CN213738630U - Urea system waste heat recovery device that hydrolysises - Google Patents
Urea system waste heat recovery device that hydrolysises Download PDFInfo
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- CN213738630U CN213738630U CN202022860628.2U CN202022860628U CN213738630U CN 213738630 U CN213738630 U CN 213738630U CN 202022860628 U CN202022860628 U CN 202022860628U CN 213738630 U CN213738630 U CN 213738630U
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P20/00—Technologies relating to chemical industry
- Y02P20/10—Process efficiency
- Y02P20/129—Energy recovery, e.g. by cogeneration, H2recovery or pressure recovery turbines
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Abstract
The utility model provides a urea system waste heat recovery device that hydrolysises, includes urea hydrolysising ware, inlet channel, heat exchanger, outlet conduit and the drain box that communicates in order, the heat exchanger is built-in the urea storage tank and irritates interior urea and carries out the heat exchange, be equipped with electric valve, flowmeter and manual shutoff door in order according to the liquid flow direction on the inlet channel, the last check valve that is equipped with of outlet conduit, be equipped with the temperature-detecting device who is used for detecting the tank internal temperature on the urea storage tank. The utility model discloses make full use of heat source reduces hydrophobic emission, has improved resource utilization, has reduced energy loss, reduces hydrophobic emission, has fine popularization and practical value, can produce good economic benefits after extensive popularization and application.
Description
Technical Field
The utility model relates to a coal-fired thermal power technical field specifically locates a urea system waste heat recovery device that hydrolysises.
Background
The urea storage tank is a common device of a denitration system, and is used for storing prepared urea solution for a urea hydrolyzer or a urea pyrolysis device. The urea tank is kept at a temperature above 40 c to ensure that the urea solution stored therein does not crystallize. Therefore, a heat source is needed to input heat to the equipment so as to balance the heat dissipation of the equipment. At present, heat sources for heating a urea storage tank are auxiliary steam of a power plant, steam parameters are about 1MPa, the temperature is about 300 ℃, and the steam is high-quality superheated steam and is a high-quality heat source. The auxiliary steam heating of the power plant can cause the loss of a high-quality heat source, reduce the overall economic benefit of the power plant, and simultaneously generate partial hydrophobic water to increase the subsequent water treatment load. On the other hand, the heated steam of the urea hydrolyzer is drained without reutilization, and the heated steam is directly returned to a drain tank for collection, so that the drainage quantity is large, and the drainage utilization rate is low.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a urea system waste heat recovery device that hydrolysises, the easy technical problem that is lost of high-quality heat source in the urea storage tank that will solve prior art.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the utility model provides a urea system waste heat recovery device that hydrolysises which characterized in that: including urea hydrolysising ware, inlet channel, heat exchanger, outlet conduit and the drain box that communicates in order, the heat exchanger is built-in to carry out the heat exchange with jar interior urea in the urea storage tank, be equipped with electric valve, flowmeter and manual turn-off door in order according to the liquid flow direction on the inlet channel, the last check valve that is equipped with of outlet conduit, be equipped with the temperature-detecting device who is used for detecting jar interior temperature on the urea storage tank.
Further preferably, a connection pipeline is arranged between the water inlet pipeline and the water outlet pipeline, and two ends of the connection pipeline are respectively communicated with the water inlet pipeline between the urea hydrolyzer and the electric valve and the water outlet pipeline between the check valve and the drain tank.
Further, the heat exchanger is made of stainless steel with the material of 316L.
Furthermore, the water inlet pipeline, the interface with the heat exchanger, and the interface of the water outlet pipeline and the heat exchanger are all positioned outside the urea storage tank.
In addition, the water inlet pipeline and the water outlet pipeline are both made of carbon steel.
More preferably, the water inlet pipeline between the urea hydrolyzer and the electric valve is provided with a wastewater treatment pipeline, the wastewater treatment pipeline is communicated with a wastewater treatment pool, and the wastewater treatment pipeline is provided with a manual shutoff valve.
Compared with the prior art the utility model has the following characteristics and beneficial effect:
retrieve urea system of hydrolysising including urea hydrolysising ware, urea storage tank and drain box, set up the heat exchanger on the urea storage tank, heat exchanger inlet pipe connects the urea hydrolysising ware, and outlet pipe goes to the drain box to the hydrophobic of heating steam in the effective urea hydrolysising ware of utilizing realizes the energy ladder utilization to the high-quality heat source, compares in prior art and adopts the power plant to assist and evaporate and give the urea storage tank heating, the utility model discloses make full use of heat source reduces hydrophobic emission, has improved resource utilization, has reduced energy loss, reduces hydrophobic emission, has fine popularization and practical value, can produce good economic benefits after extensive popularization and application.
Drawings
Fig. 1 is the structure schematic diagram of the waste heat recovery device of the urea hydrolysis system of the present invention.
Reference numerals: 1-urea hydrolyzer; 2-a water inlet pipeline; 3-a heat exchanger; 4-a water outlet pipeline; 5-a drain tank; 6-urea storage tank; 7-an electric valve; 8-a flow meter; 9-manual shut-off gate; 10-a communication pipe; 11-temperature detection means; 12-a check valve; 13-a wastewater treatment pipeline; 14-wastewater treatment tank.
Detailed Description
In order to make the technical means, innovative features, objectives and functions realized by the present invention easy to understand, the present invention will be further described below.
The embodiments described herein are specific embodiments of the present invention, and are intended to be illustrative of the concepts of the present invention, which are intended to be illustrative and exemplary, and should not be construed as limiting the scope of the embodiments of the present invention. In addition to the embodiments described herein, those skilled in the art will be able to employ other technical solutions which are obvious based on the disclosure of the claims and the specification of the present application, and these technical solutions include technical solutions which make any obvious replacement or modification for the embodiments described herein.
A waste heat recovery device of a urea hydrolysis system comprises a urea hydrolyzer 1, a water inlet pipeline 2, a heat exchanger 3, a water outlet pipeline 4 and a drain tank 5 which are sequentially communicated, wherein the heat exchanger 3 is arranged in a urea storage tank 6 to exchange heat with urea in the tank, an electric valve 7, a flow meter 8 and a manual shutoff valve 9 are sequentially arranged on the water inlet pipeline 2 according to the flow direction of liquid, a check valve 12 is arranged on the water outlet pipeline 4, a temperature detection device 11 for detecting the temperature in the tank is arranged on the urea storage tank 6, a connection pipeline 10 is arranged between the water inlet pipeline 2 and the water outlet pipeline 4, two ends of the connection pipeline 10 are respectively communicated with the water inlet pipeline 2 between the urea hydrolyzer 1 and the electric valve 7, the water outlet pipeline 4 between the check valve 12 and the drain tank 5, the heat exchanger 3 is made of 316L stainless steel, and the water inlet pipeline 2 and a connector of the heat exchanger 3, The water outlet pipeline 4 and the heat exchanger 3 are connected at the outer side of the urea storage tank 6, the water inlet pipeline 2 and the water outlet pipeline 4 are both made of carbon steel, a wastewater treatment pipeline 13 is arranged on the water inlet pipeline 2 between the urea hydrolyzer 1 and the electric valve 7, the wastewater treatment pipeline 13 is communicated with a wastewater treatment tank 14, and a manual shutoff door 9 is arranged on the wastewater treatment pipeline 13.
The utility model discloses effectively integrate urea hydrolysising ware 1, urea storage tank 6 and drain box 5, utilize the urea solution of the hydrophobic heating urea storage tank 6 of steam of urea hydrolysising ware 1, produce ammonia product gas and supply power plant denitrification facility and use. The utility model discloses in, the used steam heat source of urea hydrolyser 1 requires 1.0MPa, and the temperature is 300 ℃, and the steam quantity is about 1.1t/h, and the hydrophobic pressure that produces after the steam heat utilizes is 0.6 ~ 0.9MPa, and the temperature is 85 ~ 120 ℃. The heat of partial hydrophobic water can completely meet the requirement of heat preservation of the solution in the urea storage tank 6, and meanwhile, partial medium remains, and redundant hydrophobic water returns to the hydrophobic tank 5 for collection. A heat exchanger 4 is arranged in a urea storage tank 6, an inlet pipeline interface and an outlet pipeline interface of the heat exchanger 4 are positioned outside the urea storage tank 6, an inlet pipeline BR01 (a water inlet pipeline 2) is connected with a urea hydrolyzer 1, an outlet pipeline BR02 (a water outlet pipeline 4) is connected with a drain tank 5, and the interfaces are connected with the pipelines through flanges. The heat exchanger 4 is arranged in the urea storage tank 6, so that the heat exchange efficiency is high; the heat exchanger 4 is made of 316L, is waterproof and is acid-base corrosion-resistant, the inlet pipeline BR01 (the water inlet pipeline 2) and the outlet pipeline BR02 (the water outlet pipeline 4) are not in contact with the urea solution, the requirement on corrosion resistance of the pipelines is not needed, and the pipelines are made of carbon steel. The urea storage tank 6 is provided with a temperature detection device 11 which can return the temperature of the urea solution in the urea storage tank in real time, and steam drainage is adjusted to enter the urea storage tank in real time according to the temperature. A flowmeter 8 is arranged on the inlet pipeline BR01 (the water inlet pipeline 2), and can display flow data of steam drainage in the inlet pipeline in real time; still be equipped with electric valve 7, manual shutoff door 9, according to flowmeter 8 and temperature-detecting device 11's data, carry out chain switch and regulation to electric valve 7 to guarantee that the system operation is reliable, guarantee that the temperature of urea solution is in reasonable range. The outlet pipeline BR02 (outlet pipeline 4) is provided with a check valve 12, which can prevent the drained water from flowing back into the heat exchanger 4 from the outlet pipeline, and ensure the steam drained water to heat the urea solution smoothly. In addition, a connection pipeline BR03 is additionally arranged between the urea hydrolyzer 1 and the drain tank 5, a manual shutoff door 9 is arranged on the pipeline, and the function of the connection pipeline BR03 is that when the urea storage tank 6 is in a non-use state or the temperature of the urea storage tank is too high and heat tracing is not needed, the electric valve 7 of the inlet pipeline is closed, the inlet pipeline BR01 (water inlet pipeline 2) is closed, the connection pipeline BR03 is opened, and steam in the urea hydrolyzer 1 is drained into the drain tank 5 directly through the connection pipeline, so that the normal operation of the urea hydrolyzer 1 is ensured.
The basic principles and the main features of the invention and the advantages of the invention have been shown and described above, it will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, but that the invention may be embodied in other specific forms without departing from the spirit or essential characteristics of the invention. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.
Claims (1)
1. The utility model provides a urea system waste heat recovery device that hydrolysises which characterized in that: the device comprises a urea hydrolyzer (1), a water inlet pipeline (2), a heat exchanger (3), a water outlet pipeline (4) and a drain tank (5) which are sequentially communicated, wherein the heat exchanger (3) is arranged in a urea storage tank (6) to exchange heat with urea in the tank, an electric valve (7), a flowmeter (8) and a manual shutoff valve (9) are sequentially arranged on the water inlet pipeline (2) according to the flow direction of liquid, a check valve (12) is arranged on the water outlet pipeline (4), and a temperature detection device (11) for detecting the temperature in the tank is arranged on the urea storage tank (6); a connecting pipeline (10) is arranged between the water inlet pipeline (2) and the water outlet pipeline (4), and two ends of the connecting pipeline (10) are respectively communicated with the water inlet pipeline (2) between the urea hydrolyzer (1) and the electric valve (7), the water outlet pipeline (4) between the check valve (12) and the drain tank (5); the heat exchanger (3) is made of 316L stainless steel; the water inlet pipeline (2), the interface with the heat exchanger (3) and the interface of the water outlet pipeline (4) and the heat exchanger (3) are positioned at the outer side of the urea storage tank (6); the water inlet pipeline (2) and the water outlet pipeline (4) are both made of carbon steel; the urea hydrolyzer (1) is equipped with waste water treatment pipeline (13) with inlet channel (2) between electric valve (7), waste water treatment pipeline (13) and waste water treatment pond (14) intercommunication are equipped with manual shutoff door (9) on waste water treatment pipeline (13).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860628.2U CN213738630U (en) | 2020-12-02 | 2020-12-02 | Urea system waste heat recovery device that hydrolysises |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022860628.2U CN213738630U (en) | 2020-12-02 | 2020-12-02 | Urea system waste heat recovery device that hydrolysises |
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| CN213738630U true CN213738630U (en) | 2021-07-20 |
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| CN202022860628.2U Active CN213738630U (en) | 2020-12-02 | 2020-12-02 | Urea system waste heat recovery device that hydrolysises |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856766A (en) * | 2022-04-21 | 2022-08-05 | 国能龙源环保南京有限公司 | Urea solution storage and transportation system and method used in combination with photovoltaic power generation |
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2020
- 2020-12-02 CN CN202022860628.2U patent/CN213738630U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114856766A (en) * | 2022-04-21 | 2022-08-05 | 国能龙源环保南京有限公司 | Urea solution storage and transportation system and method used in combination with photovoltaic power generation |
| CN114856766B (en) * | 2022-04-21 | 2023-04-25 | 国能龙源环保南京有限公司 | Urea solution storage and transportation system and method for combined photovoltaic power generation |
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Effective date of registration: 20211202 Address after: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee after: Guoneng Longyuan environmental protection Co.,Ltd. Patentee after: Guoneng Longyuan environmental protection Taizhou Co., Ltd Address before: 100039 room 901, 9 / F, building 1, yard 16, West Fourth Ring Middle Road, Haidian District, Beijing Patentee before: Guoneng Longyuan environmental protection Co.,Ltd. |