CN207259404U - A kind of S-based compound fertilizer heat reclaim unit - Google Patents
A kind of S-based compound fertilizer heat reclaim unit Download PDFInfo
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- CN207259404U CN207259404U CN201721085856.9U CN201721085856U CN207259404U CN 207259404 U CN207259404 U CN 207259404U CN 201721085856 U CN201721085856 U CN 201721085856U CN 207259404 U CN207259404 U CN 207259404U
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- air
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- comminutor
- heat exchanger
- outlet
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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
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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Abstract
The utility model belongs to a kind of S-based compound fertilizer heat reclaim unit；Including drying comminutor, the offgas outlet for drying comminutor is connected by the inlet exhaust gas of air heat exchanger with the tail gas generated by granulation outlet of air heat exchanger, the air at room temperature import of air heat exchanger is connected with the hot air outlet of air heat exchanger, hot air outlet is connected by the first threeway with air at room temperature pipeline, 3rd end of the first threeway is connected by the second threeway with hot wind outlet of still, 3rd end of the second threeway is connected by air-introduced machine with drying the hot-air inlets of comminutor, the air at room temperature pipeline is connected by air blower with hot-blast stove import, the bottom of the drying comminutor is exported equipped with compound fertilizer granules, the side of the drying comminutor is equipped with composite fertilizer material feed slurry inlet；With it is simple in structure, design is reasonable, can reduce tail gas generated by granulation temperature, the energy for being reduced to reduce temperature of washing water and consuming, the advantages of improving washing effect.
Description
Technical field
The utility model belongs to slurry-spraying pelletizing S-based compound fertilizer technical field, and in particular to a kind of S-based compound fertilizer heat returns
Receiving apparatus.
Background technology
Element sulphur in S-based compound fertilizer is the fourth-largest nutrient after nitrogen, phosphorus, potassium, can be effectively improved in soil
A lack of sulfur situation, can effectively improve appearance, the quality of all kinds of industrial crops, particularly avoid potato, watermelon, beet etc. chlorine work
Thing, S-based compound fertilizer are even more indispensable.
Country's production of sulfur-based compound fertilizer generally uses low temperature conversion slurry-spraying pelletizing technique at present：Potassium chloride is anti-with the concentrated sulfuric acid
Should, the potassium hydrogen sulfate solution without chlorine element is obtained, while the technical hydrochloric acid that by-product concentration is 31%wt.Then through potassium acid sulfate
Solution is mixed and made into nitration mixture slurry with monoammonium phosphate, urea；After in tubular reactor with ammonia neutralization reaction occurs for nitration mixture slurry,
Spray into coating granulating in drying comminutor and obtain compound fertilizer granules；Finally packed out again after the processing such as screened, cooling, coating
Sell.Wherein drying comminutor is the core equipment of production of sulfur-based compound fertilizer.Contain due to spraying into the slurry dried in comminutor
A certain amount of moisture (20%-30%wt), needs, by slurry flash baking, moisture to be removed, to obtain hardness, appearance in granulation
Deng the compound fertilizer granules for all meeting product requirement.Drying course is generally carried out using up to 450 DEG C or so of hot-air, and heat is empty
Air at room temperature is heated to 800-1000 DEG C by gas using hot-blast stove, is re-introduced into air at room temperature temperature adjustment and is made to being blown into whitewashing after 450 DEG C
Grain machine.Particle by drying enters the subsequent handlings such as screening, and the damp and hot tail gas generated by granulation containing moisture is by cleaning dust, cloth
The processing such as bag dedusting, electric precipitation are discharged into air after reaching discharge standard.The exhaust temperature of comminutor discharge is about 300 DEG C -350
DEG C, the cooling and dedusting in washing process in Venturi scrubber, water scrubber, and pernicious gas therein is absorbed, tail gas amount is reachable
70000-90000m3/ h (by taking 100,000 tons/year of production lines as an example).The heat of one side tail gas is not recycled to utilize and causes
The significant wastage of the energy；On the other hand, meeting heat cycles washings in washing process, decline washing effect；To maintain to wash
Effect, also needs in addition to set cooling tower or evaporative condenser etc. to cool down washings, otherwise can increase follow-up dedusting system sometimes
The load of system, it is difficult to realize qualified discharge.
Utility model content
The purpose of the utility model is to overcome in the prior art the defects of, and provide a kind of simple in structure, design rationally,
Tail gas generated by granulation temperature can be reduced, a kind of energy for being reduced to reduction temperature of washing water and consuming, the sulfenyl for improving washing effect is answered
Hefei heat reclaim unit.
What the purpose of this utility model was realized in：Including drying comminutor, the offgas outlet for drying comminutor passes through
The tail gas generated by granulation outlet of the inlet exhaust gas of air heat exchanger and air heat exchanger is connected, the air at room temperature import of air heat exchanger and
The hot air outlet of air heat exchanger is connected, and hot air outlet is connected by the first threeway with air at room temperature pipeline, and the one or three
The 3rd logical end is connected by the second threeway with hot wind outlet of still, and the 3rd end of the second threeway passes through air-introduced machine and drying comminutor
Hot-air inlets be connected, the air at room temperature pipeline is connected by air blower with hot-blast stove import, the drying comminutor
Bottom is exported equipped with compound fertilizer granules, and the side of the drying comminutor is equipped with composite fertilizer material feed slurry inlet.
The utility model has simple in structure, design rationally, can reduce tail gas generated by granulation temperature, is reduced to reduce washing water temperature
The advantages of energy spent and consumed, raising washing effect.
Brief description of the drawings
Fig. 1 is the structure diagram of the utility model.
Embodiment
For a clearer understanding of the technical features, objectives and effects of the utility model, existing control brief description of the drawings
Specific embodiment of the present utility model, in the various figures identical label represent identical component.To make simplified form, in each figure
Only schematically show with the relevant part of utility model, they do not represent its practical structures as product.
As shown in Figure 1, the utility model is a kind of S-based compound fertilizer heat reclaim unit, including drying comminutor 1, drying
The offgas outlet 2 of comminutor 1 exports 15 phases by the inlet exhaust gas 4 of air heat exchanger 3 and the tail gas generated by granulation of air heat exchanger 3
Even, the air at room temperature import 14 of air heat exchanger 3 is connected with the hot air outlet 5 of air heat exchanger 3, and hot air outlet 5 is logical
Cross the first threeway 6 with air at room temperature pipeline 7 to be connected, the 3rd end of the first threeway 6 exports phase by the second threeway 8 and hot-blast stove 9
Even, the 3rd end of the second threeway 8 is connected by air-introduced machine 10 with drying the hot-air inlets 11 of comminutor 1, the air at room temperature
Pipeline 7 is connected by air blower 12 with 9 import of hot-blast stove, and the bottom of the drying comminutor 1 is equipped with compound fertilizer granules outlet 13,
The side of the drying comminutor 1 is equipped with composite fertilizer material feed slurry inlet 16.
The operation principle of the utility model is as follows：Dry the tail gas generated by granulation of comminutor 1 by the tail gas of air heat exchanger 3 into
Mouth 4 enters in air heat exchanger 3, exchanges heat with air at room temperature.Original washing system dedusting is gone through overcooled tail gas generated by granulation；Room temperature
Air granulation tail gas heating, 12 import of air blower of hot-blast stove 9 is entered under suction function, is added in hot-blast stove 9, or into
Enter to hot-blast stove 9 and export, after being mixed as tempering air with the outlet of hot-blast stove 9 hot-air, enter drying through air-introduced machine 10 and be granulated
Material drying in machine 1.
The utility model by air heat exchanger 3, heated using tail gas generated by granulation add to after air at room temperature hot-blast stove 9 into
Mouth is used as air-source, or adds to the outlet of hot-blast stove 9 as tempering air.Tail gas generated by granulation through air heat exchanger 3 cooling after,
100 DEG C or so are reduced to by 300 DEG C~350 DEG C, into washing system, it is (few to be conducive to pernicious gas in dedusting and tail gas generated by granulation
Measure ammonia, hydrogen chloride gas) absorption.Air at room temperature is after the heating of air heat exchanger 3, and temperature can increase to more than 200 DEG C, either
Into hot-blast stove 9, or as tempering air, the load of hot-blast stove 9 can be greatly lowered, reduce the fuel of hot-blast stove 9
(coal, natural gas or coal gas) expense, so as to save production cost.The tail gas generated by granulation of original 300 DEG C~350 DEG C of production equipment,
Washing system is directly entered, washes dedusting, one side heat is not utilized effectively, and causes the waste of the energy；The opposing party
Face can heat temperature of washing water, reduce the absorption of pernicious gas in dust removing effects and tail gas；To improve washing effect, it is sometimes desirable to
Add cooling tower or evaporation cold cools down washings.
And the utility model recycles the waste heat of tail gas generated by granulation using air heat exchanger, for heating air at room temperature, to save
The fuel consumption of hot-blast stove；, can be by naturally cold meanwhile the tail gas generated by granulation of relative low temperature is smaller to the temperature rise effect of washings
But the temperature of washings is kept, improves washing effect.
, it is necessary to which explanation, unless otherwise clearly defined and limited, term is " even in the description of the utility model
Connect ", " connected " etc. should be interpreted broadly, for example, it may be being fixedly connected, be integrally connected or be detachably connected；
It can also be the connection inside two elements；It can be directly connected, can also be indirectly connected by intermediary, for ability
For the those of ordinary skill in domain, concrete meaning of the above-mentioned term in the utility model can be understood as the case may be.Need
It is to be noted that herein, " first ", " second " etc. are only used for mutual differentiation, rather than represent their significance level and suitable
Sequence etc..Foregoing detailed description is illustrated only for the feasibility embodiment of the utility model, they are not used
To limit the scope of protection of the utility model, all equivalent implementations made without departing from the utility model skill spirit, change
It should be included within the scope of protection of this utility model with transformation.
Claims (1)
1. a kind of S-based compound fertilizer heat reclaim unit, including drying comminutor (1), it is characterised in that：Dry comminutor (1)
Offgas outlet (2) exports (15) phase by the inlet exhaust gas (4) of air heat exchanger (3) and the tail gas generated by granulation of air heat exchanger (3)
Even, the air at room temperature import (14) of air heat exchanger (3) is connected with the hot air outlet (5) of air heat exchanger (3), hot-air
Outlet (5) is connected by the first threeway (6) with air at room temperature pipeline (7), and the 3rd end of the first threeway (6) passes through the second threeway
(8) it is connected with hot-blast stove (9) outlet, the 3rd end of the second threeway (8) is empty by air-introduced machine (10) and the heat of drying comminutor (1)
Gas import (11) is connected, and the air at room temperature pipeline (7) is connected by air blower (12) with hot-blast stove (9) import, the drying
The bottom of comminutor (1) is equipped with compound fertilizer granules outlet (13), and the side of the drying comminutor (1) is equipped with composite fertilizer material material
Slurry inlet (16).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085856.9U CN207259404U (en) | 2017-08-21 | 2017-08-21 | A kind of S-based compound fertilizer heat reclaim unit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721085856.9U CN207259404U (en) | 2017-08-21 | 2017-08-21 | A kind of S-based compound fertilizer heat reclaim unit |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN207259404U true CN207259404U (en) | 2018-04-20 |
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ID=61923217
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201721085856.9U Active CN207259404U (en) | 2017-08-21 | 2017-08-21 | A kind of S-based compound fertilizer heat reclaim unit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN207259404U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109134041A (en) * | 2018-08-10 | 2019-01-04 | 遵义大兴复肥有限责任公司 | A kind of preparation method of compound fertilizer |
-
2017
- 2017-08-21 CN CN201721085856.9U patent/CN207259404U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109134041A (en) * | 2018-08-10 | 2019-01-04 | 遵义大兴复肥有限责任公司 | A kind of preparation method of compound fertilizer |
| CN109134041B (en) * | 2018-08-10 | 2021-10-12 | 遵义大兴复肥有限责任公司 | Preparation method of compound fertilizer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: 453731 Xinxiang Economic Development Zone, Henan Province (Xiaoji Town) Patentee after: Henan Xinlianxin Chemical Industry Group Co., Ltd. Address before: 453731 Henan Xinxiang Economic Development Zone Xiaoji Town Henan Xinlianxin Chemical Fertilizer Co., Ltd. Patentee before: Henan XInlianxin Fertiliser Limited Company |
|
| CP03 | Change of name, title or address |