CN104998426A - Device for controlling and reducing accumulation of biuret in equipment and use method thereof - Google Patents
Device for controlling and reducing accumulation of biuret in equipment and use method thereof Download PDFInfo
- Publication number
- CN104998426A CN104998426A CN201510313719.5A CN201510313719A CN104998426A CN 104998426 A CN104998426 A CN 104998426A CN 201510313719 A CN201510313719 A CN 201510313719A CN 104998426 A CN104998426 A CN 104998426A
- Authority
- CN
- China
- Prior art keywords
- biuret
- equipment
- condenser
- vapor seperator
- heat
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
The invention discloses a device for controlling and reducing accumulation of biuret in equipment. The device for controlling and reducing the accumulation of the biuret in the equipment comprises a urea solution pump (6), an evaporation separator (1), an injection pump (2), a condenser (3) and a condensate storage tank (4) which are connected with one another in sequence; an outlet end at the top of the evaporation separator (1) is connected with an inlet end of the injection pump (2), an outlet end of the injection pump (2) is connected with an inlet end of the condenser (3), an outlet end of the condenser (3) is connected with an inlet of the condensate storage tank (4), and the bottom end of the evaporation separator (1) is connected with the urea solution pump (6); five circles of heating coils (5) are arranged on the outer wall of the top of the evaporation separator (1), and the heating coils (5) are wrapped with heat retaining asbestos. By means of the device for controlling and reducing the accumulation of the biuret in the equipment, the frequency of non-plan shutdown caused by disengagement of the biuret is effectively avoided, and the continuous and stable operation of a system is guaranteed.
Description
Technical field
The present invention relates to chemical field, particularly relate to a kind of control, reduce the device accumulated in equipment of biuret.
Background technology
Evaporization process in ammonia vaporizing extract process urea production process of the prior art be by vacuum preconcentrator after 85% urine to deliver to evaporation dense further, deliver to granulation after ultimate density reaches 99.75%.In the technique of above-mentioned prior art, evaporating the gas phase of secondary vacuum seperator because urine concentration is more than 95%, vacuum reaches absolute pressure 0.0034MPa, and urine easily condensation reaction occurs with this understanding, and its chemical equation is as follows:
CO(NH
2)
2+CO(NH
2)
2＝NH
2CONHCONH
2+NH
3
Dual circulation separator is whirlwind separator, and its gas phase can carry a small amount of urine drop, and part urine drop reduces crystallization at separator top due to temperature, fails to flow down along inwall in time, is attached on separator inwall.In production status, growth in time, is attached to the urea crystals thing at separator top, thus condensation reaction occurs.This phenomenon, with continuing of producing, occurs all the time, just defines the accumulation of biuret.
Biuret is a kind of solid matter and not easily decomposes, and to a certain degree namely comes off when attachment is accumulated to, and blocking bottom urine pump intake, causes pump not look up and down, and evaporation, granulating system are stopped.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of structure is simple, cost is low, easy and simple to handle control, reduce the device that biuret accumulates in equipment, described device effectively avoids because biuret comes off the frequency of the unplanned parking caused, and ensure that the continuous and steady operation of system.
The device that a kind of control, minimizing biuret are accumulated in equipment, it comprises the urine pump, vapor seperator, jet pump, condenser and the condensate liquid storage tank that connect successively, the top exit end of described vapor seperator is connected with the arrival end of described jet pump, the port of export of described jet pump is connected with the arrival end of described condenser, the port of export of described condenser is connected with the entrance of described condensate liquid storage tank, and the bottom of described vapor seperator is connected with described urine pump; Described vapor seperator top exterior walls is provided with five circle heat(ing) coils, and described heat(ing) coil adopts insulation asbestos to wrap up.
Control of the present invention, reduce the device accumulated in equipment of biuret, wherein, described heat(ing) coil by the carbon steel of Φ 22 × 2 material around forming.
The using method of the device that control of the present invention, minimizing biuret are accumulated in equipment, it comprises the steps:
In ammonia vaporizing extract process urea production, urine is delivered to further concentrate in vapor seperator, vacuum absolute pressure is 0.0034MPa, the gas phase that described vapor seperator is separated to enters in jet pump, jet pump described gas phase is extracted out fast and pressurized delivered to condenser in condensation process, and condensate liquid is delivered in condensate liquid storage tank, in whole device production process, 0.34MPa is passed in the top heat(ing) coil of described vapor seperator, the saturated vapor of 147 DEG C, the flow direction of described saturated vapor is for flow from high to low, heat to the top of described vapor seperator, the urea crystals of separator inwall is reduced with this, thus realize reducing biuret Accumulation Phenomenon.
The present invention controls, reduce the biuret device difference from prior art of accumulating in equipment is: the present invention controls, reduce device that biuret accumulates in equipment effectively avoids because biuret comes off the frequency of the unplanned parking caused, and ensure that the continuous and steady operation of system; Reduce production cost, improve economic benefit.
In the heating plate coil pipe of vapor seperator top, pass into 0.34MPa, the saturated vapor of 147 DEG C, steam flow high in and low out is used for, to the heating of vapor seperator top exterior walls, reducing the accumulation of biuret at inwall; Vapor seperator top exterior walls is close to by heat(ing) coil, wraps up with insulation asbestos, reduces thermal loss.The condensate liquid obtained in condensate liquid storage tank can re-use in retrieval system.
Below in conjunction with accompanying drawing, the device that control of the present invention, minimizing biuret are accumulated in equipment is described further.
Accompanying drawing explanation
Fig. 1 is the structural representation that the present invention controlled, reduced the device that biuret is accumulated in equipment.
Detailed description of the invention
As shown in Figure 1, the device that the present invention controls, minimizing biuret is accumulated in equipment comprises the urine pump 6, vapor seperator 1, jet pump 2, condenser 3 and the condensate liquid storage tank 4 that connect successively, the top exit end of described vapor seperator 1 is connected with the arrival end of described jet pump 2, the port of export of described jet pump 2 is connected with the arrival end of described condenser 3, the port of export of described condenser 3 is connected with the entrance of described condensate liquid storage tank 4, and the bottom of described vapor seperator 1 is connected with described urine pump 6; Described vapor seperator 1 top exterior walls is provided with five circle heat(ing) coils 5, and described heat(ing) coil 5 adopts insulation asbestos to wrap up; Described heat(ing) coil 5 by the carbon steel of Φ 22 × 2 material around forming.
The using method of the device that control of the present invention, minimizing biuret are accumulated in equipment, comprises the steps:
In ammonia vaporizing extract process urea production, urine is delivered to further concentrate in vapor seperator 1, vacuum absolute pressure is 0.0034MPa, the gas phase that described vapor seperator 1 is separated to enters in jet pump 2, described jet pump 2 described gas phase is extracted out fast and pressurized delivered to condenser 3 in condensation process, and condensate liquid is delivered in condensate liquid storage tank 4, in whole device production process, 0.34MPa is passed in the top heat(ing) coil 5 of described vapor seperator 1, the saturated vapor of 147 DEG C, the flow direction of described saturated vapor is for flow from high to low, heat to the top of described vapor seperator 1.
Above-described embodiment is only be described the preferred embodiment of the present invention; not scope of the present invention is limited; under not departing from the present invention and designing the prerequisite of spirit; the various distortion that those of ordinary skill in the art make technical scheme of the present invention and improvement, all should fall in protection domain that claims of the present invention determines.
Claims (3)
1. a control, reduce the device that biuret is accumulated in equipment, it is characterized in that: comprise the urine pump (6) connected successively, vapor seperator (1), jet pump (2), condenser (3) and condensate liquid storage tank (4), the top exit end of described vapor seperator (1) is connected with the arrival end of described jet pump (2), the port of export of described jet pump (2) is connected with the arrival end of described condenser (3), the port of export of described condenser (3) is connected with the entrance of described condensate liquid storage tank (4), the bottom of described vapor seperator (1) is connected with described urine pump (6), described vapor seperator (1) top exterior walls is provided with five circle heat(ing) coils (5), and described heat(ing) coil (5) adopts insulation asbestos to wrap up.
2. control according to claim 1, reduce the device accumulated in equipment of biuret, it is characterized in that: described heat(ing) coil (5) by the carbon steel of Φ 22 × 2 material around forming.
3. the using method of the device that control according to claim 2, minimizing biuret are accumulated in equipment, is characterized in that: comprise the steps:
In ammonia vaporizing extract process urea production, urine is delivered to further concentrate in vapor seperator (1), vacuum absolute pressure is 0.0034MPa, the gas phase that described vapor seperator (1) is separated to enters in jet pump (2), described jet pump (2) described gas phase is extracted out fast and pressurized delivered to condensation process in condenser (3), and condensate liquid is delivered in condensate liquid storage tank (4), in whole device production process, 0.34MPa is passed in the top heat(ing) coil (5) of described vapor seperator (1), the saturated vapor of 147 DEG C, the flow direction of described saturated vapor is for flow from high to low, heat to the top of described vapor seperator (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313719.5A CN104998426A (en) | 2015-06-09 | 2015-06-09 | Device for controlling and reducing accumulation of biuret in equipment and use method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510313719.5A CN104998426A (en) | 2015-06-09 | 2015-06-09 | Device for controlling and reducing accumulation of biuret in equipment and use method thereof |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN104998426A true CN104998426A (en) | 2015-10-28 |
Family
ID=54371446
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510313719.5A Pending CN104998426A (en) | 2015-06-09 | 2015-06-09 | Device for controlling and reducing accumulation of biuret in equipment and use method thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN104998426A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202289497U (en) * | 2011-11-07 | 2012-07-04 | 毕节金河化工有限公司 | Urea solution evaporating and concentrating equipment |
| CN202315330U (en) * | 2011-09-23 | 2012-07-11 | 山西省霍州市化学工业有限责任公司 | Urea solution concentrating device |
| CN202526921U (en) * | 2012-03-28 | 2012-11-14 | 贵州宜化化工有限责任公司 | Urea evaporation and condensation system |
| CN203303669U (en) * | 2013-05-29 | 2013-11-27 | 王献 | Evaporative separator for urea production |
| CN203886203U (en) * | 2013-12-27 | 2014-10-22 | 中盐安徽红四方股份有限公司 | Two-stage vacuum system of urea device |
-
2015
- 2015-06-09 CN CN201510313719.5A patent/CN104998426A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202315330U (en) * | 2011-09-23 | 2012-07-11 | 山西省霍州市化学工业有限责任公司 | Urea solution concentrating device |
| CN202289497U (en) * | 2011-11-07 | 2012-07-04 | 毕节金河化工有限公司 | Urea solution evaporating and concentrating equipment |
| CN202526921U (en) * | 2012-03-28 | 2012-11-14 | 贵州宜化化工有限责任公司 | Urea evaporation and condensation system |
| CN203303669U (en) * | 2013-05-29 | 2013-11-27 | 王献 | Evaporative separator for urea production |
| CN203886203U (en) * | 2013-12-27 | 2014-10-22 | 中盐安徽红四方股份有限公司 | Two-stage vacuum system of urea device |
Non-Patent Citations (1)
| Title |
|---|
| 黄艳芹等: "《化工工艺学》", 29 February 2012, 郑州大学出版社 * |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105253917B (en) | A kind of preparation method of chemical vapor deposition rhenium metal presoma | |
| CN102698451A (en) | Heat pump type low-temperature evaporating device and method | |
| CN202620748U (en) | Heat-pump type low-temperature evaporation device | |
| CN207112362U (en) | Avoid the nitrogen fertilizer plant high-pressure carbon dioxide blowdown system of line clogging | |
| CN104069642A (en) | Positive-displacement compressor MVR heat pump evaporation system with adjustable pressure ratio working condition | |
| US10502466B2 (en) | Heat exchanger for cooling a heating tube and method thereof | |
| CN204891246U (en) | Device that control, reduction biuret are accumulated in equipment | |
| CN104998426A (en) | Device for controlling and reducing accumulation of biuret in equipment and use method thereof | |
| CN102980023A (en) | Liquid ammonia vaporization method | |
| CN103648606B (en) | Droplet separator and reaction system | |
| JP4349656B2 (en) | Organic waste liquid processing apparatus and processing method | |
| CN108940092A (en) | A kind of process with raw material ammonia water production denitration ammonium hydroxide | |
| CN103191878B (en) | The flusher of dual circulation separator and method in carbamide production system | |
| CN211676384U (en) | Coolant circulation type cooling crystallization system | |
| CN202844605U (en) | Temperature-controllable split type liquid ammonia evaporator | |
| RU2528452C2 (en) | Method of heating at steam heat exchangers and plant to this end | |
| KR101974014B1 (en) | Evaporative Desalination Apparatus, Desalination Method and System therewith | |
| CN105188879A (en) | Mist separation apparatus, reactive system, epsilon-caprolactam production method, and use in production of epsilon-caprolactam | |
| CN103332822A (en) | Device for separating and dehydrating from to-be-processed fluid and method thereof | |
| CN202411026U (en) | Washing device of two-section evaporation separator in urea production system | |
| CN204079501U (en) | A kind of integral type evaporation and crystallization system | |
| CN204042833U (en) | One is steamed system | |
| RU203706U1 (en) | UNIT OF CONCENTRATION OF CARBAMIDE SOLUTION WITH STEAM BLOWING OF THE INNER SURFACE OF THE VACUUM SEPARATOR | |
| RU204557U1 (en) | UNIT OF CONCENTRATION OF CARBAMIDE SOLUTION WITH ELECTRIC HEATING OF THE DOME OF THE VACUUM SEPARATOR | |
| RU201591U1 (en) | UNIT OF CONCENTRATION OF CARBAMIDE SOLUTION |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20151028 |
|
| WD01 | Invention patent application deemed withdrawn after publication |