The outer surface of coal has viscosity；

(2) dust in raw coke oven gas is attracted to beans outer surface by collision, bonding, and raw coke oven gas is made to realize refined dedusting, dust Beans surface is attached to coal tar enters in pyrolysis reactor further pyrolysis be formed by curing semicoke, meanwhile, coal tar occurs Secondary pyrolysis, wherein heavy component is cracked into light components, makes tar lighting, and dust is solidificated on semicoke, reaches waste coal The purpose that gas dedusting and coal tar lighting carry out simultaneously.

3. pyrolysis raw coke oven gas according to claim 2 bonds dust removal method, which is characterized in that the step (2) specifically:

(2.1) raw coke oven gas makes its evenly dispersed, air-flow in dispersion process in moving bed filter collector through gas distributor (3) Disturbance loosely make the dust in raw coke oven gas by collision, bonding beans, is attracted to beans outer surface, makes raw coke oven gas Realize refined dedusting；

(2.2) coal tar and dust being precipitated in raw coke oven gas are attached to beans surface, are further pyrolyzed into pyrolysis reactor It is formed by curing semicoke, pyrolysis temperature is 550~850 DEG C, meanwhile, secondary pyrolysis occurs for coal tar, and wherein heavy component is cracked into Light components make tar lighting, and dust is solidificated on semicoke, is reached raw coke oven gas dedusting and is carried out simultaneously with coal tar lighting Purpose.

4. pyrolysis raw coke oven gas according to claim 3 bonds dust removal method, which is characterized in that the step (2.1) is specific Are as follows:

Raw coke oven gas makes its evenly dispersed, flow perturbation in dispersion process in moving bed filter collector through gas distributor (3) Beans is carried out loosely, while being heated to around gas distributor (3), prevents the coal tar carbon distribution being precipitated, and in raw coke oven gas Dust is attracted to beans outer surface by collision, bonding, and raw coke oven gas is made to realize refined dedusting.

5. a kind of pyrolysis raw coke oven gas described in claim 1 bonds dust removal method moving bed filter collector, which is characterized in that Including beans storehouse (1), moving bed filtering cabin (2), heat tracing pipe group and gas distributor (3)；Wherein,

Beans storehouse (1), discharge port are connected to the feeding inlet a of moving bed filtering cabin (2)；

Heat tracing pipe group is arranged on the side wall of moving bed filtering cabin (2), to moving bed filtering cabin (2) bulkhead tracing thermal-insulating, reduces Heat waste guarantees side wall temperatures, prevents tar in bulkhead condensation；

Gas distributor (3), setting draw the gas entered in moving bed filtering cabin (2) in the lower part of moving bed filtering cabin (2) Flow point dissipates, it is made to be evenly distributed in moving bed filtering cabin (2).

6. moving bed filter collector according to claim 5, which is characterized in that the gas distributor (3) is bilayer It is jacket structured, it is internally provided with the cavity passage (5) that can fill hot steam.

7. moving bed filter collector according to claim 6, which is characterized in that the gas distributor (3) include into The distribution arms (32) that tracheae (33), single layer coil tube (31) and setting are connected in coil pipe (31) with coil pipe (31), air inlet pipe (33) both ends are arranged on the side wall of moving bed filtering cabin (2) and through internal with single layer coil tube (31).

8. moving bed filter collector according to claim 6, which is characterized in that the gas distributor (3) include into Tracheae (33), distribution arms (32) and the multilayer coil pipe (31) being arranged concentrically pass through distribution arms between adjacent coil pipe (31) (32) be connected to, air inlet pipe (33) both ends be arranged on the side wall of moving bed filtering cabin (2) and through it is internal with coil pipe (31) and with Multilayer coil pipe (31) connection.

9. moving bed filter collector according to claim 6 or 7, which is characterized in that the coil pipe (31) is that section is The tubular structure of inverted V type.

10. moving bed filter collector according to claim 9, which is characterized in that the top angle of the coil pipe (31) It is 30~70 °.

Technical field

The invention belongs to pyrolysis of coal technical fields, and in particular to a kind of pyrolysis raw coke oven gas bonding dust removal method and moving bed mistake Filtering dust remover.

Background technique

Pyrolysis of coal is the faucet that utilizes of coal classification sub-prime, no matter which kind of method for pyrolysis, be pyrolyzed the raw coke oven gas dedusting of generation It is the key that pyrolysis, is pyrolyzed in raw coke oven gas and contains a large amount of tar gas, cooling tar meeting condensation, so generally being removed online using high temperature Dirt, pyrolysis dedusting are divided into rough dedusting and refined dedusting, and the mainly cyclone dust collectors of rough dedusting, the limitation of whirlwind incising control can not Remove 3um dust below, cause tar product dust content to be unable to control within 5%, subsequent processing cost sharply on Rise, or even be unable to satisfy the requirement of deep processing, for guarantee system can stable operation, need finer dedusting side under high temperature Formula.

The optional mode of raw coke oven gas refined dedusting mainly has stratum granulosum dedusting, metal tube dust removal by filtration, electric precipitation etc..But by Tar gas in raw coke oven gas is very unstable, polycondensation and cracking reaction constantly occurs, electric precipitation and membrane tube filter easy carbon distribution can not Stablize long-term operation；And granule dedusting can achieve technique requirement under the conditions of sufficiently low gas velocity, cutting mechanisms are logical It crosses collision and slows down and intercept dedusting, it is desirable that gas velocity is not higher than 0.2 meter per second, and it is especially huge that too low gas velocity will cause equipment, and equipment is huge Greatly, industrially can not almost implement, filtrate temperature and gas temperature need to be consistent in addition, and tar is prevented to be precipitated, and filtrate needs System complex is burnt in soot blowing or coke burning regeneration, regeneration, and investment operating cost is high.

Summary of the invention

In order to solve deficiency present in prior art raw coke oven gas refined dedusting technology, the present invention provides a kind of raw coke oven gas heat Solution bonding dust removal method, utilizes cryogenic particles raw coal, and raw coke oven gas is cooling, while allowing the high boiling coal in part in raw coke oven gas Tar is precipitated and is attached on coal grain, and the dust of collision is captured dedusting using the cementability of tar, realizes that dedusting and tar are light Matter purpose.

Meanwhile it crossing and filtering out the present invention provides a kind of moving bed that can be realized above-mentioned raw coke oven gas pyrolysis bonding dust removal method Dirt device, structure design is simple ingenious, stable and low energy consumption.

The technical scheme adopted by the invention is that:

A kind of pyrolysis raw coke oven gas bonding dust removal method, this method is inversely to change low temperature feedstock beans and high temperature raw coke oven gas Heat, raw coke oven gas is cooling, and the high boiling coal tar in part is precipitated and is attached on beans, makes beans outer surface that there is viscosity can pass through Dust in collision bonding absorption capture raw coke oven gas, is discharged after making raw coke oven gas dedusting, and dust and coal tar are adhered to beans table Face is formed by curing semicoke through further pyrolysis, meanwhile, secondary pyrolysis occurs for coal tar, and wherein heavy component is cracked into lightweight group Point, make tar lighting, and dust is solidificated on semicoke, reaches the mesh that raw coke oven gas dedusting and coal tar lighting carry out simultaneously 's.

It further limits, the method specifically:

(1) feed coal is filtered out to the beans for being less than 80mm greater than 3mm, into moving bed filter collector slowly to moving down Dynamic, movement speed is not more than 1.5m/h, exchanges heat with the upward high temperature raw coke oven gas of adverse current, and the gas velocity of raw coke oven gas is not more than 1m/h, makes 480-800 DEG C of high temperature raw coke oven gas is down to 150-280 DEG C of cooling, and the high boiling coal tar in part is precipitated and is attached on beans, Making the outer surface of beans has viscosity；

(2) dust in raw coke oven gas is attracted to beans outer surface by collision, bonding, and raw coke oven gas is made to realize refined dedusting, Dust and coal tar, which are attached to beans surface and enter in pyrolysis reactor further pyrolysis, is formed by curing semicoke, meanwhile, coal tar Secondary pyrolysis occurs, wherein heavy component is cracked into light components, make tar lighting, and dust is solidificated on semicoke, is reached The purpose that raw coke oven gas dedusting and coal tar lighting carry out simultaneously.

It further limits, the step (2) specifically:

(2.1) raw coke oven gas makes its evenly dispersed, gas in dispersion process in moving bed filter collector through gas distributor 3 Flow disturbance loosely make the dust in raw coke oven gas by collision, bonding beans, is attracted to beans outer surface, makes waste coal Gas realizes refined dedusting；

(2.2) coal tar and dust being precipitated in raw coke oven gas are attached to beans surface, into pyrolysis reactor further Pyrolysis is formed by curing semicoke, and pyrolysis temperature is 550~850 DEG C, meanwhile, secondary pyrolysis occurs for coal tar, and wherein heavy component is split Solution is light components, makes tar lighting, and dust is solidificated on semicoke, reaches raw coke oven gas dedusting and coal tar lighting simultaneously The purpose of progress.

It further limits, the step (2.1) specifically:

Raw coke oven gas through gas distributor 3 make its in moving bed filter collector it is evenly dispersed, air-flow is disturbed in dispersion process It is dynamic that beans is carried out loosely, while 3 surrounding of gas distributor is heated, the coal tar carbon distribution being precipitated is prevented, and in raw coke oven gas Dust is attracted to beans outer surface by collision, bonding, and raw coke oven gas is made to realize refined dedusting.

A kind of above-mentioned pyrolysis raw coke oven gas bonding dust removal method moving bed filter collector comprising beans storehouse 1, movement Bed filtering cabin 2, heat tracing pipe group and gas distributor 3；Wherein,

Beans storehouse 1, discharge port are connected to the feeding inlet a of moving bed filtering cabin 2；

Heat tracing pipe group is arranged on the side wall of moving bed filtering cabin 2, to 2 bulkhead tracing thermal-insulating of moving bed filtering cabin, reduces Heat waste guarantees side wall temperatures, prevents tar in bulkhead condensation.Gas distributor 3 is arranged under moving bed filtering cabin 2 Portion drains dispersion to the gas entered in moving bed filtering cabin 2, it is made to be evenly distributed in moving bed filtering cabin 2.

It further limits, above-mentioned gas distributor 3 is double layer jacket structure, is internally provided with the sky that can fill hot steam Chamber channel 5 can fill hot steam in cavity passage 5 and effectively prevent tar carbon distribution.

Further limit, above-mentioned gas distributor 3 include air inlet pipe 33, single layer coil tube 31 and be arranged in coil pipe 31 with The distribution arms 32 that coil pipe 31 is connected to, 33 both ends of air inlet pipe are arranged on the side wall of moving bed filtering cabin 2 and run through and single-layered disk Inside pipe 31.

It further limits, above-mentioned gas distributor 3 includes air inlet pipe 33, distribution arms 32 and the multilayer disc being arranged concentrically Pipe 31 is connected between adjacent coil pipe 31 by distribution arms 32, and 33 both ends of air inlet pipe are arranged on the side wall of moving bed filtering cabin 2 And it is connected to through with inside coil pipe 31 and with multilayer coil pipe 31.

It further limits, above-mentioned coil pipe 31 is the tubular structure that section is inverted V type, on the one hand utilizes the V that falls of coil pipe 31 Localized clusters are carried out to the raw coke oven gas of rising at the top of type, increases air pressure, improves its flowing velocity；On the other hand, inverted V type top is utilized Portion evacuates the semicoke of pyrolysis, prevents its knot tying or tar carbon distribution.

It further limits, the top angle of above-mentioned coil pipe 31 is 30~70 °.

Raw coke oven gas pyrolysis bonding dust removal method of the invention, which is mainly utilized, is inversely changed using raw material beans with raw coke oven gas The high temperature coal-tar of the caking property high temperature tar capture dust that the small part that sweat goes out has, dust and precipitation is bonded in particulate coal Surface solidifies in the pyrolytic process of next step.Compared with prior art, it mainly has the advantages that

(1) present invention heats beans using the thermal energy in raw coke oven gas, while being dropped using low temperature beans to high temperature raw coke oven gas Temperature, the higher boiling coal tar oil component being precipitated in raw coke oven gas are attached on beans, capture the dust in raw coke oven gas, and beans enters later Further pyrolysis is formed by curing semicoke in pyrolysis reactor, and beans is pyrolyzed and is coupled with raw coke oven gas dedusting, thermal energy is made full use of, Reduce energy consumption.

(2) secondary pyrolysis occurs during pyrolysis of coal for the higher boiling coal tar oil component that raw coke oven gas of the invention is precipitated, weight Matter component is cracked into light component, to reach the density for reducing tar, makes tar lighting, i.e. dedusting, pyrolysis of coal and tar Lighting integration is completed.

(3) present invention captures the dust in raw coke oven gas using the coal tar of the higher boiling, high-adhesiveness that are precipitated in raw coke oven gas, High dust collection efficiency and filtrate are not necessarily to regeneration cycle, simple process.

(4) moving bed filter collector equipment volume of the invention is small, simple for structure, stable, and low energy consumption, removes Dirt effect is high, has good popularization and application foreground.

Detailed description of the invention

Fig. 1 is the structural schematic diagram of moving bed filter collector.

Fig. 2 is 3 structural schematic diagram of air inlet distributor of A-A sectional plane in Fig. 1.

Fig. 3 is 31 sectional view of coil pipe of air inlet distributor 3.

In figure, 1- beans storehouse, 2- moving bed filtering cabin, 3- gas distributor, 31- coil pipe, 32- distribution arms, 33- air inlet It manages, the upper heat tracing pipe of 4-, 5- cavity passage, heat tracing pipe under 6-, a- feeding inlet, d- discharge gate, the clean raw coke oven gas outlet b-, c1, c2- High temperature raw coke oven gas entrance, e1, the steam inlet e2-, f1, f2- steam (vapor) outlet.

Specific embodiment

Technical solution of the present invention is further described now in conjunction with drawings and examples, and the present invention is not limited only to Following implementation situations.