CN108283821A - The treatment process and processing system of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene - Google Patents

The treatment process and processing system of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene Download PDF

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Publication number
CN108283821A
CN108283821A CN201810230743.6A CN201810230743A CN108283821A CN 108283821 A CN108283821 A CN 108283821A CN 201810230743 A CN201810230743 A CN 201810230743A CN 108283821 A CN108283821 A CN 108283821A
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China
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exhaust gas
tube body
huachan
treatment
adsorption
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田英强
马红燕
靖英强
赵静
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Hebei Ge Source Environmental Protection Technology Co Ltd
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Hebei Ge Source Environmental Protection Technology Co Ltd
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Priority to CN201810230743.6A priority Critical patent/CN108283821A/en
Publication of CN108283821A publication Critical patent/CN108283821A/en
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    • 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
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/1406Multiple stage absorption
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/1487Removing organic compounds
    • 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
    • B01D53/14Separation 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 absorption
    • B01D53/1493Selection of liquid materials for use as absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10Inorganic absorbents
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/10Inorganic absorbents
    • B01D2252/103Water
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2252/00Absorbents, i.e. solvents and liquid materials for gas absorption
    • B01D2252/20Organic absorbents
    • 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
    • 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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01DSEPARATION
    • B01D2257/00Components to be removed
    • B01D2257/70Organic compounds not provided for in groups B01D2257/00 - B01D2257/602

Abstract

The invention discloses a kind for the treatment of process of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene, the treatment process has condensation process step, the condensation process step carries out in the tube-in-tube condenser equipped with adsorption stuffing chamber, specially pending exhaust gas carries out uniform contact heat-exchanging via the coolant between inside and outside tube body in suction function and tube-in-tube condenser in a manner of reverse flow, and the exhaust gas after cooling is filtered processing through adsorption stuffing chamber again.The treatment process of acquisition, address only influence of the naphthalene contained in exhaust gas to follow-up equipment, avoiding reduces to exhaust treatment efficiency because of naphthalene, a series of reduction treatment effects such as increases frequency of maintenance, makes equipment or corrosive pipeline or blocking, increases the problem of processing cost, and naphthalene can be recycled through purging, effectively increase enterprise's production added value.The processing system of the present invention, simple in structure, equipment investment and operating cost are low, and exhaust treatment efficiency is high, have significant application and popularization value.

Description

The treatment process and processing system of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene
Technical field
The place of the exhaust gas containing naphthalene the present invention relates to technical field of waste gas treatment more particularly to a kind of coking production Zhong Huachan workshop sections Science and engineering skill also relates to the processing system for the treatment process.
Background technology
With the rapid development of the national economy, the demand of steel is continuously increased, and the amount of coke that iron and steel smelting needs Increase therewith.And coke is generated by coking, this allows for coking industry and has obtained quick raising in the status of today's society.Refining Burnt also known as coal high-temperature retorting, is that coal is heated to 1000 DEG C or so in the case where completely cutting off air conditions, is generated by thermal decomposition and coking Coke, coal gas and other chemical products.Wherein, coal gas and other chemical products are all the essential raw materials of industrial production.It is existing It is carried out in coke-oven plant's coking workshop for coking production, coking workshop comprehensively utilizes workshop section by coke workshop section, Hua Chan workshop sections and coal gas It constitutes;Coke workshop section is that coal is processed by standby coal stage, the stage of coalingging, coke pushing stage, quenching stage and sieve burnt stage etc. Journey obtains coke;And Hua Chan workshop sections are then used to carry out purified treatment to the raw gas that coal workshop section generates to obtain purified gas, coke Oily and other chemical products include mainly the processing such as coal gas preliminary purification stage, desulfurization stage, deamination stage, elution benzene stage Process;Coal gas comprehensive utilization workshop section is the process using purified gas production methanol and synthesis ammonia.
Each workshop section in coking workshop will produce exhaust gas in process of production.Wherein, the exhaust gas of Hua Chan workshop sections discharge comes From the tail gas of each production phase, the leakage gas of equipment pipe, air-discharging and the tail gas of gas-fired discharge, while also clean coal The exhaust gas etc. that volatile matter, burning generate.The main component of exhaust gas is inorganic compound and organic compound, and inorganic compound includes Carbon monoxide, sulfur dioxide and nitrogen oxides etc., organic compound include formaldehyde, polycyclic aromatic hydrocarbon, phenol, amine and methacrylaldehyde Deng in addition to this also a small amount of heavy metal, such as cadmium, arsenic, mercury.
Sulfur dioxide is a kind of asphyxiant gas, and colourless, foul smelling, harmfulness is larger, to many organ spinosities of human body Swash property effect, it is mainly big to research and respiratory mucosa harmfulness, if human body sucks excessive sulfur dioxide, may cause serious Disease, and the sulfur dioxide in air is prone to aoxidize anti-generation sulfur trioxide, and sulfur trioxide lands to form acid with rainwater Rain, acid rain are affected to environment and crops.Nitrogen oxides is also a kind of high hazardous substance, and nitrogen oxides can stimulate lung group It knits, if the nitrogen oxides that human body touches high concentration can make central nervous system impaired.The harmfulness of hydrogen sulfide can not despise, It can cause neurotoxic, if human body sucks excessive hydrogen sulfide, will cause mucous membrane it is impaired cause human body items function by To influence.Carbon monoxide is a kind of asphyxiant gas, is more toxic, colourless, tasteless, is not easy to be noticeable, so the possibility of poisoning Property bigger, as the super more 1.2mg/m of CO in Air concentration3When, organism can be caused dead within the shorter time.Phase For above several substances, the toxicity of ammonia be not it is very big, but ammonia be also it is a kind of it is colourless, have the toxic of strong and stimulating smell Gas, if human body sucks excessive ammonia and can stimulate the infection of the upper respiratory tract and Other diseases.Polycyclic aromatic hydrocarbon is a kind of carcinogen, right Human body is very harmful, includes mainly BaP, 3-MECA, naphthalene etc., and the carcinogenicity of wherein BaP is strong, and incubation period is long, long Phase sucking is done great harm to human body;And there is naphthalene stimulation, high-concentration naphthalene can cause hemolytic anemia and liver, renal damage, and naphthalene It can also be deposited on equipment or duct wall and equipment or pipeline are resulted in blockage and corroded.Therefore, if the exhaust gas of Hua Chan workshop sections discharge Without rationally handling with regard to direct emission, environment and human body can be caused seriously to pollute;And also need root when to the waste gas pollution control and treatment It is rationally handled according to exhaust gas properties.
Invention content
To solve the shortcomings of the prior art, the present invention provides a kind of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene Treatment process, the treatment process are in advance removed naphthalene by condensation, according to the characteristic containing naphthalene in exhaust gas to avoid exhaust gas In corrosion and blocking of the naphthalene to equipment effectively increase treatment effect so as to preferably be handled exhaust gas, carry simultaneously The high service life of equipment.
To achieve the above object, the treatment process of coking production Zhong Huachan provided by the invention workshop sections exhaust gas containing naphthalene, has Condensation process step, the condensation process step carries out in the tube-in-tube condenser equipped with adsorption stuffing chamber, including following behaviour Make:
Pending exhaust gas is via the coolant between inside and outside tube body in suction function and tube-in-tube condenser with reverse flow Mode carry out uniform contact heat-exchanging, the exhaust gas after cooling is filtered processing through adsorption stuffing chamber again, waits for tube-in-tube condenser Interior tube body in the filler of condensation solid waste or adsorption stuffing intracavitary accumulated when being cleared up, processing terminates;
The coolant includes one kind in sky gas and water, brine.
The waste gas treatment process of the present invention, the exhaust gas containing naphthalene for being generated to coking production Zhong Huachan workshop sections are efficiently controlled Reason by using coolant in condensation process step, and carries out uniform contact heat-exchanging in the form of reverse flow with exhaust gas, by Naphthalene less than the feature with regard to solidifiable at 80.2 DEG C of fusing point, makes naphthalene in exhaust gas be cooled to 30~40 under coolant effect in exhaust gas DEG C and be solidified as solid so that naphthalene is detached from exhaust gas and reaches removal purpose, avoid in waste gas treatment process because The presence of naphthalene and follow-up equipment or pipeline are caused to corrode and block and reduces to the treatment effect of exhaust gas, increase processing cost etc. Problem;In the treatment process, the naphthalene in exhaust gas can be not only effectively removed, the presence of naphthalene is avoided and influences the follow-up place to exhaust gas Efficiency and effect are managed, and naphthalene can be recycled, enterprise's production added value is effectively increased.
As the restriction to above-mentioned technical proposal, wait for the condensation solid waste accumulated in the interior tube body of tube-in-tube condenser need into When row cleaning, it is blown into interior tube body steam in the form of intermittent carries out purging and complete cleaning operation.
Because naphthalene is far below under boiling temperature, just there is prodigious vapour pressure, so when heated, solid naphthalene can be without Crossing liquid directly becomes naphthalene steam, thus condensed solid naphthalene can be recycled by steam blowing.
As the restriction to above-mentioned technical proposal, which further includes being carried out successively after the condensation process step Absorbing liquid processing step and absorbing agent treatment step.
Absorbing liquid processing step and absorbing agent treatment step are carried out in condensation process step and then successively, it can be effectively right The poisonous and harmful element that can be absorbed by liquid absorption in exhaust gas and the poisonous and harmful element that can be adsorbed by adsorbent are removed, and can be produced Raw synergistic function, significantly improves subsequent processing effect.
As the restriction to above-mentioned technical proposal, the absorption processing step includes oil wash stage, pickling stages, alkali cleaning rank Section and water rinses, the absorbing liquid in the oil wash stage are washing oil, and the absorbing liquid in the pickling stages is dilute sulfuric acid, institute It is sodium hydroxide solution to state the absorbing liquid in alkali stage, and the absorbing liquid of the water rinses is water.
As the restriction to above-mentioned technical proposal, the adsorption treatment step is inhaled using active carbon adsorption, coke granule At least one of attached method.
Activated carbon has flourishing pore structure, energy binding molecule various substances of different sizes, and activated carbon is chemically Matter is stable, energy is acidproof, alkaline-resisting;And coke granule then has the function of coarse, can also be each substance of different sizes and is adsorbed In the gap of coke, and the grain size of coke granule is larger, and impurity is remained in coke granule and penetrated in adsorption treatment Operation, because of the blocking without causing adsorption layer, in addition coke granule also have high mechanical strength, the rate of filtration soon, use week Phase is long, price is low, be easy to get, after use can incineration disposal the advantages that.
Meanwhile the present invention also provides the processing system of coking production Zhong Huachan as described above workshop sections exhaust gas containing naphthalene, packets Condensation process unit is included, the condensation process unit includes the tube-in-tube condenser being connected with wind turbine, described sleeve pipe formula condenser Including tube body and be set to the dismountable end socket in tube body both ends, the tube body is made of the inside and outside tube body being arranged, inside and outside tube body it Between be formed with cavity for flowing coolant;The outer tube body is equipped with coolant inlet and coolant outlet, and coolant Import and coolant outlet are placed in outer tube body both ends;Said inner tube body is equipped with gas vent close to coolant inlet end, close Coolant outlet end is equipped with gas feed;Be provided with several baffle plates in said inner tube body, and in interior tube body with gas vent Junction is equipped with adsorption stuffing chamber, in being equipped with outlet close to gas outlet end on interior tube body, is equipped in close to gas inlet end It is equipped with sealing cover in purge gass import, the outlet and purge gass import.
To make above-mentioned waste gas treatment process preferably carry out, the present invention also provides the exhaust-gas treatment systems that cooperation technique uses System, which can extend residence time of the exhaust gas in interior tube body by the way that several baffle plates are arranged in interior tube body, to make to give up Gas increases production with coolant time of contact, to which the cooling effect to exhaust gas can be improved, so that naphthalene can more fully solidify in exhaust gas For solid, so as to which more fully the naphthalene in exhaust gas is removed;The filler chamber being arranged at waste gas outlet, then can be used for going again Remaining naphthalene in removing exhaust gas, while also can remove fog and impurity in exhaust gas, effectively prevent retaining naphthalene in exhaust gas and to rear Continuous processing equipment causes to corrode and block to influence, to the treatment effeciency of exhaust gas, to not only increase equipment life, and also reduce Equipment investment and operating cost;In addition, by purge gass import and the setting of outlet, it can be to condensed solid in interior tube body Body naphthalene is purged and reaches recycling purpose, and enterprise's production added value is effectively increased.
Further include connecting, being placed under condensation process unit with condensation process unit as the restriction to above-mentioned technical proposal Sequentially connected absorption processing unit and adsorption treatment unit are swum, adsorption treatment unit downstream is connected to cigarette via wind turbine Chimney.
As the restriction to above-mentioned technical proposal, the absorption processing unit include oil scrubber, pickling tower, caustic wash tower and Water scrubber, the oil scrubber, pickling tower, caustic wash tower and water scrubber the order of connection can be become according to the characteristic of pending exhaust gas It changes.
By oil scrubber, pickling tower, caustic wash tower and water scrubber absorption processing can be carried out to variety classes component in exhaust gas, because And the washing effect to exhaust gas can be increased.
As the restriction to above-mentioned technical proposal, the oil scrubber, pickling tower, caustic wash tower and water scrubber have identical knot Structure, including tower body are equipped with the spray liquid storage of spray thrower, packing layer, filter plate and opening inside the tower body successively from top to bottom Case is deposited, the spray liquid storage bin is equipped with the bottom plate being in tilted layout, the support element for firm bottom is had in the bottom plate, And perforation is provided with to the liquid outlet outside tower body, the tower body in the corresponding spray liquid storage bin sidewall bottom in bottom plate inclined surface Outlet is connected via the circulating pump being arranged outside tower body with the spray thrower to be followed so as to be formed between spray liquid storage bin and spray thrower Loop back path.
The bottom plate spray liquid storage bin side wall bottom corresponding with bottom plate inclined surface being in tilted layout by spray liquid storage bin The cooperation of the liquid outlet in portion can be such that the spray liquid in spray liquid storage bin is adequately recycled, and can effectively prevent portion Spray liquid is divided to be stranded in spray liquid storage bin bottom and cause to waste.
As the restriction to above-mentioned technical proposal, the adsorption treatment unit is adsorption box, and the adsorption box includes babinet, The box house is divided into left and right chamber by the partition board arranged vertically, and multilayer is equipped in the left chamber along box height direction Spaced apart adsorption layer, the right chamber inside are vacant;The left chamber is equipped with right chamber bottom and is connected to outside babinet Air inlet pipe, and air inlet pipe be equipped with solenoid valve, two air inlet pipe outside the enclosure pass through three-way connection with absorb processing unit The pipeline of downstream output connects, and is equipped with VOC concentration sensors in pipeline, and the VOC concentration sensors pass through controller It is connect with solenoid valve.
VOC concentration in exhaust gas can in real time be monitored through VOC concentration sensors before exhaust gas enters babinet, to make After condensed, absorption processing can the exhaust gas of qualified discharge be directly emitted into air through right chamber, and make condensed, absorption processing The exhaust gas for being unable to qualified discharge afterwards enters left chamber and carries out after adsorption treatment to being discharged into air again after qualified discharge, therefore avoids Exhaust gas is condensed, after absorption processing can the exhaust gas of qualified discharge continue adsorption treatment and waste time and waste money Source, and can also effectively improve the treatment effeciency to exhaust gas;In addition, left chamber indoor multilayer adsorption layer can effectively improve exhaust gas and absorption The time of contact of layer and contact area, and the utilization rate of adsorption stuffing in adsorption layer also can be improved.
In conclusion technical solution using the present invention, the processing of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene of acquisition Technique not only solves influence of the naphthalene contained in exhaust gas to follow-up equipment, avoid because naphthalene there are due to reduce at exhaust gas Reason efficiency increases frequency of maintenance, makes equipment or corrosive pipeline or blocking etc. and a series of reduce treatment effects, increases processing cost Problem, and condensed solid naphthalene can be recycled through purging, effectively increase enterprise's production added value;It is walked in condensation process Suddenly it and then carries out absorbing processing step and adsorption treatment step successively, it can be effectively to can be had by absorbent absorption in exhaust gas Malicious harmful components and the poisonous and harmful element that can be adsorbed are removed, and to generate synergistic function, are significantly improved to useless The treatment effect of gas.And the processing system of the present invention, simple in structure, equipment investment and operating cost are low, and exhaust treatment efficiency is high, With significant application and popularization value.
Description of the drawings
The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.
Fig. 1 is the structural representation of the processing system of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene described in the embodiment of the present invention Figure;
In figure:1, condenser;2, oil scrubber;3, pickling tower;4, caustic wash tower;5, water scrubber;6, adsorption box;7, wind turbine;8、 Chimney.
Specific implementation mode
Below in conjunction with embodiment, technical scheme of the present invention is clearly and completely described, it is clear that described Embodiment is only a part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field The every other embodiment that those of ordinary skill is obtained without making creative work, belongs to protection of the present invention Range.
The present embodiment is related to a kind for the treatment of process of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene, for in coking production The exhaust gas containing naphthalene that Hua Chan workshop sections generate is efficiently treated through.
A kind of processing system, as shown in Figure 1, including condensation process unit, the condensation process unit includes and 7 phase of wind turbine Tube-in-tube condenser 1 even, described sleeve pipe formula condenser 1 is including tube body and is set to the dismountable end socket in tube body both ends, the pipe Body is made of the inside and outside tube body being arranged, and the cavity for flowing coolant is formed between inside and outside tube body;On the outer tube body Equipped with coolant inlet and coolant outlet, and coolant inlet and coolant outlet are placed in outer tube body both ends;Said inner tube Body is equipped with gas vent close to coolant inlet end, and gas vent is equipped with close to coolant outlet end;It is arranged in said inner tube body There are several baffle plates, and adsorption stuffing chamber is equipped with gas vent junction in interior tube body, goes out in close gas on interior tube body Mouth end is equipped with outlet, and in being equipped with purge gass import close to gas inlet end, the outlet is equipped with in purge gass import Sealing cover.
Further include connecting, being placed under condensation process unit with condensation process unit between condensation process unit and wind turbine 7 Sequentially connected absorption processing unit and adsorption treatment unit are swum, adsorption treatment unit downstream is connected to cigarette via wind turbine 7 Chimney 8, so that up to target exhaust gas through 8 row of chimney after condensed processing unit, absorption processing unit and adsorption treatment cell processing It puts into air.
The absorption processing unit includes sequentially connected oil scrubber 2, pickling tower 3, caustic wash tower 4 and water scrubber 5, so that Exhaust gas after condensed processing unit processes is handled through oil wash, pickling, alkali cleaning and washing successively, to different in exhaust gas Species components are absorbed, and the washing effect to exhaust gas can be effectively improved.And the oil scrubber 2, pickling tower 3, caustic wash tower 4 and water Washing the order of connection of tower 5 can be converted according to the characteristic of pending exhaust gas, to make exhaust gas obtain maximum treatment effect.
The oil scrubber 2, pickling tower 3, caustic wash tower 4 and water scrubber 5 have identical structure, including tower body, the tower body Bottom is equipped with air inlet, and top is equipped with gas outlet;It is equipped with spray thrower, packing layer, filtering inside the tower body successively from top to bottom The spray liquid storage bin of plate and opening, and filter plate and spray liquid storage bin are placed in the both sides up and down of air inlet.Setting filtering Plate can be used to prevent large granular impurity or filler from dropping down onto in spray liquid storage bin and the liquid outlet of spray liquid storage bin is caused to go out It now blocks, to influence the normal operation on absorption tower;In addition, top of the filter plate because being set to air inlet, thus exhaust gas pass through into Gas port can achieve the purpose that uniformly distributed exhaust gas after entering tower body under filter plate effect, to make exhaust gas in the state of being uniformly distributed It is moved to packing layer, so exhaust gas can be made more fully to terminate with spray liquid in packing layer, spray liquid can be effectively improved to useless The absorption efficiency of pollutant in gas;In addition, filter plate can also reduce the flow velocity of exhaust gas, to extend delay of the exhaust gas in packing layer Time, to further increase absorption efficiency of the spray liquid to pollutant in exhaust gas.The filter plate is detachably mounted to tower body It is interior, it so can then facilitate and filter plate is maintained or replaced.The filter plate includes screen and is fixedly installed on screen Strainer.
The spray liquid storage bin is equipped with the bottom plate being in tilted layout, and the support for firm bottom is had in the bottom plate Part, to ensure securely to support spray liquid storage bin.And it is opened in the corresponding spray liquid storage bin sidewall bottom in bottom plate inclined surface Have perforation to the liquid outlet outside tower body, the tower body outlet be connected with the spray thrower via the circulating pump being arranged outside tower body with Make to form circulation loop between spray liquid storage bin and spray thrower.Therefore, pass through the bottom plate and bottom plate of spray liquid storage bin bottom The cooperation of the liquid outlet of the corresponding spray liquid storage bin sidewall bottom in inclined surface, can make the spray liquid in spray liquid storage bin It is adequately recycled, part spray liquid can be effectively prevent to be stranded in spray liquid storage bin bottom and cause to waste.In addition, Pipeline between liquid outlet and circulating pump is equipped with branch pipe, and branch pipe is equipped with valve.The branch pipe can be used for spray liquid without Spray liquid is discharged when absorbability, in addition the branch pipe can be additionally used in the absorbent spray of addition tool into spray liquid storage bin Drench liquid.
The adsorption treatment unit is adsorption box 6, and the adsorption box 6 includes babinet, and the box house by arranging vertically Partition board be divided into left and right chamber, and left chamber is much larger than right chamber, in the left chamber equipped with multilayer between box height direction It is vacant inside the adsorption layer of arrangement, the right chamber.In this way, then left chamber can be used as adsorption chamber to condensed, absorption Treated exhaust gas carries out adsorption treatment, and right chamber can then act on chimney 8 to make it is condensed, absorb that treated can be up to standard The exhaust gas of discharge carries out direct emission.The setting of left chamber indoor multilayer adsorption layer can effectively improve organic exhaust gas and improve exhaust gas and inhale The time of contact of attached layer and contact area, and the utilization rate of adsorption stuffing in adsorption layer also can be improved.The left chamber and right chamber Room bottom is equipped with the air inlet pipe being connected to outside babinet, and air inlet pipe is equipped with solenoid valve, and two air inlet pipe are led to outside the enclosure It crosses three-way connection and is connect with the pipeline for absorbing processing unit downstream output, and VOC concentration sensors are equipped in pipeline, it is described VOC concentration sensors are connect by controller with solenoid valve.In this way, then can by VOC concentration sensors to condensed, absorption at VOC concentration is monitored in real time in exhaust gas after reason, to make after condensed, absorption processing can the exhaust gas of qualified discharge directly pass through Right chamber is emitted into air, and the exhaust gas that qualified discharge is unable to after making condensed, absorption handle enters left chamber and adsorbed To being discharged into air again after qualified discharge after processing, thus avoid exhaust gas is condensed, after absorption processing can qualified discharge it is useless Gas continues adsorption treatment and wastes time and waste of resource, and can also effectively improve the treatment effeciency to exhaust gas.
Embodiment 1.1
The treatment process of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene can be implemented in processing system as described above.It should Treatment process is included in the condensation process step carried out in tube-in-tube condenser, and behaviour is carried out as follows in the condensation process step Make:
It selects air as coolant, and controls the temperature of air within the scope of 15~25 DEG C.Coolant is continually entered Into the cavity between the inside and outside tube body of tube-in-tube condenser, while pending exhaust gas is continually entered via the suction function of wind turbine Into the interior tube body of tube-in-tube condenser, make pending exhaust gas and coolant in tube-in-tube condenser in a manner of reverse flow It carrying out uniform contact heat-exchanging and carries out condensation process, the exhaust gas after cooling is filtered processing through the filler chamber in interior tube body again, When the filler of the condensation solid waste or adsorption stuffing intracavitary accumulated in interior tube body is cleared up, processing terminates.
Exhaust the coolant in cavity between inside and outside tube body, be blown into the form of intermittent into interior tube body later steam with It carries out purge and completes the cleaning to solid waste in interior tube body, and the naphthalene steam purged out is recycled, to be detached It is recycled after purification.
Exhaust gas after above-mentioned condensation process step is input to the oil wash stage absorbed in processing step, acid successively Stage, alkali cleaning stage and water rinses are washed, the absorbent in the oil wash stage is washing oil, the absorption in the pickling stages Agent is dilute sulfuric acid, and the absorbent in the alkali stage is sodium hydroxide solution, and the absorbing liquid of the water rinses is water.Then It is transported in adsorption treatment step and carries out adsorption treatment.Adsorption treatment is using in active carbon adsorption, coke granule absorption method At least one.
Embodiment 1.2
It selects water as coolant, and controls the temperature of water within the scope of 15~25 DEG C.Coolant is continually entered to set In cavity between the inside and outside tube body of trumpet cooler, while pending exhaust gas is continually entered via the suction function of wind turbine to set In the interior tube body of trumpet cooler, pending exhaust gas and coolant is made to be carried out in a manner of reverse flow in tube-in-tube condenser Uniform contact heat-exchanging and carry out condensation process, the exhaust gas after cooling is filtered processing through the filler chamber in interior tube body again, waits for interior When the filler of the condensation solid waste or adsorption stuffing intracavitary accumulated in tube body is cleared up, processing terminates.
Exhaust the coolant in cavity between inside and outside tube body, be blown into the form of intermittent into interior tube body later steam with It carries out purge and completes the cleaning to solid waste in interior tube body, and the naphthalene steam purged out is recycled, to be detached It is recycled after purification.
Exhaust gas after above-mentioned condensation process step is input to the oil wash stage absorbed in processing step, acid successively Stage, alkali cleaning stage and water rinses are washed, the absorbent in the oil wash stage is washing oil, the absorption in the pickling stages Agent is dilute sulfuric acid, and the absorbent in the alkali stage is sodium hydroxide solution, and the absorbing liquid of the water rinses is water.Then It is transported in adsorption treatment step and carries out adsorption treatment.Adsorption treatment is using in active carbon adsorption, coke granule absorption method At least one.
Comparative example
This comparative example is related to using conventional method handling to coking production Zhong Huachan workshop sections exhaust gas containing naphthalene, i.e., first right Exhaust gas containing naphthalene carries out absorption processing through absorption tower, the processing method of gas-liquid separation is carried out through demister after, through the conventional method Treated, and exhaust gas is directly discharged in air.
By the processing method of above-described embodiment and comparative example, to the handling result of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene It see the table below.
The naphthalene rate of recovery The plant maintenance period VOCs handling rates
Embodiment 1.1 80% 3 months 75%
Embodiment 1.2 98% 3 months 99%
Comparative example 50% 1 week 45%
By upper table result as it can be seen that the treatment process of the present invention, carries out condensation process so that naphthalene in exhaust gas to exhaust gas in advance It is removed, avoiding is reducing due to the presence of naphthalene causes corrosion to equipment or pipeline and blocks to useless in waste gas treatment process The frequency of maintenance of the treatment effect of gas, equipment extended to March by usual 1 week, and service life of equipment is extended, and with condensation Absorption processing step and adsorption treatment step after processing step can generate synergistic function, improve the integrated treatment of low exhaust gas Effect has significant advantage.
In conclusion the treatment process of coking production Hua Chan of the present invention workshop sections exhaust gas containing naphthalene, not only solves institute in exhaust gas Influence of the naphthalene contained to follow-up equipment, avoid because naphthalene there are due to reduce to exhaust treatment efficiency, increase frequency of maintenance, make to set A series of reduction treatment effects such as standby or corrosive pipeline or blocking increase the problem of processing cost, and condensed solid naphthalene can It is recycled through purging, effectively increases enterprise's production added value;It carries out at absorption in condensation process step and then successively Step and adsorption treatment step are managed, it can be effectively to can be by poisonous and harmful element that absorbent absorbs and what can be adsorbed have in exhaust gas Malicious harmful components are removed, and to generate synergistic function, significantly improve the treatment effect to exhaust gas.And the place of the present invention Reason system, simple in structure, equipment investment and operating cost are low, and exhaust treatment efficiency is high, have significant application and popularization value.

Claims (10)

1. a kind for the treatment of process of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene, which is characterized in that the treatment process has condensation Processing step, the condensation process step carries out in the tube-in-tube condenser equipped with adsorption stuffing chamber, including following operation:
Pending exhaust gas is via the coolant between inside and outside tube body in suction function and tube-in-tube condenser with the side of reverse flow Formula carries out uniform contact heat-exchanging, and the exhaust gas after cooling is filtered processing through adsorption stuffing chamber again, waits for the interior of tube-in-tube condenser When the filler of the condensation solid waste or adsorption stuffing intracavitary accumulated in tube body is cleared up, processing terminates;
The coolant includes one kind in sky gas and water, brine.
2. the treatment process of coking production Zhong Huachan according to claim 1 workshop sections exhaust gas containing naphthalene, it is characterised in that:It waits covering When the condensation solid waste accumulated in the interior tube body of trumpet cooler is cleared up, steaming is blown into interior tube body in the form of intermittent Vapour carries out purging and completes cleaning operation.
3. the treatment process of coking production Zhong Huachan according to claim 1 workshop sections exhaust gas containing naphthalene, it is characterised in that:At this Science and engineering skill further includes the absorbing liquid processing step carried out successively after the condensation process step and absorbing agent treatment step.
4. the treatment process of coking production Zhong Huachan according to claim 3 workshop sections exhaust gas containing naphthalene, it is characterised in that:It is described It includes oil wash stage, pickling stages, alkali cleaning stage and water rinses, the absorbing liquid in the oil wash stage to absorb processing step For washing oil, the absorbing liquid in the pickling stages is dilute sulfuric acid, and the absorbing liquid in the alkali stage is sodium hydroxide solution, institute The absorbing liquid for stating water rinses is water.
5. the treatment process of coking production Zhong Huachan according to claim 3 workshop sections exhaust gas containing naphthalene, it is characterised in that:It is described Adsorption treatment step is using at least one of active carbon adsorption, coke granule absorption method.
6. a kind of processing system of coking production Zhong Huachan as described in claim 1 workshop sections exhaust gas containing naphthalene, it is characterised in that:Packet Condensation process unit is included, the condensation process unit includes the tube-in-tube condenser being connected with wind turbine, described sleeve pipe formula condenser Including tube body and be set to the dismountable end socket in tube body both ends, the tube body is made of the inside and outside tube body being arranged, inside and outside tube body it Between be formed with cavity for flowing coolant;The outer tube body is equipped with coolant inlet and coolant outlet, and coolant Import and coolant outlet are placed in outer tube body both ends;Said inner tube body is equipped with gas vent close to coolant inlet end, close Coolant outlet end is equipped with gas feed;Be provided with several baffle plates in said inner tube body, and in interior tube body with gas vent Junction is equipped with adsorption stuffing chamber, in being equipped with outlet close to gas outlet end on interior tube body, is equipped in close to gas inlet end It is equipped with sealing cover in purge gass import, the outlet and purge gass import.
7. the processing system of coking production Zhong Huachan according to claim 6 workshop sections exhaust gas containing naphthalene, it is characterised in that:Also wrap It includes and connects with condensation process unit, is placed in the sequentially connected absorption processing unit in condensation process unit downstream and adsorption treatment list Member, adsorption treatment unit downstream are connected to chimney via wind turbine.
8. the processing system of coking production Zhong Huachan according to claim 7 workshop sections exhaust gas containing naphthalene, it is characterised in that:It is described It includes oil scrubber, pickling tower, caustic wash tower and water scrubber, the oil scrubber, pickling tower, caustic wash tower and washing to absorb processing unit The order of connection of tower can be converted according to the characteristic of pending exhaust gas.
9. the processing system of coking production Zhong Huachan according to claim 8 workshop sections exhaust gas containing naphthalene, it is characterised in that:It is described Oil scrubber, pickling tower, caustic wash tower and water scrubber have identical structure, including tower body, are set successively from top to bottom inside the tower body There are the spray liquid storage bin of spray thrower, packing layer, filter plate and opening, the spray liquid storage bin to be equipped with the bottom being in tilted layout Plate has the support element for firm bottom in the bottom plate, and in bottom plate inclined surface corresponding spray liquid storage bin side Wall bottom is provided with perforation to the liquid outlet outside tower body, and the tower body outlet is via the circulating pump being arranged outside tower body and the spray Device is connected so as to form circulation loop between spray liquid storage bin and spray thrower.
10. the processing system of coking production Zhong Huachan according to claim 7 workshop sections exhaust gas containing naphthalene, it is characterised in that:Institute It is adsorption box to state adsorption treatment unit, and the adsorption box includes babinet, the box house by the partition board arranged vertically be divided into it is left, It is vacant inside the spaced apart adsorption layer in box height direction, the right chamber to be equipped with multilayer in the left chamber for right chamber; The left chamber is equipped with the air inlet pipe being connected to outside babinet with right chamber bottom, and air inlet pipe is equipped with solenoid valve, described in two Air inlet pipe is connect by three-way connection with the pipeline for absorbing processing unit downstream output outside the enclosure, and is equipped in pipeline VOC concentration sensors, the VOC concentration sensors are connect by controller with solenoid valve.
CN201810230743.6A 2018-03-20 2018-03-20 The treatment process and processing system of coking production Zhong Huachan workshop sections exhaust gas containing naphthalene Pending CN108283821A (en)

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CN109589693A (en) * 2018-12-06 2019-04-09 江西省药明扬海医药科技有限公司 A kind of tail gas clean-up deodorizing methods generated in fermentation cordyceps production process
CN109663455A (en) * 2018-12-18 2019-04-23 宁夏宝塔化工中心实验室(有限公司) A kind of device handling tar flue gas raw material
CN110180351A (en) * 2019-05-09 2019-08-30 优赛环保工程(天津)有限公司 Coke-oven plant's sulphur ammonium, desulfurization, salt extraction workshop section emission-control equipment and its processing method
CN111822473A (en) * 2019-04-23 2020-10-27 宝武炭材料科技有限公司 Coke pit waste gas collecting and purifying system

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN109589693A (en) * 2018-12-06 2019-04-09 江西省药明扬海医药科技有限公司 A kind of tail gas clean-up deodorizing methods generated in fermentation cordyceps production process
CN109663455A (en) * 2018-12-18 2019-04-23 宁夏宝塔化工中心实验室(有限公司) A kind of device handling tar flue gas raw material
CN111822473A (en) * 2019-04-23 2020-10-27 宝武炭材料科技有限公司 Coke pit waste gas collecting and purifying system
CN110180351A (en) * 2019-05-09 2019-08-30 优赛环保工程(天津)有限公司 Coke-oven plant's sulphur ammonium, desulfurization, salt extraction workshop section emission-control equipment and its processing method

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