CN210171207U - Desulfurization acid making system - Google Patents
Desulfurization acid making system Download PDFInfo
- Publication number
- CN210171207U CN210171207U CN201920189302.6U CN201920189302U CN210171207U CN 210171207 U CN210171207 U CN 210171207U CN 201920189302 U CN201920189302 U CN 201920189302U CN 210171207 U CN210171207 U CN 210171207U
- Authority
- CN
- China
- Prior art keywords
- desulfurization
- acid
- absorption tower
- flue
- liquid
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 238000006477 desulfuration reaction Methods 0.000 title claims abstract description 79
- 230000023556 desulfurization Effects 0.000 title claims abstract description 79
- 239000002253 acid Substances 0.000 title claims abstract description 60
- 239000007788 liquid Substances 0.000 claims abstract description 79
- 238000010521 absorption reaction Methods 0.000 claims abstract description 45
- 238000010791 quenching Methods 0.000 claims abstract description 45
- 230000000171 quenching effect Effects 0.000 claims abstract description 45
- MHAJPDPJQMAIIY-UHFFFAOYSA-N Hydrogen peroxide Chemical compound OO MHAJPDPJQMAIIY-UHFFFAOYSA-N 0.000 claims abstract description 42
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims abstract description 37
- 239000007921 spray Substances 0.000 claims abstract description 28
- 239000002002 slurry Substances 0.000 claims abstract description 26
- 238000005507 spraying Methods 0.000 claims abstract description 24
- 238000003860 storage Methods 0.000 claims abstract description 24
- 239000000945 filler Substances 0.000 claims abstract description 20
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 18
- 239000002912 waste gas Substances 0.000 claims abstract description 16
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 230000002378 acidificating effect Effects 0.000 claims abstract description 7
- 229910052717 sulfur Inorganic materials 0.000 claims abstract description 7
- 239000011593 sulfur Substances 0.000 claims abstract description 7
- 239000000835 fiber Substances 0.000 claims description 34
- 229910000619 316 stainless steel Inorganic materials 0.000 claims description 6
- 230000000903 blocking effect Effects 0.000 claims description 6
- 238000012856 packing Methods 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 206010022000 influenza Diseases 0.000 claims description 5
- 239000007791 liquid phase Substances 0.000 claims description 4
- 229920000049 Carbon (fiber) Polymers 0.000 claims description 3
- 229910052581 Si3N4 Inorganic materials 0.000 claims description 3
- 239000004917 carbon fiber Substances 0.000 claims description 3
- 239000011152 fibreglass Substances 0.000 claims description 3
- 239000003365 glass fiber Substances 0.000 claims description 3
- 239000011347 resin Substances 0.000 claims description 3
- 229920005989 resin Polymers 0.000 claims description 3
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 3
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 3
- HQVNEWCFYHHQES-UHFFFAOYSA-N silicon nitride Chemical compound N12[Si]34N5[Si]62N3[Si]51N64 HQVNEWCFYHHQES-UHFFFAOYSA-N 0.000 claims description 3
- 229910001220 stainless steel Inorganic materials 0.000 claims description 3
- 239000010935 stainless steel Substances 0.000 claims description 3
- 238000004804 winding Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 claims 5
- RAHZWNYVWXNFOC-UHFFFAOYSA-N Sulphur dioxide Chemical compound O=S=O RAHZWNYVWXNFOC-UHFFFAOYSA-N 0.000 abstract description 22
- 238000000034 method Methods 0.000 abstract description 19
- 239000002699 waste material Substances 0.000 abstract description 11
- 238000001816 cooling Methods 0.000 abstract description 9
- UGFAIRIUMAVXCW-UHFFFAOYSA-N Carbon monoxide Chemical compound [O+]#[C-] UGFAIRIUMAVXCW-UHFFFAOYSA-N 0.000 description 16
- 208000028659 discharge Diseases 0.000 description 16
- 239000003546 flue gas Substances 0.000 description 16
- 239000003595 mist Substances 0.000 description 13
- 239000007789 gas Substances 0.000 description 11
- 239000002245 particle Substances 0.000 description 6
- 239000003344 environmental pollutant Substances 0.000 description 5
- 231100000719 pollutant Toxicity 0.000 description 5
- QGZKDVFQNNGYKY-UHFFFAOYSA-N Ammonia Chemical compound N QGZKDVFQNNGYKY-UHFFFAOYSA-N 0.000 description 4
- 230000008901 benefit Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000005864 Sulphur Substances 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 230000005484 gravity Effects 0.000 description 3
- 230000003647 oxidation Effects 0.000 description 3
- 238000007254 oxidation reaction Methods 0.000 description 3
- 239000000779 smoke Substances 0.000 description 3
- 239000000126 substance Substances 0.000 description 3
- 235000011149 sulphuric acid Nutrition 0.000 description 3
- 239000001117 sulphuric acid Substances 0.000 description 3
- 230000001502 supplementing effect Effects 0.000 description 3
- 238000003723 Smelting Methods 0.000 description 2
- 229910021529 ammonia Inorganic materials 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 229910017053 inorganic salt Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- KIUKXJAPPMFGSW-DNGZLQJQSA-N (2S,3S,4S,5R,6R)-6-[(2S,3R,4R,5S,6R)-3-Acetamido-2-[(2S,3S,4R,5R,6R)-6-[(2R,3R,4R,5S,6R)-3-acetamido-2,5-dihydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-2-carboxy-4,5-dihydroxyoxan-3-yl]oxy-5-hydroxy-6-(hydroxymethyl)oxan-4-yl]oxy-3,4,5-trihydroxyoxane-2-carboxylic acid Chemical compound CC(=O)N[C@H]1[C@H](O)O[C@H](CO)[C@@H](O)[C@@H]1O[C@H]1[C@H](O)[C@@H](O)[C@H](O[C@H]2[C@@H]([C@@H](O[C@H]3[C@@H]([C@@H](O)[C@H](O)[C@H](O3)C(O)=O)O)[C@H](O)[C@@H](CO)O2)NC(C)=O)[C@@H](C(O)=O)O1 KIUKXJAPPMFGSW-DNGZLQJQSA-N 0.000 description 1
- 235000008733 Citrus aurantifolia Nutrition 0.000 description 1
- RWSOTUBLDIXVET-UHFFFAOYSA-N Dihydrogen sulfide Chemical compound S RWSOTUBLDIXVET-UHFFFAOYSA-N 0.000 description 1
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 1
- 235000011941 Tilia x europaea Nutrition 0.000 description 1
- 238000005273 aeration Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- BIGPRXCJEDHCLP-UHFFFAOYSA-N ammonium bisulfate Chemical compound [NH4+].OS([O-])(=O)=O BIGPRXCJEDHCLP-UHFFFAOYSA-N 0.000 description 1
- 150000003863 ammonium salts Chemical class 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000006229 carbon black Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000003795 desorption Methods 0.000 description 1
- 239000003814 drug Substances 0.000 description 1
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 238000011010 flushing procedure Methods 0.000 description 1
- 239000006260 foam Substances 0.000 description 1
- 239000003517 fume Substances 0.000 description 1
- 229910052602 gypsum Inorganic materials 0.000 description 1
- 239000010440 gypsum Substances 0.000 description 1
- 229920002674 hyaluronan Polymers 0.000 description 1
- 229960003160 hyaluronic acid Drugs 0.000 description 1
- 229910000041 hydrogen chloride Inorganic materials 0.000 description 1
- IXCSERBJSXMMFS-UHFFFAOYSA-N hydrogen chloride Substances Cl.Cl IXCSERBJSXMMFS-UHFFFAOYSA-N 0.000 description 1
- 229910000037 hydrogen sulfide Inorganic materials 0.000 description 1
- 239000002440 industrial waste Substances 0.000 description 1
- 239000004571 lime Substances 0.000 description 1
- QSHDDOUJBYECFT-UHFFFAOYSA-N mercury Chemical compound [Hg] QSHDDOUJBYECFT-UHFFFAOYSA-N 0.000 description 1
- 229910052753 mercury Inorganic materials 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 239000003208 petroleum Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000002035 prolonged effect Effects 0.000 description 1
- 238000004537 pulping Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 150000003839 salts Chemical class 0.000 description 1
- 239000000523 sample Substances 0.000 description 1
- 238000004062 sedimentation Methods 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000010865 sewage Substances 0.000 description 1
- 239000000725 suspension Substances 0.000 description 1
- 238000011144 upstream manufacturing Methods 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Images
Landscapes
- Treating Waste Gases (AREA)
Abstract
The utility model discloses a desulfurization acid-making system, which comprises a quenching flue, a desulfurization spray head, a reverse-spraying circulating pump, an absorption tower, a baffle plate demister, a liquid distributor, a filler, an acid liquid storage tank, an acid liquid pump, a hydrogen peroxide storage tank and a hydrogen peroxide metering pump; the high-temperature sulfur-containing acidic waste gas enters a quenching flue to contact with a large amount of circulating slurry for quenching and cooling to reach a water saturation state, sulfur dioxide absorbed by spraying of a desulfurization nozzle is dissolved and then continuously reacts with added hydrogen peroxide solution to form sulfuric acid solution, the sulfuric acid solution flows into an absorption tower, a circulating slurry pool is formed at the bottom of the absorption tower, the sulfuric acid solution is discharged and reused after the concentration of the sulfuric acid solution reaches a certain degree, and the waste gas in the absorption tower is reprocessed through a filler and a baffle plate demister to reach the emission standard and then is discharged; the utility model provides a desulfurization system acid system can realize high-efficient desulfurization, process flow is simple, can not produce the waste liquid, and can become usable resource with the waste liquid, has realized changing waste into valuables.
Description
Technical Field
The utility model relates to a wet flue gas desulfurization of industry handles technical field, especially relates to a desulfurization system sour system.
Background
With the increasingly strict national and local control of pollutant emission indexes of industrial waste gas, the treatment problem of high-salt wastewater pollutants in the domestic petroleum and petrochemical industry, metal smelting industry and the like is more and more prominent, and high-temperature flue gas containing pollutants such as sulfur dioxide and the like can be generated in the production processes of chemical plants, smelting plants and the like. At present, a large number of flue gas desulfurization technical methods are available in China and are widely applied, but desulfurization facilities of various methods more or less display application limiting factors such as huge investment, land occupation, maintenance and the like, for example, dry desulfurization (such as a circulating fluidized bed, a rotary spraying method and the like) has the problems of low treatment efficiency, high energy consumption, low medicament utilization rate and the like, and semi-dry desulfurization (such as a lime gypsum method and the like) has the problems of complex pulping, low treatment efficiency and the like. At present, more than 70 percent of treatment devices installed in internal chemical plants in China, particularly in chemical and refining enterprises, adopt a wet treatment method, ammonia desulphurization has the risk of ammonia escape, ammonium salt particles such as ammonium bisulfate and the like which are difficult to capture are easily formed in smoke, and the particles are adhered to each part of the device and pipelines to cause blockage; if the smoke is discharged out of the device, serious secondary pollution is caused. The sodium-alkali wet desulphurization efficiency is high, but the common smoke discharge easily causes white rain or colored rain, the fog drops dissolve part of inorganic salt and fall to the vicinity of a device or a farmland, which causes troubles and harm for production and life, in addition, the wet desulphurization can bring about the problem of waste liquid discharge, even if a liquid discharge treatment unit is configured, a clarifier or a sedimentation tank system, an oxidation tank or an aeration tank are arranged to specially treat TSS, COD and the like, and high-concentration inorganic salt wastewater is difficult to directly discharge, so the treatment burden of a sewage treatment plant is increased. Therefore, a desulfurization technology with high efficiency, simplified process flow, no waste liquid generation and high return is needed.
Disclosure of Invention
The utility model aims at providing a desulfurization system of making acid to solve the problem that above-mentioned prior art exists, can realize high-efficient desulfurization, process flow is simple, can not produce the waste liquid, and can become usable resource with the waste liquid, realized changing waste into valuables.
In order to achieve the above object, the utility model provides a following scheme:
the utility model provides a desulfurization acid-making system, which comprises a quenching flue, a desulfurization spray head, a reverse-spraying circulating pump, an absorption tower, a baffle plate demister, a liquid distributor, a filler, an acid liquid storage tank, an acid liquid pump, a hydrogen peroxide storage tank and a hydrogen peroxide metering pump;
the quenching flue and the absorption tower are vertically arranged, the top of the quenching flue is a sulfur-containing acidic waste gas inlet, the bottom of the quenching flue is connected with the absorption tower through an elbow, the desulfurization nozzle is arranged in the quenching flue, and the desulfurization nozzle sprays liquid towards the top of the quenching flue; the top of the absorption tower is a purified waste gas outlet, the baffle plate demister is arranged at the top end inside the absorption tower, the filler is arranged inside the absorption tower and is positioned at the bottom of the baffle plate demister, the liquid distributor is arranged between the filler and the baffle plate demister, and the spray opening is arranged towards the filler;
the tower bottom of the absorption tower is provided with a circulating slurry pool, one end of a reverse spraying circulating pump is communicated with the circulating slurry pool through a main circulating pipeline, the other end of the reverse spraying circulating pump is communicated with an acid liquid discharge pipeline and a circulating pipeline through a tee joint respectively, the acid liquid discharge pipeline is communicated with an acid liquid storage tank, the acid liquid storage tank discharges acid liquid through the acid liquid pump, the circulating pipeline is communicated with a hydrogen peroxide solution storage tank through a hydrogen peroxide solution metering pump, and circulating slurry conveyed by the reverse spraying circulating pump and hydrogen peroxide solution conveyed by the hydrogen peroxide solution metering pump are gathered in the circulating pipeline and then are conveyed to the desulfurization spray head and the liquid distributor respectively.
Preferably, the quenching flue is a primary flue or a multi-stage flue, and the primary flue comprises one quenching flue; the multistage flue is formed by vertically connecting a plurality of quenching flues in series, wherein the bottom of each quenching flue is provided with the desulfurization nozzle, and the quenching flue positioned at the bottom is connected with the absorption tower through the elbow.
Preferably, the tower body of the absorption tower is made of 316 stainless steel or glass fiber reinforced plastic.
Preferably, the desulfurization spray head is composed of a plurality of non-blocking spray heads, and the total spray range of the plurality of non-blocking spray heads covers the cross section of the inner channel of the quenching flue.
Preferably, the desulfurization nozzle is made of silicon carbide, silicon nitride or 316 stainless steel.
Preferably, the outside of the absorption tower is further connected with a fiber demister through a pipeline, the top of the fiber demister is a purified waste gas outlet, the bottom of the fiber demister is connected with the acid liquor storage tank through a pipeline, the fiber demister is composed of a single or a plurality of vertically arranged filter elements, and each filter element is composed of an inner mesh cylinder, an outer mesh cylinder and fibers uniformly filled between the inner mesh cylinder and the outer mesh cylinder; the inner net barrel and the outer net barrel are made of stainless steel, the fibers are glass fibers or resin fibers or carbon fibers, and the fibers are connected in a winding or folding mode.
Preferably, the packing is pall ring random packing.
Preferably, a test pipeline is led out from the main circulating pipeline, a sulfuric acid concentration analyzer is mounted on the test pipeline to measure the liquid phase density, a signal of the sulfuric acid concentration analyzer is sent to the regulating valve, and the regulating valve is used for controlling the acid liquor discharge of the reverse spraying circulating pump.
Preferably, a cleaning and spraying nozzle group is further arranged between the baffle plate demister and the filler, and nozzles of the cleaning and spraying nozzle group are arranged towards the baffle plate demister;
preferably, the circulating slurry tank is further communicated with a water replenishing pipeline, a control valve is arranged on the water replenishing pipeline, and the control valve is electrically connected with a liquid level transmitter arranged in the absorption tower.
The utility model discloses following beneficial technological effect has been gained for prior art:
the utility model provides a desulfurization system acid, process route and equipment structure are very simple, simple process, flexibility, and simple adjustment can get rid of multiple pollutant simultaneously, can handle waste gas and preparation sulphuric acid simultaneously by a tower, and desulfurization system acid is efficient, and control is accurate, has reduced the area of device; the pressure drop of the flue gas passing through the system is small, the fluctuation resistance is strong, scaling is not easy to occur, the operation and maintenance are simple, the stable operation can be carried out for a long period, and post-treatment is not needed; no waste liquid is generated, and the discharged liquid is the acid liquid. The benefit generated by the product acid can cover the construction investment of the device within several years, and zero investment and high return are realized to the maximum extent.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a middle desulfurization acid-making system of the present invention, wherein a quenching flue is a primary flue;
FIG. 2 is a schematic structural diagram of a middle desulfurization acid-making system of the present invention, wherein the quenching flue is a secondary flue;
in the figure: 1-a rapid cooling flue, 2-a desulfurization spray head, 3-a reverse spray circulating pump, 4-an absorption tower, 5-a baffle demister, 6-a liquid distributor, 7-a filler, 8-an acid liquid storage tank, 9-an acid liquid pump, 10-a hydrogen peroxide storage tank, 11-a hydrogen peroxide metering pump, 12-a circulating slurry pool, 13-a main circulating pipeline, 14-an acid liquid discharge pipeline, 15-a circulating pipeline, 16-a cleaning spray nozzle group, 17-a water supplementing pipeline and 18-a fiber demister.
Detailed Description
The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
The utility model aims at providing a desulfurization system of making acid to solve the problem that prior art exists.
In order to make the above objects, features and advantages of the present invention more comprehensible, the present invention is described in detail with reference to the accompanying drawings and the detailed description.
The embodiment provides a desulfurization acid-making system, as shown in fig. 1 and 2, which includes a quenching flue 1, a desulfurization spray head 2, a reverse-spray circulation pump 3, an absorption tower 4, a baffle demister 5, a liquid distributor 6, a filler 7, an acid liquid storage tank 8, an acid liquid pump 9, a hydrogen peroxide storage tank 10 and a hydrogen peroxide metering pump 11;
the rapid cooling flue 1 and the absorption tower 4 are vertically arranged, the top of the rapid cooling flue 1 is a sulfur-containing acidic waste gas inlet, the bottom of the rapid cooling flue 1 is connected with the absorption tower 4 through an elbow, the desulfurization nozzle 2 is arranged in the rapid cooling flue 1, and the desulfurization nozzle 2 sprays liquid towards the top of the rapid cooling flue 1; the high-temperature sulfur-containing acidic waste gas enters a quenching flue 1 to contact with a large amount of circulating slurry for quenching, and the temperature is reduced to reach a water saturation state, so that desulfurization is realized.
The top of the absorption tower 4 is a purified waste gas outlet, the baffle plate demister 5 is arranged at the top end inside the absorption tower 4, the filler 7 is arranged inside the absorption tower 4 and is positioned at the bottom of the baffle plate demister 5, the liquid distributor 6 is arranged between the filler 7 and the baffle plate demister 5, and the spraying port is arranged towards the filler 7;
the tower bottom of the absorption tower 4 is a circulating slurry tank 12, one end of a reverse spraying circulating pump 3 is communicated with the circulating slurry tank 12 through a main circulating pipeline 13, the other end of the reverse spraying circulating pump is respectively communicated with an acid liquid discharge pipeline 14 and a circulating pipeline 15 through a tee joint, the acid liquid discharge pipeline 14 is communicated with an acid liquid storage tank 8, the acid liquid storage tank 8 discharges acid liquid through an acid liquid pump 9, the circulating pipeline 15 is also communicated with a hydrogen peroxide storage tank 10 through a hydrogen peroxide metering pump 11, and circulating slurry conveyed by the reverse spraying circulating pump 3 and hydrogen peroxide conveyed by the hydrogen peroxide metering pump 11 are converged in the circulating pipeline and then respectively conveyed to a desulfurization spray head 2 and a liquid distributor 6.
In this embodiment, the quenching flue 1 is a primary flue or a multi-stage flue, and fig. 1 shows a desulfurization and acid production system provided with the primary flue, which includes an extremely-cooled flue 1; the multistage flue is formed by vertically connecting a plurality of quenching flues 1 in series, wherein the bottom of each quenching flue 1 is provided with a desulfurization nozzle 2, and the quenching flue 1 positioned at the bottom is connected with an absorption tower 4 through an elbow; fig. 2 shows a desulfurization and acid production system provided with two secondary flues, wherein two quenching flues 1 are vertically connected in series, the bottom of each quenching flue 1 is provided with a desulfurization nozzle 2, and the quenching flue 1 at the bottom is connected with an absorption tower 4 through an elbow; in the actual process of removing the hyaluronic acid, the concentration of sulfur dioxide in the flue gas is low (such as 200 mg/Nm)3) A first-stage flue is selected and a layer of desulfurization nozzles 2 are installed; if the sulfur dioxide concentration in the flue gas is higher (such as 30000 mg/Nm)3) And a secondary flue is arranged, and two layers of desulfurization nozzles 2 are arranged to cope with the high-sulfur working condition when the upstream device fluctuates.
In this embodiment, the tower body of the absorption tower 4 is made of 316 stainless steel or glass fiber reinforced plastic.
In this embodiment, the desulfurization nozzle 2 is made of silicon carbide, silicon nitride, or 316 stainless steel; the desulfurization nozzle 2 is composed of a plurality of non-blocking nozzles with large-aperture flow channels, the inclination of the flow channels and the horizontal line is within the range of 5-15 degrees, so that the total liquid spraying range of the plurality of non-blocking nozzles covers the cross section of the inner channel of the quenching flue 1 and is fully contacted with the high-temperature flue gas, and the high desulfurization efficiency is ensured.
In this embodiment, the baffle demister 5 is used to remove liquid droplets and acid mist carried in flue gas during desulfurization spraying of the quenching flue 1, and the trapped acid mist is converged into liquid droplets and collected to the bottom of the absorption tower 4 under the action of gravity for intermittent discharge.
In order to improve the acid mist removal effect, in this embodiment, a fiber demister 18 is further connected to the outside of the absorption tower 4 through a pipeline, the top of the fiber demister 18 is a purified waste gas outlet, the bottom of the fiber demister 18 is connected to an acid storage tank 8 through a pipeline, the fiber demister 18 is composed of a single or a plurality of vertically arranged filter elements, and each filter element is composed of an inner mesh cylinder, an outer mesh cylinder and fibers uniformly filled between the inner mesh cylinder and the outer mesh cylinder; the mist-containing gas passes through one side, mist particles are blocked on the fibers, and when liquid drops are enlarged, the mist particles can flow downwards along the filtering surface under the action of gravity and are discharged into the acid liquor storage tank 8 through a pipeline, so that the purpose of gas-liquid separation is achieved. When the liquid holdup of the fiber is accumulated to a certain value at a certain gas speed, the collected mist amount and the discharged liquid amount are balanced, and the fiber demister stably and continuously operates under the condition. The inner net cylinder and the outer net cylinder are made of stainless steel, the fibers are glass fibers or resin fibers or carbon fibers, and the fibers are connected in a winding or folding manner; specifically, the diameter of the filter element is determined according to the particle size of liquid drops, acid mist drops and dust particles to be removed and the flow rate of flue gas, the gas velocity is usually low and is between 0.08 and 0.2m/s, the filter element is used for collecting the mist drops with the average size of less than 1 mu m, the collecting efficiency is between 95 and 99.7 percent, the fiber demister 18 in the form is thick and compact in bed layer, the fibers are fine, and the resistance is between 490 and 1960 Pa. The high-air-speed fog drop collector is used for collecting 1-3 mu m fog drops, the collection efficiency is about 97%, and the resistance is 1470-2450 Pa.
In this embodiment, the fiber mist eliminator 18 has the advantages of convenient operation, large elasticity, low pressure drop, simple management, investment saving, high mist elimination efficiency and the like, and can be designed into a suspension type and vertical fiber mist eliminator.
In this embodiment, the packing 7 is a pall ring random packing, the pall ring diameter is usually phi 40mm or phi 50mm, and the height of the packing 7 is determined by the number of trays in which the desulfurization gas-liquid contacts.
In this embodiment, a test pipeline is led out from the main circulation pipeline 13, a sulfuric acid concentration analyzer is installed on the test pipeline to measure the liquid phase density, a signal of the sulfuric acid concentration analyzer is sent to the regulating valve, and the regulating valve controls the acid liquor discharge amount of the reverse circulation slurry pump.
In this embodiment, still be provided with between baffling board defroster 5 and the filler 7 and wash spray nozzle group 16, the nozzle that washs spray nozzle group 16 sets up towards baffling board defroster 5, and regular start prevents that baffling board defroster 5 scale deposit from blockking up. In order to protect the pH meter probe and prevent the baffle plate demister 5 from being blocked, the system is provided with automatic flushing, and the service life of the equipment is prolonged.
In the embodiment, water carried away by high-temperature flue gas quenching saturation and water carried by salt-containing discharge liquor cause water loss of the system, in order to ensure water balance, the water balance of the system is maintained by adding process water, the system is provided with an automatic control system, and the required process water amount is directly adjusted by the liquid level of the tower bottom circulating slurry pool 12; specifically, the circulating slurry tank 12 is communicated with a water supplementing pipeline 17, a control valve is arranged on the water supplementing pipeline 17, the control valve is electrically connected with a liquid level transmitter arranged inside the absorption tower 4 and used for controlling the liquid level at the bottom of the absorption tower 4, when the liquid level reaches the designed highest position, the liquid level transmitter feeds back the value to the control valve, and the control valve is closed and simultaneously reduces the flow of the pump; when the liquid level reaches the designed lowest position, the liquid level transmitter feeds the value back to the control valve, the opening degree of the control valve is improved, the flow of the pump is improved, and the liquid level is maintained to ensure the stability of circulating spraying desulfurization.
The utility model provides a desulfurization system sour system, specific desulfurization process is:
the high-temperature sulfur-containing acidic waste gas enters a quenching flue 1 to contact with a large amount of circulating slurry for quenching and cooling to reach a water saturation state, sulfur dioxide absorbed by spraying of a desulfurization nozzle 2 is dissolved and then continuously reacts with added hydrogen peroxide solution to form sulfuric acid solution, the sulfuric acid solution flows into an absorption tower 4, and a circulating slurry pool 12 is formed at the bottom of the absorption tower 4; the acidic circulating slurry in the circulating slurry tank 12 can be lifted to the desulfurization nozzle 2 by the reverse spray circulating pump 3 again for quenching to absorb sulfur dioxide; in addition, the sulfuric acid solution generated in desulfurization is continuously accumulated in the circulating slurry, the density or specific gravity in the circulating slurry is continuously increased, and the circulating slurry is discharged into a sulfuric acid storage tank after reaching a certain concentration; in the process, the density of the liquid phase is measured by a sulfuric acid concentration analyzer, a signal of the sulfuric acid concentration is sent to an adjusting valve, and the discharge amount of the acid liquid is controlled by the adjusting valve; usually the sulfuric acid concentration is at least 45%, and the concentration is concentrated to 95% or 98% of the product acid solution.
In the desulfurization process, hydrogen peroxide and circulating slurry at the bottom of the tower are partially converged and then are sent into an absorption tower 4 by a liquid distributor 6, mixed liquid and desulfurized tail gas are in countercurrent contact in a filler 7 in the tower to complete the washing of the tail gas, liquid drops and acid mist carried in the tail gas are removed by a baffle plate demister 5 and a fiber demister 18, clean gas is discharged from a purified waste gas outlet at the top of the fiber demister 18, is mixed with hot air after being boosted by an induced draft fan, and is discharged into the atmosphere through a chimney.
The utility model provides a desulfurization system of making acid adopts wet flue gas desulfurization, does not produce the waste liquid completely, and the sulfur dioxide pollutant that handles converts the sulphuric acid solution under the oxidation of hydrogen peroxide solution, and concentration can reach product level sulphuric acid through concentration treatment, has really realized changing waste into valuables. The desulfurization system acid system is based on wet process wet flue gas desulfurization technique, and shower nozzle spun liquid flow is big, pressure is big, forms momentum balance with high temperature sulphur-containing waste gas, and the gas-liquid contact is abundant, forms the foam region of strong torrent standing wave, and the flue gas lasts the cooling and reaches adiabatic saturation temperature and water saturation, can catch the sulfur dioxide in the flue gas simultaneously in the solution, by hydrogen peroxide solution oxidation for sour. The utility model discloses a desulfurization system acid technology had both had the powerful desulfurization effect of wet flue gas desulfurization technique, and the sulfur dioxide can be up to 30000mg/Nm as the tail gas treatment upper reaches device of sulphur recovery unit is undulant in special application occasion3The aim of reaching the standard of sulfur dioxide treatment under all working conditions can be achieved, and the wet desulphurization technology has the other advantage of being capable of simultaneously treating dust, hydrogen chloride, hydrogen sulfide, mercury, carbon black and the like in the flue gas until the emission reaches the standard; the utility model discloses can reply the gas fume fluctuation operating mode scope big (0-130%), desulfurization efficiency is up to more than 99%, exhanst gas outlet sulfur dioxide concentration can reach below 5ppm (15mg/Nm3) at least, dust desorption efficiency is higher than 95%, product acid concentration is higher than 42% wt usually, can reach 95% wt or 98% wt's fuming sulphur after simple concentration processingThe requirement of acid.
The utility model discloses the principle and the implementation mode of the utility model are explained by applying the concrete examples, and the explanation of the above examples is only used for helping to understand the method and the core idea of the utility model; meanwhile, for the general technical personnel in the field, according to the idea of the present invention, there are changes in the concrete implementation and the application scope. In summary, the content of the present description should not be construed as a limitation of the present invention.
Claims (10)
1. A desulfurization system of making acid which characterized in that: comprises a quenching flue, a desulfurization spray head, a reverse spray circulating pump, an absorption tower, a baffle demister, a liquid distributor, a filler, an acid liquid storage tank, an acid liquid pump, a hydrogen peroxide storage tank and a hydrogen peroxide metering pump;
the quenching flue and the absorption tower are vertically arranged, the top of the quenching flue is a sulfur-containing acidic waste gas inlet, the bottom of the quenching flue is connected with the absorption tower through an elbow, the desulfurization nozzle is arranged in the quenching flue, and the desulfurization nozzle sprays liquid towards the top of the quenching flue; the top of the absorption tower is a purified waste gas outlet, the baffle plate demister is arranged at the top end inside the absorption tower, the filler is arranged inside the absorption tower and is positioned at the bottom of the baffle plate demister, the liquid distributor is arranged between the filler and the baffle plate demister, and the spray opening is arranged towards the filler;
the tower bottom of the absorption tower is provided with a circulating slurry pool, one end of a reverse spraying circulating pump is communicated with the circulating slurry pool through a main circulating pipeline, the other end of the reverse spraying circulating pump is communicated with an acid liquid discharge pipeline and a circulating pipeline through a tee joint respectively, the acid liquid discharge pipeline is communicated with an acid liquid storage tank, the acid liquid storage tank discharges acid liquid through the acid liquid pump, the circulating pipeline is communicated with a hydrogen peroxide solution storage tank through a hydrogen peroxide solution metering pump, and circulating slurry conveyed by the reverse spraying circulating pump and hydrogen peroxide solution conveyed by the hydrogen peroxide solution metering pump are gathered in the circulating pipeline and then are conveyed to the desulfurization spray head and the liquid distributor respectively.
2. The desulfurization acid-making system according to claim 1, characterized in that: the quenching flue is a primary flue or a multi-stage flue, and the primary flue comprises the quenching flue; the multistage flue is formed by vertically connecting a plurality of quenching flues in series, wherein the bottom of each quenching flue is provided with the desulfurization nozzle, and the quenching flue positioned at the bottom is connected with the absorption tower through the elbow.
3. The desulfurization acid-making system according to claim 1, characterized in that: the tower body of the absorption tower is made of 316 stainless steel materials or glass fiber reinforced plastic materials.
4. The desulfurization acid-making system according to claim 1, characterized in that: the desulfurization spray head is composed of a plurality of non-blocking spray heads, and the total spray range of the plurality of non-blocking spray heads covers the cross section of the inner channel of the quenching flue.
5. The desulfurization acid-making system according to claim 4, characterized in that: the desulfurization nozzle is made of silicon carbide materials, silicon nitride materials or 316 stainless steel materials.
6. The desulfurization acid-making system according to claim 1, characterized in that: the absorption tower is characterized in that the outside of the absorption tower is also connected with a fiber demister through a pipeline, the top of the fiber demister is a purified waste gas outlet, the bottom of the fiber demister is connected with the acid liquor storage tank through a pipeline, the fiber demister consists of a single or a plurality of vertically arranged filter elements, and each filter element consists of an inner net cylinder, an outer net cylinder and fibers uniformly filled between the inner net cylinder and the outer net cylinder; the inner net barrel and the outer net barrel are made of stainless steel, the fibers are glass fibers or resin fibers or carbon fibers, and the fibers are connected in a winding or folding mode.
7. The desulfurization acid-making system according to claim 1, characterized in that: the filler is pall ring random packing.
8. The desulfurization acid-making system according to claim 1, characterized in that: a test pipeline is led out of the main circulating pipeline, a sulfuric acid concentration analyzer is mounted on the test pipeline to measure the liquid phase density, a signal of the sulfuric acid concentration analyzer is sent to the regulating valve, and the acid liquor discharge amount of the reverse spraying circulating pump is controlled through the regulating valve.
9. The desulfurization acid-making system according to claim 1, characterized in that: and a cleaning and spraying nozzle group is also arranged between the baffle plate demister and the filler, and nozzles of the cleaning and spraying nozzle group are arranged towards the baffle plate demister.
10. The desulfurization acid-making system according to claim 1, characterized in that: the circulating slurry pool is also communicated with a water replenishing pipeline, a control valve is arranged on the water replenishing pipeline, and the control valve is electrically connected with a liquid level transmitter arranged in the absorption tower.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920189302.6U CN210171207U (en) | 2019-02-11 | 2019-02-11 | Desulfurization acid making system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920189302.6U CN210171207U (en) | 2019-02-11 | 2019-02-11 | Desulfurization acid making system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210171207U true CN210171207U (en) | 2020-03-24 |
Family
ID=69829284
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920189302.6U Active CN210171207U (en) | 2019-02-11 | 2019-02-11 | Desulfurization acid making system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210171207U (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657331A (en) * | 2020-12-31 | 2021-04-16 | 成都达奇环境科技有限公司 | Flue gas desulfurization method and flue gas desulfurization equipment |
| CN112933946A (en) * | 2021-02-19 | 2021-06-11 | 陈洪超 | Deacidification treatment device for incineration tail gas |
| CN113426279A (en) * | 2021-07-21 | 2021-09-24 | 南京大学盐城环保技术与工程研究院 | Heavy acid waste gas treatment device and system and treatment method thereof |
| CN113663476A (en) * | 2021-08-03 | 2021-11-19 | 朝阳黑猫伍兴岐炭黑有限责任公司 | Carbon black tail gas boiler waste gas recycling method and treatment and circulation system |
-
2019
- 2019-02-11 CN CN201920189302.6U patent/CN210171207U/en active Active
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112657331A (en) * | 2020-12-31 | 2021-04-16 | 成都达奇环境科技有限公司 | Flue gas desulfurization method and flue gas desulfurization equipment |
| CN112933946A (en) * | 2021-02-19 | 2021-06-11 | 陈洪超 | Deacidification treatment device for incineration tail gas |
| CN113426279A (en) * | 2021-07-21 | 2021-09-24 | 南京大学盐城环保技术与工程研究院 | Heavy acid waste gas treatment device and system and treatment method thereof |
| CN113426279B (en) * | 2021-07-21 | 2024-05-31 | 南京大学盐城环保技术与工程研究院 | Heavy acid waste gas treatment device, system and treatment method thereof |
| CN113663476A (en) * | 2021-08-03 | 2021-11-19 | 朝阳黑猫伍兴岐炭黑有限责任公司 | Carbon black tail gas boiler waste gas recycling method and treatment and circulation system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN210171207U (en) | Desulfurization acid making system | |
| CN201912884U (en) | Ammonia desulfurizer with two-level gas distributors | |
| CN103785275B (en) | Desulfurization, ash disposal, denitration integrated flue gas clarifier | |
| CN201324593Y (en) | Wet ammonia flue gas desulphurization device | |
| CN106139866A (en) | A kind of employing adverse current opposite-flushing type turbulence washing tower waste gas treatment process and device thereof | |
| CN103977664B (en) | A kind of method of flue gas desulfurization denitration dust-removing | |
| CN201249100Y (en) | Rotary spray thionizer | |
| CN203507730U (en) | Wet-method dust removal tail-gas purifying tower | |
| CN108786398B (en) | Flue gas desulfurization and regeneration integrated tower and renewable wet flue gas desulfurization method | |
| CN101007238A (en) | Radial grading desulfurization dust-removing device | |
| CN108686478A (en) | The processing method and device of a kind of flue gas desulfurization and desulfurization wastewater | |
| CN203777911U (en) | Desulfuration, dedusting and denitration integrated flue gas cleaner | |
| CN212594852U (en) | Ammonia gas recovery structure of flying ash maintenance workshop | |
| CN201214046Y (en) | Ammonia process desulphurizing device for reducing ammonia escape | |
| CN108671734A (en) | A kind of environment-friendly highly efficient purification soda acid exhaust gas washing tower and its working method | |
| CN107952352A (en) | A kind of catalytic cracking flue gas desulphurization denitration dedusting acid-mist-removing integrated apparatus and method | |
| CN201249101Y (en) | Two-stage parallel spray thionizer | |
| CN203886369U (en) | Integrated dust extraction and purification device for stationary diesel engine system | |
| CN215196291U (en) | Multifunctional ammonia desulphurization purification device for high-concentration SO2 flue gas | |
| CN109224798A (en) | A kind of desulfurization sulphuric acid plant and vehicular desulphurization plant | |
| CN109126410A (en) | A kind of biological desulfurization process for biogas | |
| CN204973533U (en) | Cold rolled stainless steel pickling exhaust purification system | |
| CN211025783U (en) | Desulfurization denitration dust removal purifying tower | |
| CN208229633U (en) | A kind of catalytic cracking flue gas desulphurization denitration dedusting acid-mist-removing integrated apparatus | |
| CN209155505U (en) | A kind of wet desulfurizing dust-remover |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |