CN104096470A - Preparation method and manufacturing process for ammonia special for denitration and desulfurization of chimney flue gas - Google Patents
Preparation method and manufacturing process for ammonia special for denitration and desulfurization of chimney flue gas Download PDFInfo
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- CN104096470A CN104096470A CN201410351086.2A CN201410351086A CN104096470A CN 104096470 A CN104096470 A CN 104096470A CN 201410351086 A CN201410351086 A CN 201410351086A CN 104096470 A CN104096470 A CN 104096470A
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A50/00—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE in human health protection, e.g. against extreme weather
- Y02A50/20—Air quality improvement or preservation, e.g. vehicle emission control or emission reduction by using catalytic converters
Abstract
The invention relates to a formula and a manufacturing process for ammonia special for chimney denitration and desulfurization in the industries of calcination in cement manufacturing, thermal power generation, heating, oil refining, non-ferrous metal smelting and the like. The preparation method mainly comprises the following steps: measuring sulfur (NOX) contents according to the producing areas of burning coal of various enterprises; determining the content of NH3 in different water, wherein researches show that the content of NH3 in ammonia for denitration and desulfurization is between 5% and 40%. Water adopted in ammonia is selected from the following aspects of (1) natural water, (2) soft water subjected to softening process, (3) pure water subjected to first-level reverse osmosis, and (4) high pure water subjected to second-level reverse osmosis, and the ammonia prepared from the four kinds of water is the special ammonia for chimney denitration and desulfurization of coal enterprises.
Description
Technical field
The present invention relates to the calcining that cement is manufactured, thermal power generation, heating, petrochemical refining, non-ferrous metal metallurgy, etc. compound method and the manufacturing process of the special ammoniacal liquor of coal combustion chimney smoke denitration desulfurization.
Background technology
The sintering of manufacturing for reducing cement, thermal power generation, heating, non-ferrous metal metallurgy, petrochemical refinings etc. discharge the pollution of flue gas, and waste gas chemical absorbing denitration desulfurization has been applied to environmental protection treatment link.Selective catalytic reduction in this environment-friendly treating process (SCR) and non-selective reducing process (SNCR) or both mixed methods (SCR/SNCR) are widely used, this method is at certain temperature and catalyst action, utilizes ammonia or hydrocarbon to make reducing agent NOX is reduced to the method for nitrogen G&W.This technology is without byproduct, and denitration desulfuration efficiency can reach more than 80～90%.This method is little on the impact of atmosphere quality, is that current denitration desulfuration efficiency is higher, the most ripe, and most widely used denitration desulfur technology.To saving the energy, reduce pollution to atmosphere, the environment that purifies air, reaching pollution treatment, to subtract the object of haze significant.In these techniques, all need to use ammonia as reducing agent, the mode that adds ammonia in practical operation is all to add in ammonia spraying mode, and therefore ammonia concn is most important.
Summary of the invention
The present invention is the new raw material ammoniacal liquor of the denitrating flue gas desulfurization in order to solve the generation of chimney coal combustion.It is high that it has denitration desulfuration efficiency, and non-secondary pollution can sulfur dioxide absorption, meets the requirement of recycling economy.
The special ammoniacal liquor of a kind of chimney denitration desulfurization, containing NH
35%--40% (percentage by weight), all the other are water.
Described special ammoniacal liquor manufacturing process, it is realized according to following any one:
1. natural running water preparation ammoniacal liquor: adopt natural running water to enter ammoniacal liquor through aqueduct and manufacture in tank, when this water fluid level reaches tank internal volume 60%, open liquid ammonia storage tank valve or send ammonia tank valve (liquid phase) and ammonia water tank drain tap (gas phase) on ammonia car to make 99.5%--99.8%NH
3slowly enter ammoniacal liquor and manufacture in tank, use NH
3spray-on process, makes liquefied ammonia be combined with water, absorbs, and manufactures containing NH
3the special ammoniacal liquor of denitration desulfurization of 5%--40%;
2. soft water preparation ammoniacal liquor: adopt running water to enter ammoniacal liquor through demineralized water soft water after treatment and manufacture in tank, when this water liquid level reaches tank internal volume 60%, open NH
3storage tank or transport ammonia car ammonia tank valve (liquid phase) and ammonia water tank drain tap (gas phase) makes 99.5%--99.8NH
3slowly enter ammoniacal liquor and manufacture in tank, adopt NH3 spray-on process to make liquefied ammonia and soft water combination, absorb, make containing NH
3the special soft water ammoniacal liquor of chimney denitration desulfurization of 5%--40%;
3. pure water is manufactured ammoniacal liquor: adopt water treatment system that soft water after treatment enters first-stage reverse osmosis again pure water after treatment, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, ammonia tank valve (liquid phase) and the ammonia water tank drain tap (gas phase) of opening liquid ammonia storage tank valve or transport on liquefied ammonia automobile make content in 99.5%--99.8% liquefied ammonia slowly enters ammoniacal liquor manufacture tank, make liquefied ammonia and pure water combination by NH3 spray-on process, absorb, make NH3 content at the special ammoniacal liquor of 5%--40% chimney denitration desulfurization, ammoniacal liquor metallic residue content≤0.3, be difficult for muddy, transparently be greater than 80%,
4. high purity water is manufactured ammoniacal liquor: adopt running water high purity water through two-pass reverse osmosis processing again after softening processing, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, open liquid ammonia storage tank valve (liquid phase) or transport ammonia tank valve (liquid phase) on the automobile of liquefied ammonia and ammonia water tank drain tap (gas phase) makes content slowly enter ammoniacal liquor at 99.5%--99.8% liquefied ammonia to manufacture in tank, adopt NH3 spray-on process to make liquefied ammonia and high purity water combination, absorb, manufacture NH
3the high purity water ammoniacal liquor of content 5%--40%, gained ammoniacal liquor residue content≤0.2, pure, bright, electrical conductivity is lower than 0.00012.
In order to solve the particular problem existing in denitration desulfurization, the technical solution used in the present invention is: the testing result of user by the place of production to coal-fired, sulfur content (NOX) height, we adopt different from NH
3the new technology that the ammoniacal liquor of amount (5%--40%) carries out denitration desulfurization, new method.Products characteristics of the present invention: advanced technology, reasonable in design, good in economic efficiency, easy to use.
Beneficial effect of the present invention:
1, product of the present invention, for cement products sintering, thermal power generation, heating, petrochemical refining, non-ferrous metal metallurgy, Deng the denitration desulfurization of coal-fired flue-gas, can effectively reduce the 30%--50% of sulfur dioxide (NOX) discharge capacity in atmosphere, reclaim the development that byproduct of ammonium sulfate chemical fertilizer is conducive to recycling economy, turn waste into wealth.
2, product design of the present invention is scientific and reasonable, for the coal-fired place of production, detects coal (NOX) sulfur content and decides the invention product that adopts different content, can reduce operating cost, saves the energy, can save denitration desulfurization expense 20%--40% according to measuring and calculating.
3, to have denitration desulfuration efficiency high for product of the present invention, and non-secondary pollution reduces haze, and protection of the environment, is conducive to the mankind's health and social development.
The special denitration desulfurization of the chimney ammoniacal liquor of our invention is a kind of cheap, and by-product recovery is convenient, and broad-spectrum, therefore the present invention is a kind of new denitration sulfur method, is a significant benefit to environmental protection.
Detailed description of the invention
The special ammoniacal liquor of a kind of chimney denitration desulfurization, it is containing NH
35%--40% (percentage by weight), all the other are water.Water is following any one or mixture: 1. natural running water preparation; 2. through the softening soft water preparation of processing; 3. prepare through the pure water of first-stage reverse osmosis; 4. prepare through the high purity water of two-pass reverse osmosis.
Described special ammoniacal liquor manufacturing process, it is realized according to following any one:
1. natural running water preparation ammoniacal liquor: adopt natural running water to enter ammoniacal liquor through aqueduct and manufacture in tank, when this water fluid level reaches tank internal volume 60%, open liquid ammonia storage tank valve or send ammonia tank valve (liquid phase) and ammonia water tank drain tap on ammonia car, (gas phase) makes 99.5%--99.8%NH
3slowly enter ammoniacal liquor and manufacture in tank, use NH
3spray-on process, makes liquefied ammonia be combined with water, absorbs, and manufactures containing NH
3the special ammoniacal liquor of denitration desulfurization of 5%--40%;
2. soft water preparation ammoniacal liquor: adopt running water to enter ammoniacal liquor through demineralized water soft water after treatment and manufacture in tank, when this water liquid level reaches tank internal volume 60%, open NH
3storage tank or transport ammonia car ammonia tank valve (liquid phase) and ammonia water tank drain tap (gas phase) makes 99.5%--99.8NH
3slowly enter ammoniacal liquor and manufacture in tank, adopt NH3 spray-on process to make liquefied ammonia and soft water combination, absorb, make containing NH
3the special soft water ammoniacal liquor of chimney denitration desulfurization of 5%--40%;
3. pure water is manufactured ammoniacal liquor: adopt water treatment system that soft water after treatment enters first-stage reverse osmosis again pure water after treatment, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, ammonia tank valve (liquid phase) and the ammonia water tank drain tap (gas phase) of opening liquid ammonia storage tank valve or transport on liquefied ammonia automobile make content in 99.5%--99.8% liquefied ammonia slowly enters ammoniacal liquor manufacture tank, adopt NH3 spray-on process to make liquefied ammonia and pure water combination, absorb, make NH3 content at the special ammoniacal liquor of 5%--40% chimney denitration desulfurization, ammoniacal liquor metallic residue content≤0.3, be difficult for muddy, transparently be greater than 80%,
4. high purity water is manufactured ammoniacal liquor: adopt running water high purity water through two-pass reverse osmosis processing again after softening processing, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, open liquid ammonia storage tank valve or transport ammonia tank valve (liquid phase) and the ammonia water tank drain tap (gas phase) on the automobile of liquefied ammonia, making content slowly enter ammoniacal liquor at 99.5%--99.8% liquefied ammonia manufactures in tank, adopt NH3 spray-on process to make liquefied ammonia and high purity water combination, absorb, manufacture NH
3the high purity water ammoniacal liquor of content 5%--40%, gained ammoniacal liquor residue content≤0.2, pure, bright, electrical conductivity is lower than 0.00012.
Claims (3)
1. the special ammoniacal liquor of chimney denitration desulfurization, is characterized in that containing NH
35%--40%, all the other are water, by weight percentage amount.
2. the special ammoniacal liquor of a kind of chimney denitration desulfurization according to claim 1, is characterized in that water is following any one or mixture: 1. natural running water preparation; 2. through the softening soft water preparation of processing; 3. prepare through the pure water of first-stage reverse osmosis; 4. prepare through the high purity water of two-pass reverse osmosis.
3. the special ammoniacal liquor manufacturing process as described in claim 1-2, is characterized in that realizing according to following any one:
1. natural running water preparation ammoniacal liquor: adopt natural running water to enter ammoniacal liquor through aqueduct and manufacture in tank, when this water fluid level reaches tank internal volume 60%, open liquid ammonia storage tank valve or send ammonia tank valve (liquid phase) and ammonia water tank drain tap (gas phase) on ammonia car to make 99.5%--99.8%NH
3slowly enter ammoniacal liquor and manufacture in tank, adopt NH
3spray-on process, makes liquefied ammonia be combined with water, absorbs, and manufactures containing NH
3the special ammoniacal liquor of denitration desulfurization of 5%--40%;
2. soft water preparation ammoniacal liquor: adopt running water to enter ammoniacal liquor through demineralized water soft water after treatment and manufacture in tank, when this water liquid level reaches tank internal volume 60%, open NH
3storage tank or transport ammonia car ammonia tank valve (liquid phase) and ammonia water tank drain tap (gas phase) makes 99.5%--99.8NH
3slowly enter ammoniacal liquor and manufacture in tank, make liquefied ammonia and soft water combination by spray-on process, absorb, make containing NH
3the special soft water ammoniacal liquor of chimney denitration desulfurization of 5%--40%;
3. pure water is manufactured ammoniacal liquor: adopt water treatment system that soft water after treatment enters first-stage reverse osmosis again pure water after treatment, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, ammonia tank valve (liquid phase) and the ammonia water tank drain tap (gas phase) of opening liquid ammonia storage tank valve or transport on liquefied ammonia automobile make content in 99.5%--99.8% liquefied ammonia slowly enters ammoniacal liquor manufacture tank, adopt spray-on process to make liquefied ammonia and pure water combination, absorb, make ammonia content at the special ammoniacal liquor of 5%--40% chimney denitration desulfurization, ammoniacal liquor metallic residue content≤0.3, be difficult for muddy, transparently be greater than 80%,
4. high purity water is manufactured ammoniacal liquor: adopt running water high purity water through two-pass reverse osmosis processing again after softening processing, entering ammoniacal liquor manufactures in tank, when this water liquid level reaches tank internal volume 60%, open liquid ammonia storage tank valve or transport ammonia tank valve (liquid phase) and the ammonia water tank drain tap (gas phase) on the automobile of liquefied ammonia, making content slowly enter ammoniacal liquor at 99.5%--99.8% liquefied ammonia manufactures in tank, adopt spray-on process to make liquefied ammonia and high purity water combination, absorb, manufacture NH
3the high purity water ammoniacal liquor of content 5%--40%, gained ammoniacal liquor residue content≤0.2, pure, bright, electrical conductivity is lower than 0.00012.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410351086.2A CN104096470A (en) | 2014-07-23 | 2014-07-23 | Preparation method and manufacturing process for ammonia special for denitration and desulfurization of chimney flue gas |
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| CN201410351086.2A CN104096470A (en) | 2014-07-23 | 2014-07-23 | Preparation method and manufacturing process for ammonia special for denitration and desulfurization of chimney flue gas |
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013868A1 (en) * | 1993-11-19 | 1995-05-26 | Mitsui Mining Co., Ltd. | Method of manufacturing active cokes for simultaneous desulfurization and denitration processes |
| CN103641137A (en) * | 2013-11-29 | 2014-03-19 | 周凯 | Ammonia water special for chimney desulfurization and preparation process of ammonia water |
| CN103801387A (en) * | 2012-11-15 | 2014-05-21 | 中国海洋大学 | Carbocoal-based photo-catalytic oxidation fuel gas desulfurization and denitration agent and preparation method thereof |
-
2014
- 2014-07-23 CN CN201410351086.2A patent/CN104096470A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1995013868A1 (en) * | 1993-11-19 | 1995-05-26 | Mitsui Mining Co., Ltd. | Method of manufacturing active cokes for simultaneous desulfurization and denitration processes |
| CN103801387A (en) * | 2012-11-15 | 2014-05-21 | 中国海洋大学 | Carbocoal-based photo-catalytic oxidation fuel gas desulfurization and denitration agent and preparation method thereof |
| CN103641137A (en) * | 2013-11-29 | 2014-03-19 | 周凯 | Ammonia water special for chimney desulfurization and preparation process of ammonia water |
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Application publication date: 20141015 |
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