CN1036552A - Coal powder phosphorous fertilizer and production method - Google Patents
Coal powder phosphorous fertilizer and production method Download PDFInfo
- Publication number
- CN1036552A CN1036552A CN 89100352 CN89100352A CN1036552A CN 1036552 A CN1036552 A CN 1036552A CN 89100352 CN89100352 CN 89100352 CN 89100352 A CN89100352 A CN 89100352A CN 1036552 A CN1036552 A CN 1036552A
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- Prior art keywords
- coal
- powder
- phosphorous fertilizer
- boiler
- production method
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05B—PHOSPHATIC FERTILISERS
- C05B13/00—Fertilisers produced by pyrogenic processes from phosphatic materials
- C05B13/02—Fertilisers produced by pyrogenic processes from phosphatic materials from rock phosphates
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- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Fertilizers (AREA)
Abstract
The invention discloses a kind of coal powder phosphorous fertilizer and production method thereof.Coal powder phosphorous fertilizer is generated under the high temperature pyrolysis chilling condition in coal-powder boiler by mixture of coal and ground phosphate rock, and main nutrition is Ca
4P
2O
9Crystalline structure.It has the advantages that production cost is low, manufacturing process is simple, energy consumption is few, environmental pollution is little, and its product available phosphorus transformation efficiency can reach 98%, and its manufacture method is applicable to coal-fired power station boiler and common coal-powder boiler.
Description
The invention belongs to phosphate fertilizer and manufacturing technology thereof, be specifically related to a kind of coal powder phosphorous fertilizer that utilizes coal-powder boiler to produce.
Phosphate fertilizer is divided into water soluble phosphorous fertilizer and citrate acid soluble phosphatic fertilizer.Water soluble phosphorous fertilizer such as calcium superphosphate adopt sour method for making production usually, owing to consume a large amount of sulfuric acid in producing, production cost is higher and the fraud of contaminate environment arranged.Citrate acid soluble phosphatic fertilizer adopts hot method for making production usually, as fused(calcium magnesium)phosphate is to contain the more rhombspar of magnesium, peridotites, serpentine and Rock Phosphate (72Min BPL), coke etc., fusion at high temperature, shrend slagging then, drying, ball milling are made, and need consume a large amount of energy aborning.All there is the lower defective of available phosphorus transformation efficiency in existing water soluble phosphorous fertilizer and the citrate acid soluble phosphatic fertilizer actual production, is no more than 90% usually.
The objective of the invention is to overcome the deficiencies in the prior art, provide that a kind of production cost is low, energy consumption is little, low in the pollution of the environment, coal powder phosphorous fertilizer that the available phosphorus transformation efficiency is high and production method thereof.
The object of the present invention is achieved like this: coal-powder boiler is the high Industrial Boiler of a kind of thermo-efficiency, and is strong to the adaptability of coal, has the operation characteristic of high temperature chilling.Coal powder phosphorous fertilizer is a kind of citrate acid soluble phosphatic fertilizer, and it mixes the back with ground phosphate rock and drop into the coal-powder boiler internal combustion according to the operation mechanism of coal-powder boiler with coal dust, generate under the high temperature pyrolysis chilling condition of product in coal-powder boiler.Product is micropore shape powdery, and main nutrition is no fluorapatite crystal structure C a
4P
2O
9
The production method of coal powder phosphorous fertilizer is that raw coal and Rock Phosphate (72Min BPL) measure the back mixing respectively, be finely ground to powdery and spray into the coal-powder boiler internal combustion, coal dust and ground phosphate rock produce the high temperature pyrolysis reaction in the furnace chamber of coal-powder boiler, lime-ash after its burning is generated coal powder phosphorous fertilizer by the heat exchanger of coal-powder boiler by rapid chilling, and product is captured by the coal-powder boiler dust removal installation.
Under coal-powder boiler high temperature and water vapour existence condition, following chemical reaction takes place in ground phosphate rock:
The calcium phosphate crystal that generates becomes citric soluble phosphoric acid salt structure owing to chilling keeps getting off, and the raw material of coal powder phosphorous fertilizer is raw coal and Rock Phosphate (72Min BPL), and they use as the fuel of coal-powder boiler, and the lime-ash after the burning becomes coal powder phosphorous fertilizer.Therefore, according to the height of the difference and the Rock Phosphate (72Min BPL) grade of original coal ash part content, its proportioning raw materials must be satisfied with following condition:
1) in the safety and economic operation index of coal-powder boiler;
2) phosphorus pentoxide content of product meets national standard.
Raw material mixed weight of the present invention is than being coal dust: ground phosphate rock=100: 10～40.
The processing condition of producing coal powder phosphorous fertilizer are determined that by coal-powder boiler its temperature of combustion is 1400～1600 ℃, and in 2～5 seconds of combustion time, the lime-ash after the burning is chilled to 150～200 ℃ in 3～7 seconds.
Coal powder phosphorous fertilizer of the present invention and production method have the following advantages:
1, reduced production cost.Coal dust and ground phosphate rock act as a fuel and drop into the coal-powder boiler burning, and the lime-ash after the burning becomes coal powder phosphorous fertilizer, need not the specific equipment investment and increase new energy consumption, remarkable in economical benefits.
2, reduced environmental pollution.Lime-ash after coal dust and the ground phosphate rock burning all becomes available coal powder phosphorous fertilizer, has solved the cindery emission problem of coal-powder boiler, has obvious social.
3, improved the product fertilizer efficiency.Coal powder phosphorous fertilizer adopts the high temperature pyrolysis emergency cooling process to generate, and the transformation efficiency of available phosphorus is obviously improved.Laboratory assay is measured, and the available phosphorus transformation efficiency of coal powder phosphorous fertilizer is 98%.Crops such as field planting cucumber, tomato show, compare normal superphosphate, and crop yield improves more than 10%.
Be described further below in conjunction with embodiment:
The coal-powder boiler that the embodiment of the invention is used is the coal power station steam boiler, and steam output is 65 tons/hour.Original coal ash part content is 27%, the Rock Phosphate (72Min BPL) phosphorus pentoxide content is 30%, charge ratio is 100 parts in a raw coal, 22 parts of Rock Phosphate (72Min BPL), the effective phosphorus pentoxide content that generates product is greater than 12%, production technique is that raw coal and Rock Phosphate (72Min BPL) are respectively after the belted electronic balance metering, mixing the input ball mill is milled down to below 80 orders, spray into the burner hearth internal combustion of coal-powder boiler then in company with hot blast, fire box temperature is 1400～1500 ℃, coal dust and ground phosphate rock in 3～5 seconds by perfect combustion, the lime-ash that the burning back forms is cooled off rapidly by the boiler hot interchanger under the effect of flue gas, the time that arrives the cold zone of 150 ℃ of boiler dust removers from the high-temperature zone of burner hearth more than 1400 ℃ was 3～7 seconds, and this moment, coal powder phosphorous fertilizer generated, and product is captured by fly-ash separator.
Claims (6)
1, a kind of coal powder phosphorous fertilizer, it is characterized in that a certain proportion of coal dust and ground phosphate rock mix after, generate by high temperature pyrolysis chilling condition, product is micropore shape powdery, main nutrition is Ca
4P
2O
9Crystalline structure.
2, the described coal powder phosphorous fertilizer of a kind of claim 1, it is characterized in that spraying into the coal-powder boiler internal combustion after coal dust and ground phosphate rock mix, in the burner hearth of coal-powder boiler, produce the high temperature pyrolysis reaction, lime-ash after the burning is by the rapid chilling of heat exchanger quilt of coal-powder boiler, and product is captured by the coal-powder boiler dust removal installation.
3, the production method of coal powder phosphorous fertilizer according to claim 2 is characterized in that the coal dust and the mixed weight ratio of ground phosphate rock are 100: 10～40.
4, the production method of coal powder phosphorous fertilizer according to claim 2, the temperature of combustion that it is characterized in that coal dust and ground phosphate rock is 1400～1600 ℃, be 2～5 seconds combustion time.
5, the production method of coal powder phosphorous fertilizer according to claim 2 is characterized in that the lime-ash after the perfect combustion is chilled to 150～200 ℃ in 3～7 seconds.
6, the production method of coal powder phosphorous fertilizer according to claim 2 is characterized in that coal-powder boiler is the coal power station steam boiler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100352 CN1036552A (en) | 1989-01-20 | 1989-01-20 | Coal powder phosphorous fertilizer and production method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 89100352 CN1036552A (en) | 1989-01-20 | 1989-01-20 | Coal powder phosphorous fertilizer and production method |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1036552A true CN1036552A (en) | 1989-10-25 |
Family
ID=4853813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 89100352 Pending CN1036552A (en) | 1989-01-20 | 1989-01-20 | Coal powder phosphorous fertilizer and production method |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1036552A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001049636A1 (en) * | 2000-01-04 | 2001-07-12 | Shanmao Zhao | Germanium and selenium-enriched glass fertilizer and the method for producing the same |
| WO2001049635A1 (en) * | 2000-01-03 | 2001-07-12 | Shanmao Zhao | Glass fertilizer and the method for producing the same |
-
1989
- 1989-01-20 CN CN 89100352 patent/CN1036552A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2001049635A1 (en) * | 2000-01-03 | 2001-07-12 | Shanmao Zhao | Glass fertilizer and the method for producing the same |
| WO2001049636A1 (en) * | 2000-01-04 | 2001-07-12 | Shanmao Zhao | Germanium and selenium-enriched glass fertilizer and the method for producing the same |
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| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
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| C01 | Deemed withdrawal of patent application (patent law 1993) | ||
| WD01 | Invention patent application deemed withdrawn after publication |