CN105664693A - Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof - Google Patents
Sulfuric acid tail gas desulphurization apparatus by oxidation process and usage method thereof Download PDFInfo
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- CN105664693A CN105664693A CN201610030051.8A CN201610030051A CN105664693A CN 105664693 A CN105664693 A CN 105664693A CN 201610030051 A CN201610030051 A CN 201610030051A CN 105664693 A CN105664693 A CN 105664693A
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
- B01D53/77—Liquid phase processes
- B01D53/78—Liquid phase processes with gas-liquid contact
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
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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
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/46—Removing components of defined structure
- B01D53/48—Sulfur compounds
- B01D53/50—Sulfur oxides
- B01D53/507—Sulfur oxides by treating the gases with other liquids
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2251/00—Reactants
- B01D2251/10—Oxidants
- B01D2251/106—Peroxides
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2259/00—Type of treatment
- B01D2259/12—Methods and means for introducing reactants
- B01D2259/124—Liquid reactants
Abstract
The invention provides a sulfuric acid tail gas desulphurization apparatus by oxidation process and a usage method thereof, and belongs to the fields of sulfuric acid industry tail gas treatment technology and equipment technology. The apparatus employs a single tower design, and has the advantages of low investment and small land occupation area; a hydrogen peroxide solution is used as a desulfurizer, the desulphurization product is dilute sulfuric acid, the dilute sulfuric acid can be directly used for water supplement in sulfuric acid manufacturing technique, and secondary pollutants are not generated; the desulfurization tower employs a layering design, and desulfurization rate is effectively guaranteed; full automation control is carried out for the whole process, and operation is simple.
Description
Technical field
The invention belongs to the technical field administering sulfuric acid industry tail gas, specifically, relate to the SO in a kind of reduction tail gas in sulphuric acid process2The equipment of content and using method thereof.
Background technology
Sulphuric acid belongs to one of ten big industrial chemicals, and purposes is very extensive, for instance, it is applied to the fields such as phosphate fertilizer, metallurgy, weaving, chemical industry. The amount of China's sulphuric acid output cumulative year after year, and increase in recent years maintains essentially in annual 5%～6%. According to the statistics made by the departments concerned, within 2014, China's sulphuric acid output reaches 8846.35 ten thousand tons, wherein acid production with sulphur technology accounts for the 47% of sulphuric acid total output, metallurgical off-gas acid-making technology accounts for the 30% of sulphuric acid total output, pyrite-based sulfuric acid production technology accounts for the 22% of sulphuric acid total output, and other antacid technology account for the 1% of sulphuric acid total output.
The discharge of sulfuric acid industry exhaust pollutant is attached great importance to by country, has been classified as the key industry of reduction of discharging. New " sulfuric acid industry pollutant emission standard " (GB26132-2010) comes into effect in date March 1 in 2011, and new standard specifies: newly-built enterprise tail gas SO2Emission concentration limits is 400mg/m3, special emission limit is 200mg/m3; Existing enterprise's emission limit is 860mg/m3, from 1 day October in 2013, all enterprises were performed both by newly-built enterprise discharge standard. Sulphuric acid production enterprises is a test by the enforcement of new standard. The enterprise of new standard-required can be reached and few.
Major part sulphuric acid production enterprises is meet national requirements for environmental protection to be faced with the problem of technological transformation, but as antacid integrated artistic technology is carried out modernization overlay, it not only invests relatively big, and needs the transformation that stops production, and this is very unfavorable to the operation of enterprise. Therefore, tail gas SO is reduced by tail gas desulfurization Technology2Concentration of emission, becomes the selection that enterprise is best.
At present, tail gas desulfurization Technology is more, and such as ammonia-acid process, ammonia process, sodium alkali, sodium citrate, limestone-gypsum method, activated coke method etc., wherein most widely used have ammonia-acid process, limestone-gypsum method and activated coke method. Every kind of Technology all has the merits and demerits of its essence: limestone-gypsum method processes sulfuric acid tail gas technique and adopts limestone to be that waste calcium hydroxide is as adsorbent, this kind of technique has that technique is simple, invest little, absorbance advantages of higher, but, it is huge that it produces equipment, waste water yield is big and complicated, recycling is costly, it is easy to cause secondary pollution;Ammonia-acid process processes sulfuric acid tail gas technique and adopts certain density ammonia as adsorbent, and the absorbance of this kind of technique is higher, additionally, adopt the novel dry technique can by tail gas SO2Concentration is reduced to 50mg/m3Hereinafter, but, owing to ammonia price is higher, cause that production cost is higher, additionally, its by-product is sulfur ammonia, sulfur ammonia is difficult to process, and easily decomposes again, it is easy to cause secondary pollution; Activated coke desulfurization technical matters adopts activated coke as adsorbent, and at activated coke internal pair production sulphuric acid, desulfurization degree is higher, but its activated coke needs to carry out at high operating temperatures in regenerative process, and regeneration cost is higher.
Tail gas desulfurization Technology is of a great variety, and every kind of technology all has respective advantage and deficiency. It is mainly reflected in several aspects such as cost of investment, desulfurization degree, secondary pollution, operating cost.
Summary of the invention
It is an object of the present invention to overcome the deficiency existed in above-mentioned existing desulfurization technology, it is provided that a kind of have that flow process is short, capital cost is little, desulfurization degree is high, Automatic Control, a device of oxidizing process sulfuric acid tail gas desulfurization without the generation of secondary refuse.
Another object of the present invention is to overcome the deficiency existed in above-mentioned existing desulfurization technology, it is provided that a kind of have that flow process is short, capital cost is little, desulfurization degree is high, Automatic Control, a using method of device of oxidizing process sulfuric acid tail gas desulfurization without the generation of secondary refuse.
Exemplary embodiment according to the present invention, providing the device of a kind of oxidizing process sulfuric acid tail gas desulfurization, described device is by desulfurizing tower (001), liquid-feeding pump (002), circulating pump (004), waste drains pump (005), tail gas funnel (006), flue gas SO2Concentration analyzer (007), hydrogen peroxide concentration analyser (008), tail gas SO2Concentration analyzer (009), hydrogen peroxide conveyance conduit (010), hydrogen peroxide doctor solution circulating line (011) and devil liquor recovery pipeline (012) composition.
Desulfurizing tower (001) is vertical seal tower, the bottom of its tower body (101) is provided with waste liquid outlet (107), hydrogen peroxide doctor solution outlet (109) and smoke inlet (108), the middle and upper part of tower body (101) is provided with hydrogen peroxide doctor solution entrance (106), the inside of tower body (101) is disposed with nonmetal mist eliminator (102) from top to bottom, Pall ring (104), structured packing (105), wherein, pipe-type acid distributor (103) is dipped in the layer residing for Pall ring (104), the top of tower body (101) is connected with tail gas funnel (006).
Hydrogen peroxide storage tank (003) is connected by the entrance of hydrogen peroxide conveyance conduit (010) with liquid-feeding pump (002), the outlet of liquid-feeding pump (002) is connected by hydrogen peroxide doctor solution entrance (106) of hydrogen peroxide doctor solution circulating line (011) same to tower body (101), the entrance of circulating pump (004) exports (109) by hydrogen peroxide doctor solution circulating line (011) with the hydrogen peroxide doctor solution of tower body (101) and connects, hydrogen peroxide doctor solution entrance (106) connects with the pipe-type acid distributor (103) in the tower body (101) of desulfurizing tower, the outlet of circulating pump (004) is by conduit and hydrogen peroxide doctor solution circulating line (011) parallel communication being directly connected to hydrogen peroxide doctor solution entrance (106), the entrance of waste drains pump (005) is connected with the waste liquid outlet (107) of tower body (101) by devil liquor recovery pipeline (012), and the outlet of waste drains pump (005) connects with sulfuric acid production system by connecting pipeline.
Flue gas SO2Concentration analyzer (007) is arranged on smoke inlet (108) place, and hydrogen peroxide concentration analyser (008) is arranged on devil liquor recovery pipeline (012), tail gas SO2Concentration analyzer (009) is arranged on the sidewall of tail gas funnel (006), flue gas SO2Concentration analyzer (007), hydrogen peroxide concentration analyser (008) and tail gas SO2Concentration analyzer (009) is all connected with computer, and computer is connected with the converter controlling liquid-feeding pump (002) rotating speed, the converter of control circulating pump (004) rotating speed and the starting switch of control waste drains pump (005) respectively.
Exemplary embodiment according to the present invention, wherein, the liquid-feeding pump (002) in described device can adopt frequency conversion membrane pump, for supplying hydrogen peroxide solution desulfurization in desulfurizing tower; Circulating pump (004) can adopt the frequency variable circulating pump of engineering plastics material, circulates for hydrogen peroxide solution; Waste drains pump (005) can adopt engineering plastics material; Hydrogen peroxide storage tank (003) can adopt one-shot forming polyethylene material; Hydrogen peroxide conveyance conduit (010) can adopt 304 stainless steels, and hydrogen peroxide doctor solution circulating line (011) adopts steel lining PO material; Devil liquor recovery pipeline (012) can adopt PPR pipe; Tail gas funnel (006) can adopt FRP material.
In accordance with an alternative illustrative embodiment of the present invention, it is provided that a kind of method of device using oxidizing process sulfuric acid tail gas desulfurization, said method comprising the steps of:
(1) hydrogen peroxide solution that concentration is 27.5% is contained in hydrogen peroxide storage tank (003) and uses as hydrogen peroxide doctor solution, start hydrogen peroxide doctor solution entrance (106) place that hydrogen peroxide solution is promoted to the middle and upper part of the tower body (101) being positioned at desulfurizing tower (001) by liquid-feeding pump (002), spray from tower body (101) middle and upper part to desulfurizing tower;
(2) making flue gas enter in tower body (101) from the smoke inlet (108) of tower body (101) bottom, flue gas and hydrogen peroxide solution are fully contacted in structured packing (105) layer, with by SO in flue gas2Being oxidized to sulphuric acid, sulphuric acid is dissolved in hydrogen peroxide solution and falls into bottom tower body; Flue gas sequentially passes through Pall ring (104) and nonmetal mist eliminator (102) subsequently, makes SO in flue gas2Concentration is reduced to 200mg/m3Hereinafter, SO is deviate from2Flue gas through tail gas funnel (006) discharge;
(3) SO is absorbed2Hydrogen peroxide doctor solution be deposited to the bottom of desulfurizing tower, then pass through hydrogen peroxide doctor solution entrance (106) place that circulating pump (004) rises to tower body (101) middle and upper part along hydrogen peroxide doctor solution circulating line (011) and recycle;
(4) along with what produce constantly carries out, hydrogen peroxide concentration in recycling is gradually lowered, it is sucked out through devil liquor recovery pipeline (012) as waste water utilization waste drains pump (005) when hydrogen peroxide concentration drops to below 0.08%, then squeeze into sulfuric acid production system, carry out moisturizing for sulfur process is produced.
Exemplary embodiment according to the present invention, described method can also include following aspect:
According to flue gas SO2Concentration analyzer (007) analyzes the SO in the flue gas detected2Concentration, by the rotating speed of computer with the Frequency Converter Control liquid-feeding pump (002) being attached thereto, adjusts hydrogen peroxide quantity delivered automatically;
According to tail gas SO2Concentration analyzer (009) detects the SO in tail gas2Concentration, is regulated and controled the rotating speed of circulating pump processed (004), automatically adjusts circulating fluid volume by computer and the converter being attached thereto;
The hydrogen peroxide concentration in circulation fluid is detected according to hydrogen peroxide concentration analyser (008), when the hydrogen peroxide concentration in circulation fluid is lower than 0.08%, the starting switch connected by computer starts waste drains pump (005), waste liquid is discharged, when hydrogen peroxide concentration is higher than 0.5% in circulation fluid, stop waste drains pump (005).
By above description, have the following advantages according to the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment of the present invention and using method thereof;
1, short flow, invests little. Adopting single stripper operation, whole sweetening process completes in a desulfurizing tower, and floor space is little, and the construction period is short, is conducive to corporation improvement.
2, desulfuration efficiency is high. Make full use of the strong oxidizing property of hydrogen peroxide, adopt particular design in desulfurizing tower, improve flue gas and hydrogen peroxide solution contact area and time of contact, it is possible to be effectively ensured desulfurization degree.
3, simple to operate, Automatic Control. According to flue gas, tail gas sulphur dioxide concentration, utilize detecting and controlling system to control hydrogen peroxide solution addition automatically, circulation fluid circulating load, ensure tail gas qualified discharge meanwhile, it is capable to reduce hydrogen peroxide to greatest extent to make consumption, reduce production cost.
4, safety and stability. Desulfurizing tower adopts the design of big porosity, and resistance is little; Sweetening process nodeless mesh produces, it is to avoid the problems such as desulfurizing tower obstruction occur.
5, no waste produces. Desulfurization product is dilute sulfuric acid, is sulfuric acid production process major product, it is possible to directly return sulfuric acid production process, and non-secondary pollution produce are raw, clean environment firendly.
Accompanying drawing explanation
Fig. 1 is the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention,
Fig. 2 is the structural representation of the desulfurizing tower of the exemplary embodiment according to the present invention,
Wherein: 001 is desulfurizing tower, 002 is liquid-feeding pump, 003 is hydrogen peroxide storage tank, 004 is circulating pump, 005 is waste drains pump, 006 is tail gas funnel, 007 is SO2 concentration of flue gas analyser, 008 is hydrogen peroxide concentration analyser, 009 is tail gas SO2 concentration analyzer, 010 is hydrogen peroxide conveyance conduit, 011 is hydrogen peroxide doctor solution circulating line, 012 is devil liquor recovery pipeline, 101 is tower body, 102 is nonmetal mist eliminator, 103 is pipe-type acid distributor, 104 is Pall ring, 105 is structured packing, 106 hydrogen peroxide doctor solution entrances, 107 is waste liquid outlet, 108 is smoke inlet, 109 export for hydrogen peroxide doctor solution.
Detailed description of the invention
The present invention is described in detail hereinafter with reference to accompanying drawing and in conjunction with exemplary embodiment, but, the scope of the present invention is not limited to following example. On the contrary, these embodiments simply schematically show present inventive concept, and the scope of the present invention conveys to those skilled in the art more fully. Wherein, accompanying drawing simply schematically shows, and the size of device is not had limited significance by it.
At present, tail gas desulfurization Technology is more, and such as ammonia-acid process, ammonia process, sodium alkali, sodium citrate, limestone-gypsum method, activated coke method etc., wherein most widely used have ammonia-acid process, limestone-gypsum method and activated coke method. Every kind of Technology all has the merits and demerits of its essence.
Instant invention overcomes the deficiency existed in above-mentioned existing desulfurization technology, it is provided that a kind of have that flow process is short, capital cost is little, desulfurization degree is high, Automatic Control, without the device of oxidizing process sulfuric acid tail gas desulfurization of secondary refuse generation and using method thereof. Wherein, the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention includes desulfurizing tower and auxiliary equipment thereof, employing hydrogen peroxide solution is desulfurizing agent, by the mode that hydrogen peroxide solution and flue gas are inversely spraying, utilize the strong oxidizing property of hydrogen peroxide, by SO in sulphuric acid flue gas in desulfurizing tower2It is oxidized to sulphuric acid, and then reduces the SO of flue gas2Concentration; Utilize flue gas SO2Concentration analyzer, tail gas SO2Sweetening process index is detected by concentration analyzer and hydrogen peroxide concentration analyser constantly, automatically adjusts hydrogen peroxide solution quantity delivered and circulating load, whole technical process is carried out Automatic Control.
Fig. 1 is the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention, and Fig. 2 is the structural representation of the desulfurizing tower of the exemplary embodiment according to the present invention.Hereinafter, device and the using method thereof of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment of the present invention will be more fully described in conjunction with Fig. 1 and Fig. 2. Wherein, the concentration of the material related in entire disclosure is to calculate with mass percent.
The device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention as shown in Figures 1 and 2, according to the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment of the present invention by desulfurizing tower (001), liquid-feeding pump (002), circulating pump (004), waste drains pump (005), tail gas funnel (006), SO2 concentration of flue gas analyser (007), hydrogen peroxide concentration analyser (008), tail gas SO2Concentration analyzer (009), hydrogen peroxide conveyance conduit (010), hydrogen peroxide doctor solution circulating line (011) and devil liquor recovery pipeline (012) composition, wherein, desulfurizing tower (001) is vertical seal tower, its tower body (101) bottom is provided with waste liquid outlet (107), tower body (101) bottom is positioned at the appropriate location, top of waste liquid outlet (107) and is provided with hydrogen peroxide doctor solution outlet (109), tower body (101) bottom is additionally provided with smoke inlet (108), tower body (101) middle and upper part is provided with hydrogen peroxide doctor solution entrance (106), tower body (101) is internal is sequentially provided with nonmetal mist eliminator (102) from top to bottom, Pall ring (104), structured packing (105) is (such as, nonmetal structured packing) and be evenly distributed on by different level in desulfurizing tower, pipe-type acid distributor (103) is immersed in Pall ring (104) layer, tower body (101) top is connected with tail gas funnel (006), hydrogen peroxide storage tank (003) is connected by the entrance of hydrogen peroxide conveyance conduit (010) same to liquid-feeding pump (002), the outlet of liquid-feeding pump (002) is connected by hydrogen peroxide doctor solution entrance (106) of hydrogen peroxide doctor solution circulating line (011) same to tower body (101), the entrance of circulating pump (004) is connected by hydrogen peroxide doctor solution outlet (109) of hydrogen peroxide doctor solution circulating line (011) same to tower body (101), hydrogen peroxide doctor solution entrance (106) connects with the tower body of desulfurizing tower (101) interior pipe-type acid distributor (103), the outlet of circulating pump (004) is by conduit and hydrogen peroxide doctor solution circulating line (011) parallel communication being directly connected to hydrogen peroxide doctor solution entrance (106), the entrance of waste drains pump (005) is connected by the waste liquid outlet (107) of devil liquor recovery pipeline (012) same to tower body (101), and the outlet of waste drains pump (005) is connected with sulfuric acid production system by connecting pipeline, SO2 concentration of flue gas analyser (007) is arranged on smoke inlet (108) place, and hydrogen peroxide concentration analyser (008) is arranged on devil liquor recovery pipeline (012), tail gas SO2Concentration analyzer (009) is arranged on the sidewall of tail gas funnel (006), SO2 concentration of flue gas analyser (007), hydrogen peroxide concentration analyser (008) and tail gas SO2Concentration analyzer (009) is all connected with computer, and computer is connected with the converter controlling liquid-feeding pump (002) rotating speed, the converter of control circulating pump (004) rotating speed and the starting switch of control waste drains pump (005) respectively.
It addition, in said apparatus, liquid-feeding pump (002) can adopt frequency conversion membrane pump, for supplying hydrogen peroxide solution desulfurization in desulfurizing tower; Circulating pump (004) can adopt the frequency variable circulating pump of engineering plastics material, circulates for hydrogen peroxide solution; Waste drains pump (005) can adopt engineering plastics material, it is prevented that diluted acid corrodes; Hydrogen peroxide storage tank (003) can adopt one-shot forming polyethylene material; Hydrogen peroxide conveyance conduit (010) can adopt 304 stainless steels, and hydrogen peroxide doctor solution circulating line (011) can adopt steel lining PO material;Devil liquor recovery pipeline (012) can adopt PPR pipe; Tail gas funnel (006) adopts FRP material, it is prevented that flue gas corrosion.
Above, it is described in conjunction with the accompanying the device of the oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention, by utilizing this device that tail gas carries out de-SO2, it is possible to have that flow process is short, capital cost is little, desulfurization degree is high, Automatic Control, without advantages such as secondary refuse generations.
Hereinafter, the method that the device of the oxidizing process sulfuric acid tail gas desulfurization that use exemplary embodiment according to the present invention will be described in detail in conjunction with Fig. 1 and Fig. 2.
The method of the device using above-mentioned oxidizing process sulfuric acid tail gas desulfurization of the exemplary embodiment according to the present invention may comprise steps of:
(1) hydrogen peroxide solution that concentration is 27.5% is left in hydrogen peroxide storage tank (003) and use as hydrogen peroxide doctor solution, start liquid-feeding pump (002) and hydrogen peroxide solution is risen to hydrogen peroxide doctor solution entrance (106) place being positioned at desulfurizing tower (001) tower body (101) middle and upper part, spray from tower body (101) middle and upper part to desulfurizing tower;
(2) allowing flue gas enter in tower body (101) from the smoke inlet (108) of tower body (101) bottom, flue gas and hydrogen peroxide solution are fully contacted in structured packing (105) layer, by SO in flue gas2Being oxidized to sulphuric acid, sulphuric acid is dissolved in hydrogen peroxide solution and falls into bottom tower body; Flue gas sequentially passes through Pall ring (104), nonmetal mist eliminator (102), SO in flue gas2Concentration is reduced to 200mg/m3Hereinafter, the flue gas up to standard deviating from SO2 is arranged outward through tail gas funnel (006);
(3) allow the hydrogen peroxide doctor solution after absorbing SO2 be deposited to bottom desulfurizing tower, again through circulating pump (004), hydrogen peroxide doctor solution entrance (106) place that the hydrogen peroxide doctor solution bottom desulfurizing tower rises to tower body (101) middle and upper part along hydrogen peroxide doctor solution circulating line (011) is recycled;
(4) along with what produce constantly carries out, hydrogen peroxide concentration in recycling is gradually lowered, when hydrogen peroxide concentration drops to below 0.08%, it is referred to as " waste liquid ", utilize waste drains pump (005) that after devil liquor recovery pipeline (012) sucking-off, waste liquid is squeezed into sulfuric acid production system, produce moisturizing for sulfur process;
(5) when using: according to flue gas SO2Concentration analyzer (007) is analyzed and is detected SO in flue gas2Concentration, by the rotating speed of computer with the Frequency Converter Control liquid-feeding pump (002) being attached thereto, adjusts hydrogen peroxide quantity delivered automatically;
(6) according to tail gas SO2Concentration analyzer (009) detects SO2 concentration in tail gas, is regulated and controled the rotating speed of circulating pump processed (004) by computer and the converter being attached thereto, automatically adjusts circulating fluid volume;
(7) hydrogen peroxide concentration in circulation fluid is detected according to hydrogen peroxide concentration analyser (008), when in circulation fluid, hydrogen peroxide concentration is lower than 0.08%, the starting switch connected by computer starts waste drains pump (005), waste liquid is discharged, when in circulation fluid, hydrogen peroxide concentration is higher than 0.5%, stop waste drains pump (005), reach Automatic Control.
Method above by the device of the use oxidizing process sulfuric acid tail gas desulfurization describing the exemplary embodiment according to the present invention in conjunction with Fig. 1 and Fig. 2 in detail; wherein; schematically illustrate the concrete example of the present invention, but, protection scope of the present invention is not limited to this.
Hereinafter, the concrete example of the present invention is described seeing figures.1.and.2.
Example:
SO after sulfate system absorbs2Concentration is 400～4000mg/m3Flue gas enter tower body (101) from the smoke inlet (108) of desulfurizing tower (001) tower body (101) bottom, by the underbalance effect of tail gas funnel (006) to tower body (101) top loss;Flue gas is fully contacted with the hydrogen peroxide solution sprayed out from pipe-type acid distributor (103) in the process through structured packing (105), it is big that structured packing (105) has surface area, resistance is little, finely dispersed feature, flue gas and hydrogen peroxide solution contact area is made to be greatly increased, can effectively ensure that desulfurization degree, flue gas enters Pall ring (104) layer after hydrogen peroxide desulfurization, utilize the gas-liquid separation principle of Pall ring (104), water in flue gas is separated with hydrogen peroxide, flue gas enters back into nonmetal mist eliminator (102), go out the moisture content in flue gas further, remove acid mist in flue gas simultaneously, SO in flue gas2Concentration reaches 200mg/m3Hereinafter, tail gas funnel (006) qualified discharge of FRP material is entered. Carry out by the following method during concrete operations:
(1) hydrogen peroxide solution that concentration is 27.5% is left in the hydrogen peroxide storage tank (003) of one-shot forming polyethylene material, utilize frequency conversion diaphragm liquid-feeding pump (002) that from hydrogen peroxide doctor solution entrance (106), hydrogen peroxide solution is squeezed into pipe-type acid distributor (103) by the pipeline of 304 stainless steels, utilize the uniform feature of pipe-type acid distributor (103) separatory, hydrogen peroxide solution is evenly spread to inside desulfurizing tower, it is internal that pipe-type acid distributor (103) is imbedded in Pall ring (104), can effectively prevent hydrogen peroxide from overflowing with flue gas and dissipate;
(2) flue gas is allowed to enter in tower body (101) from the smoke inlet (108) of tower body (101) bottom, hydrogen peroxide is entered structured packing (105) by action of gravity, in structured packing (105), complete oxidation reaction with flue gas and generate sulphuric acid, be then deposited to tower body (101) bottom;
(3) for improving hydrogen peroxide utilization rate, tower body (101) bottom cycle liquid is promoted to hydrogen peroxide doctor solution entrance (106) from hydrogen peroxide doctor solution outlet (109) by the circulating pump (004) again through engineering plastics material, recycles; Hydrogen peroxide doctor solution circulating line (011) adopts steel lining PO material pipeline, it is prevented that hydrogen peroxide circulation pipe (011) is corroded by diluted acid and hydrogen peroxide.
(4) it is gradually lowered along with production is circulated in liquid hydrogen peroxide concentration, when in circulation fluid, hydrogen peroxide concentration is reduced to 0.08-0.5%, now in circulation fluid, sulfuric acid concentration can reach 5%-10%, utilize waste drains pump (005) that the diluted acid waste liquid of tower body (101) bottom deposit is got to sulfuric acid production system, for gas washing in SA production moisturizing, devil liquor recovery pipeline adopts PPR pipe, it is prevented that diluted acid corrodes.
(5) by flue gas SO2Concentration analyzer (007) detects SO in flue gas2Concentration, utilizes Frequency Converter Control liquid-feeding pump (002) rotating speed, automatically adjusts hydrogen peroxide quantity delivered;
(6) by utilizing tail gas SO2Concentration analyzer (009) detects SO in tail gas2Concentration, utilizes converter regulation and control circulating pump processed (004) rotating speed, automatically adjusts circulating fluid volume;
(7) hydrogen peroxide concentration in circulation fluid is detected by hydrogen peroxide concentration analyser (008), when in circulation fluid, hydrogen peroxide concentration is lower than 0.08%, automatically start waste drains pump to be discharged by waste liquid, when in circulation fluid, hydrogen peroxide concentration is higher than 0.5%, it is automatically stopped waste drains pump, reaches Automatic Control.
Claims (4)
1. the device of an oxidizing process sulfuric acid tail gas desulfurization, it is characterized in that, described device is by desulfurizing tower (001), liquid-feeding pump (002), circulating pump (004), waste drains pump (005), tail gas funnel (006), flue gas SO2Concentration analyzer (007), hydrogen peroxide concentration analyser (008), tail gas SO2Concentration analyzer (009), hydrogen peroxide conveyance conduit (010), hydrogen peroxide doctor solution circulating line (011) and devil liquor recovery pipeline (012) composition;
Desulfurizing tower (001) is vertical seal tower, the bottom of its tower body (101) is provided with waste liquid outlet (107), hydrogen peroxide doctor solution outlet (109) and smoke inlet (108), the middle and upper part of tower body (101) is provided with hydrogen peroxide doctor solution entrance (106), the inside of tower body (101) is disposed with nonmetal mist eliminator (102) from top to bottom, Pall ring (104), structured packing (105), wherein, pipe-type acid distributor (103) is dipped in the layer residing for Pall ring (104), the top of tower body (101) is connected with tail gas funnel (006),
Hydrogen peroxide storage tank (003) is connected by the entrance of hydrogen peroxide conveyance conduit (010) with liquid-feeding pump (002), the outlet of liquid-feeding pump (002) is connected by hydrogen peroxide doctor solution entrance (106) of hydrogen peroxide doctor solution circulating line (011) same to tower body (101), the entrance of circulating pump (004) exports (109) by hydrogen peroxide doctor solution circulating line (011) with the hydrogen peroxide doctor solution of tower body (101) and connects, hydrogen peroxide doctor solution entrance (106) connects with the pipe-type acid distributor (103) in the tower body (101) of desulfurizing tower, the outlet of circulating pump (004) is by conduit and hydrogen peroxide doctor solution circulating line (011) parallel communication being directly connected to hydrogen peroxide doctor solution entrance (106), the entrance of waste drains pump (005) is connected with the waste liquid outlet (107) of tower body (101) by devil liquor recovery pipeline (012), and the outlet of waste drains pump (005) connects with sulfuric acid production system by connecting pipeline,
Flue gas SO2Concentration analyzer (007) is arranged on smoke inlet (108) place, and hydrogen peroxide concentration analyser (008) is arranged on devil liquor recovery pipeline (012), tail gas SO2Concentration analyzer (009) is arranged on the sidewall of tail gas funnel (006), flue gas SO2Concentration analyzer (007), hydrogen peroxide concentration analyser (008) and tail gas SO2Concentration analyzer (009) is all connected with computer, and computer is connected with the converter controlling liquid-feeding pump (002) rotating speed, the converter of control circulating pump (004) rotating speed and the starting switch of control waste drains pump (005) respectively.
2. device according to claim 1, wherein, the liquid-feeding pump (002) in described device adopts frequency conversion membrane pump, for supplying hydrogen peroxide solution desulfurization in desulfurizing tower; Circulating pump (004) adopts the frequency variable circulating pump of engineering plastics material, circulates for hydrogen peroxide solution; Waste drains pump (005) adopts engineering plastics material; Hydrogen peroxide storage tank (003) adopts one-shot forming polyethylene material; Hydrogen peroxide conveyance conduit (010) adopts 304 stainless steels, and hydrogen peroxide doctor solution circulating line (011) adopts steel lining PO material; Devil liquor recovery pipeline (012) adopts PPR pipe; Tail gas funnel (006) adopts FRP material.
3. the method for the device using oxidizing process sulfuric acid tail gas desulfurization, it is characterised in that said method comprising the steps of:
(1) hydrogen peroxide solution that concentration is 27.5% is contained in hydrogen peroxide storage tank (003) and uses as hydrogen peroxide doctor solution, start hydrogen peroxide doctor solution entrance (106) place that hydrogen peroxide solution is promoted to the middle and upper part of the tower body (101) being positioned at desulfurizing tower (001) by liquid-feeding pump (002), spray from tower body (101) middle and upper part to desulfurizing tower;
(2) making flue gas enter in tower body (101) from the smoke inlet (108) of tower body (101) bottom, flue gas and hydrogen peroxide solution are fully contacted in structured packing (105) layer, with by SO in flue gas2Being oxidized to sulphuric acid, sulphuric acid is dissolved in hydrogen peroxide solution and falls into bottom tower body; Flue gas sequentially passes through Pall ring (104) and nonmetal mist eliminator (102) subsequently, makes SO in flue gas2Concentration is reduced to 200mg/m3Hereinafter, SO is deviate from2Flue gas through tail gas funnel (006) discharge;
(3) SO is absorbed2Hydrogen peroxide doctor solution be deposited to the bottom of desulfurizing tower, then pass through hydrogen peroxide doctor solution entrance (106) place that circulating pump (004) rises to tower body (101) middle and upper part along hydrogen peroxide doctor solution circulating line (011) and recycle;
(4) along with what produce constantly carries out, hydrogen peroxide concentration in recycling is gradually lowered, it is sucked out through devil liquor recovery pipeline (012) as waste water utilization waste drains pump (005) when hydrogen peroxide concentration drops to below 0.08%, then squeeze into sulfuric acid production system, carry out moisturizing for sulfur process is produced.
4. method as claimed in claim 3, wherein, described method also includes:
According to flue gas SO2Concentration analyzer (007) analyzes the SO in the flue gas detected2Concentration, by the rotating speed of computer with the Frequency Converter Control liquid-feeding pump (002) being attached thereto, adjusts hydrogen peroxide quantity delivered automatically;
According to tail gas SO2Concentration analyzer (009) detects the SO in tail gas2Concentration, is regulated and controled the rotating speed of circulating pump processed (004), automatically adjusts circulating fluid volume by computer and the converter being attached thereto;
The hydrogen peroxide concentration in circulation fluid is detected according to hydrogen peroxide concentration analyser (008), when the hydrogen peroxide concentration in circulation fluid is lower than 0.08%, the starting switch connected by computer starts waste drains pump (005), waste liquid is discharged, when hydrogen peroxide concentration is higher than 0.5% in circulation fluid, stop waste drains pump (005).
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051158A (en) * | 2017-04-27 | 2017-08-18 | 临沂圣大环保工程有限公司 | A kind of hydrogen peroxide desulfurizer handled for sulfuric acid tail gas and method |
| CN107469602A (en) * | 2017-08-07 | 2017-12-15 | 山东胜星化工有限公司 | One kind recovery sulfur-containing tail gas qualified discharge technology |
| CN107983091A (en) * | 2017-12-14 | 2018-05-04 | 四川龙蟒钛业股份有限公司 | A kind of method of acid hydrolysis tail gas in titanium white waste acid processing sulfuric acid method titanium pigment production |
| CN112107983A (en) * | 2020-08-17 | 2020-12-22 | 南京汇仁化工设备有限公司 | Hydrogen peroxide desulfurization process |
| CN114146548A (en) * | 2021-11-15 | 2022-03-08 | 南通山剑石墨设备有限公司 | Waste gas desulfurization and denitrification system |
| CN114408870A (en) * | 2022-01-21 | 2022-04-29 | 北京北科环境工程有限公司 | Regeneration method of copper sulfide waste agent |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144849A (en) * | 2001-11-15 | 2003-05-20 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurization system and method therefor |
| CN104548898A (en) * | 2014-11-27 | 2015-04-29 | 南京澄天环境科学研究院有限公司 | Method and device for combining deep emission reduction of sulfur-containing tail gas |
| CN204619726U (en) * | 2015-05-11 | 2015-09-09 | 南京澄天环境科学研究院有限公司 | Copper making ring collection flue gas desulfur device |
| CN204684940U (en) * | 2015-06-10 | 2015-10-07 | 湖北蔚天环保科技有限公司 | A kind of hydrogen peroxide hollow-spraying-tower desulphurization system |
-
2016
- 2016-01-15 CN CN201610030051.8A patent/CN105664693A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2003144849A (en) * | 2001-11-15 | 2003-05-20 | Mitsubishi Heavy Ind Ltd | Exhaust gas desulfurization system and method therefor |
| CN104548898A (en) * | 2014-11-27 | 2015-04-29 | 南京澄天环境科学研究院有限公司 | Method and device for combining deep emission reduction of sulfur-containing tail gas |
| CN204619726U (en) * | 2015-05-11 | 2015-09-09 | 南京澄天环境科学研究院有限公司 | Copper making ring collection flue gas desulfur device |
| CN204684940U (en) * | 2015-06-10 | 2015-10-07 | 湖北蔚天环保科技有限公司 | A kind of hydrogen peroxide hollow-spraying-tower desulphurization system |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107051158A (en) * | 2017-04-27 | 2017-08-18 | 临沂圣大环保工程有限公司 | A kind of hydrogen peroxide desulfurizer handled for sulfuric acid tail gas and method |
| CN107469602A (en) * | 2017-08-07 | 2017-12-15 | 山东胜星化工有限公司 | One kind recovery sulfur-containing tail gas qualified discharge technology |
| CN107983091A (en) * | 2017-12-14 | 2018-05-04 | 四川龙蟒钛业股份有限公司 | A kind of method of acid hydrolysis tail gas in titanium white waste acid processing sulfuric acid method titanium pigment production |
| CN112107983A (en) * | 2020-08-17 | 2020-12-22 | 南京汇仁化工设备有限公司 | Hydrogen peroxide desulfurization process |
| CN114146548A (en) * | 2021-11-15 | 2022-03-08 | 南通山剑石墨设备有限公司 | Waste gas desulfurization and denitrification system |
| CN114146548B (en) * | 2021-11-15 | 2023-12-29 | 南通山剑石墨设备有限公司 | Exhaust gas desulfurization and denitrification system |
| CN114408870A (en) * | 2022-01-21 | 2022-04-29 | 北京北科环境工程有限公司 | Regeneration method of copper sulfide waste agent |
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