CN203389501U - Abnormal exhaust smoke treatment system in smelting process of metal sulfide ore - Google Patents
Abnormal exhaust smoke treatment system in smelting process of metal sulfide ore Download PDFInfo
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- CN203389501U CN203389501U CN201320381623.9U CN201320381623U CN203389501U CN 203389501 U CN203389501 U CN 203389501U CN 201320381623 U CN201320381623 U CN 201320381623U CN 203389501 U CN203389501 U CN 203389501U
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Abstract
The utility model provides an abnormal exhaust smoke treatment system in a smelting process of metal sulfide ore. The system is characterized by comprising a turbulent tower, a scrubbing tower, an electric demister and a primary adsorption tower which are connected in order, and further comprises a first plate heat exchanger, a second plate heat exchanger and an analysis tower, wherein the top of the primary adsorption tower is communicated with a secondary adsorption tower through a first exhaust pipe, the bottom of the primary adsorption tower is orderly connected with the first plate heat exchanger, the second plate heat exchanger and the analysis tower through a pregnant solution conveying pipe, the bottom of the analysis tower is connected with a re-boiler and a barren solution conveying pipe, and the top of the analysis tower is connected with a fan through a second exhaust pipe. The system has strong adaptability to SO2 smoke concentration, and is capable of effectively treating the stray SO2 smoke, and the SO2 exhaust smoke in the smelting process of the metal sulfide ore is maximally utilized.
Description
Technical field
The utility model belongs to metallurgical technology field, relates to the treatment system of improper discharged gas fume in a kind of metal sulfide smelting.
Background technology
Metal sulfide pyrometallurgical smelting process can produce a large amount of sulfur dioxide flue gas, for the improvement of sulfur dioxide flue gas application at present the most general and ripe be sulfuric acid flue gas acid preparing technique.Flue gas during smelting requires the concentration of flue gas suitable while being used for relieving haperacidity, and flue gas is continuous, stable.But for the metal sulfide smelting converter of discontinuity operation, the SO producing in its normal converting process
2flue gas can be used to relieving haperacidity, but improper emptying SO between process and soak is being opened, stopping in converter
2flue gas, unstable because of concentration, cannot meet acid-making process needs, its difficulty of governance is larger.The spuious flue gas of smelting process that the emptying flue gas of the converter of take is representative, regular poor, most of period SO
2concentration is lower, also can occur interim high concentration.For the processing of this part flue gas, not only cannot be for relieving haperacidity, the common low-concentration flue gas treatment technologies such as active coke desulphurizing also cannot meet technological requirement preferably.
Utility model content
The purpose of this utility model is the problem existing for prior art, provides a kind of to SO
2flue gas concentration strong adaptability, can be to spuious SO
2the treatment system of improper discharged gas fume in the metal sulfide smelting that flue gas carries out effectively processing.
Another object of the present utility model is to provide a kind of processing method of utilizing above-mentioned treatment system to carry out improper discharged gas fume in metal sulfide smelting.
For this reason, the utility model adopts following technical scheme:
Improper discharged gas fume treatment system in a kind of metal sulfide smelting, comprise the turbulent tower connecting successively, scrubbing tower, electrostatic precipitator and first grade absorption tower, also comprise the first plate type heat exchanger, the second plate type heat exchanger and Analytic Tower, the top of described first grade absorption tower is connected with two-level absorption tower by first row smoke pipe, bottom by rich solution carrier pipe successively with the first plate type heat exchanger, the second plate type heat exchanger and Analytic Tower are connected, the bottom of described Analytic Tower is connected with reboiler and lean solution carrier pipe, top is connected with blower fan by second row smoke pipe, the described lean solution carrier pipe other end is connected with receiver, described receiver is connected with first grade absorption tower again.
Further, described lean solution carrier pipe is connected with receiver through the first plate type heat exchanger.
Further, described system also comprises three-plate type heat exchanger, and described lean solution carrier pipe is connected with receiver with three-plate type heat exchanger through the first plate type heat exchanger.
The beneficial effects of the utility model are: to SO
2flue gas concentration strong adaptability, can be to spuious SO
2flue gas is effectively processed, and has realized SO in metal sulfide smelting process
2the maximum using of discharged gas fume; Energy-conserving and environment-protective, after treatment by the SO of low concentration
2flue gas enters high-altitude, by the SO of high concentration
2flue gas send sulfuric acid acid making system, and environmental pollution is little; Effectively utilize the heat of absorption liquid lean solution, in the first plate type heat exchanger, carry out heat exchange with absorption liquid rich solution, realized system thermal cycle, reduced energy resource consumption.
Accompanying drawing explanation
Fig. 1 is the structural representation of improper discharged gas fume treatment system during the utility model metal sulfide is smelted.
In figure, 1-turbulent tower, 2-scrubbing tower, 3-electrostatic precipitator, 4-first grade absorption tower, 5-first row smoke pipe, 6-two-level absorption tower, 7-rich solution carrier pipe, 8-the first plate type heat exchanger, 9-the second plate type heat exchanger, 10-Analytic Tower, 11-reboiler, 12-lean solution carrier pipe, 13-blower fan, 14-three-plate type heat exchanger, 15-receiver, 16-second row smoke pipe.
The specific embodiment
As shown in Figure 1, improper discharged gas fume treatment system in a kind of metal sulfide smelting, comprise the turbulent tower 1 connecting successively, scrubbing tower 2, electrostatic precipitator 3 and first grade absorption tower 4, also comprise the first plate type heat exchanger 8, the second plate type heat exchanger 9 and Analytic Tower 10, the top of first grade absorption tower 4 is connected with two-level absorption tower 6 by first row smoke pipe 5, bottom by rich solution carrier pipe 7 successively with the first plate type heat exchanger 8, the second plate type heat exchanger 9 and Analytic Tower 10 are connected, the bottom of Analytic Tower 10 is connected with reboiler 11 and lean solution carrier pipe 12, top is connected with blower fan 13 by second row smoke pipe 16, lean solution carrier pipe 12 other ends are connected with receiver 15 through the first plate type heat exchanger 8 and three-plate type heat exchanger 14, receiver 15 is connected with first grade absorption tower 4 again.In figure, rich solution carrier pipe 7 adopts thick line to represent.
A processing method for improper discharged gas fume in the metal sulfide smelting that said system is carried out, comprises following processing step:
(1) by the SO producing in metal sulfide smelting process
2flue gas successively through turbulent tower 1 cooling, through scrubbing tower 2 dedustings, and remove acid mist in flue gases through electrostatic precipitator 3, make the SO after purifying
2flue-gas temperature is down to 20 ~ 40 ℃, sulphuric acid mist content and is less than 50mg/Nm
3, the SO after purification
2flue gas enters in first grade absorption tower 4, utilizes absorption liquid in first grade absorption tower 4 to SO
2flue gas absorbs, and absorptivity is greater than 90 ~ 97%, and described absorption liquid is that concentration is the sodium citrate solution of 1-2mol/l; Unabsorbed SO
2flue gas enters in two-level absorption tower 6 by first row smoke pipe 5, utilizes aqueous slkali in two-level absorption tower 6 to unabsorbed SO
2flue gas carries out double absorption, makes the SO after double absorption
2flue gas concentration is less than 400mg/Nm
3, then by two-level absorption tower 6, enter high-altitude; Described aqueous slkali is that mass concentration is the NaOH solution of 10-20%;
(2) absorption liquid rich solution absorption process in first grade absorption tower being produced is heated to 65-70 ℃ through the first plate type heat exchanger 8, then through the second plate type heat exchanger 9, is heated to 90-100 ℃, SO in absorption liquid rich solution
2content is 55 ~ 75g/L; Absorption liquid rich solution after heating is delivered to Analytic Tower 10, and the absorption liquid rich solution of Analytic Tower 10 bottoms enters in reboiler 11 and steam heat-exchanging, and generation steam is heated; The steam of reboiler 11 interior generations is passed in Analytic Tower 10, the absorption liquid rich solution of Analytic Tower 10 middle and upper parts is carried out to air lift, by the SO in absorption liquid rich solution
2resolve the SO that after resolving, organizator volume concentrations is 50 ~ 60%
2flue gas, is delivered to sulfuric acid acid making system through blower fan 16;
(3) absorption liquid rich solution forms absorption liquid lean solution, SO in absorption liquid lean solution after resolving
2content is 25 ~ 35g/L, temperature 95-100 ℃; Absorption liquid lean solution is carried out heat exchange with absorption liquid rich solution in the first plate type heat exchanger 8, and be cooled to 75-80 ℃, then in three-plate type heat exchanger 14, be cooled to below 40 ℃ with recirculated cooling water heat exchange, and kept in by receiver 15, then enter in first grade absorption tower 4 and repeat to absorb.
Claims (3)
- A metal sulfide smelt in improper discharged gas fume treatment system, it is characterized in that, comprise the turbulent tower connecting successively, scrubbing tower, electrostatic precipitator and first grade absorption tower, also comprise the first plate type heat exchanger, the second plate type heat exchanger and Analytic Tower, the top of described first grade absorption tower is connected with two-level absorption tower by first row smoke pipe, bottom by rich solution carrier pipe successively with the first plate type heat exchanger, the second plate type heat exchanger and Analytic Tower are connected, the bottom of described Analytic Tower is connected with reboiler and lean solution carrier pipe, top is connected with blower fan by second row smoke pipe, the described lean solution carrier pipe other end is connected with receiver, described receiver is connected with first grade absorption tower again.
- 2. improper discharged gas fume treatment system in a kind of metal sulfide smelting according to claim 1, is characterized in that, described lean solution carrier pipe is connected with receiver through the first plate type heat exchanger.
- 3. improper discharged gas fume treatment system in a kind of metal sulfide smelting according to claim 2, is characterized in that, also comprise three-plate type heat exchanger, described lean solution carrier pipe is connected with receiver with three-plate type heat exchanger through the first plate type heat exchanger.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381623.9U CN203389501U (en) | 2013-06-30 | 2013-06-30 | Abnormal exhaust smoke treatment system in smelting process of metal sulfide ore |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320381623.9U CN203389501U (en) | 2013-06-30 | 2013-06-30 | Abnormal exhaust smoke treatment system in smelting process of metal sulfide ore |
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| CN203389501U true CN203389501U (en) | 2014-01-15 |
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| CN201320381623.9U Expired - Fee Related CN203389501U (en) | 2013-06-30 | 2013-06-30 | Abnormal exhaust smoke treatment system in smelting process of metal sulfide ore |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301716A (en) * | 2013-06-30 | 2013-09-18 | 金川集团股份有限公司 | Irregular exhaustion flue gas treatment system and method in metal sulphide ore smelting |
-
2013
- 2013-06-30 CN CN201320381623.9U patent/CN203389501U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103301716A (en) * | 2013-06-30 | 2013-09-18 | 金川集团股份有限公司 | Irregular exhaustion flue gas treatment system and method in metal sulphide ore smelting |
| CN103301716B (en) * | 2013-06-30 | 2015-08-12 | 金川集团股份有限公司 | Improper discharged gas fume treatment system and method in a kind of metal sulfide smelting |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20140115 Termination date: 20190630 |