CN101955209A - Waste steam heat recycling method in potassium nitrate production - Google Patents
Waste steam heat recycling method in potassium nitrate production Download PDFInfo
- Publication number
- CN101955209A CN101955209A CN2010105013828A CN201010501382A CN101955209A CN 101955209 A CN101955209 A CN 101955209A CN 2010105013828 A CN2010105013828 A CN 2010105013828A CN 201010501382 A CN201010501382 A CN 201010501382A CN 101955209 A CN101955209 A CN 101955209A
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- CN
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- Prior art keywords
- production
- steam
- boiler
- potassium nitrate
- concentration device
- 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.)
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- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title claims abstract description 28
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 27
- 238000000034 method Methods 0.000 title claims abstract description 21
- 235000010333 potassium nitrate Nutrition 0.000 title claims abstract description 14
- 239000004323 potassium nitrate Substances 0.000 title claims abstract description 14
- 238000004064 recycling Methods 0.000 title claims abstract description 10
- 239000002699 waste material Substances 0.000 title abstract 3
- 238000001035 drying Methods 0.000 claims abstract description 18
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 10
- WCUXLLCKKVVCTQ-UHFFFAOYSA-M Potassium chloride Chemical compound [Cl-].[K+] WCUXLLCKKVVCTQ-UHFFFAOYSA-M 0.000 claims abstract description 5
- 238000000354 decomposition reaction Methods 0.000 claims abstract description 5
- 239000002994 raw material Substances 0.000 claims abstract description 5
- PAWQVTBBRAZDMG-UHFFFAOYSA-N 2-(3-bromo-2-fluorophenyl)acetic acid Chemical compound OC(=O)CC1=CC=CC(Br)=C1F PAWQVTBBRAZDMG-UHFFFAOYSA-N 0.000 claims abstract description 4
- 238000010992 reflux Methods 0.000 claims abstract description 3
- 238000001704 evaporation Methods 0.000 claims description 12
- 230000008020 evaporation Effects 0.000 claims description 12
- 238000009434 installation Methods 0.000 claims description 9
- 239000002918 waste heat Substances 0.000 claims description 9
- 238000009833 condensation Methods 0.000 claims description 7
- 230000005494 condensation Effects 0.000 claims description 7
- 239000007789 gas Substances 0.000 claims description 5
- 238000004134 energy conservation Methods 0.000 abstract 1
- 238000002156 mixing Methods 0.000 abstract 1
- 235000011164 potassium chloride Nutrition 0.000 abstract 1
- 239000001103 potassium chloride Substances 0.000 abstract 1
- 239000013589 supplement Substances 0.000 abstract 1
- 238000009834 vaporization Methods 0.000 abstract 1
- 230000008016 vaporization Effects 0.000 abstract 1
- 238000010438 heat treatment Methods 0.000 description 8
- 239000012452 mother liquor Substances 0.000 description 4
- 238000007599 discharging Methods 0.000 description 3
- 230000021715 photosynthesis, light harvesting Effects 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 239000012943 hotmelt Substances 0.000 description 1
- 230000008676 import Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000746 purification Methods 0.000 description 1
- -1 this Chemical compound 0.000 description 1
- 239000006200 vaporizer Substances 0.000 description 1
Images
Classifications
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
-
- 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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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- Drying Of Solid Materials (AREA)
- Processing Of Solid Wastes (AREA)
- Vaporization, Distillation, Condensation, Sublimation, And Cold Traps (AREA)
Abstract
The invention discloses a waste steam heat recycling method in potassium nitrate production. Potassium chloride and ammonium nitrate are taken as raw materials and subjected to a double decomposition method production process; in the production process, waste steam heat and tail gas discharged by a mixing reaction unit, a vaporization and concentration device and a drying device are concentrated and recycled in a preheating device; and finally condensed water subjected to heat exchange refluxes to a boiler to serve as water for supplement. Therefore, the method has the advantages of saving energy, greatly reducing production cost and meeting the national policy requirement of energy conservation and emission reduction.
Description
Technical field: the present invention relates to steam recycling residual heat method in the recycling of steam waste heat in a kind of process for producing potassium nitrate, particularly Production of Potassium Nitrate.
Background technology: saltpetre is as important Inorganic Chemicals, and it is widely used in every profession and trades such as worker, agricultural and food chemical industry.The production of existing saltpetre generally with Repone K and ammonium nitrate as raw material, adopt the double decomposition production technique to produce, need to use a large amount of steam to be used as producing thermal source in the double decomposition production process and utilize; When usually it is produced with the thermal source of boiler as steam, the steam that boiler produces heats to quicken raw-material dissolving the mother liquor in the batching reactor, thermosol purification work in-process, the oven dry product, carry out direct heating or oven dry with moisture eliminator such as pan dryer etc., and generally adopt high-temperature pipe, external heating mode carries out, afterheat steam after the use directly effluxes does not usually do recycling, the mode of steam source is used in this production, energy dissipation is big, because of hot steam usage quantity in the production saltpetre process is big, accounts for the production cost height, thereby just increase substantially production cost of products, and do not meet the policy requirements of national energy-saving and emission-reduction.
Summary of the invention: the invention provides steam recycling residual heat method in a kind of Production of Potassium Nitrate, its steam tail gas that will discharge from produce each operation is concentrated and is recovered in the primary heater unit, after the condensate return after the heat exchange to boiler makes to replenish water, saved the energy like this, and significantly reduced production cost, meet the policy requirements of national energy-saving and emission-reduction.
Technical solution of the present invention is to be that raw material adopts the double decomposition circulation process production technique with Repone K and ammonium nitrate like this, comprise boiler, primary heater unit, batching reaction unit, evaporation concentration device and drying installation, enter batching reaction unit, evaporation concentration device, reach the drying installation from the hot steam of boiler output, it is to be recovered in the primary heater unit by the steam waste heat tail gas that gives off in batching reaction unit, evaporation concentration device and the drying installation is concentrated from production process.
The present invention is entered by the water of condensation that gives off in the primary heater unit and makes dry heat-conducting medium in the pan dryer drying tray, and effusive water of condensation refluxes and is the additional water of boiler from described pan dryer drying tray.
The present invention utilizes the steam of discharging from boiler for producing respectively to the batching reaction unit, the drying installation of the vaporizer of evaporation concentration device and work in-process hot melt purifying plant and oven dry finished product operation carries out concentrated being recycled in the preheater that adds the hot mother liquor primary heater unit of steam using waste heat from tail gas behind the heat supply oven dry product, mother liquor to the needs heating preheats, so shortened in the actual production process heat-up time greatly to mother liquor, and the water of condensation of discharging from preheater imports in the drying tray of tray dryer machine the dry heat-conducting medium as the tray dryer machine again, to replace the heating steam heat conduction of directly coming in from boiler, be recovered to the additional water of making boiler in the hopper of making the additional water of boiler again through the water of condensation that the tray dryer machine is discharged, so just saved heating fuel greatly, thereby significantly reduce to produce and use heat, reduce production cost, met the policy requirements of national energy-saving and emission-reduction.
Description of drawings: Fig. 1 is a steam recycling residual heat schematic flow sheet of the present invention.
Among the figure: 1. boiler, 2. evaporation concentrator, 3. batching reactor, 4. moisture eliminator, 5. preheater, 6. pan drier.
Embodiment:As shown in Figure 1 the hot steam that produces by boiler 1 by steam-pipe respectively to the evaporation concentrator 2 of evaporation concentration device, the batching reactor 3 of batching reaction unit, and the moisture eliminator 4 of drying installation carries out steam heating; From evaporation concentrator 2, the using waste heat from tail gas that batching reactor 3 and moisture eliminator 4 are discharged promptly passes through the waste heat pipe connection on the preheater 5 of primary heater unit, and the condensed water discharge pipe on the preheater 5 is connected on the pan drier 6, make the heat-conducting medium in pan drier 6 drying trays, material in the pan drier 6 is carried out drying, and the water of condensation of discharging from pan drier 6 drying trays connects in the hopper enter in the boiler 1 as the additional water of boiler 1, and 5 pairs of solution mother liquors wherein of preheater adopt the pipe external heating modes to heat.
The present invention adopts steam recycling residual heat method, greatly reduce the Production of Potassium Nitrate cost, in the process for producing potassium nitrate, the steam waste heat that each operation of prior art gives off is fully recycled, and existing production technique is each step to need heating process separate, energy dissipation is big, does not meet the requirement of energy-saving and emission-reduction.
Claims (3)
1. steam waste heat recycle method in the Production of Potassium Nitrate, with Repone K and ammonium nitrate is that raw material adopts the double decomposition production technique, comprise boiler, primary heater unit, batching reaction unit, evaporation concentration device and drying installation, enter batching reaction unit, evaporation concentration device and the drying installation from the hot steam of boiler output, it is characterized in that in production process, being recovered in the primary heater unit by the steam waste heat tail gas that gives off in batching reaction unit, evaporation concentration device and the drying installation is concentrated.
2. according to steam recycling residual heat method in the described Production of Potassium Nitrate of claim 1, it is characterized in that entering and make dry heat-conducting medium in the pan dryer drying tray by the water of condensation that gives off in the primary heater unit; And effusive water of condensation refluxes and is the additional water of boiler from described pan dryer drying tray.
3. according to steam recycling residual heat method in the described Production of Potassium Nitrate of claim 1, it is characterized in that entering respectively batching reaction unit, evaporation concentration device and the drying installation from the hot steam of described boiler output.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105013828A CN101955209B (en) | 2010-10-09 | 2010-10-09 | Waste steam heat recycling method in potassium nitrate production |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010105013828A CN101955209B (en) | 2010-10-09 | 2010-10-09 | Waste steam heat recycling method in potassium nitrate production |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101955209A true CN101955209A (en) | 2011-01-26 |
| CN101955209B CN101955209B (en) | 2012-07-11 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2010105013828A Active CN101955209B (en) | 2010-10-09 | 2010-10-09 | Waste steam heat recycling method in potassium nitrate production |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101955209B (en) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922297A (en) * | 2013-01-15 | 2014-07-16 | 湖北六国化工股份有限公司 | Device for recycling waste heat during generation of ammonium phosphate |
| CN107973324A (en) * | 2018-01-18 | 2018-05-01 | 江西金利达钾业有限责任公司 | A kind of potassium nitrate semi-finished product separate pot |
| CN108534579A (en) * | 2018-02-24 | 2018-09-14 | 陈京帅 | A kind of energy conserving system and method for steam waste heat recycling |
| CN114249337A (en) * | 2020-09-21 | 2022-03-29 | 叶丹 | Method for separating and purifying potassium nitrate by utilizing high-temperature potassium nitrate waste salt molten liquid |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3595609A (en) * | 1969-10-13 | 1971-07-27 | Allied Chem | Cyclic process for producing potassium nitrate and ammonium chloride |
| CN101628723A (en) * | 2009-08-18 | 2010-01-20 | 湖南丹化农资有限公司 | Method for preparing potassium nitrate and ammonium chloride employing double decomposition reaction |
-
2010
- 2010-10-09 CN CN2010105013828A patent/CN101955209B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3595609A (en) * | 1969-10-13 | 1971-07-27 | Allied Chem | Cyclic process for producing potassium nitrate and ammonium chloride |
| CN101628723A (en) * | 2009-08-18 | 2010-01-20 | 湖南丹化农资有限公司 | Method for preparing potassium nitrate and ammonium chloride employing double decomposition reaction |
Non-Patent Citations (1)
| Title |
|---|
| 《化学工业》 20100131 张罡 硝酸钾生产节能技术应用 第31-33页 1-3 第28卷, 第1期 2 * |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103922297A (en) * | 2013-01-15 | 2014-07-16 | 湖北六国化工股份有限公司 | Device for recycling waste heat during generation of ammonium phosphate |
| CN107973324A (en) * | 2018-01-18 | 2018-05-01 | 江西金利达钾业有限责任公司 | A kind of potassium nitrate semi-finished product separate pot |
| CN108534579A (en) * | 2018-02-24 | 2018-09-14 | 陈京帅 | A kind of energy conserving system and method for steam waste heat recycling |
| CN114249337A (en) * | 2020-09-21 | 2022-03-29 | 叶丹 | Method for separating and purifying potassium nitrate by utilizing high-temperature potassium nitrate waste salt molten liquid |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101955209B (en) | 2012-07-11 |
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Application publication date: 20110126 Assignee: Tengda Jiangxi Industrial Co.,Ltd. Assignor: Zhao Jiachun|Zhao Chen Contract record no.: 2016360000008 Denomination of invention: Waste steam heat recycling method in potassium nitrate production Granted publication date: 20120711 License type: Exclusive License Record date: 20160712 |
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| LICC | Enforcement, change and cancellation of record of contracts on the licence for exploitation of a patent or utility model | ||
| C41 | Transfer of patent application or patent right or utility model | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20160811 Address after: 336000 Yichun economic and Technological Development Zone, Jiangxi Patentee after: Tengda Jiangxi Industrial Co.,Ltd. Address before: 336000 Tengda Chemical Industry Co., Ltd., Yichun Economic Development Zone, Jiangxi Patentee before: Zhao Jiachun Patentee before: Zhao Chen |
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Effective date of registration: 20210420 Address after: 336200 eco economic Park, Tonggu County, Yichun, Jiangxi Patentee after: Jiangxi Jintai chemical new material Co.,Ltd. Address before: 336000 Yichun economic and Technological Development Zone, Jiangxi Patentee before: Tengda Jiangxi Industrial Co.,Ltd. |
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Effective date of registration: 20240410 Address after: 336000 No.8, Jingfa Avenue, Yichun economic and Technological Development Zone, Yichun City, Jiangxi Province Patentee after: Golden potassium Technology Co.,Ltd. Country or region after: China Address before: 336200 Tonggu ecological economic Park, Yichun City, Jiangxi Province Patentee before: Jiangxi Jintai chemical new material Co.,Ltd. Country or region before: China |
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