CN108484253A - A kind of coal base nutrient for plants preparation method - Google Patents
A kind of coal base nutrient for plants preparation method Download PDFInfo
- Publication number
- CN108484253A CN108484253A CN201810163084.9A CN201810163084A CN108484253A CN 108484253 A CN108484253 A CN 108484253A CN 201810163084 A CN201810163084 A CN 201810163084A CN 108484253 A CN108484253 A CN 108484253A
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- CN
- China
- Prior art keywords
- grain size
- compound fertilizer
- fertilizer granules
- comminutor
- dust
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Classifications
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F26—DRYING
- F26B—DRYING SOLID MATERIALS OR OBJECTS BY REMOVING LIQUID THEREFROM
- F26B21/00—Arrangements or duct systems, e.g. in combination with pallet boxes, for supplying and controlling air or gases for drying solid materials or objects
- F26B21/06—Controlling, e.g. regulating, parameters of gas supply
- F26B21/10—Temperature; Pressure
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Pest Control & Pesticides (AREA)
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The present invention relates to a kind of coal base nutrient for plants preparation methods, and this approach includes the following steps：(1) composite fertilizer material powder is granulated through comminutor, obtains compound fertilizer granules；(2) compound fertilizer granules are dried through steam-tube rotatory dryer, respectively obtain the compound fertilizer granules after drying and temperature as 85 ~ 110 DEG C of dust-laden water vapour；(3) the compound fertilizer granules after drying respectively obtain grain size and are less than 2.5mm particles for the particle and grain size of 2.5mm ~ 4.75mm respectively through primary vibration sieve, secondary vibration sieve screening；It is packed as coal base nutrient for plants product after the particle cooling that grain size is 2.5mm ~ 4.75mm；Grain size enters less than 2.5mm particles in comminutor to be granulated again；(4) the dust-laden water vapour that temperature is 85 ~ 110 DEG C dust removal by filtration in bag filter, respectively obtains dust and purified carrier gas；Dust enters through conveyer in comminutor to be granulated again；(5) purified carrier gas is washed, cooling, dehumidifying, and water after washing realizes the clean recycling of water using the method for flash distillation cooling.The present invention is safe and reliable, water use efficiency is high.
Description
Technical field
The present invention relates to composite fertilizer's drying and granulating technique fields more particularly to a kind of coal base nutrient for plants preparation side
Method.
Background technology
It is essential workshop section that composite fertilizer is dry, granulation is during composite heat transfer, mainly there is use at this stage
Steam or conduction oil are the heat-conduction-type dry technology of heat source and flue gas are used to be in direct contact with heat smoke for the composite fertilizer of heat source
Air-flowing type dry technology, regardless of its composite fertilizer of technology dry after tail gas be all the direct emission after dedusting.By
It is inflammable, explosive in part composite fertilizer, it is prevented in the drying process although all controlling the oxygen content of carrier gas or flue gas in drying process
Composite fertilizer's spontaneous combustion occurs or sudden strain of a muscle is quick-fried, still, due to factors such as misoperation or equipment dependabilities, composite fertilizer's drying system still holds
Spontaneous combustion easily occurs or dodges quick-fried.And in order to reduce as far as possible due to dry exhaust emissions and caused by unnecessary heat loss, do
Dry process is generally all by the very high of the dew point of emission control, this just inevitably " Bai Long " phenomenon.
Invention content
Technical problem to be solved by the invention is to provide a kind of coal base nutrient for plants systems effectively improving security performance
Preparation Method.
To solve the above problems, a kind of coal base nutrient for plants preparation method of the present invention, includes the following steps：
(1) composite fertilizer material powder is entered by feed chute in comminutor, the composite fertilizer under the comminutor rotary action
Raw material powder and 70 ~ 90 DEG C of the hot water mixing granulation sprayed in the comminutor, obtain compound fertilizer granules；
(2) the compound fertilizer granules are entered by rotary valve I in steam-tube rotatory dryer, are fully connect with the tubulation filled with steam
Moisture is evaporated after touching heat exchange, respectively obtains the compound fertilizer granules after drying and temperature as 85 ~ 110 DEG C of dust-laden water vapour；
(3) the compound fertilizer granules after the drying enter primary vibration and are sieved, and respectively obtain grain size answering more than 4.75mm
Hefei particle and grain size are less than the compound fertilizer granules of 4.75mm；
Compound fertilizer granules of the grain size more than 4.75mm are crushed by rotary valve II into crusher, by defeated after being crushed
It send machine through the feed chute to enter in the comminutor to be granulated again；
Compound fertilizer granules of the grain size less than 4.75mm enter secondary vibration and are sieved, respectively obtain grain size for 2.5mm ~
The particle and grain size of 4.75mm is less than 2.5mm particles；The grain size is that the particle of 2.5mm ~ 4.75mm enters ridge type cooler
45 DEG C are cooled to hereinafter, and being packed by being used as coal base nutrient for plants product after rotary valve III；The grain size is less than
2.5mm particles enter conveyer by rotary valve IV, and enter in the comminutor through the feed chute and be granulated again；
(4) the dust-laden water vapour that the temperature is 85 ~ 110 DEG C is dried carrier gas and brings dust removal by filtration in bag filter into, respectively
To dust and purified carrier gas；The dust is discharged into the conveyer by rotary valve V, enters institute through the feed chute
It states in comminutor and is granulated again；
(5) the purified carrier gas enters from wash tower bottoms in the scrubbing tower, washed with washings counter current contacting, is cooling,
Dehumidifying, and between washings are heated to 70 ~ 90 DEG C, the carrier gas temperature after dehumidifying is reduced to 30 ~ 60 DEG C from the scrubbing tower
Portion is discharged, and is heated to 100 ~ 140 DEG C into heater after circulating fan pressurizes, the carrier gas after heating is turned round from the steam pipe
Drying machine feed end enters dryer cycle use；
The water that the scrubbing tower washs pressurizes after being mixed with the washings through circulating pump, and pressurization rear portion is allocated as using to be granulated
Water enters the comminutor, partly enters heat exchanger temperature adjustment, and the washings after temperature adjustment enter flash zone at the top of the scrubbing tower,
Washings recycle after flash cooled under 4.25 ~ 19.95kPaA pressure, and the steam and a small amount of fixed gas flashed off enters condensation
Device condenses, and the clean water recycling condensed out, a small amount of fixed gas is emptied by vacuum pump.
(4) middle dry carrier gas refers to nitrogen or other inert gases to the step.
Compared with the prior art, the present invention has the following advantages：
1, the present invention is recycled using inert gas, and system is safe and reliable.
2, the dry tail gas of the present invention is after bag filter filters, using scrubbing tower washing, cooling, dehumidifying, after washing
Water can realize the clean recycling of water using the method for flash distillation cooling, and at the same time solving emission " Bai Long " phenomenon.
3, with being recycled after water drying, condensation, water use efficiency is high for granulation of the present invention.
4, whole process non-wastewater discharge of the present invention, only a small amount of fixed gas discharge.
Description of the drawings
Specific embodiments of the present invention will be described in further detail below in conjunction with the accompanying drawings.
Fig. 1 is the general flow chart of the present invention.
In figure：1- comminutors, 2- rotary valves I, 3- steam-tube rotatory dryers, 4- primary vibrations sieve, 5- rotary valves II, 6-
Crusher, 7- conveyers, 8- secondary vibrations sieve, 9- ridge type coolers, 10- rotary valves III, 11- rotary valves IV, 12- cloth bags remove
Dirt device, 13- rotary valves V, 14- scrubbing towers, 15- circulating fans, 16- heaters, 17- circulating pumps, 18- heat exchangers, 19- condensations
Device, 20- vacuum pumps.
Specific implementation mode
As shown in Figure 1, a kind of coal base nutrient for plants preparation method, includes the following steps：
(1) composite fertilizer material powder is entered by feed chute in comminutor 1, in 1 rotary action compound fertilizer raw material powder of comminutor
End and 70 ~ 90 DEG C of the hot water mixing granulation sprayed in comminutor 1, obtain compound fertilizer granules.
(2) compound fertilizer granules are entered by rotary valve I 2 in steam-tube rotatory dryer 3, abundant with the tubulation filled with steam
Moisture is evaporated after contact heat-exchanging, respectively obtains the compound fertilizer granules after drying and temperature as 85 ~ 110 DEG C of dust-laden water vapour.
(3) the compound fertilizer granules after drying enter primary vibration sieve 4 and are sieved, and respectively obtain grain size more than 4.75mm's
Compound fertilizer granules and grain size are less than the compound fertilizer granules of 4.75mm.
Compound fertilizer granules of the grain size more than 4.75mm are crushed by rotary valve II 5 into crusher 6, are passed through after broken
Conveyer 7 enters through feed chute in comminutor 1 to be granulated again.
Compound fertilizer granules of the grain size less than 4.75mm enter secondary vibration sieve 8 and are sieved, and it is 2.5mm to respectively obtain grain size
The particle and grain size of ~ 4.75mm is less than 2.5mm particles；To enter ridge type cooler 9 cold for the particle that grain size is 2.5mm ~ 4.75mm
But to 45 DEG C hereinafter, and being packed by being used as coal base nutrient for plants product after rotary valve III 10；Grain size is less than 2.5mm
Grain enters conveyer 7 by rotary valve IV 11, and enters in comminutor 1 through feed chute and be granulated again.
(4) the dust-laden water vapour that temperature is 85 ~ 110 DEG C is dried carrier gas and brings dust removal by filtration in bag filter 12 into, respectively
Obtain dust and purified carrier gas；Dust is discharged into conveyer 7 by rotary valve V 13, enters in comminutor 1 through feed chute
It is granulated again.Wherein：Dry carrier gas refers to nitrogen or other inert gases.
(5) purified carrier gas enters from 14 bottom of scrubbing tower in scrubbing tower 14, washed with washings counter current contacting, is cooling,
Dehumidifying, and between washings are heated to 70 ~ 90 DEG C, the carrier gas temperature after dehumidifying is reduced to 30 ~ 60 DEG C from 14 middle part of scrubbing tower
Discharge is heated to 100 ~ 140 DEG C after the pressurization of circulating fan 15 into heater 16, and the carrier gas after heating is dry from steam pipe revolution
3 feed end of dry machine enters dryer cycle use.
The water that scrubbing tower 14 washs pressurizes after being mixed with washings through circulating pump 17, and pressurization rear portion is allocated as using to be granulated
Water enters comminutor 1, partly enters 18 temperature adjustment of heat exchanger, and the washings after temperature adjustment enter 14 top flash zone of scrubbing tower,
Washings recycle after flash cooled under 4.25 ~ 19.95kPaA pressure, and the steam and a small amount of fixed gas flashed off enters condensation
Device 19 condenses, and the clean water recycling condensed out, a small amount of fixed gas is emptied by vacuum pump 20.
Claims (2)
1. a kind of coal base nutrient for plants preparation method, includes the following steps：
(1) composite fertilizer material powder enters comminutor by feed chute（1）It is interior, in the comminutor（1）It is described under rotary action
Composite fertilizer material powder and the comminutor（1）70 ~ 90 DEG C of hot water mixing granulation of interior sprinkling, obtains compound fertilizer granules；
(2) the compound fertilizer granules pass through rotary valve I（2）Into steam-tube rotatory dryer（3）It is interior, with the tubulation filled with steam
Moisture is evaporated after coming into full contact with heat exchange, is respectively obtained the compound fertilizer granules after drying and temperature and is steamed for 85 ~ 110 DEG C of dust-containing water
Vapour；
(3) the compound fertilizer granules after the drying enter primary vibration sieve（4）It is sieved, respectively obtains grain size and be more than 4.75mm
Compound fertilizer granules and grain size be less than 4.75mm compound fertilizer granules；
Compound fertilizer granules of the grain size more than 4.75mm pass through rotary valve II（5）Into crusher（6）It is crushed, after being crushed
Pass through conveyer（7）Enter the comminutor through the feed chute（1）Inside it is granulated again；
Compound fertilizer granules of the grain size less than 4.75mm enter secondary vibration sieve（8）It is sieved, respectively obtaining grain size is
The particle and grain size of 2.5mm ~ 4.75mm is less than 2.5mm particles；The grain size is that the particle of 2.5mm ~ 4.75mm enters ridge type
Cooler（9）45 DEG C are cooled to hereinafter, and by rotary valve III（10）It is packed afterwards as coal base nutrient for plants product；Institute
It states grain size and passes through rotary valve IV less than 2.5mm particles（11）Into conveyer（7）, and enter the granulation through the feed chute
Machine（1）Inside it is granulated again；
(4) the dust-laden water vapour that the temperature is 85 ~ 110 DEG C brings bag filter by carrier gas is dried（12）Interior dust removal by filtration, point
Dust and purified carrier gas are not obtained；The dust passes through rotary valve V（13）It is discharged into the conveyer（7）, through the charging
Chute enters the comminutor（1）Inside it is granulated again；
(5) the purified carrier gas is from scrubbing tower（14）Bottom enters the scrubbing tower（14）It is interior, it is washed with washings counter current contacting
It washs, cool down, dehumidify, and between washings are heated to 70 ~ 90 DEG C, the carrier gas temperature after dehumidifying is reduced to 30 ~ 60 DEG C from described
Scrubbing tower（14）Middle part is discharged, through circulating fan（15）Enter heater after pressurization（16）It is heated to 100 ~ 140 DEG C, after heating
Carrier gas is from the steam-tube rotatory dryer（3）Feed end enters dryer cycle use；
The scrubbing tower（14）The water washed mixed with the washings after through circulating pump（17）Pressurization, pressurization rear portion are allocated as
Enter the comminutor for granulation water（1）, partly enter heat exchanger（18）Temperature adjustment, the washings after temperature adjustment enter the washing
Tower（14）Top flash zone, washings recycle after flash cooled under 4.25 ~ 19.95kPaA pressure, the steam flashed off
And a small amount of fixed gas enters condenser（19）Condensation, the clean water recycling condensed out, a small amount of fixed gas pass through vacuum pump（20）
Emptying.
2. a kind of coal base nutrient for plants preparation method as described in claim 1, it is characterised in that：The step is (4) middle dry
Carrier gas refers to nitrogen or other inert gases.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163084.9A CN108484253A (en) | 2018-02-26 | 2018-02-26 | A kind of coal base nutrient for plants preparation method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810163084.9A CN108484253A (en) | 2018-02-26 | 2018-02-26 | A kind of coal base nutrient for plants preparation method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN108484253A true CN108484253A (en) | 2018-09-04 |
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ID=63340848
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810163084.9A Pending CN108484253A (en) | 2018-02-26 | 2018-02-26 | A kind of coal base nutrient for plants preparation method |
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| Country | Link |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822441A (en) * | 2012-11-16 | 2014-05-28 | 天华化工机械及自动化研究设计院有限公司 | Coal drying method through inert gas circulating |
| CN104355772A (en) * | 2014-11-13 | 2015-02-18 | 中国科学院亚热带农业生态研究所 | Preparation method and preparation device of compound fertilizer |
| CN204589023U (en) * | 2015-04-21 | 2015-08-26 | 李计双 | Humic acid complex fertilizer production system |
| CN204865737U (en) * | 2015-08-18 | 2015-12-16 | 四川正威实业有限公司 | System for be used for compound fertilizer's granulation |
| CN205974306U (en) * | 2016-07-29 | 2017-02-22 | 中化重庆涪陵化工有限公司 | Based compound fertilizer production system of whitewashing |
-
2018
- 2018-02-26 CN CN201810163084.9A patent/CN108484253A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103822441A (en) * | 2012-11-16 | 2014-05-28 | 天华化工机械及自动化研究设计院有限公司 | Coal drying method through inert gas circulating |
| CN104355772A (en) * | 2014-11-13 | 2015-02-18 | 中国科学院亚热带农业生态研究所 | Preparation method and preparation device of compound fertilizer |
| CN204589023U (en) * | 2015-04-21 | 2015-08-26 | 李计双 | Humic acid complex fertilizer production system |
| CN204865737U (en) * | 2015-08-18 | 2015-12-16 | 四川正威实业有限公司 | System for be used for compound fertilizer's granulation |
| CN205974306U (en) * | 2016-07-29 | 2017-02-22 | 中化重庆涪陵化工有限公司 | Based compound fertilizer production system of whitewashing |
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| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
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| RJ01 | Rejection of invention patent application after publication | ||
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Application publication date: 20180904 |