CN101955209B - Waste steam heat recycling method in potassium nitrate production - Google Patents
Waste steam heat recycling method in potassium nitrate production Download PDFInfo
- Publication number
- CN101955209B CN101955209B CN2010105013828A CN201010501382A CN101955209B CN 101955209 B CN101955209 B CN 101955209B CN 2010105013828 A CN2010105013828 A CN 2010105013828A CN 201010501382 A CN201010501382 A CN 201010501382A CN 101955209 B CN101955209 B CN 101955209B
- Authority
- CN
- China
- Prior art keywords
- boiler
- production
- steam
- water
- potassium nitrate
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 24
- FGIUAXJPYTZDNR-UHFFFAOYSA-N potassium nitrate Chemical compound [K+].[O-][N+]([O-])=O FGIUAXJPYTZDNR-UHFFFAOYSA-N 0.000 title claims abstract description 24
- 238000000034 method Methods 0.000 title claims abstract description 19
- 235000010333 potassium nitrate Nutrition 0.000 title claims abstract description 12
- 239000004323 potassium nitrate Substances 0.000 title claims abstract description 12
- 238000004064 recycling Methods 0.000 title abstract description 8
- 239000002699 waste material Substances 0.000 title abstract 3
- 238000001035 drying Methods 0.000 claims abstract description 17
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000006243 chemical reaction Methods 0.000 claims abstract description 9
- 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 11
- 230000008020 evaporation Effects 0.000 claims description 11
- 239000002918 waste heat Substances 0.000 claims description 9
- 238000009434 installation Methods 0.000 claims description 8
- 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
- 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
Landscapes
- Processing Of Solid Wastes (AREA)
- Drying Of Solid Materials (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 an ammonium nitrate as raw material, adopt the double decomposition production technique to produce, need in the double decomposition production process to use a large amount of steam be used as producing thermal source and utilize; With the thermal source of boiler as steam, the steam that boiler produces heated to quicken raw-material dissolving, thermosol purification work in-process, oven dry product the mother liquor in the batching reactor drum when it was produced usually; 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, and the mode of steam source is used in this production, and energy dissipation is big; Big because of producing in the saltpetre process hot steam usage quantity; Account 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 present invention provides steam recycling residual heat method in a kind of Production of Potassium Nitrate; Its steam tail gas that will from produce each operation, discharge is concentrated and is recovered in the preheating unit; After the condensate return after the heat exchange to boiler makes to replenish water; Practice thrift the energy like this, and significantly reduced production cost, met the policy requirements of national energy-saving and emission-reduction.
Technical scheme of the present invention is to be that raw material adopts the double decomposition circulation process production technique with Repone K and an ammonium nitrate like this; Comprise boiler, preheating unit, batching reaction unit, evaporation concentration device and drying installation; The hot steam of exporting from boiler gets into batching reaction unit, evaporation concentration device, reaches the drying installation, and it is from production process, to be recovered in the preheating unit by the steam waste heat tail gas that gives off in batching reaction unit, evaporation concentration device and the drying installation is concentrated.
The present invention is got in the pan dryer drying tray by the water of condensation that gives off in the preheating unit and makes dry heat-conducting medium, and effusive water of condensation refluxes and is the additional water of boiler from said 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 preheating 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 from preheater, discharging imports in the drying tray of tray dryer machine the dry heat-conducting medium as the tray dryer machine again, replacing the heating steam heat conduction of directly coming in from boiler, is recovered to the additional water of making to do in the hopper that boiler replenishes water boiler again through the water of condensation that the tray dryer machine is discharged; So just practiced thrift heating fuel greatly; Thereby significantly reduce to produce and use heat, reduced production cost, meet 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 drum, 4. moisture eliminator, 5. preheater, 6. pan drier.
Embodiment:The hot steam that is produced by boiler 1 as shown in Figure 1 is passed through steam-pipe respectively to the evaporation concentrator 2 of evaporation concentration device, the batching reactor drum 3 of the reaction unit of preparing burden, 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 drum 3 and moisture eliminator 4 are discharged promptly passes through the waste heat pipe connection on the preheater 5 of preheating 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; Materials in the pan drier 6 carry out drying, and the water of condensation of from pan drier 6 drying trays, discharging connects in the hopper that gets 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 (1)
1. steam waste heat recycle method in the Production of Potassium Nitrate; With Repone K and an ammonium nitrate is that raw material adopts the double decomposition production technique; Comprise boiler, preheating unit, batching reaction unit, evaporation concentration device and drying installation; Get into 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 preheating unit by the steam waste heat tail gas that gives off in batching reaction unit, evaporation concentration device and the drying installation is concentrated; By making dry heat-conducting medium in the water of condensation entering pan dryer drying tray that gives off in the preheating unit; And effusive water of condensation refluxes and is the additional water of boiler from said pan dryer drying tray.
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 CN101955209A (en) | 2011-01-26 |
| CN101955209B true CN101955209B (en) | 2012-07-11 |
Family
ID=43482839
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) |
Families Citing this family (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 |
Family Cites Families (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 |
| CN101628723B (en) * | 2009-08-18 | 2011-09-28 | 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
Also Published As
| Publication number | Publication date |
|---|---|
| CN101955209A (en) | 2011-01-26 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101708942B (en) | Sludge drying system and using method thereof | |
| CN101955209B (en) | Waste steam heat recycling method in potassium nitrate production | |
| CN102311216A (en) | Separated thermal cycle sludge dry method and device thereof | |
| CN106475398A (en) | A kind of industrial waste salt carbonization treatment method | |
| CN104787823B (en) | Yeast wastewater Zero discharge treatment method | |
| CN105737167B (en) | Heat accumulating type rotating bed segmentation utilizes the method and system of carbonaceous organic material thermal decomposition product | |
| CN109134220A (en) | A kind of oxidizing process produces high-concentration formaldehyde system and its technique | |
| CN205740829U (en) | Extend methylamine catalyst and use the catalyst application apparatus in cycle | |
| CN102161484B (en) | Zero-coal-consumption activated carbon production process and production device used in same | |
| CN104386709B (en) | Hydrolysis of urea reactor with waste-heat recovery device | |
| CN101607922A (en) | A kind of preparation method of acrylamide crystal | |
| CN206669707U (en) | A kind of residual neat recovering system for boiler water cycle | |
| CN102748923B (en) | Method for drying coal slime | |
| CN103432974A (en) | Deaminizing and dewatering technology and special device for sodium persulfate (salt) synthetic fluid | |
| CN102020257A (en) | New technology of applying double-effect forced circulation concentration method in production of ammonium phosphate | |
| CN103708516B (en) | Efficient energy-saving spray drying and automatic packaging method for producing powdery polyaluminum chloride | |
| CN104310441A (en) | Reaction heat comprehensive utilization system and reaction heat comprehensive utilization method in coproduction of potassium nitrate and ammonium chloride | |
| CN101077855B (en) | Technique and device for continuously dehydrogenating and producing sodium oxalate by dehydrogenation reaction remaining heat | |
| CN209173409U (en) | Energy saver is used in connection alkali production | |
| CN202080897U (en) | Active carbon production device with zero coal consumption | |
| CN202527174U (en) | Reaction kettle for detachably producing D-ethyl ester by using DL-ethyl ester | |
| CN206069957U (en) | A kind of device of preheating sinter mixture | |
| CN105797414A (en) | Industrial waste heat recycling method and device | |
| CN205448540U (en) | Precipitated calcium carbonate production flue waste heat is drying device in advance | |
| CN102454133B (en) | Pulping agent and application and production method thereof |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| EE01 | Entry into force of recordation of patent licensing contract |
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 |
|
| 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 |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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. |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
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 |