CN102515978A - Slow-release urea and production method thereof - Google Patents
Slow-release urea and production method thereof Download PDFInfo
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- CN102515978A CN102515978A CN2011103740447A CN201110374044A CN102515978A CN 102515978 A CN102515978 A CN 102515978A CN 2011103740447 A CN2011103740447 A CN 2011103740447A CN 201110374044 A CN201110374044 A CN 201110374044A CN 102515978 A CN102515978 A CN 102515978A
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Abstract
The invention belongs to a slow-release urea, and in particular relates to a slow-release urea in which attapulgite powder, polyacrylamide and quartz limestone powder are taken as main slow-release preparations and a production method thereof. The slow-release urea consists of the following raw materials in parts by weight: 30-120 parts of attapulgite powder, 1-10 parts of polyacrylamide, 1-10 parts of quartz limestone powder and 860-968 parts of melt urea solution. The slow-release urea has the advantages of less investment, simple process, low operation cost and good slow release effect.
Description
Technical field
The invention belongs to slow-release carbamide, be specifically related to a kind ofly with attapulgite, SEPIGEL 305 and quartz powder are the slow-release carbamide and the working method thereof of main sustained release dosage.
Background technology
State is maximum in the world fertiliser prodn and use country at present, and wherein amount of application of nitrogen fertilizer every year is about 5,000 ten thousand tons.Research shows that present stage China's fertilizer farmland nutrient utilization ratio is totally lower; Particularly utilization rate of nitrogen fertilizer is merely about 30%; Level far below world developed country about 50% not only causes the huge wasting of resources, and long-term application all has bigger influence to soil, environment.
Summary of the invention
The objective of the invention is to overcome defective of the prior art and provide a kind of less investment, technology simple, low slow-release carbamide and the working method thereof with had good sustained release effect of running cost.
The objective of the invention is to realize like this:
The present invention is made up of following raw materials by weight portion: 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305,860～968 parts of 1～10 part of quartz powder and fusing urea solution fusing urea solution.
Working method step of the present invention is following:
One, with 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305, quartz powder is put into the sustained release dosage charging device for 1～10 part and is mixed the back through measuring belt, and sustained release dosage groove and powder pump get in the urea soln groove;
The concentration of two, vapo(u)rization system in the urea production being come is that 860～968 parts of fusing urea solution 99.5% or more are through in the pipeline entering urea soln groove that under meter is installed;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on uniform mixing in the urea soln groove, and to make the pressure of urea soln groove be 0.5～0.6MPa, temperature is 135 ℃～145 ℃;
Four, mixed mixture in the step 3 is squeezed into through the urea melting pump through pipeline carried out granulation in the prilling tower and get final product.Urea soln groove inside in the described step 3 is equipped with whisking appliance.
The present invention can slow down the release rate of nitrogen element in the fertilizer; Thoroughly solve present common urea nitrogen element absorption and utilize low problem; Greatly improve farm crop to nutrient absorbing, eliminate common urea and waste too much the drawback that the later stage is under-supply in plant growth in earlier stage.Experiment shows that fertilizer efficiency of the present invention can prolong more than two months, and nitrogen element utilization ratio can improve 6%-13%, and under the situation of average amount of fertilizer applied minimizing 20%, stimulation ratio reaches 1.76%～45.4%, slowly-releasing and obvious effect of increasing production.
The present invention has less investment, technology is simple, and running cost is hanged down the advantage with had good sustained release effect.
Description of drawings
Fig. 1 is a structural representation of the present invention.
Embodiment
As shown in Figure 1, the present invention is made up of following raw materials by weight portion: 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305,860～968 parts of 1～10 part of quartz powder and fusing urea solution fusing urea solution.
Working method step of the present invention is following:
One, with 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305, quartz powder is put into sustained release dosage charging device 1 for 1～10 part and is mixed the back through measuring belt 2, and sustained release dosage groove 4 gets in the urea soln groove 6 with powder pump 5;
Two, be that 860～968 parts of fusing urea solution more than 99.5% get in the urea soln groove 6 through the pipeline that under meter 9 is installed with the concentration of vapo(u)rization system in the urea production 8;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on uniform mixing in the urea soln groove 6, and to make the pressure of urea soln groove 6 be 0.5～0.6MPa, temperature is 135 ℃～145 ℃;
Four, mixed mixture in the step 3 is squeezed into through urea melting pump 13 through pipeline carried out granulation in the prilling tower 14 and get final product.
Urea soln groove 6 inside in the described step 3 are equipped with whisking appliance 7.
As shown in Figure 1; The present invention includes sustained release dosage charging device 1, vapo(u)rization system 8, phlegma hot water tank 10 and steam groove 11; Said sustained release dosage charging device 1 links to each other with sustained release dosage groove 4 through measuring belt 2; Described sustained release dosage groove 4 through pipeline successively with powder pump 5, urea soln groove 6, urea melting pump 13 links to each other with prilling tower 14; Described powder pump 5 links to each other with the sustained release dosage import 15 at urea soln groove top through pipeline; The outlet 18 that described urea soln groove 6 bottoms are provided with links to each other with urea melting pump 13 through pipeline; Described vapo(u)rization system 8 links to each other with the fusing urea solution inlet port 16 at urea soln groove top through pipeline; The venting port 27 that described urea soln groove 6 tops are provided with through pipeline successively with SV 28, vent valve 29 links to each other with atmosphere; Described phlegma hot water tank 10 links to each other with the hot water inlet 17 at urea soln groove top through pipeline; Described steam groove 11 links to each other with the insulation jacket 19 of urea soln groove outer setting through pipeline; The condensation-water drain 20 that described insulation jacket 19 bottoms are provided with links to each other with condensate recovery system 12 through pipeline; The set inside of described urea soln groove 6 has whisking appliance 7; Described measuring belt 2 is provided with weighing balance 3; Pipeline between described vapo(u)rization system 8 and the fusing urea solution inlet port 16 is provided with under meter 9; One end of described whisking appliance 7 links to each other with the motor 26 that is arranged on urea soln groove 6 tops, and described motor 26 links to each other with power supply.Pipeline between described sustained release dosage groove 4 and the powder pump 5 is provided with first valve 21.Pipeline between described powder pump 5 and the urea soln groove 6 is provided with second valve 22.Pipeline between described phlegma hot water tank 10 and the hot water inlet 17 is provided with the 3rd valve 23.Pipeline between described outlet 18 and the urea melting pump 13 is provided with the 4th valve 24.Pipeline between described condensation-water drain 20 and the condensate recovery system 12 is provided with the 5th valve 25.
Sustained release dosage in the sustained release dosage charging device 1 gets into measuring belt 2, gets into sustained release dosage grooves 4 through weighing balance 3 metering backs, squeezes in the urea soln groove 6 from urea soln groove 6 tops through powder pump 5 then; Fusing urea solution in the vapo(u)rization system 8 also gets in the urea soln groove 6 from urea soln groove 6 tops after measuring through under meter 9, keeps pressure 0.5～0.6MPa in the urea soln groove 6,135 ℃～145 ℃ of temperature; There is whisking appliance 7 to turn round in the urea soln groove 6 always, guarantees the full and uniform mixing of urea soln and sustained release dosage; Mixture behind the uniform mixing flows out from outlet at bottom 18, squeezes into through urea melting pump 13 and carries out granulation in the prilling tower 16; There is insulation jacket 19 urea soln groove 6 outsides, feed 160 ℃ of steam in the insulation jacket 19 to guarantee temperature-stable in the urea soln groove 6, get into condensate recovery system 12 through insulation jacket 19 bottom condensate waters outlet 20 behind the vapor condensation and utilize; Urea soln groove 6 tops are provided with hot water inlet 17, when producing end, in urea soln groove 6, feed hot water through hot water inlet, so that urea soln groove 6 inside are cleaned; Urea soln groove 6 tops are provided with venting port 27, and SV 28 is opened automatically when urea soln groove 6 internal pressure superpressures, and gas is discharged in the atmosphere through SV 28 and vent valve 29.
Sustained release dosage described in the present invention comprises attapulgite, SEPIGEL 305, quartz powder.Whisking appliance 7 described in the present invention is arranged on the inside of urea soln groove 6, and an end of described whisking appliance 7 links to each other with the motors that are arranged on urea soln groove 6 outsides, and described motor links to each other with power supply.
Embodiment one:
Make 1000 kilograms when of the present invention, 30 kilograms of attapulgites, 1 kilogram of SEPIGEL 305,1 kilogram of quartz powder and 968 kilograms of fusing urea solution fusing urea solution.
One, with 30 kilograms of attapulgites, 1 kilogram of SEPIGEL 305, quartz powder is put into sustained release dosage charging device 1 for 1 kilogram and is mixed the back through measuring belt 2, and sustained release dosage groove 4 gets in the urea soln groove 6 with powder pump 5;
Two, be that 968 kilograms of fusing urea solution more than 99.5% get in the urea soln groove 6 through the pipeline that under meter 9 is installed with the concentration of vapo(u)rization system in the urea production 8;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on uniform mixing in the urea soln groove 6, and to make the pressure of urea soln groove 6 be 0.5MPa, temperature is 135 ℃;
Four, mixed mixture in the step 3 is squeezed into through urea melting pump 13 through pipeline carried out granulation in the prilling tower 14 and get final product.
Urea soln groove 6 inside in the described step 3 are equipped with whisking appliance 7.
Embodiment two:
Make 2000 kilograms when of the present invention, 120 kilograms of attapulgites, 10 kilograms of SEPIGEL 305s, 10 kilograms of quartz powders and 10 kilograms of fusing urea solution fusing urea solution.
One, with 120 kilograms of attapulgites, 10 kilograms of SEPIGEL 305s, quartz powder is put into sustained release dosage charging device 1 for 10 kilograms and is mixed the back through measuring belt 2, and sustained release dosage groove 4 gets in the urea soln groove 6 with powder pump 5;
Two, be that 1860 kilograms of fusing urea solution more than 99.5% get in the urea soln groove 6 through the pipeline that under meter 9 is installed with the concentration of vapo(u)rization system in the urea production 8;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on uniform mixing in the urea soln groove 6, and to make the pressure of urea soln groove 6 be 0.55MPa, temperature is 140 ℃;
Four, mixed mixture in the step 3 is squeezed into through urea melting pump 13 through pipeline carried out granulation in the prilling tower 14 and get final product.
Urea soln groove 6 inside in the described step 3 are equipped with whisking appliance 7.
Embodiment three:
Make 3000 kilograms when of the present invention, 360 kilograms of attapulgites, 30 kilograms of SEPIGEL 305s, 30 kilograms of quartz powders and 2580 kilograms of fusing urea solution fusing urea solution.
One, with 360 kilograms of attapulgites, 30 kilograms of SEPIGEL 305s, quartz powder is put into sustained release dosage charging device 1 for 30 kilograms and is mixed the back through measuring belt 2, and sustained release dosage groove 4 gets in the urea soln groove 6 with powder pump 5;
Two, be that 2580 kilograms of fusing urea solution more than 99.5% get in the urea soln groove 6 through the pipeline that under meter 9 is installed with the concentration of vapo(u)rization system in the urea production 8;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on uniform mixing in the urea soln groove 6, and to make the pressure of urea soln groove 6 be 0.6MPa, temperature is 145 ℃;
Four, mixed mixture in the step 3 is squeezed into through urea melting pump 13 through pipeline carried out granulation in the prilling tower 14 and get final product.
Urea soln groove 6 inside in the described step 3 are equipped with whisking appliance 7.
Claims (3)
1. a slow-release carbamide is characterized in that: be made up of following raw materials by weight portion: 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305,860～968 parts of 1～10 part of quartz powder and fusing urea solution fusing urea solution.
2. the working method of a slow-release carbamide, it is characterized in that: its step is following:
One, with 30～120 parts of attapulgites, 1～10 part of SEPIGEL 305, quartz powder is put into sustained release dosage charging device (1) for 1～10 part and is mixed the back through measuring belt (2), and sustained release dosage groove (4) and powder pump (5) get in the urea soln groove (6);
The concentration of two, vapo(u)rization system in the urea production (8) being come is that 860～968 parts of fusing urea solution 99.5% or more are through in the pipeline entering urea soln groove (6) that under meter (9) is installed;
Three, the fusing urea solution in mixed sustained release dosage and the step 2 in the step 1 is placed on the interior uniform mixing of urea soln groove (6), and to make the pressure of urea soln groove (6) be 0.5～0.6MPa, temperature is 135 ℃～145 ℃;
Four, mixed mixture in the step 3 is squeezed into through urea melting pump (13) through pipeline carried out granulation in the prilling tower (14) and get final product.
3. according to the working method of claims 2 described slow-release carbamides, it is characterized in that: urea soln groove (6) inside in the described step 3 is equipped with whisking appliance (7).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201110374044.7A CN102515978B (en) | 2011-11-23 | 2011-11-23 | Slow-release urea and production method thereof |
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| CN201110374044.7A CN102515978B (en) | 2011-11-23 | 2011-11-23 | Slow-release urea and production method thereof |
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| CN102515978A true CN102515978A (en) | 2012-06-27 |
| CN102515978B CN102515978B (en) | 2014-04-02 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266152A (en) * | 2017-08-24 | 2017-10-20 | 中化吉林长山化工有限公司 | Suitable for the production method and system of urea plant and the high tower compound fertilizer of granulation tower |
Citations (6)
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| CN1357513A (en) * | 2001-12-13 | 2002-07-10 | 黑龙江黑化集团有限公司 | Multicompentnt granular urea and its production process |
| CN1752056A (en) * | 2004-12-31 | 2006-03-29 | 深圳市芭田生态工程股份有限公司 | Method of producing granular composite fertilizer using tower pelletizing |
| CN101041606A (en) * | 2007-03-11 | 2007-09-26 | 中国科学院等离子体物理研究所 | Loss control method for low cost environment-friendly type nitrogenous fertilizer and loss control fertilizer |
| US20080050436A1 (en) * | 2006-08-25 | 2008-02-28 | Chu Jack F | Methods and compounds for obliteration of vessels |
| CN101209940A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院等离子体物理研究所 | Loss control nitrogenous fertilizer and producing method thereof |
| CN201908052U (en) * | 2010-12-17 | 2011-07-27 | 安徽三星化工有限责任公司 | Preparation device for sustained slow-release fertilizer |
-
2011
- 2011-11-23 CN CN201110374044.7A patent/CN102515978B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1357513A (en) * | 2001-12-13 | 2002-07-10 | 黑龙江黑化集团有限公司 | Multicompentnt granular urea and its production process |
| CN1752056A (en) * | 2004-12-31 | 2006-03-29 | 深圳市芭田生态工程股份有限公司 | Method of producing granular composite fertilizer using tower pelletizing |
| US20080050436A1 (en) * | 2006-08-25 | 2008-02-28 | Chu Jack F | Methods and compounds for obliteration of vessels |
| CN101041606A (en) * | 2007-03-11 | 2007-09-26 | 中国科学院等离子体物理研究所 | Loss control method for low cost environment-friendly type nitrogenous fertilizer and loss control fertilizer |
| CN101209940A (en) * | 2007-12-24 | 2008-07-02 | 中国科学院等离子体物理研究所 | Loss control nitrogenous fertilizer and producing method thereof |
| CN201908052U (en) * | 2010-12-17 | 2011-07-27 | 安徽三星化工有限责任公司 | Preparation device for sustained slow-release fertilizer |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107266152A (en) * | 2017-08-24 | 2017-10-20 | 中化吉林长山化工有限公司 | Suitable for the production method and system of urea plant and the high tower compound fertilizer of granulation tower |
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| CN102515978B (en) | 2014-04-02 |
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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 |
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Effective date of registration: 20200401 Address after: 453731 Xinxiang Economic Development Zone, Henan Province (Xiaoji Town) Co-patentee after: Jiujiang Xinlianxin Chemical Fertilizer Co.,Ltd. Patentee after: Henan Xinlianxin Chemical Industry Group Co.,Ltd. Co-patentee after: XINJIANG XINLIANXIN ENERGY CHEMICAL Co.,Ltd. Address before: 453731 Xinxiang Economic Development Zone, Henan Province (Xiaoji Town) Patentee before: Henan Xinlianxin Chemical Industry Group Co.,Ltd. |
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Address after: 453731 Henan Xinxiang Economic Development Zone (Xiaoji Town) Patentee after: Henan Xinlianxin Chemical Industry Group Co.,Ltd. Patentee after: Jiangxi xinlianxin Chemical Industry Co.,Ltd. Patentee after: XINJIANG XINLIANXIN ENERGY CHEMICAL Co.,Ltd. Address before: 453731 Xinxiang City, Henan Province Economic Development Zone (Xiaoji town) Patentee before: Henan Xinlianxin Chemical Industry Group Co.,Ltd. Patentee before: Jiujiang Xinlianxin Chemical Fertilizer Co.,Ltd. Patentee before: XINJIANG XINLIANXIN ENERGY CHEMICAL Co.,Ltd. |