CN101884872A - Double-oxidation, double-loop and double-demisting desulfurization tower and processing device - Google Patents
Double-oxidation, double-loop and double-demisting desulfurization tower and processing device Download PDFInfo
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- CN101884872A CN101884872A CN200910136713XA CN200910136713A CN101884872A CN 101884872 A CN101884872 A CN 101884872A CN 200910136713X A CN200910136713X A CN 200910136713XA CN 200910136713 A CN200910136713 A CN 200910136713A CN 101884872 A CN101884872 A CN 101884872A
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Abstract
The invention relates to the technical field of environmental protection equipment, in particular to a double-oxidation, double-loop and double-demisting desulfurization tower and a processing device for carrying out desorption and recovery treatment for sulfur dioxide in flue gas from a boiler, wherein the tower body is divided into four sections, comprising an oxidation section, an oxidation evaporation saturation section, a purification absorption section and a demisting section from bottom to top; a flue gas inlet is arranged at the middle of the tower; the top of the tower is provided with a flue gas outlet and a dewatering and demisting section for desorbing water vapor; the bottom of the tower is provided with the oxidation section for collecting reaction products and carrying out ventilation oxidation for the reaction products; the dewatering and demisting section is provided with a device for demisting, filling and spraying process water; and the oxidation section is provided with a circulating liquid outlet which is connected to a spray system through a circulating pump. The invention has the beneficial effects of simple structure, convenient operation and maintenance, environmental protection, good double demisting effect, and low ammonia consumption; and in the invention, double oxidation efficiency reaches 99%, double circulation desulfuration efficiency is more than 98%, demisting effect is good, ammonia consume is low and the product ammonium sulfate reaches the standard.
Description
Technical field
The present invention relates to the environmental protection equipment technical field, relate in particular to a kind of three pairs of desulfurization of dioxygenization, double loop, two demist and process unit that sulfur dioxide in the boiler smoke is removed and recycles.
Background technology
Problems such as when the present ammonia process of desulfurization was applied to the desulfurization of fire coal boiler fume, ubiquity that ammonia consumption is high, aerosol is difficult to elimination, absorption liquid processing cost height, operation easier are big.Because ammonia type flue gas desulfurizing is to absorb sulfur dioxide with ammonia to generate ammonium sulfite usually, use air oxidation then, but the ammonium sulfite of high concentration can not quick and completely be direct oxidation into ammonium sulfate, but obtains product by evaporating and concentrating process after the oxidation under low concentration, and its evaporation capacity is very big, the very big and long flow path of energy consumption, equipment is many, occupation of land is big, and the operating cost height is for guaranteed efficiency, the desulfurizing tower of wet-type ammonia is used the packed tower structure again mostly, exists equipment complexity, problem such as difficult in maintenance.
Summary of the invention
For solving above-mentioned deficiency, the object of the present invention is to provide a kind of simple in structure, easy to maintenance, reliable, three pairs of desulfurizing towers of dioxygenization, double loop, two demist and process unit that desulphurization cost is low.
For achieving the above object, the technical solution adopted in the present invention is: a kind of dioxygenization, the double loop, three pairs of desulfurizing towers of two demists, it is 4 sections that tower body is divided into, be followed successively by oxidation panel from bottom to top, saturated section of oxidation evaporation, purify absorber portion, the demist section, the tower body middle part is provided with into mouth, the top is provided with outlet flue, also be provided with the dehydrating demisting section that is used for removing steam, be provided with in tower body bottom and be used for collecting reaction product and the oxidation panel of its oxidation of ventilating, absorbing spray section is packless void tower structure, be provided with spray system in this section, the dehydrating demisting section is provided with demist filler and fresh water (FW) spray equipment, oxidation panel is provided with the circulation fluid outlet, and the circulation fluid outlet is connected to spray system through circulating pump.
Process unit of the present invention is: the primary purifying circulating absorption solution carries out oxidation in elementary oxygen section; The secondary purification circulating absorption solution is 2 sections bottom oxidations; After oxidation and evaporation are saturated, overflow to crystallization tank, after squeezing into cyclone and separate with the crystallization pump, enter the stiff device, enter centrifuge separation removal moisture content through the stiff device then, afterwards, sulfate of ammoniac pneumatic conveyer dryer drying is removed finished product packing, and the backflow clear liquid that removes in the technology enters circulating slot and recycles.
Flue gas enters from the middle and lower part of 2 sections in tower, at first contacts absorption reaction with 2 sections spray circulation desulfurization liquid, after desulfurization just, enters 3 sections by rising gas cap, passes through spray and the reaction of initial cycle liquid, the SO in the absorption cleaning gas at 3 sections
2The SO of this moment
2Basic absorption is clean, rising along with gas, top is provided with the automatic water jetting that prevents the escaping of ammonia and cleans demister, the cleaning demist of spraying water from the upper and lower of one-level demister, escape ammonia can be absorbed and also demist can be carried out, carry out the secondary purification demist afterwards again on top, flue gas is in line through chimney from cat head.
The invention has the beneficial effects as follows: simple in structure, convenient operating maintenance, environmental protection, dioxygen efficient reaches 99%, and double circulation desulphurization efficient reaches more than 98%, and two good except that fog effect, the ammonia consumption is low and product ammonium sulfate is up to standard.
Description of drawings
The invention will be further described below in conjunction with drawings and Examples.
Fig. 1 is a structural representation of the present invention.
Among the figure, advance mouth 1, outlet flue 2 absorbs spray section 3, dehydrating demisting section 4, oxidation panel 5, spray system 6, saturated section 7 of oxidation, demist filler 8, fresh water (FW) spray equipment 9, circulation fluid outlet 10, circulating pump 11 purifies absorber portion 12, crystallization pump 13, crystallization tank 14, cyclone 15, stiff device 16, centrifuge 17, pneumatic conveyer dryer 18, packing 19.
The specific embodiment
As shown in the figure, a kind of dioxygenization, the double loop, three pairs of desulfurizing towers of two demists and process unit, it is 4 sections that tower body is divided into, be followed successively by oxidation panel 5 from bottom to top, saturated section 7 of oxidation evaporation, purify absorber portion 12, demist section 4, the tower body middle part is provided with into mouth 1, the top is provided with outlet flue 2, also be provided with the dehydrating demisting section 4 that is used for removing steam, be provided with in tower body bottom and be used for collecting reaction product and the oxidation panel 5 of its oxidation of ventilating, absorbing spray section 3 is packless void tower structure, be provided with spray system 6 in this section, dehydrating demisting section 4 is provided with demist filler 8 and fresh water (FW) spray equipment 9, oxidation panel 5 is provided with circulation fluid outlet 10, and circulation fluid outlet 10 is connected to spray system 6 through circulating pump 13.
Claims (2)
1. dioxygenization, double loop, three pairs of desulfurizing towers of two demist and process unit, it is 4 sections that tower body is divided into, be followed successively by oxidation panel, saturated section of oxidation evaporation from bottom to top, purify absorber portion, demist section, it is characterized in that the tower body middle part is provided with into mouth, the top is provided with outlet flue, also be provided with the demist section, be provided with oxidation panel in the tower body bottom.
2. dioxygenization according to claim 1, double loop, three pairs of desulfurizing towers of two demist and process unit, it is characterized in that described dehydrating demisting section is provided with demist filler and fresh water (FW) spray equipment, oxidation panel is provided with the circulation fluid outlet, and the circulation fluid outlet is connected to spray system through circulating pump.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910136713XA CN101884872A (en) | 2009-05-13 | 2009-05-13 | Double-oxidation, double-loop and double-demisting desulfurization tower and processing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910136713XA CN101884872A (en) | 2009-05-13 | 2009-05-13 | Double-oxidation, double-loop and double-demisting desulfurization tower and processing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101884872A true CN101884872A (en) | 2010-11-17 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200910136713XA Pending CN101884872A (en) | 2009-05-13 | 2009-05-13 | Double-oxidation, double-loop and double-demisting desulfurization tower and processing device |
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| CN (1) | CN101884872A (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553388A (en) * | 2012-03-06 | 2012-07-11 | 山东派力迪环保工程有限公司 | Water film dehydrator |
| CN103585874A (en) * | 2013-12-03 | 2014-02-19 | 张波 | System and method for desulphurization and denitration |
| CN105749716A (en) * | 2013-12-03 | 2016-07-13 | 张波 | Desulfurization and denitrification method of desulfurization and denitrification system |
| US10449488B2 (en) * | 2017-09-07 | 2019-10-22 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
-
2009
- 2009-05-13 CN CN200910136713XA patent/CN101884872A/en active Pending
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102553388A (en) * | 2012-03-06 | 2012-07-11 | 山东派力迪环保工程有限公司 | Water film dehydrator |
| CN103585874A (en) * | 2013-12-03 | 2014-02-19 | 张波 | System and method for desulphurization and denitration |
| CN103585874B (en) * | 2013-12-03 | 2016-05-04 | 张波 | System for desulfuration and denitration and desulfurization denitration method thereof |
| CN105749716A (en) * | 2013-12-03 | 2016-07-13 | 张波 | Desulfurization and denitrification method of desulfurization and denitrification system |
| CN105749716B (en) * | 2013-12-03 | 2018-06-19 | 张波 | A kind of desulfurization denitration method of system for desulfuration and denitration |
| US10449488B2 (en) * | 2017-09-07 | 2019-10-22 | Jiangnan Environmental Protection Group Inc. | Method for controlling aerosol production during absorption in ammonia desulfurization |
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Application publication date: 20101117 |