CN212448977U - Urea solution storage system - Google Patents
Urea solution storage system Download PDFInfo
- Publication number
- CN212448977U CN212448977U CN202020758547.9U CN202020758547U CN212448977U CN 212448977 U CN212448977 U CN 212448977U CN 202020758547 U CN202020758547 U CN 202020758547U CN 212448977 U CN212448977 U CN 212448977U
- Authority
- CN
- China
- Prior art keywords
- water
- urea solution
- tank
- valve
- storage tank
- 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.)
- Active
Links
Images
Landscapes
- Exhaust Gas After Treatment (AREA)
Abstract
The utility model discloses a urea solution storage system, which comprises a storage tank for storing urea solution and a water tank for storing water; the water pitcher passes through moisturizing pipeline and moisturizing equipment intercommunication, and the water pitcher still communicates through air inlet pipeline and storage tank, makes the ammonia that volatilizees in the storage tank can enter into the water pitcher through the air inlet pipeline, and the water pitcher still communicates through drainage pipeline and storage tank, makes during the water that has dissolved the ammonia in the water pitcher can discharge the storage tank through drainage pipeline, sets up like this, can prevent that the ammonia from volatilizing in the air. In addition, a heating part for heating the urea solution is arranged in the storage tank, a heat source of the heating part is steam, and the purpose of adjusting the heat productivity is achieved by adjusting the steam flow. In addition, the system also comprises a control unit, and the control unit automatically controls the injection amount and the supply amount of the urea solution in the storage tank and the water replenishing amount and the water discharging amount of the water tank according to the current liquid level and the current temperature of the urea solution, so that the automation degree of the system is high.
Description
Technical Field
The utility model relates to a reductant raw materials storage device technical field, especially a urea solution storage system of SCR denitration technology.
Background
The commonly used reducing agent raw materials in the SCR denitration process are liquid ammonia and urea solution, and in comparison, the storage risk of the urea solution is low, so most production enterprises select the urea solution as the reducing agent raw material of the SCR denitration process at present.
The urea solution is usually stored in a storage tank, and when the urea solution is injected into the storage tank or supplied to the storage tank, ammonia gas overflows from the interior of the storage tank along with the increase and decrease of the liquid level of the storage tank, and permeates the whole urea solution storage area, and the ammonia gas has certain irritation and can cause physical discomfort to people working in the urea solution storage area.
In view of this, how to alleviate the problem of ammonia volatilization in the urea solution storage tank is a technical problem to be solved by those skilled in the art.
SUMMERY OF THE UTILITY MODEL
In order to solve the technical problem, the utility model provides a urea solution storage system, which comprises a storage tank for storing urea solution and a water tank for storing water; the water tank is communicated with water supplementing equipment through a water supplementing pipeline and is also communicated with the storage tank through an air inlet pipeline, so that ammonia volatilized from the storage tank can enter the water tank through the air inlet pipeline, and is also communicated with the storage tank through a water drainage pipeline, so that water with ammonia dissolved in the water tank can be discharged into the storage tank through the water drainage pipeline.
This urea solution storage system, the ammonia that volatilizees in the follow storage tank can enter into the water pitcher through the air inlet pipe way in to dissolve the aquatic in the water pitcher, and, the water that has dissolved the ammonia in the water pitcher can get back to the storage tank again through water drainage pipeline in, consequently can prevent effectively that the ammonia from volatilizing in the air.
Optionally, baffles are arranged inside the water tank, the number of the baffles is one or more, and when the baffles are arranged, the baffles are sequentially arranged from bottom to top at intervals.
Optionally, a water replenishing valve is arranged on the water replenishing pipeline, a drain valve is arranged on the drain pipeline, the storage tank is communicated with the liquid injection equipment through a liquid inlet pipeline and is also communicated with the liquid using equipment through a liquid supply pipeline, and a liquid inlet valve and a liquid supply valve are respectively arranged on the liquid inlet pipeline and the liquid supply pipeline; the urea solution storage system further comprises a liquid level detection part and a first control unit, wherein the liquid level detection part is used for detecting the liquid level of the storage tank, and the first control unit can automatically adjust the water replenishing valve, the drain valve, the liquid inlet valve and the opening degree of the liquid supply valve according to the detection result of the liquid level detection part.
Optionally, the first control unit presets the following control program: and keeping the water supplementing valve open during the period that the liquid inlet valve is opened and the liquid level in the storage tank does not reach the preset upper limit value of the liquid level.
Optionally, the first control unit further presets the following control program: and keeping the drain valve open during the period that the liquid supply valve is opened and the liquid level in the storage tank does not reach the preset upper limit value of the liquid level.
Optionally, the air inlet pipeline is connected between the top of the storage tank and the bottom of the water tank, the outlet of the water replenishing pipeline is connected to the top of the water tank, and the outlet of the water drainage pipeline and the outlet of the liquid inlet pipeline both extend to the bottom of the storage tank.
Optionally, the water replenishing apparatus is an apparatus capable of supplying demineralized water.
Optionally, the urea solution storage system further comprises a heating component, the heating component is arranged inside the storage tank, and the heating component heats the urea solution in the storage tank by using steam.
Optionally, the heating member is disposed in a bottom middle region of the tank.
Optionally, the heating part is communicated with the steam generation device through a steam injection pipeline, a steam regulating valve is arranged on the steam injection pipeline, the urea solution storage system further comprises a temperature detection part for detecting the temperature of the urea solution in the storage tank and a second control unit, and the second control unit can automatically regulate the opening degree of the steam regulating valve according to the detection result of the temperature detection part.
Drawings
Fig. 1 is a schematic diagram of an embodiment of a urea solution storage system provided by the present invention.
The reference numerals are explained below:
1, a storage tank, 11 liquid inlet pipelines, 111 liquid inlet valve groups, 12 liquid supply pipelines, 121 liquid supply valve groups, 13 liquid discharge pipelines, 131 liquid discharge valves and 14 overflow pipelines;
2, a water tank, 21, a water replenishing valve, 211, a water replenishing valve, 22, an air inlet pipeline, 23, a water discharging pipeline, 231, a water discharging valve and 24, wherein the water tank is connected with the water replenishing pipeline;
3, baffle plate;
4 heating means, 41 steam injection line, 411 steam regulating valve, 42 steam exhaust line;
5 liquid level detection part, 6 temperature detection part.
Detailed Description
In order to make those skilled in the art better understand the technical solution of the present invention, the following provides a detailed description of the technical solution of the present invention with reference to the accompanying drawings.
As shown, the urea solution storage system comprises a tank 1 for storing the urea solution and a water tank 2 for storing water.
The water tank 2 is communicated with a water replenishing device through a water replenishing pipeline 21. In the illustrated embodiment, the water replenishing device is a device capable of supplying demineralized water, such as a main pipe in an SCR denitration system, and may be in communication with other types of water replenishing devices in practical applications.
The water tank 2 is also communicated with the storage tank 1 through the air inlet pipeline 22 and the water discharge pipeline 23, and thus the ammonia gas volatilized from the storage tank 1 can enter the water tank 2 through the air inlet pipeline 22, so that the ammonia gas is dissolved in the water tank 2, and the water in the water tank 2, in which the ammonia gas is dissolved, can return to the storage tank 1 again through the water discharge pipeline 23. Therefore, the ammonia gas can be effectively prevented from being volatilized into the air.
Preferably, the outlet of the water replenishing pipeline 21 is connected to the top of the water tank 2, and the outlet of the air inlet pipeline 22 is connected to the bottom of the water tank 2, so that water can fall downwards and ammonia gas can flow upwards to generate a convection effect in the water replenishing process, thereby being beneficial to the dissolution of the ammonia gas. When the outlet of the air inlet line 22 is connected to the bottom of the water tank 2, a check valve is provided to prevent water in the water tank 2 from being discharged from the air inlet line 22.
Preferably, the inlet of the water discharge line 23 is connected to the bottom of the water tank 2 to facilitate the discharge of water, and the outlet of the water discharge line 23 extends to the bottom of the storage tank 1 to reduce the volatilization of ammonia gas in the storage tank 1 caused by the water discharge process.
The water replenishing pipeline 21 is provided with a water replenishing valve 211 for adjusting the amount of water replenishing. A drain valve 231 is provided on the drain line 23 for adjusting the amount of water to be drained. In the scheme shown in the figure, a first valve element is connected in series at the upstream of the water replenishing valve 211, a second valve element is connected in series at the downstream of the water replenishing valve 211, a bypass pipeline is arranged, an inlet of the bypass pipeline is connected in parallel at the upstream of the first valve element, an outlet of the bypass pipeline is connected in parallel at the downstream of the second valve element, and a bypass valve is arranged on the bypass pipeline.
An air outlet is arranged at the top of the water tank 2, and when the water tank 2 is replenished with water, the air in the water tank 2 is discharged from the air outlet. The top of the water tank 2 is also provided with an overflow opening which is communicated with the storage tank 1 through an overflow pipeline 24, once the water in the water tank 2 reaches the overflow opening, part of the water is discharged from the overflow pipeline 24 and flows into the storage tank 1. It is preferable that the outlet of the overflow pipe 24 is extended to the bottom of the storage tank 1 to reduce the volatilization of the ammonia gas in the storage tank 1 caused by the overflow process.
Baffle plates 3 are arranged in the water tank 2, the number of the baffle plates 3 can be one or more (three in the figure), and when a plurality of baffle plates are arranged, the baffle plates 3 are arranged at intervals from bottom to top in sequence. Through setting up baffling board 3, the in-process that the ammonia flows upwards need meander and bypass baffling board 3, therefore has increased the contact time of ammonia and water, has increased the area of contact of ammonia and water to more do benefit to the dissolution of ammonia.
The storage tank 1 is communicated with a liquid injection device through a liquid inlet pipeline 11, and a liquid inlet valve 111 is arranged on the liquid inlet pipeline 11 and used for adjusting the injection amount of the urea solution. The outlet of the liquid inlet pipe 11 preferably extends to the bottom of the storage tank 1 to reduce the volatilization of ammonia gas in the storage tank 1 caused by the liquid injection process.
The storage tank 1 is also communicated with a liquid using device through a liquid supply pipeline 12. In the illustrated embodiment, the liquid-consuming apparatus is an SCR denitration reactor, but in actual implementation, the liquid-consuming apparatus may be other apparatus requiring a urea solution. The liquid supply line 12 is provided with a liquid supply valve 121 for adjusting the supply amount of the urea solution.
The bottom of storage tank 1 is equipped with the leakage fluid dram, and the top is equipped with the overflow mouth, and leakage fluid dram and overflow mouth communicate with the catch basin through drainage pipe 13 and overflow pipe 14 respectively, set up flowing back valve 131 on the drainage pipe 13 for adjust the outage. So set up, when wasing storage tank 1, can utilize drainage pipe 13 evacuation washing liquid, moreover, the cleaning process, when the washing liquid in storage tank 1 reachd the overflow mouth, and some washing liquid can overflow the catch basin through overflow pipe 14.
Further, the urea solution storage system further comprises a heating means 4 for heating the urea solution in the storage tank 1 to a suitable temperature (typically 45 ℃ to 60 ℃) to prevent the urea solution from crystallizing.
The conventional urea solution storage tank is provided with a heat tracing band outside the tank, so that the heating efficiency is low, the heating is uneven, and the heating value is inconvenient to adjust.
This scheme, set up heating element 4 inside storage tank 1 to have higher heating efficiency. Preferably in the bottom middle region of the tank 1 to ensure uniform heating.
This scheme, heater block 4 communicates with steam generation equipment through steam injection pipeline 41, through steam exhaust pipeline 42 and hydrophobic pond intercommunication to utilize steam to heat the urea solution in the storage tank 1, be equipped with steam control valve 411 on the steam injection pipeline 41, the regulation calorific capacity that just can be convenient fast through the aperture of adjusting steam control valve 411.
In the illustrated embodiment, a first valve element is connected in series upstream of the steam control valve 411, a second valve element is connected in series downstream of the steam control valve 411, a bypass line is provided, an inlet of the bypass line is connected in parallel upstream of the first valve element, an outlet of the bypass line is connected in parallel downstream of the second valve element, and a bypass valve is provided on the bypass line, so that, when the steam control valve 411 fails, the first valve element and the second valve element can be closed, steam is supplied to the heating element 4 through the bypass line, and the flow rate of the steam is adjusted by the bypass valve.
In the illustrated embodiment, the heating element 4 is in the form of a coil, so that the heating area is relatively large, and the heating speed is high, however, in practical implementation, the form of the heating element 4 is not limited to the coil.
Further, the urea solution storage system further comprises a liquid level detection unit 5 and a first control unit (not shown in the figure). The liquid level detection part 5 is used for detecting the liquid level of the storage tank 1. The first control unit is used for automatically adjusting the input and output of the urea solution in the storage tank 1 and the input and output of the water in the water tank 2 according to the detection result of the liquid level detection part 5, so that the automation degree of the system is high.
Specifically, the first control unit is in communication connection with the water replenishing valve 211, the water discharging valve 231, the liquid inlet valve 111, and the liquid supply valve 121 to send opening degree adjustment instructions to the valves, so that the opening degrees of the valves are changed. Meanwhile, the liquid level detection component 5 is also connected in communication to acquire the current liquid level of the storage tank 1. And the first control unit is internally preset with a liquid level upper limit value and a liquid level lower limit value.
Preferably, the following control program is preset in the first control unit: during the period that the liquid inlet valve 111 is opened and the liquid level in the storage tank 1 is not up to the upper limit, the water replenishing valve 211 is kept opened. So set up, the urea solution injection of storage tank 1 goes on simultaneously with the moisturizing of water pitcher 2, and like this, the ammonia that overflows in the urea solution injection process can dissolve the aquatic in water pitcher 2 better.
Preferably, the following control program is preset in the first control unit: the drain valve 231 is kept open during the period when the liquid supply valve 121 is opened and the liquid level in the tank 1 does not reach the upper limit liquid level value. So set up, the water that has the ammonia dissolved in water pitcher 2 is in storage tank 1 is discharged when storage tank 1 supplies urea solution to with liquid equipment, can alleviate the interior negative pressure phenomenon of storage tank 1 like this, guarantees the smooth supply of urea solution. When the tank 1 supplies the urea solution to the solution using facility, the inside of the tank 1 is in a negative pressure state, and therefore, no ammonia gas escapes.
In summary, the urea solution storage system provided by the present application has the following advantages:
1. can prevent that the ammonia from volatilizing to the air, no matter be storage tank liquid feeding process or supply liquid process, can not have the ammonia to volatilize in the air.
2. The heating is efficient and uniform, and the heating amount of the heating part is convenient to adjust;
3. the automatic control system has high automation degree, and can automatically control the injection amount and the supply amount of the urea solution in the storage tank and the water replenishing amount and the water discharging amount of the water tank according to the current liquid level and the current temperature of the urea solution.
The urea solution storage system provided by the utility model is described in detail above. The principles and embodiments of the present invention have been explained herein using specific examples, and the above descriptions of the embodiments are only used to help understand the method and its core ideas of the present invention. It should be noted that, for those skilled in the art, without departing from the principle of the present invention, the present invention can be further modified and modified, and such modifications and modifications also fall within the protection scope of the appended claims.
Claims (10)
1. A urea solution storage system comprising a tank (1) for storing a urea solution, characterized by further comprising a water tank (2) for storing water; the water tank (2) is communicated with water supplementing equipment through a water supplementing pipeline (21) and is also communicated with the storage tank (1) through an air inlet pipeline (22), so that ammonia volatilized from the storage tank (1) can enter the water tank (2) through the air inlet pipeline (22), and is also communicated with the storage tank (1) through a water drainage pipeline (23), so that water dissolved with the ammonia in the water tank (2) can be discharged into the storage tank (1) through the water drainage pipeline (23).
2. A urea solution storage system according to claim 1, characterized in that said water tank (2) is internally provided with baffles (3), said number of baffles (3) is one or more, when a plurality of said baffles (3) are provided, each of said baffles (3) is arranged in sequence from bottom to top at intervals.
3. The urea solution storage system according to claim 2, wherein the water replenishing pipeline (21) is provided with a water replenishing valve (211), the water draining pipeline (23) is provided with a water draining valve (231), the storage tank (1) is communicated with a liquid filling device through a liquid inlet pipeline (11) and is also communicated with a liquid using device through a liquid supply pipeline (12), and the liquid inlet pipeline (11) and the liquid supply pipeline (12) are respectively provided with a liquid inlet valve (111) and a liquid supply valve (121); urea solution storage system still includes and is used for detecting liquid level detection part (5) and the first the control unit of storage tank (1) liquid level, first the control unit can be according to the testing result automatically regulated of liquid level detection part (5) make up water valve (211) drain valve (231) feed liquor valve (111) with the aperture of confession liquid valve (121).
4. A urea solution storage system according to claim 3, characterized in that the first control unit presets the following control program: and keeping the water supplementing valve (211) open during the period that the liquid inlet valve (111) is opened and the liquid level in the storage tank (1) does not reach the preset liquid level upper limit value.
5. The urea solution storage system according to claim 4, characterized in that the first control unit also presets the following control program: and keeping the drainage valve (231) open during the period that the liquid supply valve (121) is opened and the liquid level in the storage tank (1) is not up to the preset liquid level upper limit value.
6. A urea solution storage system according to claim 3, characterized in that said inlet line (22) is connected between the top of the tank (1) and the bottom of the tank (2), that the outlet of the make-up line (21) is connected to the top of the tank (2), and that the outlet of the drain line (23) and the outlet of the inlet line (11) both extend to the bottom of the tank (1).
7. The urea solution storage system according to claim 1, wherein the water replenishing device is a device capable of supplying demineralized water.
8. A urea solution storage system according to any one of claims 1-7, characterized in that it further comprises a heating means (4), said heating means (4) being arranged inside said tank (1), said heating means (4) heating the urea solution inside said tank (1) with steam.
9. A urea solution storage system according to claim 8, characterized in that said heating means (4) are arranged in the bottom middle area of the tank (1).
10. A urea solution storage system according to claim 8, characterized in that said heating means (4) is in communication with a steam generation device through a steam injection line (41), said steam injection line (41) being provided with a steam regulating valve (411), said urea solution storage system further comprising a temperature detection means (6) for detecting the temperature of the urea solution in said tank (1) and a second control unit capable of automatically adjusting the opening of said steam regulating valve (411) according to the detection result of said temperature detection means (6).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020758547.9U CN212448977U (en) | 2020-05-09 | 2020-05-09 | Urea solution storage system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020758547.9U CN212448977U (en) | 2020-05-09 | 2020-05-09 | Urea solution storage system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212448977U true CN212448977U (en) | 2021-02-02 |
Family
ID=74465192
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202020758547.9U Active CN212448977U (en) | 2020-05-09 | 2020-05-09 | Urea solution storage system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212448977U (en) |
-
2020
- 2020-05-09 CN CN202020758547.9U patent/CN212448977U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| JPS5740872A (en) | Device for regulating temperature of fuel cell | |
| CN212448977U (en) | Urea solution storage system | |
| CN109932198B (en) | Circulating water supply system for water purifier testing | |
| CN205372751U (en) | Heat exchange station temperature automatic regulating system | |
| CN203040612U (en) | Continuous-type material soaking-cooking device | |
| CN213421224U (en) | Integrated heating heat exchange station | |
| CN103070132A (en) | Temperature control device in seawater breeding pond water reflow treatment | |
| CN206404756U (en) | A kind of multi-function outer circulation kettle system | |
| CN203120738U (en) | Temperature control device in seawater culture pond water backflow processing | |
| CN202898063U (en) | Continuous biological waste liquor inactivation system | |
| CN103040070A (en) | Continuous material digesting device | |
| CN205282105U (en) | Reactor coolant ization appearance control system | |
| CN209917896U (en) | Reation kettle is used in water treatment agent production | |
| CN204151122U (en) | Washing kettle heating system | |
| CN209312894U (en) | Lithium battery diaphragm solidification washing liquid-supplying system | |
| CN208282416U (en) | A kind of thermostatic control system in outdoor hot spring bubble pond | |
| CN217585052U (en) | Exempt from to stir transfer cooling cauldron | |
| CN218320832U (en) | Recirculated cooling water saving system | |
| CN212734515U (en) | Spark machine equipment concentrates oil feeding system | |
| CN217110023U (en) | Electric heating device for standby urea solution storage system | |
| CN216708316U (en) | Cooling water circulating device in vacuum sizing box | |
| CN218001479U (en) | Constant temperature water supply device for boiler | |
| CN214275934U (en) | Intelligent control device for energy-saving heat supply system of thermal power plant | |
| CN220541365U (en) | High-flow hot water system | |
| CN217612911U (en) | Reduce reboiler coking heat sink of esterifying |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |