Urea hydrophobic treatment equipment and urea system
By designing urea hydrophobic treatment equipment in the urea hydrolysis system, mixing the hydrophobic with process water using a water collector and a mixer, and adjusting the flow rate according to the temperature, the high consumption and safety hazards of hydrophobic treatment in the urea hydrolysis system are solved, and the problem of high consumption and safety hazards of hydrophobic treatment in the urea hydrolysis system is realized Temperature control and cost reduction.
Patent Information
- Application Number
- CN202421063412.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-05-15
- Publication Date
- 2025-01-03
- Estimated Expiration
- 2034-05-15
AI Technical Summary
In the existing urea hydrolysis system, heat tracing and hydrophobic treatment has problems such as high consumption of desalinate, high cost, excessive hydrophobic temperature leading to false liquid level and damage to the hydrophobic pump, and the safety hazards brought by hot steam carrying hot water.
Design a urea hydrophobic treatment equipment, including a hydrophobic tank, a water collector, a mixer and a controller, collecting the water by the water collector and mixing it with the process water and then transporting it to the water-repellent tank, and adjusting the process water flow rate using the temperature measurement equipment to maintain The temperature of the mixture is within the appropriate range to avoid false liquid levels and high consumption.
It effectively reduces the temperature in the hydrophobic tank, avoids false liquid level and damage to the hydrophobic pump, reduces desalination consumption, and improves system safety and economy.
Smart Images
Figure CN222287269U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of urea preparation, in particular to urea hydrophobic treatment equipment and a urea system. Background Art
[0002] At present, a large amount of heating water will be generated in the steam heating and coil heating links of the urea hydrolysis system. The more common solution for the treatment of heating water is to discharge the heating water into the water trap, spray it inside the box to cool it down, and then discharge it to the chemical water system through the water trap pump. The spraying water in the water trap is usually demineralized water. This is mainly because if the process water is directly used to spray and cool the water, when the temperature of the water trap is too high, the effect of spraying and cooling is poor, which will cause the temperature of the mixed liquid to exceed 60°C. At this time, the calcium and magnesium substances in the mixed liquid will crystallize to form scale, and the scale will adhere to the inner wall of the water trap, which is difficult to clean. Although the direct use of demineralized water for spraying and cooling can avoid the adhesion of scale on the inner wall of the water trap, the consumption of demineralized water is large, and there is a problem of high cost of use. At the same time, when the temperature of the drain is too high, the spray water used for cooling can easily turn into hot steam, forming a false liquid level in the drain tank, causing the drain pump to run at no load, damaging the drain pump and increasing the maintenance and use costs of the drain pump. In addition, the temperature and pressure in the drain tank increase, which can cause hot steam to carry hot water and spray out from the exhaust port, posing a safety hazard.
[0003] Therefore, there is an urgent need for a urea hydrophobic treatment device and a urea system to solve the above problems. Utility Model Content
[0004] The purpose of the utility model is to solve the problems of large consumption of desalted water and high cost in the prior art for cooling down the drain, and the problem that the drain temperature is too high, which easily forms a false liquid level in the drain tank, causing the drain pump to run at no load, damaging the drain pump, and increasing the maintenance and use cost of the drain pump, and the problem that the temperature in the drain tank rises and the pressure increases, which also causes hot steam to carry hot water and spray out from the exhaust port, causing safety hazards. A urea drain treatment device and a urea system are provided.
[0005] The technical solution of the utility model is as follows:
[0006] A urea hydrophobic treatment device comprises a hydrophobic tank, a water collector, a mixer and a controller;
[0007] The water collector is used to collect at least one drain and transport the collected drain to the mixer. The mixer is used to mix process water and drain from the water collector and then transport the mixed water to the drain tank. The controller is used to adjust the process water flow rate transported to the mixer according to the mixed liquid temperature value measured by the temperature measuring device of the drain tank.
[0008] Preferably, the adjusting the flow rate of process water delivered to the mixer according to the mixed liquid temperature value measured by the temperature measuring device of the drain tank specifically includes:
[0009] If the mixed liquid temperature value measured by the temperature measuring device is greater than the temperature threshold, the controller controls to increase the process water flow rate delivered to the mixer; if the mixed liquid temperature value measured by the temperature measuring device is not greater than the temperature threshold, the controller controls to reduce the process water flow rate delivered to the mixer.
[0010] Preferably, a flow control valve is provided on the drain pipe corresponding to the water inlet of the water collector.
[0011] Preferably, a temperature measuring component is also provided on the drain pipeline for sending the temperature value of the drain to the controller in real time, and the controller is also used to adjust the opening of the flow control valve according to the mixed liquid temperature value and the drain temperature value measured by the temperature measuring device.
[0012] Preferably, the mixer is a three-way water mixing valve.
[0013] Preferably, the three-way water mixing valve is made of copper.
[0014] Preferably, the temperature measuring device is a thermometer.
[0015] Preferably, the drain tank further comprises a liquid level meter and a water outlet pump, wherein the liquid level meter is used to detect the liquid level value in the drain tank, and when the liquid level value in the drain tank reaches a set value, water is discharged through the water outlet pump.
[0016] A urea system comprises the urea hydrophobic treatment equipment described above.
[0017] Preferably, the urea system comprises a urea hydrolysis system, a urea storage system and a urea dissolution system.
[0018] According to the above technical scheme, based on the urea hydrophobic treatment equipment, each hydrophobic channel can be collected by setting a water collector, and further setting a mixer can mix process water and the hydrophobic channel from the water collector and cool them down before conveying them to the hydrophobic tank, thereby reducing the temperature of the mixed liquid entering the hydrophobic tank, and further adjusting the flow rate of process water conveyed to the mixer based on the temperature value of the mixed liquid measured by the temperature measuring device in the hydrophobic tank. In actual application, it can effectively ensure that the temperature of the mixed liquid in the hydrophobic tank is maintained within the set temperature value, instead of directly connecting each hydrophobic channel of the urea system to the multiple water inlets of the hydrophobic tank through pipelines as in the prior art, and then spraying and cooling the water through the desalted water spray structure on the top of the hydrophobic tank, which results in the formation of a false liquid level in the hydrophobic tank when the temperature of the hydrophobic channel is too high, causing the hydrophobic pump to run at no load and consuming a large amount of desalted water. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] Figure 1 It is a structural schematic diagram of urea hydrophobic treatment equipment.
[0020] Description of Reference Numerals
[0021] 1. Drain tank; 11. Temperature measuring equipment; 2. Water collector; 3. Mixer. DETAILED DESCRIPTION
[0022] The specific implementation of the embodiment of the utility model is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the embodiment of the utility model, and is not used to limit the embodiment of the utility model.
[0023] In the description of this application, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating relative importance or implicitly indicating the number of technical features indicated. Therefore, unless otherwise specified, features defined as "first" and "second" may explicitly or implicitly include one or more of the features; "plurality" means two or more. The term "include" and any variation thereof means non-exclusive inclusion, possible presence or addition of one or more other features, units, components and / or combinations thereof.
[0024] In addition, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be internally connected between two components. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.
[0025] The first aspect of the utility model provides a urea hydrophobic treatment device, such as Figure 1 As shown, the urea hydrophobic treatment equipment includes a hydrophobic tank 1, a water collector 2, a mixer 3 and a controller;
[0026] The water collector 2 is used to collect at least one drain water and transport the collected drain water to the mixer 3. The mixer 3 is used to mix process water and drain water from the water collector 1 and then transport them to the drain tank 1. The controller is used to adjust the process water flow rate transported to the mixer 3 according to the mixed liquid temperature value measured by the temperature measuring device 11 of the drain tank 1.
[0027] According to the above technical scheme, based on the urea hydrophobic treatment equipment, each hydrophobic channel can be collected by setting a water collector, and further setting a mixer can mix process water and the hydrophobic channel from the water collector and cool them down before conveying them to the hydrophobic tank, thereby reducing the temperature of the mixed liquid entering the hydrophobic tank, and further adjusting the flow rate of process water conveyed to the mixer based on the temperature value of the mixed liquid measured by the temperature measuring device in the hydrophobic tank. In actual application, it can effectively ensure that the temperature of the mixed liquid in the hydrophobic tank is maintained within the set temperature value, instead of directly connecting each hydrophobic channel of the urea system to the multiple water inlets of the hydrophobic tank through pipelines as in the prior art, and then spraying and cooling the water through the desalted water spray structure on the top of the hydrophobic tank, which results in the formation of a false liquid level in the hydrophobic tank when the temperature of the hydrophobic channel is too high, causing the hydrophobic pump to run at no load and consuming a large amount of desalted water.
[0028] In the urea hydrophobic treatment equipment of the present invention, preferably, the process water flow rate delivered to the mixer 3 is adjusted according to the mixed liquid temperature value measured by the temperature measuring device 11 of the hydrophobic tank 1, specifically including:
[0029] If the temperature value of the mixed liquid measured by the temperature measuring device 11 is greater than the temperature threshold, the controller controls to increase the process water flow rate delivered to the mixer 3; if the temperature value of the mixed liquid measured by the temperature measuring device 11 is not greater than the temperature threshold, the controller controls to reduce the process water flow rate delivered to the mixer 3. Specifically, the temperature threshold is set according to actual needs, as long as it can ensure that the temperature of the mixed liquid entering the drain tank 1 is not greater than the scaling temperature of the process water. Preferably, the temperature threshold does not exceed 60°C, and more preferably, the temperature threshold does not exceed 55°C, so as to ensure that the process water entering the drain tank 1 will not scale and adhere to the inner wall of the drain tank 1 due to excessively high temperature, making it difficult to clean.
[0030] In the urea hydrophobic treatment equipment described in the utility model, preferably, the hydrophobic tank 1 also includes a liquid level meter and a water outlet pump, the liquid level meter is used to detect the liquid level value in the hydrophobic tank 1, and when the liquid level value in the hydrophobic tank 1 reaches a set value, water is discharged through the water outlet pump, thereby achieving effective treatment of hydrophobicity. Specifically, the set value can be set according to actual needs, and can achieve real-time and effective treatment of hydrophobicity. Preferably, the set value can be, for example, one-third to two-thirds of the liquid volume inside the hydrophobic tank 1.
[0031] In the urea hydrophobic treatment equipment of the present invention, preferably, a flow control valve is provided on the hydrophobic pipeline corresponding to the water inlet of the water collector 2. Specifically, Figure 1 As shown, the steam drain from the plant product gas, the drain from at least one urea hydrolysis system, the drain from the urea dissolution system and the drain from the urea storage system are all connected to the multiple water inlets of the water collector 2 through the drain pipeline, so as to achieve the pre-mixing of each drain in the water collector 2 (the temperature of each drain is usually different), and further, a flow control valve is set on each of the drain pipelines, so that the opening of the flow control valve can be adjusted according to the temperature of the mixed liquid in the drain tank 1. For example, when the temperature of the mixed liquid in the drain tank 1 is close to or exceeds the temperature threshold, the opening of the flow control valve on at least one of the drain pipelines can be reduced while increasing the process water flow delivered to the mixer 3, so as to reduce the drain inlet amount. Preferably, according to the process safety production needs, the opening of the flow control valve on the drain pipeline with a lower importance level and no impact on process safety is adjusted first.
[0032] Further preferably, a temperature measuring component is also provided on the drain pipeline for sending the temperature value of the drain to the controller in real time, and the controller is also used to adjust the opening of the flow control valve according to the temperature value of the mixed liquid measured by the temperature measuring device 11 and the temperature value of the drain. Specifically, by further acquiring the temperature of each drain in real time and combining it with the temperature value of the mixed liquid in the drain tank 1, when actually adjusting the temperature of the mixed liquid in the drain tank 1, the opening of the flow control valve can be further adjusted according to the temperature of each drain, thereby effectively ensuring that the temperature of the mixed liquid in the drain tank 1 is always not greater than the temperature threshold, and then while effectively treating the drain, a large amount of desalted water will not be consumed, resulting in high processing costs, and the formation of false liquid levels due to hot steam will cause the drain pump to run at no load, damage the drain pump, and increase the maintenance and use costs of the drain pump. Among them, the flow control valve can be a mechanical flow regulating valve or an electronic flow regulating valve, which can be set according to actual needs. Preferably, the flow control valve is an electronic flow regulating valve. In a specific implementation, the temperature measurement component and the temperature measurement device 11 are both thermometers, and of course they can also be other measurement devices that can measure the temperature of a liquid, as long as they have the same function.
[0033] In the urea hydrophobic treatment equipment described in the utility model, preferably, the mixer 3 is a three-way water mixing valve. Figure 1 As shown, by directly designing the mixer 3 as a three-way water mixing valve, in actual application, the process cost can be effectively reduced, and the temperature of the mixed liquid in the drain tank 1 can also be effectively controlled. Of course, without considering the process cost, the mixer 3 can also use a special mixer with better effect, so as to better control the temperature of the mixed liquid in the drain tank 1. In a preferred embodiment, the three-way water mixing valve is made of copper, so as to ensure the mixing effect of hot drain water and cold process water while effectively ensuring its service life.
[0034] The second aspect of the utility model provides a urea system, comprising the urea hydrophobic treatment device, so as to achieve effective treatment of hydrophobicity without consuming desalted water and causing the hydrophobic pump to run at no load due to false liquid level of hot steam.
[0035] In a specific embodiment, Figure 1 As shown, the urea system includes a urea hydrolysis system, a urea storage system and a urea dissolution system.
[0036] The present invention will be described in detail below through embodiments, but the protection scope of the present invention is not limited thereto.
[0037] Example 1
[0038] Use Figure 1 The urea hydrophobic treatment device shown is used for treating hydrophobicity in a urea system. Specifically, the urea hydrophobic treatment device includes a hydrophobic tank 1, a water collector 2, a mixer 3 and a controller;
[0039] The water collector 2 is used to collect at least one drain water and transport the collected drain water to the mixer 3. The mixer 3 is used to mix process water and drain water from the water collector 1 and then transport them to the drain tank 1. The controller is used to adjust the process water flow rate transported to the mixer 3 according to the mixed liquid temperature value measured by the temperature measuring device 11 of the drain tank 1; the process of adjusting the process water flow rate transported to the mixer 3 according to the mixed liquid temperature value measured by the temperature measuring device 11 of the drain tank 1 specifically includes: if the mixed liquid temperature value measured by the temperature measuring device 11 is greater than the temperature threshold, the controller controls to increase the process water flow rate transported to the mixer 3; if the mixed liquid temperature value measured by the temperature measuring device 11 is not greater than the temperature threshold, the controller controls to reduce the process water flow rate transported to the mixer 3;
[0040] The mixer 3 is a three-way water mixing valve; the three-way water mixing valve is made of copper; the temperature measuring device 11 is a thermometer.
[0041] In actual application, the steam drain from the plant product gas heating, the drain from at least one urea hydrolysis system, the drain from the urea dissolution system and the drain from the urea storage system are all transported to the water collector 2 through the drain pipeline, and then the water collector 2 collects and mixes the drains from various routes and transports them together with the process water to the mixer 3 for mixing and cooling, and then the mixed liquid after mixing in the mixer 3 is transported to the drain tank 1, and the temperature of the mixed liquid inside the drain tank 1 is measured by the thermometer, and finally the controller adjusts the process water flow rate transported to the mixer 3 according to the mixed liquid temperature value measured by the thermometer.
[0042] After testing, it is found that the urea hydrophobic treatment equipment described in the utility model can achieve effective treatment of various hydrophobic channels in the urea system without using desalted water, compared with the existing urea hydrophobic treatment equipment, and will not form a false liquid level due to the hot steam in the hydrophobic tank, causing the hydrophobic pump to run at no load.
[0043] Example 2
[0044] The implementation is carried out with reference to Example 1, except that a flow control valve is provided on the drain pipe corresponding to the water inlet of the water collector 2; a temperature measuring component is also provided on the drain pipe for sending the temperature value of the drain to the controller in real time, and the controller is also used to adjust the opening of the flow control valve according to the temperature value of the mixed liquid measured by the temperature measuring device 11 and the temperature value of the drain.
[0045] It has been found that the urea hydrophobic treatment equipment described in the utility model can further effectively treat the hydrophobicity and effectively control the temperature of the mixed liquid in the hydrophobic tank compared to the solution in Example 1.
[0046] The urea hydrophobic treatment equipment provided by the utility model can collect the hydrophobic water from various channels by arranging a water collector, and further arranging a mixer to mix and cool the process water and the hydrophobic water from the water collector and then convey them to the hydrophobic tank, thereby reducing the temperature of the mixed liquid entering the hydrophobic tank, and further adjusting the flow rate of the process water conveyed to the mixer based on the temperature value of the mixed liquid measured by the temperature measuring device in the hydrophobic tank. In actual application, it can effectively ensure that the temperature of the mixed liquid in the hydrophobic tank is maintained within the set temperature value, instead of directly connecting the hydrophobic water from various channels of the urea system to the multiple water inlets of the hydrophobic tank through pipelines, and then spraying and cooling the water through the desalted water spraying structure on the top of the hydrophobic tank, as in the prior art, resulting in the formation of a false liquid level in the hydrophobic tank when the temperature of the hydrophobic water is too high, causing the hydrophobic pump to run at no load and consuming a large amount of desalted water.
[0047] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings, but the present invention is not limited thereto. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations. However, these simple modifications and combinations should also be regarded as the contents disclosed by the present invention and belong to the protection scope of the present invention.
Claims
1. A urea hydrophobic treatment device, characterized in that: The urea hydrophobic treatment equipment comprises a hydrophobic tank (1), a water collector (2), a mixer (3) and a controller; The water collector (2) is used to collect at least one drain and transport the collected drain to the mixer (3); the mixer (3) is used to mix process water and drain from the water collector (2) and transport the mixed water to the drain tank (1); the controller is used to adjust the flow rate of process water transported to the mixer (3) according to the temperature value of the mixed liquid measured by the temperature measuring device (11) of the drain tank (1).
2. The urea hydrophobic treatment equipment according to claim 1, characterized in that: The method of adjusting the flow rate of process water delivered to the mixer (3) according to the mixed liquid temperature value measured by the temperature measuring device (11) of the drain tank (1) specifically includes: If the mixed liquid temperature value measured by the temperature measuring device (11) is greater than a temperature threshold, the controller controls to increase the process water flow rate delivered to the mixer (3); if the mixed liquid temperature value measured by the temperature measuring device (11) is not greater than the temperature threshold, the controller controls to reduce the process water flow rate delivered to the mixer (3).
3. The urea hydrophobic treatment equipment according to claim 1, characterized in that: A flow control valve is provided on the drainage pipeline corresponding to the water inlet of the water collector (2).
4. The urea hydrophobic treatment equipment according to claim 3, characterized in that: The drain pipeline is also provided with a temperature measuring component for sending the temperature value of the drain to the controller in real time. The controller is also used to adjust the opening of the flow control valve according to the temperature value of the mixed liquid and the temperature value of the drain measured by the temperature measuring device (11).
5. The urea hydrophobic treatment equipment according to claim 1, characterized in that: The mixer (3) is a three-way water mixing valve.
6. The urea hydrophobic treatment equipment according to claim 5, characterized in that: The three-way water mixing valve is made of copper.
7. The urea hydrophobic treatment equipment according to claim 1, characterized in that: The temperature measuring device (11) is a thermometer.
8. The urea hydrophobic treatment equipment according to claim 1, characterized in that: The drain tank (1) further comprises a liquid level meter and a water outlet pump, wherein the liquid level meter is used to detect the liquid level value in the drain tank (1), and when the liquid level value in the drain tank (1) reaches a set value, water is discharged through the water outlet pump.
9. A urea system, characterized in that: The invention comprises the urea hydrophobic treatment equipment as described in any one of claims 1 to 8.
10. The urea system according to claim 9, characterized in that The urea system includes a urea hydrolysis system, a urea storage system and a urea dissolution system.