CN204174117U - A kind of industrial producing urea ammonium nitrate solution reduces the device that biuret generates - Google Patents
A kind of industrial producing urea ammonium nitrate solution reduces the device that biuret generates Download PDFInfo
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- CN204174117U CN204174117U CN201420560795.7U CN201420560795U CN204174117U CN 204174117 U CN204174117 U CN 204174117U CN 201420560795 U CN201420560795 U CN 201420560795U CN 204174117 U CN204174117 U CN 204174117U
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Abstract
A kind of industrial producing urea ammonium nitrate solution that provides the utility model reduces the device that biuret generates, comprise urea soln groove, urea solution pump, urea ammonium nitrate Preparation tank, urea ammonium nitrate solution pump, water cooler and transfer line, described urea soln trench bottom is connected with the entrance of urea solution pump by pipeline, described urea solution pump is connected by the entrance of transfer line with urea ammonium nitrate Preparation tank, trace pipe road is provided with outside described transfer line, be connected by the entrance of pipeline with urea ammonium nitrate solution pump bottom described urea ammonium nitrate Preparation tank, described urea ammonium nitrate solution pump is connected with the entrance of water cooler by pipeline, pipeline between described urea ammonium nitrate solution pump and water cooler is sent pipeline outside with urea ammonium nitrate solution product and is connected, described water cooler is connected by the top entry of pipeline with urea ammonium nitrate Preparation tank.The utility model device, optimizes production control, decreases the generation of biuret, effectively improves quality product.
Description
Technical field
The utility model belongs to chemical fertilizer field, particularly relates to the device that a kind of industrial producing urea ammonium nitrate solution (UAN) reduces biuret generation.
Background technology
Urea saltpetre ammonium solution (Urea Ammonium Nitrate solution), being called for short UAN solution, abroad also referred to as nitrogen solution (N solution), is formulated by urea, ammonium nitrate and water.UAN solution is a kind of liquid nitrogenous fertilizer of stable, colourless, normal pressure.Because temperature is too high or the residence time is longer in industrial production, a certain amount of biuret can be generated.
Biuret (english abbreviation Bi) is the by product in urea production, and biuret molecular formula is C
2h
5n
3o
2.In UAN production process, if temperature controls too high, urea generation condensation reaction and generate Bi, during Bi too high levels, to the toxic effect of farm crop, to the germination of seed and growth all harmful,, foliar spray urea-base compound fertilizer extremely low at soil organic matter content is too much, Bi poisons the most serious, and Bi has perviousness, seed cell can be caused to dewater, suppress seed germination.Should 0.5% be no more than as Bi content in the urea of foliage top dressing.
Bi generates and generally produces under solution state, and there are immediate cause temperature and the residence time of its growing amount and urea soln.In UAN production process, when temperature is more than 120 DEG C, urea condensation reaction is accelerated, and biuret generates obviously, and when temperature is lower, turnout is little.Temperature is high, and the residence time is long, and Bi growing amount increases.If temperature is too low, can there is crystallization in urea soln, blocking pipeline, and production cannot be carried out.When UAN produces preparation, because urea soln temperature is at about 100-120 DEG C, if the insulation vapour pressure temperature and pressure of production is high, Bi growing amount increases obviously, generally can reach 0.5-1.5%, cause quality product defective.
Industrial production UAN, generally synchronously can carry out at ammonium nitrate and urea plant, urea line of pipes is longer, and urea residence time in line of pipes and UAN Preparation tank is longer, and the combined influence of high temperature and the residence time can cause Bi in UAN product to increase obviously.
Utility model content
For above-mentioned technical problem, the purpose of this utility model is to provide the device that a kind of industrial producing urea ammonium nitrate solution reduces biuret generation, and optimization production controls, and reduces the generation of biuret, effectively improves quality product.
The technical solution adopted in the utility model is:
A kind of industrial producing urea ammonium nitrate solution reduces the device that biuret generates, comprise urea soln groove, urea solution pump, urea ammonium nitrate Preparation tank, urea ammonium nitrate solution pump, water cooler and transfer line, described urea soln trench bottom is connected with the entrance of urea solution pump by pipeline, described urea solution pump is connected with urea ammonium nitrate Preparation tank entrance by transfer line, trace pipe road is provided with outside described transfer line, one end, described trace pipe road is connected with the condensate drainage pipe one being in series with valve one, the other end is connected with the condensate drainage pipe two being in series with valve two, described trace pipe road is the outer trace pipe road of steam or steam jacket trace pipe road, the tracing steam input tube that described trace pipe Lu Shangyu is in series with valve three is connected, be connected by the entrance of pipeline with urea ammonium nitrate solution pump bottom described urea ammonium nitrate Preparation tank, described urea ammonium nitrate solution pump is connected by the entrance of pipeline with described water cooler, pipeline between described urea ammonium nitrate solution pump and described water cooler is sent pipeline outside with urea ammonium nitrate solution product and is connected, described water cooler is connected by the top entry of pipeline with described urea ammonium nitrate Preparation tank.
Industrial producing urea ammonium nitrate solution described in the utility model reduces the device that biuret generates, wherein, described urea soln trench bottom is provided with steam heating coil, and described steam heating coil one end is connected with heating steam intake line, the water of condensation of the other end discharged steam condensation.
Industrial producing urea ammonium nitrate solution described in the utility model reduces the device that biuret generates, wherein, be provided with cooling water coil bottom described urea ammonium nitrate Preparation tank, described cooling water coil one end is connected with coolant intake pipe road, and the other end is connected with coolant outlet hose road.
Industrial producing urea ammonium nitrate solution described in the utility model reduces the device that biuret generates, wherein, the part of described transfer line between one end to described urea solution pump, described trace pipe road is provided with valve four, the part of described transfer line between the described trace pipe road the other end to described urea ammonium nitrate Preparation tank is provided with valve five, the part of described transfer line between one end, described trace pipe road to described valve four is connected by the entrance of pipeline with described urea soln groove top, the part of described transfer line between the described trace pipe road the other end to described valve five is connected with the input tube that purges steam being in series with valve six.
Industrial producing urea ammonium nitrate solution described in the utility model reduces the device that biuret generates, wherein, the sidewall of described urea soln groove and described urea ammonium nitrate Preparation tank is separately installed with thermometer one and thermometer two, described transfer line is provided with thermometer three, the pipeline between described water cooler and described urea ammonium nitrate Preparation tank is provided with thermometer four.
The utility model beneficial effect:
The utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates, and by being provided with trace pipe road outside line of pipes, urea not easily condensation reaction occurs, and reduces the generation of biuret, and prevents urea soln crystallization, blocking transfer line.Be provided with water cooler in the outlet of UAN solution pump, lowered the temperature by heat exchange, generate Bi under avoiding high temperature and overstand situation, thus optimize production control, reduce the generation of biuret, effectively improve quality product.
The utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates, and by urea soln trench bottom design steam heating coil, prevents temperature too low urea soln generation crystallization, decreases the generation of biuret.
The utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates, and by designing the cooling water coil of cooling in ammonium nitrate solution groove, cooling water coil and water cooler, twice heat exchange is lowered the temperature, and effectively reduces the generation of Bi;
The utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates, and by increasing blowback steam at urea soln transfer line, urea blowback in pipeline reclaimed when stopping producing, prevent urea continuous heating, the residence time is long, and generating Bi increases; On the other hand, the urea soln blowback in line of pipes can be got back to urea soln groove, prevent line temperature from declining, cause urea crystals blocking pipeline.
The utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates, thermometer one and thermometer two is separately installed with by the sidewall of described urea soln groove and described urea ammonium nitrate Preparation tank, described transfer line is provided with thermometer three, pipeline between described water cooler and described urea ammonium nitrate Preparation tank is provided with thermometer four, the amount of heating steam and tracing steam can be adjusted in time, adjust urea soln temperature in urea soln groove and transfer line in time.
Accompanying drawing explanation
Fig. 1 is the structural representation that the utility model industrial producing urea ammonium nitrate solution reduces the device that biuret generates.
In figure: 1, urea soln groove; 2, urea solution pump; 3, UAN Preparation tank; 4, UAN solution pump; 5, water cooler; 6, transfer line; 7, trace pipe road; 8, valve one; 9, valve three; 10, steam heating coil; 11, cooling water coil; 12, valve four; 13, valve five; 14, valve six; 15, thermometer one; 16, thermometer two; 17, thermometer three; 18, thermometer four; 19, valve two.
Below with reference to drawings and Examples, the utility model is described in detail.
Embodiment
As shown in Figure 1, a kind of industrial producing urea ammonium nitrate solution reduces the device that biuret generates, comprise urea soln groove 1, urea solution pump 2, UAN Preparation tank 3, UAN solution pump 4, water cooler 5 and transfer line 6, be connected by the entrance of pipeline with urea solution pump 2 bottom urea soln groove 1, urea solution pump 2 is connected with UAN Preparation tank 3 entrance by transfer line 6, trace pipe road 7 is provided with outside transfer line 6, one end, trace pipe road 7 is connected with the condensate drainage pipe one being in series with valve 1, the other end is connected with the condensate drainage pipe two being in series with valve 2 19, trace pipe road 7 is the outer trace pipe road of steam, trace pipe road 7 is connected with the tracing steam intake line being in series with valve 39, be connected by the entrance of pipeline with UAN solution pump 4 bottom UAN Preparation tank 3, UAN solution pump 4 is connected by the entrance of pipeline with water cooler 5, pipeline between UAN solution pump 4 and water cooler 5 is sent pipeline outside with UAN solution product and is connected, water cooler 5 is connected with UAN Preparation tank 3 top entry by pipeline, steam heating coil 10 is provided with bottom urea soln groove 1, steam heating coil 10 one end is connected with heating steam intake line, the water of condensation of the other end discharged steam condensation, cooling water coil 11 is provided with bottom UAN Preparation tank 3, cooling water coil 11 one end is connected with coolant intake pipe road, the other end is connected with coolant outlet hose road, the part of transfer line 6 between one end, trace pipe road 7 to urea solution pump 2 is provided with valve 4 12, the part of transfer line 6 between one end, trace pipe road 7 to valve 4 12 is connected by the entrance of pipeline with urea soln groove 1 top, the part of transfer line 6 between trace pipe road 7 the other end to UAN Preparation tank 3 is provided with valve 5 13, the part of transfer line 6 between trace pipe road 7 the other end to valve 5 13 is connected with the intake line that purges steam being in series with valve 6 14, the sidewall of urea soln groove 1 and UAN Preparation tank 3 is separately installed with thermometer 1 and thermometer 2 16, transfer line 6 is provided with thermometer 3 17, pipeline between water cooler 5 and UAN Preparation tank 3 is provided with thermometer 4 18.
The present embodiment industrial producing urea ammonium nitrate solution reduces the using method of the device that biuret generates, and comprises the following steps:
A () opens the heating steam be connected with steam heating coil 10, the pressure of heating steam is 0.2Mpa, temperature is 120 DEG C, open the tracing steam be connected with transfer line 6, the pressure of tracing steam is 0.2MPa, temperature is 120 DEG C, and control temperature is at 90-100 DEG C in urea soln groove 1 for urea soln, and the urea soln temperature in transfer line 6 is at 80-90 DEG C;
B () opens the water coolant of cooling water coil 11, open water cooler 5 water coolant, and it is qualified that cooling system runs;
C the urea soln of 75% concentration after qualified for preparation is put into the groove of urea soln described in step (a) 1, thermometer 1 displays temperature 90 DEG C by (); Open urea solution pump 2, total amount 50 tons of urea solns are delivered to the UAN Preparation tank 3 that volume is 100m3,150 DEG C of liquid ammonium nitrate solution 50 tons is joined UAN Preparation tank 3, now simultaneously, on transfer line 6, thermometer 3 17 shows 88 DEG C, and on UAN Preparation tank 3, thermometer 4 18 shows 115 DEG C;
D () opens UAN solution pump 4, after the cooling of water cooler 5 described in step (b), UAN solution temperature is 75 DEG C, circulation temperature lowering; In UAN Preparation tank 3, temperature is cooled to 50 DEG C gradually at 115 DEG C, 100 tons of ammonium nitrate solution temperature fall times about 40 minutes;
E in () described UAN Preparation tank 3, ammonium nitrate solution has been prepared after, tank area is delivered to by outside qualified UAN solution product, UAN solution preparation adopts interval preparation, by when delivering to tank area outside UAN solution product, the liquid level of each reservation about 20% in UAN Preparation tank 3, this liquid level temperature is 40-50 DEG C.
Sampling analysis UAN solution product, test-results shows that Bi content is 0.32%, and in product, Bi index is less than less than 0.4%, meets industrial needs, decreases the generation of biuret.
Embodiment 2
Distinguish with embodiment 1 and be: tracing steam described in step (a) adopts vapor pressure to be 0.3MPa, and temperature is 130 DEG C; The vapor pressure that described steam heating coil adopts is 0.3Mpa, and temperature is 130 DEG C; Urea concentration described in step (c) is 68%, and described liquid ammonium nitrate solution temperature is at 160 DEG C.
Sampling analysis UAN solution product, in product, Bi index is less than less than 0.4%.
Embodiment 3
Distinguish with embodiment 1 and be: trace pipe road 7 is steam jacket trace pipe road, and urea concentration described in step (c) is 68%.
Sampling analysis UAN solution product, in product, Bi index is less than less than 0.4%.
Above-described embodiment is only be described preferred implementation of the present utility model; not scope of the present utility model is limited; under the prerequisite not departing from the utility model design spirit; the various distortion that those of ordinary skill in the art make the technical solution of the utility model and improvement, all should fall in protection domain that the utility model claims determine.
Claims (5)
1. the device of industrial producing urea ammonium nitrate solution minimizing biuret generation, it is characterized in that: comprise urea soln groove (1), urea solution pump (2), urea ammonium nitrate Preparation tank (3), urea ammonium nitrate solution pump (4), water cooler (5) and transfer line (6), described urea soln groove (1) bottom is connected by the entrance of pipeline with urea solution pump (2), described urea solution pump (2) is connected with urea ammonium nitrate Preparation tank (3) entrance by transfer line (6), trace pipe road (7) is provided with outside described transfer line (6), described trace pipe road (7) one end is connected with the condensate drainage pipe one being in series with valve one (8), the other end is connected with the condensate drainage pipe two being in series with valve two (19), described trace pipe road (7) is the outer trace pipe road of steam or steam jacket trace pipe road, described trace pipe road (7) is upper to be connected with the tracing steam input tube being in series with valve three (9), described urea ammonium nitrate Preparation tank (3) bottom is connected by the entrance of pipeline with urea ammonium nitrate solution pump (4), described urea ammonium nitrate solution pump (4) is connected by the entrance of pipeline with described water cooler (5), pipeline between described urea ammonium nitrate solution pump (4) and described water cooler (5) is sent pipeline outside with urea ammonium nitrate solution product and is connected, described water cooler (5) is connected by the top entry of pipeline with described urea ammonium nitrate Preparation tank (3).
2. industrial producing urea ammonium nitrate solution according to claim 1 reduces the device that biuret generates, it is characterized in that: described urea soln groove (1) bottom is provided with steam heating coil (10), described steam heating coil (10) one end is connected with heating steam intake line, the water of condensation of the other end discharged steam condensation.
3. industrial producing urea ammonium nitrate solution according to claim 2 reduces the device that biuret generates, it is characterized in that: described urea ammonium nitrate Preparation tank (3) bottom is provided with cooling water coil (11), described cooling water coil (11) one end is connected with coolant intake pipe road, and the other end is connected with coolant outlet hose road.
4. industrial producing urea ammonium nitrate solution according to claim 3 reduces the device that biuret generates, it is characterized in that: the part that described transfer line (6) is positioned between described trace pipe road (7) one end to described urea solution pump (2) is provided with valve four (12), the part that described transfer line (6) is positioned between described trace pipe road (7) the other end to described urea ammonium nitrate Preparation tank (3) is provided with valve five (13), the part that described transfer line (6) is positioned between described trace pipe road (7) one end to described valve four (12) is connected by the entrance of pipeline with the top of described urea soln groove (1), the part that described transfer line (6) is positioned between described trace pipe road (7) the other end to described valve five (13) is connected with the input tube that purges steam being in series with valve six (14).
5. industrial producing urea ammonium nitrate solution according to claim 4 reduces the device that biuret generates, it is characterized in that: the sidewall of described urea soln groove (1) and described urea ammonium nitrate Preparation tank (3) is separately installed with thermometer one (15) and thermometer two (16), described transfer line (6) is provided with thermometer three (17), the pipeline between described water cooler (5) and described urea ammonium nitrate Preparation tank (3) is provided with thermometer four (18).
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| CN201420560795.7U CN204174117U (en) | 2014-09-26 | 2014-09-26 | A kind of industrial producing urea ammonium nitrate solution reduces the device that biuret generates |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311163A (en) * | 2014-09-26 | 2015-01-28 | 安徽淮化股份有限公司 | Device for reducing generation of biuret in urea ammonium nitrate solution industrial production process and application method thereof |
| CN104973891A (en) * | 2015-06-09 | 2015-10-14 | 安徽淮化股份有限公司 | Two urea device-combined device for producing UAN liquid nitrogen fertilizer and use method thereof |
| CN105565909A (en) * | 2015-12-31 | 2016-05-11 | 史丹利化肥股份有限公司 | Urea-ammonium nitrate water-soluble fertilizer and preparation method thereof |
| CN105777213A (en) * | 2016-02-04 | 2016-07-20 | 河南心连心化肥有限公司 | Urea-ammonium nitrate solution production device and control method thereof |
| CN111720741A (en) * | 2020-06-30 | 2020-09-29 | 中国神华能源股份有限公司国华电力分公司 | Urea solution conveying equipment |
-
2014
- 2014-09-26 CN CN201420560795.7U patent/CN204174117U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104311163A (en) * | 2014-09-26 | 2015-01-28 | 安徽淮化股份有限公司 | Device for reducing generation of biuret in urea ammonium nitrate solution industrial production process and application method thereof |
| CN104973891A (en) * | 2015-06-09 | 2015-10-14 | 安徽淮化股份有限公司 | Two urea device-combined device for producing UAN liquid nitrogen fertilizer and use method thereof |
| CN104973891B (en) * | 2015-06-09 | 2018-06-15 | 安徽淮化股份有限公司 | The device and its application method of two sets of urea plant Joint Production UAN liquid nitrogen fertilizer |
| CN105565909A (en) * | 2015-12-31 | 2016-05-11 | 史丹利化肥股份有限公司 | Urea-ammonium nitrate water-soluble fertilizer and preparation method thereof |
| CN105777213A (en) * | 2016-02-04 | 2016-07-20 | 河南心连心化肥有限公司 | Urea-ammonium nitrate solution production device and control method thereof |
| CN111720741A (en) * | 2020-06-30 | 2020-09-29 | 中国神华能源股份有限公司国华电力分公司 | Urea solution conveying equipment |
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| CB03 | Change of inventor or designer information |
Inventor after: Xie Shaoying Inventor after: Gao Yuan Inventor after: Gao Feng Inventor after: Zhao Peijun Inventor after: Zhang Jun Inventor before: Gao Feng Inventor before: Zhang Jingzhong Inventor before: Ma Yanchun Inventor before: Zhang Jun Inventor before: Dong Meisheng |
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| COR | Change of bibliographic data |
Free format text: CORRECT: INVENTOR; FROM: GAO FENG ZHANG JINGZHONG MA YANCHUN ZHANG JUN DONG MEISHENG TO: XIE SHAOYING GAO YUAN GAO FENG ZHAO PEIJUN ZHANG JUN |