CN105834204A - Soil mercury removing system - Google Patents

Soil mercury removing system Download PDF

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Publication number
CN105834204A
CN105834204A CN201610310318.9A CN201610310318A CN105834204A CN 105834204 A CN105834204 A CN 105834204A CN 201610310318 A CN201610310318 A CN 201610310318A CN 105834204 A CN105834204 A CN 105834204A
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CN
China
Prior art keywords
soil
rotary furnace
feed
dust
mercury
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CN201610310318.9A
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Chinese (zh)
Inventor
瞿丽雅
张军方
申哲民
余志�
董泽琴
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贵州省环境科学研究设计院
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Priority to CN201610310318.9A priority Critical patent/CN105834204A/en
Publication of CN105834204A publication Critical patent/CN105834204A/en

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Classifications

    • BPERFORMING OPERATIONS; TRANSPORTING
    • B09DISPOSAL OF SOLID WASTE; RECLAMATION OF CONTAMINATED SOIL
    • B09CRECLAMATION OF CONTAMINATED SOIL
    • B09C1/00Reclamation of contaminated soil
    • B09C1/06Reclamation of contaminated soil thermally
    • B09C1/065Reclamation of contaminated soil thermally by pyrolysis
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/023Pockets filters, i.e. multiple bag filters mounted on a common frame
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D46/00Filters, i.e. particle separators or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/04Cleaning filters
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/002Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by condensation
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D53/00Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
    • B01D53/02Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography
    • B01D53/04Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols by adsorption, e.g. preparative gas chromatography with stationary adsorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2253/00Adsorbents used in seperation treatment of gases and vapours
    • B01D2253/10Inorganic adsorbents
    • B01D2253/102Carbon

Abstract

The invention provides a soil mercury removing system which comprises a rotary furnace, a dust removing device, a mercury-containing waste gas cooling device and an activated carbon adsorption device. The rotary furnace, the dust removing device, the mercury-containing waste gas cooling device and the activated carbon adsorption device are arranged in sequence. The feeding end of the rotary furnace is provided with a feeding system and a preheating chamber. A rotary feeding pipeline of the rotary furnace penetrates through the preheating chamber and communicates with the discharging end of a feeding pipeline of the feeding system. The preheating chamber communicates with the rotary furnace through a heat conduction pipeline. The rotary furnace, the dust removing device, the mercury-containing waste gas cooling device and the activated carbon adsorption device sequentially communicate with one another through air guide pipelines. An induced draught fan is arranged at the air outlet end of the activated carbon adsorption device. An exhaust pipe is further led out of the preheating chamber. An induced draught fan is further arranged on the exhaust pipe. The soil mercury removing system is used for solving the problems that currently, soil mercury pollution is serious, great potential health safety hazards exist, however, damage to soil is large due to an existing low-temperature pyrolysis treatment manner, the soil tillable property after mercury removing is greatly affected, and the existing low-temperature pyrolysis treatment manner is not suitable for soil mercury removing in a farming area. The soil mercury removing system belongs to the field of soil mercury pollution abatement.

Description

A kind of soil demercuration system

Technical field

The present invention relates to a kind of soil demercuration system, belong to mercury contaminated soil repairing and treating field.

Background technology

The physical property unique due to hydrargyrum and toxicity so that it is be widely used in industry and agricultural, but environment is caused severe contamination by the unprocessed mercurous refuse with regard to outer row in the past.The use of the dried wet deposition of Mercury In The Air, sewage irrigation, mud fertilising and the accumulation of mercurous solid waste, organomercury pesticide and mercurous chemical fertilizer is all the main artificial source that hydrargyrum enters soil environment.Owing to these polluter are a contact scar source mostly, therefore it is uneven pollution for soil environment, may be the most serious at some areas Soil Mercury Pollution.

From phase early 1960s, Japan has found since " minamata disease ", the whole world harm pay attention to day by day to mercury pollution, and starts the upsurge of mercury pollution research.Hg can enter soil environment by different approaches, through complicated physics, chemical reaction, major part is trapped in soil with various forms, cause the pollution of surface water and groundwater, simultaneously, hydrargyrum can also enter food chain by crop edible part, and gradually accumulates, thus finally constitutes a threat to health.The cultivated area that China is polluted by Hg has 3.2 × 104hm2, annual " the hydrargyrum rice " produced reaches 1.9 × 108Kg, therefore the improvement to Soil Mercury Pollution is extremely urgent with reparation.

In recent years, domestic the most little to the research in terms of pyrolysismethod reparation mercury contaminated soil.Abroad, U.S. Environmental Protection Agency (EPA) has selected pyrolysismethod to repair points of contamination at more than 59, but U.S. Environmental Protection Agency (EPA) is mainly the organic polluted soils such as pyrolysismethod is applied to reparation oil, and pyrolysismethod is the most successfully used for repairing hydrargyrum heavily contaminated soil in the chlor-alkali plant of the Taibei by the T.C Chang in Taiwan.But T.C Chang is because process is place rather than farmland, the farming of soil after not considering to repair, after its reparation, the farming to soil destroys greatly, is not suitable for the agro-farming Soils In The Region removal of mercury.

Summary of the invention

It is an object of the invention to: a kind of soil demercuration system is provided, serious to solve current Soil Mercury Pollution, there is very big healthy and safe hidden danger, and existing pyrolysis method for removing hydrargyrum is bigger to the destruction of soil, greatly have impact on the soil farming after the removal of mercury, the problem not being suitable for the agro-farming Soils In The Region removal of mercury.

For solving the problems referred to above, intend using such a soil demercuration system, including the rotary furnace set gradually, dust arrester, mercurous exhaust gas cooling device and absorbent charcoal adsorber, the feed end of rotary furnace is provided with feed system and preheating chamber, the revolution feed pipe of rotary furnace is connected through preheating chamber the discharge end with the feed pipe of feed system, preheating chamber is connected by thermal conductive pipe with rotary furnace, rotary furnace, dust arrester, mercurous exhaust gas cooling device all passes sequentially through guide pipeline and is connected with absorbent charcoal adsorber, the outlet side of absorbent charcoal adsorber is provided with air-introduced machine, exhaustor is also led in preheating chamber, air-introduced machine it is also equipped with on exhaustor.

It is additionally provided with at the feed end of revolution feed pipe and turns round the soil recovery cell body that feed pipe is connected, it is to extend the pyramidal structure below revolution feed pipe that soil reclaims the lower end of cell body, and soil to reclaim the bottom of cell body be can opening type structure, soil reclaims and leads to air inlet pipe on cell body, and air inlet pipe is provided with ball valve and air velocity transducer;

Also including packed tower, in packed tower, stacking is filled with Pall ring, and the specification of described Pall ring is, diameter 38mm, high 38mm;

Described feed pipe is auger feed pipe, described feed system also includes feed hopper, belt feeder and the driving motor of driving auger feed pipe feeding, feed hopper is arranged at the upper end charging aperture of feed pipe, one end of belt feeder extends at the upper endfeed of feed hopper, belt feeder feed end belt be provided above hopper, hopper is wide at the top and narrow at the bottom and bottom opening, and towards being unenclosed construction on the downside of the side plate of belt feeder conveying direction side on hopper, it is provided with rigid plastics block between bottom and the belt feeder feed end belt of hopper.

Rotary furnace is also correspondingly arranged on feeder, feeder includes liquid gas storage tank and carburator, the liquid-phase outlet of liquid gas storage tank is connected with the air inlet of carburator by airway, the outlet side of carburator leads to supply supervisor, lead to multiple gas manifold on supply supervisor and be respectively rotary furnace supply, and gas manifold is along the length direction distribution setting of rotary furnace, each gas manifold is provided with control valve, described supply supervisor is additionally provided with air gauge.

Also include unloader and soil accumulator tank, unloader include drive motor, discharging impeller and for for drive electric motor temperature reduction cool down cold water pipe, the downside of the discharge end of rotary furnace is pyramidal structure, discharging impeller is transversely correspondingly arranged at the bottom discharge mouth of the discharge end of rotary furnace, and soil accumulator tank is arranged at the lower section of discharging impeller.

The lower end air inlet of dust arrester is drawn and extended to guide pipeline between rotary furnace and dust arrester by the upper end of the discharge end of rotary furnace, and the upper part of this section of guide pipeline is domes.

Described dust arrester is bag-type dust machine, include dust-removal cloth-bag, dust arrester is enclosed construction, the lower end of dust-removal cloth-bag is provided with drawer type ash-clearing structure, dust arrester is also correspondingly arranged on dust blowing system, is additionally provided with the heater for heating for gas in pipelines at the charging aperture of dust arrester.

Dust blowing system includes air compressor and impulse controller, air compressor is correspondingly arranged on air accumulator, multiple gas blow pipe is led on air accumulator, it is provided with electromagnetic valve on each gas blow pipe, and gas blow pipe all extends the top of dust-removal cloth-bag in dust arrester, being provided with multiple inflatable mouth on each gas blow pipe, and the upper end open one_to_one corresponding of the inflatable mouth on gas blow pipe and dust-removal cloth-bag is arranged, described electromagnetic valve is all connected with impulse controller.

It is provided with temperature sensor and pressure detecting part on every section of guide pipeline, exhaustor is also equipped with temperature sensor, air-introduced machine place pipeline is provided with air velocity transducer, and air-introduced machine is frequency conversion fan.

Compared with prior art, major advantage is as follows for the present invention:

1. this system utilizes rotary furnace to realize the desorption of hydrargyrum in soil, being more uniformly distributed, fully of soil heating everywhere can be made, in making soil, hydrargyrum therefrom separates the most thorough, in rotary furnace front end, preheating chamber is set, soil is dried by waste heat in advance that can make full use of in rotary furnace, ensure follow-up rotary furnace demercuration effect, improve the hot service efficiency of rotary furnace;

2. the agricultural land soil of high concentration mercury pollution can be repaired by native system by Low Temperature Thermal solution, this separate mode saves the energy, and soil physico-chemical property and natural fertility are destroyed less after processing, soil is backfilled after treatment and recovers agricultural production to be possibly realized, the efficiency that this technology is mainly characterized by the removal of mercury is high, time is short, do not destroy the farming after soil remediation, it is high that this method is particularly suited for mercury content, soil is soft, the soil that particularly volatile mercury such as element mercury or methyl mercury compounds content is high.Soils In The Region mercury contaminated for Qingzhen County, guizhou Province, china, mercury content is high, and the situation that agricultural soil is nervous, and Low Temperature Thermal solution is undoubtedly a kind of worth research and the restorative procedure of great feasibility;

3. the method is added without catalyst, it is to avoid soil is caused secondary pollution;

4. discharge end arranges unloader, it is simple to trapping, it is simple to control the intake in burner hearth, it is ensured that internal negative pressure;

5. pipeline upper end hogback shape, alleviates the accumulation of dust on pipeline, and can remove the sedimentating dust on pipeline easily;

The most each stage is both provided with temperature sensor and the equipment of detection pressure, it is simple to control system temperature and pressure, it is ensured that being smoothed out of security of system and demercuration comprehensively;

7. it is provided with mercurous exhaust gas cooling device and packed tower, mercurous exhaust gas cooling device can remove a part of hydrargyrum, be effectively dehydrated before the activated carbon adsorption removal of mercury meanwhile, it is to avoid consequent activities charcoal absorption mercury vapour is impacted by aqueous vapor, it is ensured that mercurous waste gas qualified discharge.

Accompanying drawing explanation

Fig. 1 is the plan structure schematic diagram that system of the present invention is overall;

Fig. 2 is the main TV structure schematic diagram of the discharge end of rotary furnace in the present invention, dust arrester, mercurous exhaust gas cooling device, packed tower and absorbent charcoal adsorber part;

Fig. 3 is the plan structure schematic diagram of dust arrester and dust blowing system part;

Fig. 4 is the main TV structure schematic diagram of feed system part;

Fig. 5 is the main TV structure schematic diagram of packed tower;

Fig. 6 is the main TV structure schematic diagram of mercurous exhaust gas cooling device;

Fig. 7 is removal of mercury casing side door when opening, the main TV structure schematic diagram of absorbent charcoal adsorber.

Detailed description of the invention

For making the object, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below with reference to accompanying drawings,

Embodiment:

With reference to Fig. 1, Fig. 2 and Fig. 3, the present embodiment provides a kind of soil demercuration system, including the rotary furnace 1 set gradually, dust arrester 2, mercurous exhaust gas cooling device 3 and absorbent charcoal adsorber 4;

nullRotary furnace 1 is also correspondingly arranged on feeder 12,Feeder 12 includes liquid gas storage tank 12-1 and carburator 12-2,The liquid-phase outlet of liquid gas storage tank 12-1 is connected by the air inlet of airway 12-3 and carburator 12-2,The outlet side of carburator 12-2 leads to supply supervisor 13,Lead to multiple gas manifold 14 respectively rotary furnace 1 on supply supervisor 13 supply,And gas manifold 14 is along the length direction distribution setting of rotary furnace 1,It is provided with control valve 15 on each gas manifold 14,It is additionally provided with air gauge 16 on described supply supervisor 13,The feed end of rotary furnace 1 is provided with feed system 5 and preheating chamber 6,The revolution feed pipe 1-1 of rotary furnace 1 is connected through preheating chamber 6 discharge end with the feed pipe 5-1 of feed system 5,Preheating chamber 6 is connected by thermal conductive pipe 7 with rotary furnace 1,Rotary furnace 1、Dust arrester 2、Mercurous exhaust gas cooling device 3 all passes sequentially through guide pipeline 9 with absorbent charcoal adsorber 4 and is connected,The outlet side of absorbent charcoal adsorber 4 is provided with air-introduced machine 10,Exhaustor 6-1 is also led in preheating chamber 6,Air-introduced machine 10 it is also equipped with on exhaustor 6-1,Also include unloader 8 and soil accumulator tank 21,Unloader 8 includes driving motor 8-1、Discharging impeller 8-2 and for for drive motor 8-1 cooling down cold water pipe 8-3,The downside of the discharge end 1-2 of rotary furnace 1 is pyramidal structure,At the bottom discharge mouth of the discharge end 1-2 that discharging impeller 8-2 is transversely correspondingly arranged in rotary furnace 1,Soil accumulator tank 21 is arranged at the lower section of discharging impeller 8-2,Temperature sensor 18 and pressure detecting part 19 it is provided with on every section of guide pipeline 9,Temperature sensor 18 it is also equipped with on exhaustor 6-1,It is also equipped with air velocity transducer 24 on the pipeline of air-introduced machine 10 place,And air-introduced machine 10 is frequency conversion fan.

With reference to Fig. 5, also include packed tower 20, packed tower 20 includes casing 201, downside or the bottom of casing 1 are provided with air inlet, the top of casing 201 is provided with gas outlet, supporting network 202 it is horizontally arranged with in casing 201, it is filled with Pall ring 203 between the gas outlet at supporting network 202 and casing 201 top, offering on the sidewall of casing 201 can the side door 204 of opening type, side door 204 can opening type door body be that transparent material is made, the bottom of casing 201 offers outlet pipe 205, valve 206 it is provided with on outlet pipe 205, the specification of described Pall ring 203 is, diameter 38mm, high 38mm;

nullWith reference to Fig. 4,Described feed pipe 5-1 is auger feed pipe,Described feed system 5 also includes feed hopper 5-2、Belt feeder 5-3 and the driving motor 5-4 of driving auger feed pipe feeding,Feed hopper 5-2 is arranged at the upper end charging aperture of feed pipe 5-1,One end of belt feeder 5-3 extends at the upper endfeed of feed hopper 5-2,Belt feeder 5-3 feed end belt be provided above hopper 5-5,Hopper 5-5 is wide at the top and narrow at the bottom and bottom opening,And towards being unenclosed construction on the downside of the side plate of belt feeder 5-3 conveying direction side on hopper 5-5,It is provided with rigid plastics block between bottom and the belt feeder 5-3 feed end belt of hopper 5-5,It is additionally provided with at the feed end of revolution feed pipe 1-1 and turns round the soil recovery cell body 25 that feed pipe 1-1 is connected,It is to extend the pyramidal structure below revolution feed pipe 1-1 that soil reclaims the lower end of cell body 25,And the bottom of soil recovery cell body 25 is can opening type structure,Soil reclaims and leads to air inlet pipe 22 on cell body 25,Ball 5-2 valve 23 and air velocity transducer 24 it is provided with in air inlet pipe 22;

nullWith reference to Fig. 3,The lower end air inlet of dust arrester 2 is drawn and extended to guide pipeline 9 between rotary furnace 1 and dust arrester 2 by the upper end of the discharge end 1-2 of rotary furnace 1,And the upper part of this section of guide pipeline 9 is domes,Described dust arrester 2 is bag-type dust machine,Include dust-removal cloth-bag 2-1,Dust arrester 2 is enclosed construction,The lower end of dust-removal cloth-bag 2-1 is provided with drawer type ash-clearing structure 2-2,Dust arrester 2 is also correspondingly arranged on dust blowing system 17,The heater 2 for heating it is additionally provided with for gas in pipelines at the charging aperture of dust arrester 2,Dust blowing system 17 includes air compressor 17-1 and impulse controller 17-2,Air compressor 17-1 is correspondingly arranged on air accumulator 17-3,Multiple gas blow pipe 17-4 is led on air accumulator 17-3,It is provided with electromagnetic valve 17-5 on each gas blow pipe 17-4,And gas blow pipe 17-4 all extends the top of dust-removal cloth-bag 2-1 in dust arrester 2,Multiple inflatable mouth 17-6 it is provided with on each gas blow pipe 17-4,And the upper end open one_to_one corresponding of the inflatable mouth 17-6 on gas blow pipe 17-4 and dust-removal cloth-bag 2-1 is arranged,Described electromagnetic valve 17-5 is all connected with impulse controller 17-2.

nullSee Fig. 6,Mercurous exhaust gas cooling device 3 includes condensing casing 31,The side of condensation casing 31 is provided with condensation casing air inlet 311,The opposite side of condensation casing 31 on the other side is provided with condensation casing gas outlet 312,It is additionally provided with three in condensation casing 31 between condensation casing air inlet 311 and condensation casing gas outlet 312 and circulates the baffle plate 313 of distance to condensing casing gas outlet 312 by condensing casing air inlet 311 for increasing gas,Described baffle plate 313 is all perpendicular with the airintake direction of condensation casing air inlet 311,Three baffle plates 313 are the most vertically crisscross arranged,In arbitrary neighborhood two baffle plate 313,The bottom of casing 31 is fixed in the lower end of one of them baffle plate 313,The top of condensation casing 31 is fixed in the upper end of another baffle plate 313,And two baffle plate 313 height sum more than condensation casing 31 cavity heights,Baffle plate 313 is provided with condensing water conduit 314 on the side of condensation casing air inlet 311,Condensing water conduit 314 is arranged on baffle plate 313 along snakelike arrangement.

See Fig. 7, absorbent charcoal adsorber 4 includes removal of mercury casing 41, the downside of removal of mercury casing 41 or bottom are provided with removal of mercury casing air inlet 42, the top of removal of mercury casing 41 is provided with removal of mercury casing gas outlet 43, removal of mercury casing side door 411 is had on removal of mercury casing 41, three drawer-type structures 412 that can skid off it are provided with along the direction of removal of mercury casing side door 411 in removal of mercury casing 41, three drawer-type structures 412 are vertically uniformly distributed setting, activated carbon 413 it is filled with in drawer-type structure 412, the bottom of drawer-type structure 412 is network structure, and between the inwall of drawer-type structure 412 and removal of mercury casing 41, it is provided with sealing joint strip 414.

Claims (9)

  1. null1. a soil demercuration system,It is characterized in that: include the rotary furnace (1) set gradually、Dust arrester (2)、Mercurous exhaust gas cooling device (3) and absorbent charcoal adsorber (4),The feed end of rotary furnace (1) is provided with feed system (5) and preheating chamber (6),The revolution feed pipe (1-1) of rotary furnace (1) is connected through preheating chamber (6) the discharge end with the feed pipe (5-1) of feed system (5),Preheating chamber (6) is connected by thermal conductive pipe (7) with rotary furnace (1),Rotary furnace (1)、Dust arrester (2)、Mercurous exhaust gas cooling device (3) all passes sequentially through guide pipeline (9) with absorbent charcoal adsorber (4) and is connected,The outlet side of absorbent charcoal adsorber (4) is provided with air-introduced machine (10),Exhaustor (6-1) is also led in preheating chamber (6),Air-introduced machine (10) it is also equipped with on exhaustor (6-1).
  2. A kind of soil demercuration system, it is characterized in that: be additionally provided with at the feed end of revolution feed pipe (1-1) and turn round soil recovery cell body (25) that feed pipe (1-1) is connected, it is the pyramidal structure extending revolution feed pipe (1-1) lower section that soil reclaims the lower end of cell body (25), and soil to reclaim the bottom of cell body (25) be can opening type structure, soil reclaims and leads to air inlet pipe (22) on cell body (25), and air inlet pipe (22) is provided with ball valve (23) and air velocity transducer (24).
  3. A kind of soil demercuration system, it is characterized in that: described feed pipe (5-1) is auger feed pipe, described feed system (5) also includes feed hopper (5-2), belt feeder (5-3) and the driving motor (5-4) of driving auger feed pipe feeding, feed hopper (5-2) is arranged at the upper end charging aperture of feed pipe (5-1), one end of belt feeder (5-3) extends at the upper endfeed of feed hopper (5-2), belt feeder (5-3) feed end belt be provided above hopper (5-5), hopper (5-5) is wide at the top and narrow at the bottom and bottom opening, and towards being unenclosed construction on the downside of the side plate of belt feeder (5-3) conveying direction side on hopper (5-5).
  4. A kind of soil demercuration system, it is characterized in that: rotary furnace (1) is also correspondingly arranged on feeder (12), feeder (12) includes liquid gas storage tank (12-1) and carburator (12-2), the liquid-phase outlet of liquid gas storage tank (12-1) is connected with the air inlet of carburator (12-2) by airway (12-3), the outlet side of carburator (12-2) leads to supply supervisor (13), lead to multiple gas manifold (14) on supply supervisor (13) and be respectively rotary furnace (1) supply, and gas manifold (14) is along the length direction distribution setting of rotary furnace (1), control valve (15) it is provided with on each gas manifold (14), it is additionally provided with air gauge (16) on described supply supervisor (13).
  5. A kind of soil demercuration system, it is characterized in that: also include unloader (8) and soil accumulator tank (21), unloader (8) includes driving motor (8-1), discharging impeller (8-2) and being used for the cold water pipe (8-3) for driving motor (8-1) cooling down, the downside of the discharge end (1-2) of rotary furnace (1) is pyramidal structure, discharging impeller (8-2) is transversely correspondingly arranged at the bottom discharge mouth of discharge end (1-2) of rotary furnace (1), and soil accumulator tank (21) is arranged at the lower section of discharging impeller (8-2).
  6. A kind of soil demercuration system, it is characterized in that: the lower end air inlet of dust arrester (2) is drawn and extended to the guide pipeline (9) between rotary furnace (1) and dust arrester (2) by the upper end of the discharge end (1-2) of rotary furnace (1), and the upper part of this section of guide pipeline (9) is domes.
  7. A kind of soil demercuration system, it is characterized in that: described dust arrester (2) is bag-type dust machine, include dust-removal cloth-bag (2-1), dust arrester (2) is enclosed construction, the lower end of dust-removal cloth-bag (2-1) is provided with drawer type ash-clearing structure (2-2), dust arrester (2) is also correspondingly arranged on dust blowing system (17), is additionally provided with the heater (27) for heating for gas in pipelines at the charging aperture of dust arrester (2).
  8. nullA kind of soil demercuration system,It is characterized in that: dust blowing system (17) includes air compressor (17-1) and impulse controller (17-2),Air compressor (17-1) is correspondingly arranged on air accumulator (17-3),Multiple gas blow pipe (17-4) is led on air accumulator (17-3),Electromagnetic valve (17-5) it is provided with on each gas blow pipe (17-4),And gas blow pipe (17-4) all extends the top of dust-removal cloth-bag (2-1) in dust arrester (2),Multiple inflatable mouth (17-6) it is provided with on each gas blow pipe (17-4),And the upper end open one_to_one corresponding of the inflatable mouth (17-6) on gas blow pipe (17-4) and dust-removal cloth-bag (2-1) is arranged,Described electromagnetic valve (17-5) is all connected with impulse controller (17-2).
  9. A kind of soil demercuration system, it is characterized in that: on every section of guide pipeline (9), be provided with temperature sensor (18) and pressure detecting part (19), temperature sensor (18) it is also equipped with on exhaustor (6-1), it is provided with air velocity transducer (24) on the pipeline of air-introduced machine (10) place, and air-introduced machine (10) is frequency conversion fan.
CN201610310318.9A 2016-05-12 2016-05-12 Soil mercury removing system CN105834204A (en)

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