CN105731501B - A kind of utilization sour gas produces the method and device of solid sodium bicarbonate - Google Patents
A kind of utilization sour gas produces the method and device of solid sodium bicarbonate Download PDFInfo
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- CN105731501B CN105731501B CN201410732126.8A CN201410732126A CN105731501B CN 105731501 B CN105731501 B CN 105731501B CN 201410732126 A CN201410732126 A CN 201410732126A CN 105731501 B CN105731501 B CN 105731501B
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Abstract
The present invention provides the method and device that a kind of utilization sour gas produces solid sodium bicarbonate; the process is protection liquid with sodium carbonate as absorbing liquid, with sodium hydroxide solution as cleaning solution, with sodium hydrosulfide; sent to laundry by absorbing reaction, separation of solid and liquid, punching and washed and four sections of processes of secondary separation of solid and liquid; tail gas qualified discharge is realized, and produces the solid sodium bicarbonate product and sodium hydrosulfide product for meeting national product quality standard.The process unit send washer, process pipelines and pump to constitute by liquid film absorbing reaction device, solid-liquid separator, punching.Acidic Gas Treating method and device of the invention, realizes the double goal of sour gas purification and pollutant resources.
Description
Technical field
The present invention relates to a kind of Acidic Gas Treating method and device, belong to field of chemical engineering, it is adaptable to which petrochemical industry is led
Comprehensive utilization rich in hydrogen sulfide and carbon dioxide gas mixture in the sour gas of domain, is especially suitable for carbonated in sour gas
Concentration operating mode higher.
Background technology
Element sulphur is prevalent in fossil fuel, when oil enters fine fractionation with deep-processing process, is formed with hydrogen
Hydrogen sulfide gas, the process is toward contact association carbon dioxide, ammonia etc..Element sulphur is there is also in the raw material of metallurgy industry,
But because its process is generally worst hot case, element sulphur is oxidized, and mainly generates sulfur dioxide sour gas.Other produce acid
The operating mode of gas to mostly occur and use process in chemical process or chemical products.
The sour gas of petroleum chemical industry mostlys come from natural gas extraction, associated gas, Coal Chemical Industry, oil-refining chemical row
Industry.Can have a negative impact to follow-up treatment again during the energy is processed（As catalyst poisoning, pipeline are rotten
Erosion）, it is therefore necessary to control the sulfur content in raw materials technology and product.During desulfurization element sulphur in the form of hydrogen sulfide from
To go into operation discharge into outside process system and burned into boiler, air is entered in the form of sulphur dioxide.China's flue gas desulfurization technique starting is compared
Evening, desulfuration byproduct utilization rate is lower.So, most desulfuration byproducts are idle to be stacked, and is taken a large amount of land resources and is made
Into secondary pollution.And use desulfurizing agent circular regeneration to use, reclaim the desulfurization technology of Sulphur ressource, its reclaim product be elemental sulfur and
Sulfuric acid etc., can be as industrial chemicals, for other sulfur removal technologies, and it reclaims product more preferable market prospects.
The treatment of China's sour gas, mainly uses sour gas to prepare sulphur, and the more commonly used at present has two kinds of works
Skill technology, one kind is two grades of claus process combination tail gas hydrogenation reducing process, and solvent absorption process technology.Another technique
Technology is the LO-CAT technologies of gas technology Products Co., Ltd of Merichem companies of U.S. exploitation.
Crouse's sulphur recovery technology have passed through it is a series of development and it is perfect, formd a more huge skill
Art system.Initial Claus method is that hydrogen sulfide and oxygen are first mixed, and catalysis oxidation generation is single in a certain temperature conditions
Matter sulphur.Original Claus method is mainly characterized by with air as oxidant, and reaction is carried out in a fixed bed adiabatic reactor.
German method our company is improved to original Claus method within 1938, and the oxidation reaction of hydrogen sulfide is divided into two ranks
Duan Jinhang：First stage be 1/3 Oxidation of Hydrogen Sulfide for sulfur dioxide, reaction heat Steam Recovery；Second stage is remaining 2/3
Hydrogen sulfide and sulfur dioxide reaction generation elemental sulfur.This technological innovation solves 3 problems of original Claus method：One is gram
Louth reacting furnace is mainly the reaction that Oxidation of Hydrogen Sulfide is sulfur dioxide, it is not necessary to maintain low reaction temperature；Two be 80% it is anti-
Answering heat can reclaim, and way of recycling is steam；Three is that the treating capacity of hydrogen sulfide improves 50 times than original Claus method.This skill
Art is referred to as improveing Claus method.In actual applications, in order to adapt to different sour gas compositions and meet increasingly strict two
Sulfur oxide emissions requirement, improvement Claus method forms four kinds of basic technical process：Direct current method, shunting, sulfur cycle method and
Direct oxidation method.
Improvement Claus method is called Crouse's technology for short, or is referred to as classical Claus method.Claus method is used as existing
Modern most widely used sulphur recovery technology, people have done substantial amounts of research to this technology.Oxygen-enriched gram is proposed on this basis
Louth technology, super Claus technology（Super Claus99）, super excellent Crouse's technology（Super Claus99.5）Deng.
So far, the treatment topmost means of hydrogen sulfide are hydramine method absorption technique and Claus unit sulfur recovery unit, especially
After super Claus Sulfur Recovery Technique exploitation, the removal efficiency of hydrogen sulfide has reached more than 99% for it.At present, the method is at home and abroad obtained
To extensive use.
LO-CAT techniques make hydrogen sulfide be converted into elementary sulfur, the removing of hydrogen sulfide using the iron catalyst of multicomponent chelate
Rate is more than 99.9%.LO-CAT techniques can be adapted to that the fluctuation of acid tolerance is larger, and hydrogen sulfide content 0~100% it is various
Operating mode, raw material condition of compatibility is wide in range, adapts to the actual conditions of sour gas fluctuating change.And LO-CAT liquid redox technical office
Reason scheme does not use any poisonous chemicals, and will not produce any harmful exhaust gas by-products, environmentally safe
Catalyst can be constantly regenerating in processing procedure.The stability and economic benefit of LO-CAT sulfur removal technologies operation are depended primarily on
The consumption of the stability and chemicals of doctor solution.According to different its stability that complex compound is formed between iron ion and complexing agent
Also different characteristics, LO-CAT have selected different complexing agents to configure complexing ferrous solution, the generation for preventing ferrous sulfide from precipitating.
LO-CAT technology features are simple technological processes, and operating flexibility is big, and floor space is small, first investment cost
It is low；But operating cost is too high, chemical solvent consumption is big, is not suitable for larger desulfurizer, and iron content waste water is difficult, sulphur
Product quality is not high.LO-CAT techniques foreign countries are directed generally to reduce production cost, reduce equipment size and improve sulphur
Quality etc..Domestic aspect, the dominant catalyst and other chemical agents that LO-CAT techniques are used is import, associated catalysts
Research work also in the research and development of starting stage LO-CAT catalyst also need put into extensive work.
Sulfuric acid is widely used in all trades and professions as one of basic industrial chemicals.Made with the hydrogen sulfide contained in sour gas
It is raw material, many processing steps can be saved, that is, save investment, cost is reduced again, can also effectively recycles sulphur
Resource.Because small-sized sour gas tolerance is smaller, the industrial sulphuric acid of low concentration can only be produced, it is impossible to which productive value is higher
Oleum, economic benefit is not high, simultaneously as the transport of sulfuric acid, storage acquire a certain degree of difficulty, therefore, it is steady near oil plant
The fixed market demand is the key factor for limiting its development.Patent CN101143714A discloses a kind of acidity of utilization high hydrocarbon-containing
The method that gas prepares sulfuric acid, acid hydrogen sulfide gas are respectively enterd in first, second sulfureted hydrogen burning stove and burnt in proportion, from the
One combustion furnace high-temperature furnace gas out, by burner-gas cooler, uniform temperature are cooled to by air, subsequently into the second combustion furnace
Continue and the combust of surplus air one, the second combustion furnace high-temperature furnace gas out in furnace gas with the sulfide hydrogen sour gas of supplement
Into waste heat boiler heat accumulation, entering back into purification section, conversion section, dry absorption section carries out conventional relieving haperacidity.This process can only
98% industrial sulphuric acid is produced, it is impossible to productive value oleum higher, simultaneously as the transport of sulfuric acid, storage have certain difficulty
Degree, therefore, the market demand of stabilization is the key factor for limiting its development near oil plant.
The comprehensive utilization of sour gas, can be with alkaline agent using the less absorption process sulfur removal technology technology of investment, the technology
Absorbent, sulphite is prepared by vulcanization hydrogen retrieval.Sour gas is carried out burning generation sulfur dioxide by the technology, is then fed into inhaling
Receiving tower carries out chemical absorbing generation sulfite solution, then solution and alkaline absorbent are reacted, and prepares sulphite liquid product
Product, or sulphite crystal is generated, the operation such as separated, dry is prepared into sulphite solid product.The process unit
Flow is shorter, and reaction is simple, and operating flexibility is big, is applicable to the sour gas operating mode of medium and small tolerance, and tolerance fluctuation to producing
Journey can produce solid or fluid product without influence by selecting different operations, select different absorbents to produce difference
The sulphite of type, and tail gas qualified discharge is realized by three sections of absorptions, realize the purpose of cleaning of off-gas.But actual production
There is equipment corrosion in journey serious, maintenance cost determination higher.
The comprehensive utilization of sour gas, it would however also be possible to employ the less novel absorbent method sulfur removal technology technology of investment, produces chemical industry
Product akali sulphide.Akali sulphide is widely used in the industry such as ore dressing, agricultural chemicals, dyestuff, tanning production and organic synthesis.Wherein, contaminate
NaHS is used to synthesize organic intermediate and prepares the auxiliary agent of sulfur dye in material industry；Leather industry is used for the depilation of rawhide
And tanning, it is applied to leather industry and routinely soaks, energy uniform loose's cladding fibr tissue enables cladding slowly to expand, with bright
Aobvious crease-resistant and raising leather yield effect, and can ensure that the color of cladding indigo plant skin, it is ensured that the sense organ and quality of cladding；Chemical fertilizer industry
Middle NaHS can be used to slough the free sulfur in activated carbon desulphurization agent；It is manufacture ammonium sulfide and agricultural chemicals ethyl mercaptan in pesticide industry
The raw material of semi-finished product；NaHS is largely used to copper ore dressing in mining industry；For sulfurous acid dyeing in staple fibre production
Etc. aspect；NaHS can be additionally used in wastewater treatment.With increasingly harsh, the sulfur product consumption commercially of environmental regulation
Reduce, price also increasingly drops, about 600 yuan/ton of Sulfur price, and the market price of vulcanized sodium is 2600 yuan/ton, NaHS
The market price be even more and reach 3200 yuan/ton.
Low concentration solution product is produced using sour gas：Low concentration is prevented effectively from crystallization, but solution product does not use valency
Value, it is necessary to carry out multistage evaporation concentration, energy consumption is very high, does not have economy.
Patent CN102515112 A《The hydrogen sulfide waste gas produced in a kind of utilization viscose rayon production prepare vulcanized sodium
Method》Spray-absorption, double flash evaporation and crystallisation by cooling process are set, and the technology can only produce the extremely low solution of concentration, there is stream
The problems such as journey is long, generate the evaporation of low concentration product liquid, concentration process high energy consumption.
Patent CN103466559 A《Continuous production technology of three kettle type sodium hydrosulfide》, with NaOH as absorbing liquid, use
Three-level counter-current absorption process, realizes the continuous prodution of sodium hydrosulfide.The unstripped gas of the technology need to carry out removing titanium dioxide
, there is the problems such as long flow path, process units are complicated, it is very high to be particularly feed gas preprocessing energy consumption, and device is complicated in the pretreatment of carbon.
Patent CN101654226 A《The method of preparing alkali sulphide by using sulfur dye waste gas》, with hydrogen sulfide containing sulfur dye waste gas as former
Material, adds alkali to be reacted, and generates akali sulphide.The technology production process is intermittently operated, there is alkaline agent and product low concentration, clearly
Cleaning device is numerous and diverse, produces waste water, and example 3,4 is also easy to produce blocking, cannot continuously generate, and there are problems that solid waste.Patent
CN103495329 A《A kind of technique for removing hydrogen sulfide and Recovered sulphur》, hydrogen sulfide, sodium carbonate are removed by sewage stripping and are inhaled
Receive hydrogen sulfide, rich solution and sulphur foam is produced under desulphurization catalyst effect, and filtering, molten sulphur production elemental sulfur four part are constituted.Should
Technology has that desulphurization catalyst is expensive, and sulphur foam entrained catalyst causes sulphur product purity not high, the problems such as have solid waste to produce.
Sour gas is the mixed gas of hydrogen sulfide and carbon dioxide：In petrochemical industry, sour gas is usually sulphur
Change hydrogen, carbon dioxide mix body, with alkaline agent as absorbent, production vulcanized sodium or sodium hydrosulfide product when, it will usually formed
The materials such as vulcanized sodium, NaHS, sodium carbonate, sodium acid carbonate, when concentration reaches certain value, can produce crystallization, cause device
Block and cannot normally realize continuous prodution.
For the Acidic Gas Treating of petrochemical industry, also stay at present " basic reason for utilizing be hydrogen sulfide be pole
The extensive thoughtcast of dangerous toxic gas, it is necessary to be used or convert ".At present, " efficiency multiplication, economy can hold
, it is necessary to the Acidic Gas Treating method of a kind of new " energy-conservation, consumption reduction, environmental protection " under the new demand of supervention exhibition ".
The content of the invention
In view of the shortcomings of the prior art, the present invention provides the method and dress of a kind of utilization sour gas production solid sodium bicarbonate
Put, compared with prior art, it is adaptable to rich in hydrogen sulfide and carbon dioxide gas mixture in petrochemical industry sour gas
Comprehensive utilization, carbonated concentration operating mode higher in especially suitable sour gas, can realize sour gas purification and pollutant
Resource double goal.
In order to solve the above-mentioned technical problem, the present invention provides a kind of method that utilization sour gas produces solid sodium bicarbonate,
Methods described include absorbing reaction, separation of solid and liquid, punching send to laundry wash, secondary separation of solid and liquid Four processes, the specific step of methods described
It is rapid as follows：
（1）Sour gas enters absorbing reaction device, and absorbing liquid sodium carbonate haptoreaction, after reacted sour gas is purified
Qualified discharge, the reaction solution for obtaining enters one-level solid-liquid separator, and solid-phase material and liquid phase material are obtained after separation；
（2）Step（1）The liquid phase material part for obtaining returns to absorbing reaction device through the liquid phase material entrance of absorbing reaction device,
Collected as product and stored in part；
（3）Step（1）The solid-phase material for obtaining enters washing punching and send device, washing is contacted with sodium hydroxide solution, after washing
The cleaning solution for obtaining enters two grades of solid-liquid separators, and isolated solid-phase material is Sodium bicarbonate product, the liquid phase thing for obtaining
Material returns to absorbing reaction device as absorbing liquid.
In method of the present invention using sour gas production solid sodium bicarbonate, step（1）The liquid phase material part warp for obtaining
The liquid phase material entrance of absorbing reaction device returns to absorbing reaction device, and the liquid phase material of the return absorbing reaction device accounts for liquid phase material
The 30%~70% of total volumetric flow rate, preferably 40%~50%.
In method of the present invention using sour gas production solid sodium bicarbonate, the sodium bicarbonate solid warp of the reaction generation
After separation using sodium hydroxide solution carry out washing it is deodorant；Solution after washing mixes as the continuation of reactive absorption liquid with sodium carbonate
Use.The solid sodium bicarbonate that separation of solid and liquid is obtained enters washing punching and send device, and providing punching using sodium hydroxide solution send
Power, and be sufficiently mixed with sodium acid carbonate, realize the washing process of sodium acid carbonate.
In method of the present invention using sour gas production solid sodium bicarbonate, the mass concentration of the sodium hydroxide solution is
20%~60%, preferably 32%~40%.The Na2CO3Concentration of polymer solution is 10%~30%, preferably 15%~25%.
In method of the present invention using sour gas production solid sodium bicarbonate, the reaction temperature of the absorbing reaction device is 70
~100 DEG C, preferably 80~95 DEG C.The absorbing liquid is 3~20L/m with the liquid-gas ratio of sour gas3, preferably 5~10L/m3。
In method of the present invention using sour gas production solid sodium bicarbonate, the sour gas includes hydrogen sulfide and titanium dioxide
Carbon.
In method of the present invention using sour gas production solid sodium bicarbonate, step（3）Described in sodium hydroxide solution with
Step（1）The volume flow ratio of the solid-phase material for obtaining is 3/1~1/1, preferably 3/2~2/1.
In method of the present invention using sour gas production solid sodium bicarbonate, the absorbing reaction device is by upper, middle and lower segment
Constitute, wherein, epimere is liquid film generator tube, and stage casing is reaction tube, and hypomere is gas-liquid separation pipe, the liquid film generator tube, reaction
Pipe, gas-liquid separation pipe go to upper and lower and are connected in series, and for same axis is arranged；
The liquid film generator tube is made up of outer cylinder body, inner barrel, upper annular closure disk and lower annular closure disk, and liquid film occurs
The some liquid channels in level, annular spread are opened up on the inner barrel of pipe, liquid film generator tube is provided with gas phase entrance and liquid phase thing
Material entrance；
The reaction tube is from top to bottom followed successively by feed zone, contraction section, trunnion section, expansion segment and discharging section, the reaction
The feed zone upper end of pipe is connected with the inner barrel lower end of liquid film generator tube, and the tube wall of reaction tube is provided with absorbing liquid entrance, absorbing liquid
Entrance is located at trunnion section top；
The gas-liquid separation pipe is made up of upper cover plate, gas-liquid separation pipe inner barrel, gas-liquid separation pipe outer cylinder body and bottom plate；
The inner barrel top of gas-liquid separation pipe is connected with the discharging section lower end of reaction tube, and gas-liquid separation pipe is provided with gaseous phase outlet and liquid phase goes out
Mouthful.
In above-mentioned absorbing reaction device, the liquid film generator tube is provided with gas phase entrance and liquid phase material entrance, and the gas phase enters
Mouth is arranged on the upper end of the inner barrel of liquid film generator tube, and the liquid phase material entrance is arranged on the side of the outer cylinder body of liquid film generator tube
On wall.
In above-mentioned absorbing reaction device, the liquid channel is the one kind in triangle, circle, strip or continuous annular space,
Preferably continuous annular space.The gross area of liquid channel is the liquid phase material entrance horizontal stroke of absorbing reaction device on liquid film generator tube inner barrel
1~12 times of sectional area, preferably 3~5 times.
In above-mentioned absorbing reaction device, the absorbing liquid entrance connection liquid phase distributor of the reaction tube, liquid phase distributor is set
On reaction tube center line, absorbing liquid is sprayed from top to bottom, liquid phase distributor is settable 1~10, preferably 4~6.
In above-mentioned absorbing reaction device, the inner barrel bottom of the gas-liquid separation pipe opens up teeth groove, and tooth slot structure is sector
Groove, square teeth groove, triangle teeth groove, preferably lance tooth slot structure, space width are 3mm~20mm, preferably 5mm~8mm；
Its bottom angle is 15~90 °, preferably 30~60 °.
In above-mentioned absorbing reaction device, the gas-liquid separation pipe is provided with gaseous phase outlet and liquid-phase outlet, and gaseous phase outlet is arranged on
On the side wall of the outer cylinder body of gas-liquid separation pipe, and the position of gaseous phase outlet exports higher than the lower end of the inner barrel of gas-liquid separation pipe,
Liquid-phase outlet is located at the bottom of the outer cylinder body of gas-liquid separation pipe.
In method of the present invention using sour gas production solid sodium bicarbonate, the one-level solid-liquid separator, two grades of solid-liquids
Separator includes housing, driving wheel, driven pulley, filter bag, scraper plate and dividing plate；The solid-liquid separator is divided into feed zone, solid-liquid
Disengagement zone and discharge zone, the feed zone are connected with the material inlet of housing upper, and the solid-liquid displacement zone is arranged in housing
Middle part, is made up of driving wheel, driven pulley, scraper plate, filter bag, by being provided with the filtering of uniform sieve aperture between driving wheel and driven pulley
Band connection, the scraper plate is set in inner walls, and blade surface and active wheel surface are tangent relation, and scraper plate and driving wheel it
Between have a certain interval, the scraper plate is used to scrape the crystal on filter bag, and the discharge zone is located at lower housing portion, by dividing plate
It is divided into solid phase discharge zone and liquid phase discharge zone, solid phase discharge zone bottom is provided with solid-phase material outlet, the liquid phase discharge zone
Liquid phase material outlet is provided with, the dividing plate is located at immediately below scraper plate axial location, and dividing plate lower end is fixed on solid-liquid separator housing
There is certain interval bottom, dividing plate upper end with driving wheel.
The present invention provides the device that a kind of utilization sour gas produces solid sodium bicarbonate, and described device includes absorbing reaction
Device and two grades of solid-liquid separators are sent in device, one-level solid-liquid separator, washing punching；The gas phase entrance and sour gas of the absorbing reaction device
Suction line is connected, and the liquid-phase outlet of absorbing reaction device is connected with the entrance of one-level solid-liquid separator, one-level solid-liquid separator
Liquid-phase outlet point two-way, wherein the 1st tunnel is connected with the liquid phase material entrance of absorbing reaction device, the 2nd tunnel is connected with product storage tank；One
The solid-phase outlet of level solid-liquid separator send the entrance of device to be connected with washing punching, and the cleaning solution entrance and alkali liquor inlet of device are sent in washing punching
Pipeline is connected, and washing punching send the outlet of device to be connected with the entrance of two grades of solid-liquid separators, two grades of liquid-phase outlets of solid-liquid separator
It is connected with the absorbing liquid entrance of absorbing reaction device.
In device of the present invention using sour gas production solid sodium bicarbonate, the absorbing reaction device is by upper, middle and lower segment
Constitute, wherein, epimere is liquid film generator tube, and stage casing is reaction tube, and hypomere is gas-liquid separation pipe, the liquid film generator tube, reaction
Pipe, gas-liquid separation pipe go to upper and lower and are connected in series, and for same axis is arranged；
The liquid film generator tube is made up of outer cylinder body, inner barrel, upper annular closure disk and lower annular closure disk, and liquid film occurs
The some liquid channels in level, annular spread are opened up on the inner barrel of pipe, liquid film generator tube is provided with gas phase entrance and liquid phase thing
Material entrance；
The reaction tube is from top to bottom followed successively by feed zone, contraction section, trunnion section, expansion segment and discharging section, the reaction
The feed zone upper end of pipe is connected with the inner barrel lower end of liquid film generator tube, and the tube wall of reaction tube is provided with absorbing liquid entrance, absorbing liquid
Entrance is located at trunnion section top；
The gas-liquid separation pipe is made up of upper cover plate, gas-liquid separation pipe inner barrel, gas-liquid separation pipe outer cylinder body and bottom plate；
The inner barrel top of gas-liquid separation pipe is connected with the discharging section lower end of reaction tube, and gas-liquid separation pipe is provided with gaseous phase outlet and liquid phase goes out
Mouthful.
In above-mentioned absorbing reaction device, the liquid film generator tube is provided with gas phase entrance and liquid phase material entrance, and the gas phase enters
Mouth is arranged on the upper end of the inner barrel of liquid film generator tube, and the liquid phase material entrance is arranged on the side of the outer cylinder body of liquid film generator tube
On wall.
In above-mentioned absorbing reaction device, the liquid channel is the one kind in triangle, circle, strip or continuous annular space,
Preferably continuous annular space.The gross area of liquid channel is the liquid phase material entrance horizontal stroke of absorbing reaction device on liquid film generator tube inner barrel
1~12 times of sectional area, preferably 3~5 times.
In above-mentioned absorbing reaction device, the absorbing liquid entrance connection liquid phase distributor of the reaction tube, liquid phase distributor is set
On reaction tube center line, absorbing liquid is sprayed from top to bottom, liquid phase distributor is settable 1~10, preferably 4~6.
In above-mentioned absorbing reaction device, the inner barrel bottom of the gas-liquid separation pipe opens up teeth groove, and tooth slot structure is sector
Groove, square teeth groove, triangle teeth groove, preferably lance tooth slot structure, space width are 3mm~20mm, preferably 5mm~8mm；
Its bottom angle is 15~90 °, preferably 30~60 °.
In above-mentioned absorbing reaction device, the gas-liquid separation pipe is provided with gaseous phase outlet and liquid-phase outlet, and gaseous phase outlet is arranged on
On the side wall of the outer cylinder body of gas-liquid separation pipe, and the position of gaseous phase outlet exports higher than the lower end of the inner barrel of gas-liquid separation pipe,
Liquid-phase outlet is located at the bottom of the outer cylinder body of gas-liquid separation pipe.
In device of the present invention using sour gas production solid sodium bicarbonate, the one-level solid-liquid separator, two grades of solid-liquids
Separator includes housing, driving wheel, driven pulley, filter bag, scraper plate and dividing plate；The solid-liquid separator is divided into feed zone, solid-liquid
Disengagement zone and discharge zone, the feed zone are connected with the material inlet of housing upper, and the solid-liquid displacement zone is arranged in housing
Middle part, is made up of driving wheel, driven pulley, scraper plate, filter bag, by being provided with the filtering of uniform sieve aperture between driving wheel and driven pulley
Band connection, the scraper plate is set in inner walls, and blade surface and active wheel surface are tangent relation, and scraper plate and driving wheel it
Between have a certain interval, the scraper plate is used to scrape the crystal on filter bag, and the discharge zone is located at lower housing portion, by dividing plate
It is divided into solid phase discharge zone and liquid phase discharge zone, solid phase discharge zone bottom is provided with solid-phase material outlet, the liquid phase discharge zone
Liquid phase material outlet is provided with, the dividing plate is located at immediately below scraper plate axial location, and dividing plate lower end is fixed on solid-liquid separator housing
There is certain interval bottom, dividing plate upper end with driving wheel.
Compared with prior art, the present invention using sour gas produce solid sodium bicarbonate and sodium hydrosulfide method and
Device has the following advantages that：
1st, the present invention using sour gas production solid sodium bicarbonate method and device in, with sodium carbonate as absorbing liquid, with
Sodium hydroxide solution for washing rush liquor charging, with sodium hydrosulfide be protection liquid, sent to laundry by absorbing reaction, separation of solid and liquid, punching
Wash with four sections of processes of secondary separation of solid and liquid, realize tail gas qualified discharge, and produce the solid carbon for meeting national product quality standard
Sour hydrogen sodium product and sodium hydrosulfide product, improve product economy benefit.
2nd, in the method and device of sour gas production sodium acid carbonate of the present invention, the absorbing reaction process, by using Fig. 2
Described absorbing reaction device, by setting liquid film generator tube, by the isolated liquid phase material sulphur hydrogenation of one-level solid-liquid separator
Sodium partial reflux returns to absorbing reaction device, and liquid film is formed in absorbing reaction device inwall, liquid film reaction tube and reacting field it
Between form separation layer, prevent the H in sour gas2S and CO2Vulcanized sodium, sodium carbonate crystalline particle with absorbing liquid reaction generation adhere to
Reactor wall, while with liquid film as heat-absorbing medium, taking out reaction heat, effectively prevents product solution excessive vaporization, prevents wall
Overheat cause vulcanized sodium, sodium carbonate excessive vaporization and crystallize wall built-up, it is ensured that stable production process, continuous long-term operation.
3rd, the present invention using sour gas production solid sodium bicarbonate method and device compared with prior art, equipment scale
Small, operating cost is few, and operating cost is few, and energy consumption is low, and process is simple, while realizing sour gas qualified discharge, produces two kinds
Chemical products, increase economic efficiency.
Brief description of the drawings
Fig. 1 is the method and device schematic diagram that the present invention produces solid sodium bicarbonate using sour gas.
Fig. 2 is absorbing reaction device structural representation of the present invention.
Fig. 3 is one-level of the present invention, two grades of solid-liquid separator structural representations.
Fig. 4 is one-level of the present invention, two grades of solid-liquid separator left views.
Specific embodiment
As shown in figure 1, the present invention provides the device that a kind of utilization sour gas produces solid sodium bicarbonate, described device includes
Device 3 and two grades of solid-liquid separators 4 are sent in absorbing reaction device 1, one-level solid-liquid separator 2, washing punching；The gas of the absorbing reaction device 1
Phase entrance is connected with sour gas suction line 7, and the liquid-phase outlet of absorbing reaction device 1 is connected with the entrance of one-level solid-liquid separator 2,
The liquid-phase outlet of one-level solid-liquid separator 2 point two-way, wherein the 1st tunnel 17 is connected with the liquid phase material entrance of absorbing reaction device, the 2nd
Road 18 is connected with product storage tank；The solid-phase outlet of one-level solid-liquid separator 2 send the entrance of device 3 to be connected with washing punching, and washing punching is sent
The cleaning solution entrance of device 3 is connected with alkali liquor inlet pipeline 15, and the entrances exported with two grades of solid-liquid separators 4 of device 3 are sent in washing punching
Connection, two grades of liquid-phase outlets of solid-liquid separator 4 are connected with the absorbing liquid entrance of absorbing reaction device 1, two grades of solid-liquid separators 4
Solid-phase outlet obtains sodium bicarbonate solid product.
Fig. 4 is one-level of the present invention, two grades of solid-liquid separator left views.
As shown in Fig. 2 the present invention using sour gas production sodium acid carbonate method and device in, the absorbing reaction device by
Upper, middle and lower segment is constituted, wherein, epimere is liquid film generator tube, and stage casing is reaction tube, and hypomere is gas-liquid separation pipe, the liquid film
Generator tube, reaction tube, gas-liquid separation pipe go to upper and lower and are connected in series, and for same axis is arranged；
The liquid film generator tube is made up of outer cylinder body 34, inner barrel 33, upper annular closure disk 32 and lower annular closure disk 36,
The some liquid channels 35 in level, annular spread are opened up on the inner barrel 33 of liquid film generator tube, liquid film generator tube is provided with gas phase
Entrance 32 and liquid phase material entrance 30, the gas phase entrance 32 are arranged on the upper end of the inner barrel 33 of liquid film generator tube, the liquid
Phase materials entrance 30 is arranged on the side wall of the outer cylinder body 34 of liquid film generator tube, and the liquid channel 35 is triangle, circle, length
One kind in bar shaped or continuous annular space, preferably continuous annular space.
The reaction tube is from top to bottom followed successively by feed zone 39, contraction section 40, trunnion section 41, expansion segment 42 and discharging section
43, the upper end of feed zone 39 of the reaction tube is connected with the lower end of inner barrel 33 of liquid film generator tube, and the tube wall of reaction tube is provided with suction
Liquid entrance 37 is received, absorbing liquid entrance 37 is located at 41 tops of trunnion section, the connection liquid phase distribution of absorbing liquid entrance 37 of the reaction tube
Device 38, liquid phase distributor 38 is arranged on reaction tube center line, and absorbing liquid, liquid phase distributor 38 settable 1 are sprayed from top to bottom
~10, preferably 4~6；
The gas-liquid separation pipe is by upper cover plate 47, gas-liquid separation pipe inner barrel 45, gas-liquid separation pipe outer cylinder body 46 and lower end
Plate 49 is constituted；The top of inner barrel 45 of gas-liquid separation pipe is connected with the lower end of discharging section 43 of reaction tube, and gas-liquid separation pipe is provided with gas
44 and liquid-phase outlet 50 are mutually exported, the bottom of inner barrel 45 for stating gas-liquid separation pipe opens up teeth groove 48, and the structure of teeth groove 48 is sector
Teeth groove, square teeth groove, triangle teeth groove, preferably lance tooth slot structure, space width be 3mm~20mm, preferably 5mm~
8mm；Its bottom angle is 15~90 °, preferably 30~60 °, and the gaseous phase outlet 44 is arranged on the outer cylinder body 46 of gas-liquid separation pipe
Side wall on, and gaseous phase outlet 44 lower end outlet of the position higher than the inner barrel 45 of gas-liquid separation pipe, liquid-phase outlet 50 is located at
The bottom of the outer cylinder body 46 of gas-liquid separation pipe.
As shown in Figure 3, Figure 4, in method and device of the present invention using sour gas production sodium acid carbonate, the one-level solid-liquid
Separator, two grades of solid-liquid separators include housing 57, driving wheel 52, driven pulley 58, filter bag 51, scraper plate 61, dividing plate 53；It is described
Solid-liquid separator is divided into the material inlet pipe 56 of feed zone, solid-liquid displacement zone and discharge zone, the feed zone and the top of housing 57
Connection, the solid-liquid displacement zone is arranged on middle part in housing 57, by driving wheel 52, driven pulley 58, scraper plate 61, the structure of filter bag 51
Into, being connected by being provided with the filter bag 51 of uniform sieve aperture between driving wheel 52 and driven pulley 58, the driving wheel 52 passes through motor
Drive operating.The scraper plate 61 is set on the inwall of housing 57, and the surface of scraper plate 61 and the surface of driving wheel 52 are tangent relation, and scraper plate
There is certain interval between 61 and driving wheel 52, the scraper plate 61 is used to scrape the crystal on filter bag 51, the discharging position
In the bottom of housing 57, by dividing plate, 53 points is solid phase discharge zone 54 and liquid phase discharge zone 60, and the bottom of solid phase discharge zone 54 sets
There is solid-phase material outlet 55, the liquid phase discharge zone 60 is provided with liquid phase material outlet 59, and the dividing plate 53 is located at scraper plate 61
Immediately below axial location, the lower end of dividing plate 53 is fixed on the bottom of solid-liquid separator housing 57, the upper end of dividing plate 53 and driving wheel
52 have certain interval.The material of liquid-phase outlet 50 from absorbing reaction device 1 is the product of absorbing reaction device, its product
Predominantly sodium acid carbonate and NaHS, the generation liquid enter solid-liquid separator by the material inlet pipe 56 of solid-liquid separator,
As the filter bag of driving wheel and the motion of wheel drive surfaces setting is driven together, the NaHS liquid in the generation liquid is through setting
The sieve aperture put on filter bag enters liquid phase discharge zone 60, and absorbing reaction device is respectively enterd as liquid through liquid phase material outlet 59
Film and as product carrying device；Solid crystal remains in filtering V belt translation, is transferred to the scraper plate position being arranged in inner walls
When putting, scraper plate scrapes crystal, and solid crystal enters solid phase discharge zone 54, and entering washing punching through solid-phase material outlet 55 send
Device 3.
With reference to Fig. 1~Fig. 4, in device of the present invention using sour gas production solid sodium bicarbonate, from sour gas entrance
The sour gas of pipeline 7 enters absorbing reaction device 1, after sour gas enters absorbing reaction device 1, with the absorbing liquid conveyed through pipeline 9（Institute
Stating absorbing liquid includes the alkali liquid washing liquid mixed liquor of sodium carbonate liquor and the conveying of pipeline 10 from the conveying of pipeline 8）Absorbed
Reaction, the contraction section of absorbing liquid autoreaction pipe introduces spray, carries out with gas phase as continuous phase, and liquid phase is the gas-liquid mass transfer of dispersed phase
With course of reaction, the NaOH in absorbing liquid is converted into NaHS by the course of reaction, and sodium carbonate is converted into carbonic acid
Hydrogen sodium, reacted purified sour gas passes through the row up to standard of clean gas outlet pipeline 12 through the gaseous phase outlet of absorbing reaction device 1
Put；The reaction solution of absorbing reaction device 1 is connected through pipeline 11 with the material inlet of one-level solid-liquid separator 2, reaction solution
It is the sodium hydrosulfide containing sodium bicarbonate particle, reaction solution enters solid-liquid separator, after realizing separation of solid and liquid, passes through
One-level solid-liquid separator 2 obtains liquid phase material and solid-phase material after separating, and the liquid phase material for obtaining is sodium hydrosulfide, through pipe
Line 16 is conveyed by pump 5, and the 1st tunnel 18 returns to absorbing reaction device 1 by the liquid phase material entrance of absorbing reaction device, when liquid film generator tube
Outer cylinder body in liquid level exceed inner barrel liquid channel liquid level when, inwall of the liquid phase material in liquid film generator tube inner barrel
On be distributed with wall manifold state, form uniform flow liquid film, liquid film forms separation layer between reaction tube and reacting field, prevents
The only H in sour gas2S、CO2Vulcanized sodium, the sodium acid carbonate sodium crystalline particle attachment reaction device inwall generated with absorbing liquid reaction,
Reaction drop is sent in punching simultaneously, prevents wall built-up, while with liquid film as heat-absorbing medium, reaction heat is taken out in time, effectively prevents product molten
Liquid excessive vaporization, prevent wall overheat cause vulcanized sodium, sodium carbonate excessive vaporization and crystallize wall built-up, it is ensured that stable production process,
Continuous long-term operation.If the presence without liquid film, spray droplet can stick to wall, and reaction heat temperature is higher, can produce
Raw evaporation, causes vulcanized sodium to separate out crystallization；In addition, if the presence without liquid film, tiny sodium bicarbonate solid particle can be with
Spray droplet is attached in wall of reactor, and because reaction temperature is higher, particle attachment wall, causes reactor after drop evaporation
Blocking；After liquid film is set, Na can be prevented effectively from2S crystallizes the attachment of wall built-up and sodium bicarbonate particle；2nd tunnel 18 is used as product
Product storage tank can be entered.Described solid-phase material is sodium acid carbonate, and entering washing punching through pipeline 14 send device 3, enters from alkali lye
The sodium hydroxide solution of mouth pipeline 15 provides punching and send power, and is sufficiently mixed with sodium acid carbonate, realizes the washed of sodium acid carbonate
Journey, through washing it is deodorant after after sodium bicarbonate solid by sodium hydroxide solution through pipeline 19 enter two grades of solid-liquid separators 4, point
The liquid phase part 21 obtained after is the NaHS and part sodium hydroxide reaction generation vulcanized sodium of sodium acid carbonate entrainment, by washing
Wash liquid delivery pump 6 and return to absorbing reaction device 1 through the absorbing liquid entrance of absorbing reaction device 1 through pipeline 10, and from absorbing liquid pipeline 8
Sodium carbonate liquor mixing after used as sour gas absorbing liquid, the product solid sodium bicarbonate after separation is transferred out through pipeline 20
Device.So far complete to produce sodium bicarbonate solid product and sodium hydrosulfide product using sour gas and realize that sour gas is purified
The technical process of qualified discharge.
Reaction effect of the invention is illustrated with reference to embodiment, but is not therefore limited the scope of the invention.
Embodiment 1
Using processing method and processing device as shown in Figure 1, with sour gas as raw material, with sodium carbonate as absorbing liquid, with hydrogen-oxygen
Change sodium solution is cleaning solution, is reacted.CO in sour gas2Volume fraction is 7%, H2S volume fractions are 92%, hydro carbons volume integral
Number is 1%.NaOH solution mass concentration is 38%, Na2CO3Concentration of polymer solution is 20%.
In embodiment 1, using absorbing reaction device as shown in Figure 2.In embodiment 1, NaHS product liquid refluxing portion
It is product liquid total amount 40%, absorbing liquid and the liquid-gas ratio of sour gas are 5L/m in absorbing reaction device3.Controlling reaction temperature be 80 DEG C-
Between 85 DEG C, reaction result is shown in Table 1.
Comparative example 1
Same as Example 1, difference is that the absorbing reaction device is conventional retort.
Comparative example 2
Same as Example 1, difference is the liquid phase material that obtains of the one-level solid-liquid separator all as product
Discharge, cancels through liquid phase material entrance into this circulation of absorbing reaction device.
The embodiment of table 1 and comparative example reaction result
Claims (33)
1. a kind of method that utilization sour gas produces solid sodium bicarbonate, methods described includes that absorbing reaction, separation of solid and liquid, punching are sent
Washing, secondary gas solid separation Four processes, methods described are comprised the following steps that：
（1）Sour gas enters absorbing reaction device, and with absorbing liquid sodium carbonate haptoreaction, reacted sour gas is purified rear up to standard
Discharge, the reaction solution for obtaining enters one-level solid-liquid separator, and solid-phase material and liquid phase material are obtained after separation；
（2）Step（1）The liquid phase material part for obtaining returns to absorbing reaction device, part through the liquid phase material entrance of absorbing reaction device
Collected as product and stored；
（3）Step（1）The solid-phase material for obtaining enters washing punching and send device, and washing is contacted with sodium hydroxide solution, is obtained after washing
Cleaning solution enter two grades of solid-liquid separators, isolated solid-phase material is Sodium bicarbonate product, and the liquid phase material for obtaining is made
For absorbing liquid returns to absorbing reaction device；
Wherein, the absorbing reaction device is made up of upper, middle and lower segment, wherein, epimere is liquid film generator tube, and stage casing is reaction tube,
Hypomere is gas-liquid separation pipe, and the liquid film generator tube, reaction tube, gas-liquid separation pipe go to upper and lower and are connected in series, and be same axis
Arrangement；
The liquid film generator tube is made up of outer cylinder body, inner barrel, upper annular closure disk and lower annular closure disk, liquid film generator tube
The some liquid channels in level, annular spread are opened up on inner barrel, liquid film generator tube is provided with gas phase entrance and liquid phase material enters
Mouthful；
The reaction tube is from top to bottom followed successively by feed zone, contraction section, trunnion section, expansion segment and discharging section, the reaction tube
Feed zone upper end is connected with the inner barrel lower end of liquid film generator tube, and the tube wall of reaction tube is provided with absorbing liquid entrance, absorbing liquid entrance
Positioned at trunnion section top；
The gas-liquid separation pipe is made up of upper cover plate, gas-liquid separation pipe inner barrel, gas-liquid separation pipe outer cylinder body and bottom plate；Gas-liquid
The inner barrel top of separating pipe is connected with the discharging section lower end of reaction tube, and gas-liquid separation pipe is provided with gaseous phase outlet and liquid-phase outlet.
2. in accordance with the method for claim 1, it is characterised in that：Step（1）The liquid phase material part for obtaining is through absorbing reaction
The liquid phase material entrance of device returns to absorbing reaction device, and the volume flow of the liquid phase material of the return absorbing reaction device accounts for liquid phase thing
The 30%~70% of material total volumetric flow rate.
3. in accordance with the method for claim 2, it is characterised in that：Step（1）The liquid phase material part for obtaining is through absorbing reaction
The liquid phase material entrance of device returns to absorbing reaction device, and the volume flow of the liquid phase material of the return absorbing reaction device accounts for liquid phase thing
The 40%~50% of material total volumetric flow rate.
4. in accordance with the method for claim 1, it is characterised in that：The mass concentration of the sodium hydroxide solution be 20%~
60%,.
5. in accordance with the method for claim 4, it is characterised in that：The mass concentration of the sodium hydroxide solution be 32%~
40%。
6. in accordance with the method for claim 1, it is characterised in that：The Na2CO3Concentration of polymer solution is 10%~30%.
7. in accordance with the method for claim 6, it is characterised in that：The Na2CO3Concentration of polymer solution is 15%~25%.
8. in accordance with the method for claim 1, it is characterised in that：The reaction temperature of the absorbing reaction device is 70~100 DEG C.
9. in accordance with the method for claim 8, it is characterised in that：The reaction temperature of the absorbing reaction device is 80~95 DEG C.
10. in accordance with the method for claim 1, it is characterised in that：The absorbing liquid is 3~20L/ with the liquid-gas ratio of sour gas
m3。
11. in accordance with the method for claim 10, it is characterised in that：The liquid-gas ratio of the absorbing liquid and sour gas for 5~
10L/m3。
12. in accordance with the method for claim 1, it is characterised in that：The sour gas includes hydrogen sulfide and carbon dioxide.
13. in accordance with the method for claim 1, it is characterised in that：Step（3）Described in sodium hydroxide solution and step（1）
The volume flow ratio of the solid-phase material for obtaining is 3/1~1/1.
14. in accordance with the method for claim 13, it is characterised in that：Step（3）Described in sodium hydroxide solution and step（1）
The volume flow ratio of the solid-phase material for obtaining is 3/2~2/1.
15. in accordance with the method for claim 1, it is characterised in that：The liquid film generator tube is provided with gas phase entrance and liquid phase thing
Material entrance, the gas phase entrance is arranged on the upper end of the inner barrel of liquid film generator tube, and the liquid phase material entrance is arranged on liquid film
On the side wall of the outer cylinder body of generator tube.
16. in accordance with the method for claim 1, it is characterised in that：The liquid channel be triangle, circle, strip or
One kind in continuous annular space.
17. in accordance with the method for claim 16, it is characterised in that：The liquid channel is continuous annular space.
18. methods stated according to claim 1, it is characterised in that：The absorbing liquid entrance connection liquid phase distributor of the reaction tube,
Liquid phase distributor is arranged on reaction tube center line, and absorbing liquid is sprayed from top to bottom, and liquid phase distributor sets 1~10.
19. according to claim 18 method, it is characterised in that：The liquid phase distributor sets 4~6.
20. methods stated according to claim 1, it is characterised in that：The inner barrel bottom of the gas-liquid separation pipe opens up teeth groove, tooth
Slot structure is fan-shaped teeth groove, square teeth groove, triangle teeth groove, and space width is 3mm~20mm, and its bottom angle is 15~90 °.
21. in accordance with the method for claim 20, it is characterised in that：The tooth slot structure is lance tooth slot structure, teeth groove
Width is 5mm~8mm；Its bottom angle is 30~60 °.
22. in accordance with the method for claim 1, it is characterised in that：The gas-liquid separation pipe is provided with gaseous phase outlet and liquid phase goes out
Mouthful, gaseous phase outlet is arranged on the side wall of the outer cylinder body of gas-liquid separation pipe, and the position of gaseous phase outlet is higher than gas-liquid separation pipe
The lower end outlet of inner barrel, liquid-phase outlet is located at the bottom of the outer cylinder body of gas-liquid separation pipe.
23. in accordance with the method for claim 1, it is characterised in that：The one-level solid-liquid separator, two grades of solid-liquid separator bags
Include housing, driving wheel, driven pulley, filter bag, scraper plate and dividing plate；The solid-liquid separator be divided into feed zone, solid-liquid displacement zone and
Discharge zone, the feed zone is connected with the material inlet of housing upper, and the solid-liquid displacement zone is arranged on middle part in housing, by leading
Driving wheel, driven pulley, scraper plate, filter bag are constituted, and are connected by being provided with the filter bag of uniform sieve aperture between driving wheel and driven pulley, institute
State scraper plate to set in inner walls, blade surface is certain to have between tangent relation, and scraper plate and driving wheel with active wheel surface
Gap, the scraper plate is used to scrape the crystal on filter bag, and the discharge zone is located at lower housing portion, solid phase is divided into by dividing plate
Discharge zone and liquid phase discharge zone, solid phase discharge zone bottom are provided with solid-phase material outlet, and the liquid phase discharge zone is provided with liquid phase
Material outlet, the dividing plate is located at immediately below scraper plate axial location, and dividing plate lower end is fixed on solid-liquid separator housing bottom, dividing plate
There is certain interval upper end with driving wheel.
A kind of 24. utilization sour gas produce the device of solid sodium bicarbonate, and described device includes absorbing reaction device, one-level solid-liquid point
Device and two grades of solid-liquid separators are sent from device, washing punching；The gas phase entrance of the absorbing reaction device is connected with sour gas suction line,
The liquid-phase outlet of absorbing reaction device is connected with the entrance of one-level solid-liquid separator, and the liquid-phase outlet of one-level solid-liquid separator is divided to two
Road, wherein the 1st tunnel is connected with the liquid phase material entrance of absorbing reaction device, the 2nd tunnel is connected with product storage tank；One-level solid-liquid separator
Solid-phase outlet with washing punching send the entrance of device be connected, washing rush send the cleaning solution entrance of device to be connected with alkali liquor inlet pipeline, wash
Washing punching send the outlet of device to be connected with the entrance of two grades of solid-liquid separators, two grades of liquid-phase outlets of solid-liquid separator and absorbing reaction device
Absorbing liquid entrance connection；
Wherein described absorbing reaction device is made up of upper, middle and lower segment, wherein, epimere is liquid film generator tube, and stage casing is reaction tube,
Hypomere is gas-liquid separation pipe, and the liquid film generator tube, reaction tube, gas-liquid separation pipe go to upper and lower and are connected in series, and be same axis
Arrangement；
The liquid film generator tube is made up of outer cylinder body, inner barrel, upper annular closure disk and lower annular closure disk, liquid film generator tube
The some liquid channels in level, annular spread are opened up on inner barrel, liquid film generator tube is provided with gas phase entrance and liquid phase material enters
Mouthful；
The reaction tube is from top to bottom followed successively by feed zone, contraction section, trunnion section, expansion segment and discharging section, the reaction tube
Feed zone upper end is connected with the inner barrel lower end of liquid film generator tube, and the tube wall of reaction tube is provided with absorbing liquid entrance, absorbing liquid entrance
Positioned at trunnion section top；
The gas-liquid separation pipe is made up of upper cover plate, gas-liquid separation pipe inner barrel, gas-liquid separation pipe outer cylinder body and bottom plate；Gas-liquid
The inner barrel top of separating pipe is connected with the discharging section lower end of reaction tube, and gas-liquid separation pipe is provided with gaseous phase outlet and liquid-phase outlet.
25. according to the device described in claim 24, it is characterised in that：The liquid film generator tube is provided with gas phase entrance and liquid phase thing
Material entrance, the gas phase entrance is arranged on the upper end of the inner barrel of liquid film generator tube, and the liquid phase material entrance is arranged on liquid film
On the side wall of the outer cylinder body of generator tube.
26. according to the device described in claim 24, it is characterised in that：The liquid channel be triangle, circle, strip or
One kind in continuous annular space.
27. according to the device described in claim 26, it is characterised in that：The liquid channel is continuous annular space.
28. according to the device described in claim 24, it is characterised in that：The absorbing liquid entrance connection liquid phase distribution of the reaction tube
Device, liquid phase distributor is arranged on reaction tube center line, and absorbing liquid is sprayed from top to bottom, and liquid phase distributor sets 1~10.
29. according to the device described in claim 28, it is characterised in that：The liquid phase distributor sets 4~6.
30. according to the device described in claim 24, it is characterised in that：The inner barrel bottom of the gas-liquid separation pipe opens up tooth
Groove, tooth slot structure is fan-shaped teeth groove, square teeth groove, triangle teeth groove, and space width is 3mm~20mm, and its bottom angle is 15
~90 °.
31. according to the device described in claim 30, it is characterised in that：The tooth slot structure is lance tooth slot structure, teeth groove
Width is preferred 5mm~8mm；Its bottom angle is 30~60 °.
32. according to the device described in claim 24, it is characterised in that：The gas-liquid separation pipe is provided with gaseous phase outlet and liquid phase goes out
Mouthful, gaseous phase outlet is arranged on the side wall of the outer cylinder body of gas-liquid separation pipe, and the position of gaseous phase outlet is higher than gas-liquid separation pipe
The lower end outlet of inner barrel, liquid-phase outlet is located at the bottom of the outer cylinder body of gas-liquid separation pipe.
33. want the device described in 24 according to right, it is characterised in that：The one-level solid-liquid separator, two grades of solid-liquid separator bags
Include housing, driving wheel, driven pulley, filter bag, scraper plate and dividing plate；The solid-liquid separator be divided into feed zone, solid-liquid displacement zone and
Discharge zone, the feed zone is connected with the material inlet of housing upper, and the solid-liquid displacement zone is arranged on middle part in housing, by leading
Driving wheel, driven pulley, scraper plate, filter bag are constituted, and are connected by being provided with the filter bag of uniform sieve aperture between driving wheel and driven pulley, institute
State scraper plate to set in inner walls, blade surface is certain to have between tangent relation, and scraper plate and driving wheel with active wheel surface
Gap, the scraper plate is used to scrape the crystal on filter bag, and the discharge zone is located at lower housing portion, solid phase is divided into by dividing plate
Discharge zone and liquid phase discharge zone, solid phase discharge zone bottom are provided with solid-phase material outlet, and the liquid phase discharge zone is provided with liquid phase
Material outlet, the dividing plate is located at immediately below scraper plate axial location, and dividing plate lower end is fixed on solid-liquid separator housing bottom, dividing plate
There is certain interval upper end with driving wheel.
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| CN103588226A (en) * | 2013-11-19 | 2014-02-19 | 中国成达工程有限公司 | Method for preparing sodium carbonate by supplementing CO2 to flue gas |
| CN103691282A (en) * | 2013-12-18 | 2014-04-02 | 安徽工业大学 | Method for preparing sodium carbonate from hydrogen sulfide acid gas |
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| CN103588226A (en) * | 2013-11-19 | 2014-02-19 | 中国成达工程有限公司 | Method for preparing sodium carbonate by supplementing CO2 to flue gas |
| CN103691282A (en) * | 2013-12-18 | 2014-04-02 | 安徽工业大学 | Method for preparing sodium carbonate from hydrogen sulfide acid gas |
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