CN103801185B - Metallic fume treatment and purification system - Google Patents

Metallic fume treatment and purification system Download PDF

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Publication number
CN103801185B
CN103801185B CN201210441386.0A CN201210441386A CN103801185B CN 103801185 B CN103801185 B CN 103801185B CN 201210441386 A CN201210441386 A CN 201210441386A CN 103801185 B CN103801185 B CN 103801185B
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pipeline
spray column
circulating slot
tower
scrubbing tower
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CN201210441386.0A
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CN103801185A (en
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施国平
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JIANGSU JIASHIDA ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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JIANGSU JIASHIDA ENVIRONMENTAL PROTECTION ENGINEERING Co Ltd
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Abstract

nullThe present invention relates to filed of flue gas purification,For controlling environmental pollution、Purpose is to provide a kind of metallic fume treatment and purification system,Including the condenser linked together by pipeline、Spray column and scrubbing tower,Multiple spiral nozzle it is provided with in Spray column,The outside of Spray column is provided with the first circulating slot,First circulating slot is built with aqua calcis,The lower end of Spray column is connected by the sidepiece of the first pipeline and the first circulating slot,The pipeline communicated with spiral nozzle passes through second pipeline sidepiece also with the first circulating slot and connects,Second pipeline is provided with the first recycle liquid pump,The top of Spray column is connected with scrubbing tower by the 3rd pipeline,Packing layer it is provided with in scrubbing tower,Packing layer be arranged over three-dimension type demister,The top of scrubbing tower is provided with clean gas floss hole,It is discharged into atmosphere by fan action power,The outside of scrubbing tower is provided with the second circulating slot,Second circulating slot is built with sodium hydroxide solution,The pipeline communicated with three-dimension type demister is extend in the second circulating slot by the 4th pipeline,4th pipeline is provided with the second recycle liquid pump.

Description

Metallic fume treatment and purification system
Technical field
The present invention relates to filed of flue gas purification, particularly relate to a kind of metallic fume treatment and purification system System, is used for controlling environmental pollution.
Background technology
Non-ferrous metal metallurgy smoke components complexity, harmful gas are (such as sulfur, chlorine, hydrargyrum, cadmium, aluminum Or arsenic) flue gas, smoke components is slightly soluble in water, through high-temperature oxydation in smelting process, cigarette Temperature height plug for outlet temperature is at 900 DEG C, and volatilization or other materials react to each other (empty with gas carrier Gas) enter atmosphere, they energy long periods are floating in atmosphere, or fall during rainfall, After be deposited on plant or soil surface, by crops and human consumption, very big to human health risk, Pollution on the environment is the most destructive, in non-ferrous metal metallurgy fume treatment system of China System pole imperfection.
For non-ferrous metal metallurgy fume treatment, domestic warp frequently with processing method: 1. use NaOH2Secondary purification method, owing to temperature height reacts other material, there is mist dragon and presss from both sides in aiutage The harmful substances such as band granule, after using activated carbon adsorption to purify, gold heavily belongs to element to be difficult to adsorb, Be accessible to saturated, cost is high.2. use the method such as electron beam irradiation collimation method and impulse electric corona, Exhaust gas volumn is big, cannot aoxidize heavy metal composition, it is difficult to purifying requirement.
Summary of the invention
For solving above-mentioned technical problem, the present invention provides that a kind of equipment is reliable, stable, transports Row low cost is simple to operate, easy to maintenance, smelting non-ferrous metal class flue gas is relatively suitable for use Metallic fume treatment and purification system.
The metallic fume treatment and purification system of the present invention, cold including linked together by pipeline Condenser, Spray column and scrubbing tower, the bottom of described condenser be provided with cooling water inlet and Coolant outlet, is provided with coil pipe in condenser, gas approach is connected with one end of condenser, cold The other end of condenser is connected with Spray column, be provided with in described Spray column multiple spirally Nozzle, the outside of Spray column is provided with the first circulating slot, and the first circulating slot is built with hydroxide Calcium solution, the lower end of Spray column is connected by the sidepiece of the first pipeline and the first circulating slot, The pipeline communicated with spiral nozzle passes through second pipeline sidepiece also with the first circulating slot and connects, Second pipeline is provided with the first recycle liquid pump, and the 3rd pipeline is passed through on the top of described Spray column Be connected with described scrubbing tower, in described scrubbing tower, be provided with packing layer, packing layer be arranged over three Dimension formula demister, the top of scrubbing tower is provided with clean gas floss hole, is arranged by fan action power Being put into atmosphere, the outside of scrubbing tower is provided with the second circulating slot, and the second circulating slot is built with hydrogen-oxygen Changing sodium solution, the pipeline communicated with three-dimension type demister extend into the second circulation by the 4th pipeline In groove, the 4th pipeline is provided with the second recycle liquid pump.
Further, described condenser is shell-and-tube cooler, and flue gas is by condenser coil Exchanging with cooling water heat outside transmission temperature, coil pipe side, temperature controls at 120 DEG C;
Further, in described Spray column tower, wind speed is 1.2m/s, in Spray column tower Sprinkle density 8-12m3/m2.h, the sprinkle density in scrubbing tower is 6-8m3/m2.h。
Further, the concentration of described lime water is 20%, and in tower, temperature controls 50 DEG C, the concentration of caustic lye of soda be 10%, in tower, temperature controls at 30 DEG C, caustic lye of soda PH value is 9-10.
Further, described spray tower air inlet pipeline material be carbon steel, spraying tower body be composite wood Material steel lining plastic or fiberglass, scrubbing tower tower body material is fiberglass FRp.
Compared with prior art, the invention have the benefit that the non-ferrous metal metallurgy of the present invention Smoke processing system is reliable through equipment, stable, low simple to operate, the maintenance side of operating cost Just, relatively it is suitable for smelting non-ferrous metal class flue gas using.
My company is in areas such as Chengdu, Sichuan, Chongqing, Yunnan, Shaanxi, to non-ferrous metal flue gas Process using effect is good, detects data heavy metal 0.25mg/nm3, SO2Isoconcentration 25mg/nm3, air reach secondary discharge standard.
Accompanying drawing explanation
Fig. 1 is the structural representation of the metallic fume treatment and purification system of the present invention.
Detailed description of the invention
Below the detailed description of the invention of the present invention is described in further detail;Following example are used In the explanation present invention, but it is not limited to the scope of the present invention.
Shown in Figure 1, the metallic fume treatment and purification system of the present invention, including passing through pipeline Condenser 10, Spray column 20 and the scrubbing tower 30 linked together, described condenser 1 Bottom be provided with cooling water inlet 101 and coolant outlet 102, be provided with coil pipe in condenser 10, Gas approach is connected with one end of condenser 10, the other end of condenser 10 and Spray column 20 It is connected, in described Spray column 20, is provided with multiple spiral nozzle 201, Spray column 20 Outside be provided with the first circulating slot 40, the first circulating slot 40 built with aqua calcis, spraying The lower end on absorption tower 20 is connected, with spiral with the sidepiece of the first circulating slot 40 by the first pipeline 50 The pipeline that formula nozzle communicates passes through second pipeline 60 sidepiece also with the first circulating slot 40 and connects, the Two pipelines 60 are provided with the first recycle liquid pump 202, and the top of described Spray column 20 is by the Three pipelines 70 are connected with described scrubbing tower 30, be provided with packing layer 301, fill out in described scrubbing tower 30 The bed of material 301 be arranged over three-dimension type demister 302, the top of scrubbing tower 30 is provided with clean gas Floss hole 304, is discharged into atmosphere by fan action power, and the outside of scrubbing tower 30 is provided with Two circulating slots 80, the second circulating slot 80 is built with sodium hydroxide solution, with three-dimension type demister 302 The pipeline communicated is extend in the second circulating slot 80 by the 4th pipeline 90, and the 4th pipeline 90 sets There is the second recycle liquid pump 303.
Condenser 10 is shell-and-tube cooler, and flue gas is by transmission temperature, dish in condenser coil Tube side is outer and cooling water heat exchanges, and temperature controls at 120 DEG C;
In Spray column 20 tower, wind speed is 1.2m/s, the sprinkle density in Spray column 20 tower 8-12m3/m2.h, temperature 50 C in tower, sprinkle density in scrubbing tower 30 are 6-8m3/m2.h。 In tower, in temperature 30 DEG C, tower, pressure is negative 650Pa.
The concentration of lime water is 20%, and the concentration of caustic lye of soda is 10%, sodium hydroxide The pH value of liquid is 9-10.
Described spray tower air inlet pipeline material be carbon steel, spraying tower body be composite steel lining plastic or Fiberglass, scrubbing tower 30 tower body material is fiberglass FRp.
The work process of metallic fume treatment and purification system of the present invention is as follows:
Combustion gas furnace inner outlet enters in gas skirt, and flue gas exit temperature is relevant with gas skirt height System, under blower fan driving effect, lowers the temperature through shell-and-tube cooler, and flue gas is by transmission in coil pipe Controlling at 120 DEG C with cooling water heat exchange, temperature outside temperature, coil pipe side, technological process is to spray Mist tower, wind speed 1.2m/s in spray tower tower, spray tower absorbent is the calcium hydroxide of concentration 20% Solution, sprinkle density 8-12m3/m2.h, in spray tower, effective temperature-reducing is to 50 DEG C, at wind for flue gas Produce negative pressure under machine driving effect, in tower, the fine mist of nozzle generation makes gas reach saturated Hypersaturated state, fine mist the most effectively absorb heavy metal finely ground particle substance and coagulate with gas collisions And, become bigger polymer and settle down, flue gas particle concentration 800mg/m3It is down to 40mg/m3 Solid SS granule noxious substance coagulating sedimentation slag in lime white absorbent receives flue gas, with SO2Being neutralized reaction, temperature is when 50 DEG C, and it can improve the pH value of absorbent slurry, fall Low slurry viscosity, improves serosity working condition and atomizing effect.Actually be cured invasion slag liquid In, eliminating a large amount of harmful smoke, wet cleaning is sulphuric acid after a period of time, in circulation fluid Calcium containing can cumulative big, have crystal to separate out, slag liquid buried through filtering, be dehydrated, concentrate, packing Or send water treatment station to process.
Preamble through aqua calcis process after produce aerosol, and after coagulation tail gas mist Carry trace secretly and be harmful to SO2Deng gas, use two stage treatment, be recycled to scrubbing tower, absorbent is 10% sodium hydroxide solvent, solution pH value is 9-10, in waste gas press-in scrubbing tower, in scrubbing tower Sprinkle density be 6-8m3/m2.h, temperature control 30 DEG C, it can improve absorption reaction, wash Take gas-liquid conversed upper absorption pattern to process in washing tower, i.e. liquid from tower top downwards with vaporific (or Little water droplet) spray and under, the pressurization of scrubbing tower solution be allowed to be formed in tower vaporific, with solvent hydrogen Sodium oxide is neutralizing reaction, reaches to purify requirement, and concentration is 20mg/m3Meet national up to standard Discharge.
The above is only the preferred embodiment of the present invention, it is noted that lead for this technology For the those of ordinary skill in territory, on the premise of without departing from the technology of the present invention principle, it is also possible to Making some improvement and modification, these improve and modification also should be regarded as protection scope of the present invention.

Claims (1)

1. a metallic fume treatment and purification system, it is characterised in that: include by pipeline even Condenser, Spray column and the scrubbing tower being connected together, the bottom of described condenser is provided with Cooling water inlet and coolant outlet, be provided with coil pipe, gas approach and condenser in condenser One end connects, and the other end of condenser is connected with Spray column, sets in described Spray column Having multiple spiral nozzle, the outside of Spray column is provided with the first circulating slot, the first circulating slot Built with aqua calcis, the first pipeline and the first circulating slot are passed through in the lower end of Spray column Sidepiece connection, the pipeline communicated with spiral nozzle by the second pipeline also with the first circulating slot Sidepiece connection, the second pipeline is provided with the first recycle liquid pump, the top of described Spray column It is connected with described scrubbing tower by the 3rd pipeline, in described scrubbing tower, is provided with packing layer, packing layer Be arranged over three-dimension type demister, the top of scrubbing tower is provided with clean gas floss hole, washing The outside of tower is provided with the second circulating slot, and the second circulating slot is built with sodium hydroxide solution, with three-dimensional The pipeline that formula demister communicates is extend in the second circulating slot by the 4th pipeline, on the 4th pipeline It is provided with the second recycle liquid pump;
Described condenser is shell-and-tube cooler, and flue gas is controlled by temperature in condenser coil 120 DEG C:
In described Spray column tower, wind speed is 1.2m/s, the sprinkle density in Spray column tower 8-12m3/m2.h, the sprinkle density in scrubbing tower is 6-8m3/m2.h;
The concentration of described lime water is 20%, and the concentration of caustic lye of soda is 10%, hydrogen-oxygen The pH value changing sodium liquid is 9-10;
Described scrubbing tower tower body material is fiberglass.
CN201210441386.0A 2012-11-08 2012-11-08 Metallic fume treatment and purification system Active CN103801185B (en)

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Publication number Priority date Publication date Assignee Title
CN109224819A (en) * 2018-11-02 2019-01-18 辽宁新瑞碳材料科技有限公司 A kind of purification method of high temperature furnace sulfur-containing tail gas
CN109224799A (en) * 2018-11-02 2019-01-18 辽宁新瑞碳材料科技有限公司 A kind of purification system of high temperature furnace sulfur-containing tail gas
CN109708481B (en) * 2019-01-14 2021-02-05 迁安市九江线材有限责任公司 High-efficient environment-friendly steelmaking furnace
CN112077275A (en) * 2020-09-26 2020-12-15 李万生 Die casting machine for machining

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839849A (en) * 1971-08-24 1974-10-08 G Maniya Wet type desulfurization system for flue gas
CN1165051A (en) * 1997-02-25 1997-11-19 沈阳环境科学研究所 High efficiency flue gas desulfurization technology
CN101485957A (en) * 2009-01-08 2009-07-22 浙江大学 Device and method of simultaneous desulfuration and denitration for flue gas using ozone oxygenation combined with double-tower washing
CN101653694A (en) * 2008-08-22 2010-02-24 邱吉康 High-efficiency desulfurizing and dedusting device and desulfurizing and dedusting method thereof
CN102698582A (en) * 2012-05-30 2012-10-03 艾淑艳 Ammonium bicarbonate desulfurization process and ammonium bicarbonate desulfurization process system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2011142405A1 (en) * 2010-05-13 2011-11-17 戸田工業株式会社 Wet-type flue-gas desulfurization device using three-way spray nozzle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3839849A (en) * 1971-08-24 1974-10-08 G Maniya Wet type desulfurization system for flue gas
CN1165051A (en) * 1997-02-25 1997-11-19 沈阳环境科学研究所 High efficiency flue gas desulfurization technology
CN101653694A (en) * 2008-08-22 2010-02-24 邱吉康 High-efficiency desulfurizing and dedusting device and desulfurizing and dedusting method thereof
CN101485957A (en) * 2009-01-08 2009-07-22 浙江大学 Device and method of simultaneous desulfuration and denitration for flue gas using ozone oxygenation combined with double-tower washing
CN102698582A (en) * 2012-05-30 2012-10-03 艾淑艳 Ammonium bicarbonate desulfurization process and ammonium bicarbonate desulfurization process system

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