CN109603700A - Utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and device - Google Patents
Utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and device Download PDFInfo
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- CN109603700A CN109603700A CN201811427989.9A CN201811427989A CN109603700A CN 109603700 A CN109603700 A CN 109603700A CN 201811427989 A CN201811427989 A CN 201811427989A CN 109603700 A CN109603700 A CN 109603700A
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/14—Separation 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
- B01D53/1406—Multiple stage absorption
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D53/00—Separation 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
- B01D53/14—Separation 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
- B01D53/18—Absorbing units; Liquid distributors therefor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0006—Controlling or regulating processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J19/00—Chemical, physical or physico-chemical processes in general; Their relevant apparatus
- B01J19/0053—Details of the reactor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01D2258/00—Sources of waste gases
- B01D2258/02—Other waste gases
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Abstract
Calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and device are utilized the invention discloses a kind of, carbide slag and Waste Sulfuric Acid are respectively fed into spent acid carbide slag mixing reactor, entire reaction process carries out in the closed state, the solid material that reaction generates is discharged by the bottom discharge device of spent acid carbide slag mixing reactor, the gas generated is reacted to be discharged by the top of spent acid carbide slag mixing reactor, and it is sent by top suction opening to scrubbing tower alkali liquid washing, tail gas high point emptying after peace and quiet, cleaning solution drains into sewage treatment, the heat released in reaction process is taken away by the cooling medium in the cooling structure of spent acid carbide slag mixing reactor, keep the reaction temperature in spent acid carbide slag mixing reactor in a certain range.Waste Sulfuric Acid is reacted the gypsum of production water supply mud with carbide slag using neutralisation and is blended into the cement for being used to produce qualification in excessive carbide slag by the present invention for that can generate a large amount of alkaline scrap material during calcium carbide legal system acetylene.
Description
Technical field
The invention belongs to chemical technology field, in particular to it is a kind of using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and
Device.
Background technique
In carbide acetylene device, industrial water consumption can be greatly reduced using the peace and quiet substitution sodium hypochlorite of the concentrated sulfuric acid is peace and quiet
And wastewater discharge, but to contain hydro carbons carbide, sulphur simple substance, sulfurous acid, sulfuric acid and phosphoric acid etc. a variety of miscellaneous for the Waste Sulfuric Acid generated
Matter is in black grume, and the pungent tart flavour of band gives out a foul smell, seriously affects environment, causes extreme difficulties to transporting and utilizing.Enterprise
These Waste Sulfuric Acids must be sent to the qualified hazardous waste center of tool and are disposed by industry, and about 500 yuan of disposal costs per ton, whole year needs
Millions of first processing costs are paid, this brings biggish economic financial burden to enterprise；And more with government's environmental protection supervision
Strictly, it is restricted by limited improved with disposal costs of hazardous waste center disposing capacity, apparatus for producing ethyne high load capacity long-term operation
It is severely impacted.Therefore, it selects suitable technology processing acetylene by-product Waste Sulfuric Acid to become enterprise and solves environmental issue
Important topic.
At present there are mainly five types of the processing techniques of industrial waste sulfuric acid: high-temperature cracking method, concentration method, chemical oxidation, extraction with
And neutralisation.
High-temperature cracking method: the method is that Waste Sulfuric Acid is cracked into sulfur dioxide gas at high temperature, and sulfur dioxide obtained is cold
But it is catalytically converted into sulfur trioxide through catalyst afterwards, is then absorbed with the concentrated sulfuric acid, generate oleum, then diluted with dilute sulfuric acid
At the technique of 98% concentrated sulfuric acid.This method is the method for most cleaning, most thorough processing Waste Sulfuric Acid, but investment is big, energy consumption is higher, mostly
Number process units is difficult to receive.
Concentration method: the method is the dilute Waste Sulfuric Acid of heating, and the inorganic contaminants in spent acid are precipitated in crystallization, and organic impurities then occur
The reactions such as oxidation, polymerization are changed into dark gum or suspended matter, then are removed by filtration these impurity.The method is to equipment material
Matter requires height, and steam, water, the electric consumption are big, and operating cost is high；It is complicated for operation, maintenance difficult and costly；Waste Sulfuric Acid treating capacity
Small, evaporation tubes easily block, and run less stable.
Chemical oxidation: using oxidant by the organic impurities oxygenolysis in Waste Sulfuric Acid at carbon dioxide, water and nitrogen oxidation
Object, and then Recovery Purifying Waste Sulfuric Acid.But the method is inefficient, at high cost, needs to be used in combination with other techniques.
Extraction: it selects suitable organic solvent as extractant, makes impurity after organic solvent and Waste Sulfuric Acid come into full contact with
The sulfuric acid for being transferred in solvent, and then being purified.The method simple equipments, atmospheric operation, extractant recyclable regenerative, to setting
It is standby corrosion-free, but difficulty finds suitable extractant, and operating cost is higher, and domestic industry application case is less.
Neutralisation: acid-base neutralization principle is utilized, Waste Sulfuric Acid is neutralized with antalkalis such as lime.The method
Equipment investment is few, easy to operate, cost is relatively low, with extensive in actual production.
Summary of the invention
It is an object of the invention to: in view of the above problems, provides one kind and be applied in drying acetylene production, benefit
With the technique and device of carbide slag processing acetylene cleaning Waste Sulfuric Acid.
The technical scheme of the present invention is realized as follows: using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, feature
It is: carbide slag and Waste Sulfuric Acid is respectively fed into spent acid carbide slag mixing reactor, entire reaction process is in closed state
Lower progress, the solid material for reacting generation are discharged by the bottom discharge device of spent acid carbide slag mixing reactor, and reaction generates
Gas be discharged by the top of spent acid carbide slag mixing reactor, and sent by top suction opening to scrubbing tower alkali liquid washing,
Tail gas high point emptying after peace and quiet, cleaning solution drain into sewage treatment, and the heat released in reaction process is mixed by spent acid carbide slag
Cooling medium in the cooling structure of reactor is taken away, and the reaction temperature in spent acid carbide slag mixing reactor is made to be maintained at certain
In range.
It is of the present invention to utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, carbide slag and Waste Sulfuric Acid from spent acid electricity
The top of rock ballast mixing reactor is with entrance is held, and the agitating shaft rotation with blade keeps solid electric in spent acid carbide slag mixing reactor
Rock ballast material constantly overturns, stirs, and Waste Sulfuric Acid is uniformly sprayed on carbide slag material and is reacted by spray head in reactor, Gu
Body carbide slag material is constantly fed forward with blade, when to be delivered to the outlet of the reactor other end, reacts the solid material of generation
It is discharged by bottom discharge device.
It is of the present invention to utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the spent acid carbide slag hybrid reaction
Device uses semicircle collet shell, and the agitating shaft uses hollow structure, and the heat released in reaction process is mixed by spent acid carbide slag
The cooling medium closed in reactor semicircle collet shell and hollow agitating shaft is taken away, spent acid carbide slag mixing reactor exhaust outlet temperature
Degree is not more than 90 DEG C.
Of the present invention to utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the calcium carbide that process generates occurs for acetylene
Slag is submitted to carbide slag feed bin through bucket elevator and is cached, and passes through carbide slag feed bin rotating blanking valve and carbide slag feed bin Weighing module meter
Spent acid carbide slag mixing reactor, the Waste Sulfuric Acid of acetylene unit tank field unit sulfur waste acid storage tank, through spent acid delivery pump are sent into after amount
It send to spent acid carbide slag mixing reactor, is uniformly sprayed through spray head in inside reactor, with the carbide slag from carbide slag warehouse
It is reacted.
It is of the present invention to utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, in spent acid carbide slag mixing reactor
Air exit pipeline on be provided with air suction inlet, when acetylene content is higher in the gas that reaction generates, pass through be added it is empty
Gas is to be far below explosive range lower limit for acetylene content control.
Of the present invention to utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the gas that reaction generates is washed through two-stage
Tower to be washed to be washed with lye, the cleaning solution in scrubbing tower is 23~25wt% lye of acetylene unit tank field unit alkali liquor storage tank,
It is delivered to second level scrubbing tower through lye delivery pump, is sufficiently washed with the acid tail gas counter current contacting in the scrubbing tower of the second level, to
Concentration of lye drains into first order scrubbing tower down to 10~15wt%, abundant with the acid tail gas counter current contacting in first order scrubbing tower
Washing drains into sewage treatment when concentration of lye is down to 2~5wt% outside.
Utilize the device of calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: mix including spent acid carbide slag
Reactor and at least one level scrubbing tower are provided with carbide slag charging at the top of one end of the spent acid carbide slag mixing reactor
The other end top of mouth and Waste Sulfuric Acid inlet, the spent acid carbide slag mixing reactor is provided with reaction gas outlet, and bottom is set
It is equipped with solid matter outlet, the reaction gas outlet is connect by pipeline at least one level scrubbing tower, at least one level washing
Tower is washed using the gas that cleaning solution generates reaction, is provided with cooling knot on the spent acid carbide slag mixing reactor
Structure, the cooling structure is for taking away the heat released in reaction process.
Device of the present invention using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the spent acid carbide slag are mixed
Closing reactor includes shell and mixing conveying mechanism, and the mixing conveying mechanism includes being arranged in shell and along shell axis
To two agitating shafts with blade arranged side by side and be arranged in outside shell for drive agitating shaft rotate driving mechanism,
The described two agitating shafts intermeshings with blade, revolving speed is consistent under the action of the drive mechanism and rotation direction phase for two agitating shafts
Instead, the driving mechanism includes driving motor and transmission parts, and the power output end of the driving motor passes through transmission parts
With two stirring axis connections.
Device of the present invention using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the cooling structure are half
Justify the shell of jacket type structure and the agitating shaft of hollow structure, the heat released in reaction process is by semicircle collet shell and sky
Cooling medium in heart agitating shaft is taken away.
Device of the present invention using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, the spent acid carbide slag are mixed
The reactor outlet for closing reactor head is connect by pipeline with the air inlet of first order scrubbing tower lower part, the first order washing
Top of tower gas outlet is connect by pipeline with the air inlet of second level scrubbing tower lower part, second level scrubbing tower lower part and acetylene
The connection of device tank field unit alkali liquor storage tank, the second level wash tower bottoms are washed by second level scrubbing tower circulating pump with the second level
It washs tower top to connect to form inner circulation structure, is fed through first with the cleaning solution after the acid tail gas washing in the scrubbing tower of the second level
In grade scrubbing tower, the first order wash tower bottoms connect shape with first order scrubbing tower top by first order scrubbing tower circulating pump
At inner circulation structure.
The present invention is applied to the integrated treatment utilization technology of Waste Sulfuric Acid in drying acetylene production, for calcium carbide legal system acetylene mistake
Cheng Zhonghui generates a large amount of alkaline scrap material, and Waste Sulfuric Acid is reacted to the gypsum of production water supply mud using neutralisation with carbide slag and is mixed
It mixes for producing qualified cement in excessive carbide slag, process of the present invention is simple, and it is with low investment, it both can solve sulfur waste
The pollution of acid environment bring and harm, and spent acid may be implemented and be converted into gypsum, enterprise's production cost is reduced, there is preferable society
Economic benefit.
Detailed description of the invention
Fig. 1 is process flow diagram of the invention.
Fig. 2 is the structural schematic diagram of spent acid carbide slag mixing reactor in the present invention.
Marked in the figure: 1 be spent acid carbide slag mixing reactor, 2a be first order scrubbing tower, 2b be second level scrubbing tower, 3
It is agitating shaft for shell, 4,5 be driving motor, and 6 be transmission parts, and 7 be second level scrubbing tower circulating pump, and 8 wash for the first order
Tower circulating pump.
Specific embodiment
With reference to the accompanying drawing, the present invention is described in detail.
In order to make the objectives, technical solutions, and advantages of the present invention clearer, with reference to the accompanying drawings and embodiments, right
The present invention is further elaborated.It should be appreciated that the specific embodiments described herein are merely illustrative of the present invention, and
It is not used in the restriction present invention.
As shown in Figure 1, a kind of utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, specifically: by carbide slag and sulfur waste
Acid is respectively fed into spent acid carbide slag mixing reactor, and entire reaction process carries out in the closed state, wherein acetylene occurs
The carbide slag that process generates is submitted to carbide slag feed bin through bucket elevator and is cached, and passes through carbide slag feed bin rotating blanking valve and carbide slag
Spent acid carbide slag mixing reactor, the sulfur waste of acetylene unit tank field unit sulfur waste acid storage tank are sent into after the metering of feed bin Weighing module
Acid is pumped to spent acid carbide slag mixing reactor through spent acid conveying, uniformly sprays through spray head in inside reactor, and comes from calcium carbide
The carbide slag of slag warehouse is reacted, and reaction generates calcium sulfate and the water vapour containing impurity such as hydrogen sulfide, and is released a large amount of
Heat, the calcium sulfate of generation unloads through discharge valve to the grey slag car, and by lime-ash vehicle transport to cement plant, that reacts generation contains sulphur
The tail gas for changing the impurity such as hydrogen is discharged by the top of spent acid carbide slag mixing reactor, and is pumped into through blower to scrubbing tower and is washed with lye
Wash, it is peace and quiet after the emptying of tail gas high point, cleaning solution drains into sewage treatment, and scrubbing tower cleaning solution need to control pH value, guarantee in alkali
Realize that washing tail gas ensures tail gas qualified discharge under character state, to avoid environmental pollution；And the heat released in reaction process by
Cooling medium in the cooling structure of spent acid carbide slag mixing reactor is taken away, and the reaction in spent acid carbide slag mixing reactor is made
Temperature is kept in a certain range.
In the present embodiment, carbide slag and Waste Sulfuric Acid are from the top of spent acid carbide slag mixing reactor with holding entrance, spent acid
Agitating shaft rotation in carbide slag mixing reactor with blade makes solid carbide slag material constantly overturn, stir, continuous to update
Reaction medium, Waste Sulfuric Acid are uniformly sprayed on carbide slag material and are reacted by spray head in reactor, make neutralization reaction process
Sufficiently, completely, meanwhile, solid carbide slag material is constantly fed forward with blade, when to be delivered to the outlet of the reactor other end, instead
The solid material that should be generated is discharged by bottom discharge device.
Wherein, the spent acid carbide slag mixing reactor uses semicircle collet shell, and the agitating shaft uses hollow structure,
The heat released in reaction process is by cooling Jie in spent acid carbide slag mixing reactor semicircle collet shell and hollow agitating shaft
Matter is taken away, and spent acid carbide slag mixing reactor exhaust port temperatures are not more than 90 DEG C, otherwise can burn out scrubbing tower contents and fill out
Material；Industrial sprinkler head is arranged in different parts in reactor, when spent acid carbide slag mixing reactor temperature increases, to spent acid electricity
The suitable cooling water of spray in rock ballast mixing reactor, the water heat absorption sprayed into spent acid carbide slag mixing reactor become water steaming
Gas, and be vented with tail gas, decline the temperature of spent acid carbide slag mixing reactor in time；Due to containing about in carbide slag
2wt% unreacted calcium carbide has a small amount of acetylene gas and generates, therefore acetylene is arranged on exhaust emissions pipeline when reacting with Waste Sulfuric Acid
With oxygen content in-line analyzer, while on the air exit pipeline of spent acid carbide slag mixing reactor be arranged air suck
Mouthful, when acetylene content is higher in the gas that reaction generates, by the way that air is added controlling acetylene content far below explosion
Range lower limit.
The gas that reaction generates is washed through two-stage scrubbing tower with lye, and the cleaning solution in scrubbing tower is acetylene unit tank
23~25wt% lye of area's unit alkali liquor storage tank is delivered to second level scrubbing tower through lye delivery pump, in the scrubbing tower of the second level
Acid tail gas counter current contacting sufficiently wash, drain into first order scrubbing tower down to 10~15wt% to concentration of lye, washed with the first order
The acid tail gas counter current contacting washed in tower is sufficiently washed, and when concentration of lye is down to 2~5wt%, drains into sewage treatment outside, is used
Two-stage alkali cleaning handles the exhaust gas that neutralization reaction generates, and with the sour gas generated except dereaction, reduces environmental pollution.
As shown in Figure 1, a kind of device using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, including spent acid carbide slag are mixed
Reactor 1 and at least one level scrubbing tower are closed, is provided with carbide slag at the top of one end of the spent acid carbide slag mixing reactor 1
The other end top of feed inlet and Waste Sulfuric Acid inlet, the spent acid carbide slag mixing reactor 1 is provided with reaction gas outlet, bottom
Portion is provided with solid matter outlet, and the reaction gas outlet is connect by pipeline at least one level scrubbing tower, on the pipeline
Be provided with centrifugal fan comprising the main components such as casing, impeller and bearing housing constitute, using impeller rotation in systems
Air quantity is generated, so that system be made to generate negative pressure, the tail gas of generation is taken away and is finally emptied after feeding scrubbing tower is peace and quiet；It is described at least
First grade scrubber is washed using the gas that cleaning solution generates reaction, is set on the spent acid carbide slag mixing reactor 1
It is equipped with cooling structure, the cooling structure is semicircle collet for taking away the heat released in reaction process, the cooling structure
The shell 3 of formula structure and the agitating shaft 4 of hollow structure, the heat released in reaction process is by semicircle collet shell 3 and hollow
Cooling medium in agitating shaft 4 is taken away, and the cooling medium uses chilled water, and noncirculating water, as far as possible guarantee withdraw more heat
Amount.
Wherein, spent acid carbide slag mixing reactor carbide slag charging uses measurable screw-feeder, convenient for accurate control
Carbide slag feeding quantity processed, while guaranteeing stabilization, uniformly to reactor feed, spent acid carbide slag mixing reactor carbide slag discharge
Using measurable spiral discharging device, convenient for accurate control reaction conversion ratio；The spent acid of spent acid carbide slag mixing reactor conveys
Pump uses the metering pump with variable frequency adjustment, accurately controls spent acid additional amount by adjusting metering pump frequency, monitor closely reacts well
Device temperature and pressure makes the progress for reacting continuous-stable.
As shown in Fig. 2, the spent acid carbide slag mixing reactor 1 includes shell 3 and mixing conveying mechanism, the stirring
Conveying mechanism includes being arranged in shell 3 and along axial arranged side by side two agitating shafts 4 with blade and setting of shell 3
The driving mechanism for driving agitating shaft 4 to rotate outside shell 3, two agitating shafts divide driving shaft and driven shaft, and described two
Agitating shaft 4 with blade is intermeshed, and revolving speed is consistent under the action of the drive mechanism and rotation direction is on the contrary, useless for two agitating shafts 4
Sulfuric acid and carbide slag when carbide slag mixing reactor reacts, according to circumstances adjust two agitating shafts of reactor mixing direction and
Mixing speed guarantees the two uniformly mixing as far as possible, avoids localized hyperthermia, agitating shaft is welded by thick-walled pipe and spindle nose, in axis
On be welded with blade, the outer surface of axis and blade, which is lined with, breathes out C276 plate, improves the service life of blade and axis；The driving mechanism includes
The power output end of driving motor 5 and transmission parts 6, the driving motor 5 is connected by transmission parts 6 and two agitating shafts 4
It connects.Wherein, the transmission parts 6 are made of motor, gear reducer, shaft coupling, gear drive.Driving mechanism power reserve is big, branch
The long-term continuous operation of reactor is held, motor speed, the final revolving speed for changing agitating shaft, the revolving speed of agitating shaft are adjusted by frequency converter
Range is adjustable between 5~15 rpm, to adapt to the different process conditions in scene.
In the present embodiment, the reactor outlet at 1 top of spent acid carbide slag mixing reactor passes through pipeline and first
The air inlet connection of the lower part grade scrubbing tower 2a, the top gas outlet first order scrubbing tower 2a pass through pipeline and second level scrubbing tower
The air inlet of the lower part 2b connects, and the lower part second level scrubbing tower 2b is connect with acetylene unit tank field unit alkali liquor storage tank, described
The second level bottom scrubbing tower 2b connect to form interior circulation knot with the second level top scrubbing tower 2b by second level scrubbing tower circulating pump 7
The cleaning solution after acid tail gas washing in structure, with second level scrubbing tower 2b is fed through in first order scrubbing tower 2a, and described first
The grade bottom scrubbing tower 2a connect to form inner circulation structure by first order scrubbing tower circulating pump 8 with the top first order scrubbing tower 2a.
Carbide slag may be carried secretly containing sour tail gas in view of the discharge of carbide slag mixing reactor, and first order washing tower internals is adopted
With grid tower tray, without the use of traditional packed tower, filler is easy to block up, and some troubles may be brought to operation and maintenance, and
Grid tower tray has excellent anti-clogging, while being conducive to heat and mass.Grid tower tray uses angle steel, having a size of 50mm ×
50mm × 2mm, column plate spacing are 200mm, and the angle of upper layer and lower layer grid tower tray is 90 °.Simultaneously in view of in circulating cleaning solution
With carbide slag solid, liquid distribution trough uses knockdown type slotted disk gas-liquid distributor, liquid spraying density 30m3/m2H, upper layer
Spray aperture is 12mm, and lower layer's spray aperture is 10mm, and there is knockdown type slotted disk gas-liquid distributor excellent cloth fluidity can and resist
Dirty easy cleaning characteristic, big suitable for operating flexibility, treatment liquid and gas flow are big, and tower of the liquid containing solid impurity, energy
Avoid the plugging phenomenon occurred using the in-line calandria liquid distributors of tradition or sprinkle nozzle liquid distribution trough.
It is washed in view of mainly passing through first order scrubbing tower containing sour tail gas, most carbide slags in gas phase are
Washing removes, therefore second level scrubbing tower uses traditional packed tower, and packing specific area is big, can greatly increase gas-liquid contact face
Product increases washing tail gas effect, reaches tail gas emptying and requires.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in essence of the invention
Made any modifications, equivalent replacements, and improvements etc., should all be included in the protection scope of the present invention within mind and principle.
Claims (10)
1. utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: by carbide slag and Waste Sulfuric Acid be respectively fed to
In spent acid carbide slag mixing reactor, entire reaction process carries out in the closed state, reacts the solid material of generation by giving up
The bottom discharge device of sour carbide slag mixing reactor is discharged, and reacts the gas of generation by the top of spent acid carbide slag mixing reactor
Portion's discharge, and being sent by top suction opening to scrubbing tower alkali liquid washing, it is peace and quiet after tail gas high point be vented, cleaning solution drains into dirt
Water process, the heat released in reaction process are taken away by the cooling medium in the cooling structure of spent acid carbide slag mixing reactor,
Keep the reaction temperature in spent acid carbide slag mixing reactor in a certain range.
2. it is according to claim 1 utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: carbide slag and
Waste Sulfuric Acid holds entrance, the stirring with blade in spent acid carbide slag mixing reactor from the top of spent acid carbide slag mixing reactor is same
Axis rotation makes solid carbide slag material constantly overturn, stir, and Waste Sulfuric Acid is uniformly sprayed at carbide slag material by spray head in reactor
It goes up and reacts, solid carbide slag material is constantly fed forward with blade, when to be delivered to the outlet of the reactor other end, reaction
The solid material of generation is discharged by bottom discharge device.
3. according to claim 2 utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: the spent acid
Carbide slag mixing reactor uses semicircle collet shell, and the agitating shaft uses hollow structure, the heat released in reaction process
It is taken away by the cooling medium in spent acid carbide slag mixing reactor semicircle collet shell and hollow agitating shaft, the mixing of spent acid carbide slag
Reactor exhaust port temperatures are not more than 90 DEG C.
4. according to claim 1 utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: acetylene occurs
The carbide slag that process generates is submitted to carbide slag feed bin through bucket elevator and is cached, and passes through carbide slag feed bin rotating blanking valve and carbide slag
Spent acid carbide slag mixing reactor, the sulfur waste of acetylene unit tank field unit sulfur waste acid storage tank are sent into after the metering of feed bin Weighing module
Acid is pumped to spent acid carbide slag mixing reactor through spent acid conveying, uniformly sprays through spray head in inside reactor, and comes from calcium carbide
The carbide slag of slag warehouse is reacted.
5. according to claim 1 utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: in spent acid electricity
It is provided with air suction inlet on the air exit pipeline of rock ballast mixing reactor, when acetylene content is higher in the gas that reaction generates
When, by the way that air is added so that acetylene content control is being far below explosive range lower limit.
6. as claimed in any of claims 1 to 5 utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, feature
Be: the gas for reacting generation is washed through two-stage scrubbing tower with lye, and the cleaning solution in scrubbing tower is acetylene unit tank field
23~25wt% lye of unit alkali liquor storage tank is delivered to second level scrubbing tower through lye delivery pump, in the scrubbing tower of the second level
Acid tail gas counter current contacting is sufficiently washed, and drains into first order scrubbing tower down to 10~15wt% to concentration of lye, is washed with the first order
Acid tail gas counter current contacting in tower is sufficiently washed, and when concentration of lye is down to 2~5wt%, drains into sewage treatment outside.
7. utilizing the device of calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: anti-including the mixing of spent acid carbide slag
Device (1) and at least one level scrubbing tower are answered, is provided with carbide slag at the top of one end of the spent acid carbide slag mixing reactor (1)
The other end top of feed inlet and Waste Sulfuric Acid inlet, the spent acid carbide slag mixing reactor (1) is provided with reaction gas outlet,
Bottom is provided with solid matter outlet, and the reaction gas outlet is connect by pipeline at least one level scrubbing tower, and described at least one
Grade scrubbing tower is washed using the gas that cleaning solution generates reaction, is set on the spent acid carbide slag mixing reactor (1)
It is equipped with cooling structure, the cooling structure is for taking away the heat released in reaction process.
8. the device according to claim 7 using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: institute
Stating spent acid carbide slag mixing reactor (1) includes shell (3) and mixing conveying mechanism, and the mixing conveying mechanism includes setting
In the shell (3) and along shell (3) axially two agitating shafts (4) with blade and setting arranged side by side shell (3) outside
For drive agitating shaft (4) rotate driving mechanism, described two with blade agitating shafts (4) intermeshing, two stirring
Revolving speed is consistent under the action of the drive mechanism and rotation direction is on the contrary, the driving mechanism includes driving motor (5) and passes for axis (4)
The power output end of dynamic component (6), the driving motor (5) is connect by transmission parts (6) with two agitating shafts (4).
9. the device according to claim 8 using calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, it is characterised in that: institute
State the agitating shaft (4) of the shell (3) that cooling structure is semicircle jacket type structure and hollow structure, the heat released in reaction process
Amount is taken away by the cooling medium in semicircle collet shell (3) and hollow agitating shaft (4).
10. utilizing the device of calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique, feature according to claim 7,8 or 9
Be: the reactor outlet at the top of the spent acid carbide slag mixing reactor (1) passes through under pipeline and first order scrubbing tower (2a)
The air inlet in portion connects, and gas outlet passes through pipeline and the lower part second level scrubbing tower (2b) at the top of the first order scrubbing tower (2a)
Air inlet connection, the second level scrubbing tower lower part (2b) are connect with acetylene unit tank field unit alkali liquor storage tank, the second level
The scrubbing tower bottom (2b) connect to form interior circulation knot with the top second level scrubbing tower (2b) by second level scrubbing tower circulating pump (7)
The cleaning solution after acid tail gas washing in structure, with second level scrubbing tower (2b) is fed through in first order scrubbing tower (2a), described
In the first order scrubbing tower bottom (2a) is connect with the top first order scrubbing tower (2a) by first order scrubbing tower circulating pump (8) and to be formed
Loop structure.
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| CN201811427989.9A CN109603700A (en) | 2018-11-27 | 2018-11-27 | Utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and device |
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| CN201811427989.9A CN109603700A (en) | 2018-11-27 | 2018-11-27 | Utilize calcium carbide Slag treatment acetylene cleaning Waste Sulfuric Acid technique and device |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111957174A (en) * | 2020-07-31 | 2020-11-20 | 吴菊芬 | A cooling absorbing device for chemical industry tail gas treatment |
| CN114028928A (en) * | 2021-08-17 | 2022-02-11 | 安徽华塑股份有限公司 | Method and device for treating tail gas by adopting excimer light source technology |
| CN114031102A (en) * | 2021-08-16 | 2022-02-11 | 安徽华塑股份有限公司 | Process for preparing gypsum by-product sulfuric acid |
| CN115321491A (en) * | 2022-07-06 | 2022-11-11 | 宜宾海丰和锐有限公司 | Method for continuously treating odor of acetylene-cleaning waste sulfuric acid |
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| CN104760985A (en) * | 2015-03-25 | 2015-07-08 | 聊城市鲁西化工工程设计有限责任公司 | System and method for producing carbide slag chemical gypsum by using industrial waste sulfuric acid |
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| CN111957174A (en) * | 2020-07-31 | 2020-11-20 | 吴菊芬 | A cooling absorbing device for chemical industry tail gas treatment |
| CN114031102A (en) * | 2021-08-16 | 2022-02-11 | 安徽华塑股份有限公司 | Process for preparing gypsum by-product sulfuric acid |
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| CN115321491A (en) * | 2022-07-06 | 2022-11-11 | 宜宾海丰和锐有限公司 | Method for continuously treating odor of acetylene-cleaning waste sulfuric acid |
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