CN110864275A - Flue gas waste heat utilization system - Google Patents
Flue gas waste heat utilization system Download PDFInfo
- Publication number
- CN110864275A CN110864275A CN201911238967.2A CN201911238967A CN110864275A CN 110864275 A CN110864275 A CN 110864275A CN 201911238967 A CN201911238967 A CN 201911238967A CN 110864275 A CN110864275 A CN 110864275A
- Authority
- CN
- China
- Prior art keywords
- flue gas
- superheater
- gas channel
- evaporator
- waste 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
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22G—SUPERHEATING OF STEAM
- F22G3/00—Steam superheaters characterised by constructional features; Details of component parts thereof
- F22G3/009—Connecting or sealing of superheater or reheater tubes with collectors or distributors
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22B—METHODS OF STEAM GENERATION; STEAM BOILERS
- F22B1/00—Methods of steam generation characterised by form of heating method
- F22B1/02—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers
- F22B1/18—Methods of steam generation characterised by form of heating method by exploitation of the heat content of hot heat carriers the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F22—STEAM GENERATION
- F22D—PREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER FOR STEAM GENERATION; FEED-WATER SUPPLY FOR STEAM GENERATION; CONTROLLING WATER LEVEL FOR STEAM GENERATION; AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN STEAM BOILERS
- F22D1/00—Feed-water heaters, i.e. economisers or like preheaters
- F22D1/24—Feed-water heaters, i.e. economisers or like preheaters with fire tubes or flue ways traversing feed-water vessels
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F23—COMBUSTION APPARATUS; COMBUSTION PROCESSES
- F23J—REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES
- F23J15/00—Arrangements of devices for treating smoke or fumes
- F23J15/06—Arrangements of devices for treating smoke or fumes of coolers
-
- 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
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E20/00—Combustion technologies with mitigation potential
- Y02E20/30—Technologies for a more efficient combustion or heat usage
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Life Sciences & Earth Sciences (AREA)
- Sustainable Development (AREA)
- Sustainable Energy (AREA)
- Control Of Steam Boilers And Waste-Gas Boilers (AREA)
- Chimneys And Flues (AREA)
Abstract
The invention provides a flue gas waste heat utilization system, which can simultaneously enable two kinds of different waste heat flue gas to respectively heat superheated steam with two parameters, and can meet diversified production requirements. The high-temperature flue gas enters the flue gas channel from a flue gas inlet, sequentially scours a superheater, an evaporator and an economizer and then is discharged from a flue gas outlet; the water outlet of the economizer is connected with a steam pocket through a pipeline, the steam pocket is connected with the evaporator through a down pipe and an up pipe to form a circulation loop, and the steam pocket is connected with the superheater through an upper steam pipeline. The device also comprises a flue gas mixing chamber, wherein the output end of the flue gas mixing chamber is connected with an evaporator, a flue gas channel positioned at the input end of the flue gas mixing chamber is divided into a first flue gas channel and a second flue gas channel, and a first superheater and a second superheater are respectively arranged in the first flue gas channel and the second flue gas channel; the steam pocket is respectively connected with the first superheater and the second superheater through an upper steam pipeline.
Description
Technical Field
The invention relates to the technical field of waste heat utilization systems, in particular to a flue gas waste heat utilization system.
Background
Large petrochemical and chemical enterprises usually have a plurality of parallel and concurrent product production lines, and parameters such as temperature, pressure and the like of superheated steam required in the production of each target product are different; meanwhile, parameters such as the amount of flue gas discharged by the energy tail gas of each product production line, the temperature and the like are also different. However, the existing flue gas waste heat utilization system can only treat flue gas for one product production line and provide superheated steam with one parameter.
Disclosure of Invention
The invention provides a flue gas waste heat utilization system, aiming at the defects that the existing flue gas waste heat utilization system can only process flue gas generated by a product production line and provide superheated steam with one parameter.
The invention provides the following technical scheme:
a flue gas waste heat utilization system comprises a flue gas channel and a steam pocket, wherein a superheater, an evaporator and an economizer are sequentially arranged in the flue gas channel along the flow direction of flue gas, high-temperature flue gas enters the flue gas channel from a flue gas inlet, and is sequentially flushed away from the superheater, the evaporator and the economizer and then discharged from a flue gas outlet; the water outlet of the economizer is connected with the steam pocket through a pipeline, the steam pocket is connected with the evaporator through a downcomer and an ascending pipe to form a circulation loop, and the steam pocket is connected with the superheater through an upper steam pipeline; the method is characterized in that: the flue gas mixing device also comprises a flue gas mixing chamber, wherein the output end of the flue gas mixing chamber is connected with the evaporator, the flue gas channel positioned at the input end of the flue gas mixing chamber is divided into a first flue gas channel and a second flue gas channel, and a first superheater and a second superheater are respectively arranged in the first flue gas channel and the second flue gas channel; the steam drum is respectively connected with the first superheater and the second superheater through the upper steam pipeline.
It is further characterized in that:
the first flue gas channel and the second flue gas channel are water-cooled walls;
the evaporator is a high-temperature evaporator and a low-temperature evaporator in sequence along the flowing direction of the flue gas;
the coal economizer comprises a high-temperature coal economizer and a low-temperature coal economizer in sequence along the flowing direction of flue gas;
compared with the prior art, the invention has the following beneficial effects:
the flue gas channel of the input section is divided into two parts, and the first superheater and the second superheater are respectively arranged in the first flue gas channel and the second flue gas channel, so that two different kinds of waste heat flue gas can be treated at the same time, the two different kinds of waste heat flue gas can be used for respectively heating superheated steam with two parameters at the same time, and diversified production requirements can be met;
the first flue gas channel and the second flue gas channel are water-cooled walls, so that high-temperature flue gas is further cooled, and diversified production requirements are further met.
Drawings
FIG. 1 is an overall schematic view of the present invention;
in the figure: 1, a flue gas channel; 11 a first flue gas channel; 12 a second flue gas channel; 2, a flue gas inlet; 3, a superheater; 31 a first superheater; 32 a second superheater; 4 a flue gas mixing chamber; 5, an evaporator; 51 high temperature evaporator; a 52 low temperature evaporator; 6, a coal economizer; 61 high-temperature coal economizer; 62 low-temperature coal economizer; 7, a flue gas outlet; 8, a steam drum; 81 a down pipe; 82 a riser pipe; 83 upper steam line.
Detailed Description
The technical solutions of the present invention will be described clearly and completely with reference to the accompanying drawings, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1, a flue gas waste heat utilization system comprises a flue gas channel 1 and a steam drum 8, wherein a superheater 3, an evaporator 5 and an economizer 6 are sequentially arranged in the flue gas channel 1 along the flow direction of flue gas, high-temperature flue gas enters the flue gas channel 1 from a flue gas inlet 2, sequentially washes the superheater 3, the evaporator 5 and the economizer 6 and then is discharged from a flue gas outlet 7; the water outlet of the economizer 6 is connected with the steam drum 8 through a pipeline, the steam drum 8 is connected with the evaporator 5 through a downcomer 81 and an upcomer 82 to form a circulation loop, and the steam drum 8 is connected with the superheater 3 through an upper steam pipeline 83. The flue gas mixing device further comprises a flue gas mixing chamber 4, the output end of the flue gas mixing chamber 4 is connected with an evaporator 5, a flue gas channel 1 positioned at the input end of the flue gas mixing chamber 4 is divided into a first flue gas channel 11 and a second flue gas channel 12, and a first superheater 31 and a second superheater 32 are respectively arranged in the first flue gas channel 11 and the second flue gas channel 12; the steam drum 8 is connected to the first superheater 31 and the second superheater 32 via an upper steam line 83, respectively. According to the invention, the flue gas channel 1 of the input section is divided into two parts, the first superheater 31 and the second superheater 32 are respectively arranged in the first flue gas channel 11 and the second flue gas channel 12, two different kinds of waste heat flue gas can be simultaneously treated, two different kinds of waste heat flue gas can be simultaneously and respectively heated to overheat steam with two parameters, and diversified production requirements can be met.
The first flue gas channel and the second flue gas channel 12 are water-cooled walls, so that high-temperature flue gas is further cooled, and diversified production requirements are further met. The evaporator 5 is a high-temperature evaporator 51 and a low-temperature evaporator 52 in sequence along the flow direction of flue gas, and the economizer 6 is a high-temperature economizer 61 and a low-temperature economizer 62 in sequence along the flow direction of flue gas.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (4)
1. A flue gas waste heat utilization system comprises a flue gas channel and a steam pocket, wherein a superheater, an evaporator and an economizer are sequentially arranged in the flue gas channel along the flow direction of flue gas, high-temperature flue gas enters the flue gas channel from a flue gas inlet, and is sequentially flushed away from the superheater, the evaporator and the economizer and then discharged from a flue gas outlet; the water outlet of the economizer is connected with the steam pocket through a pipeline, the steam pocket is connected with the evaporator through a downcomer and an ascending pipe to form a circulation loop, and the steam pocket is connected with the superheater through an upper steam pipeline; the method is characterized in that: the flue gas mixing device also comprises a flue gas mixing chamber, wherein the output end of the flue gas mixing chamber is connected with the evaporator, the flue gas channel positioned at the input end of the flue gas mixing chamber is divided into a first flue gas channel and a second flue gas channel, and a first superheater and a second superheater are respectively arranged in the first flue gas channel and the second flue gas channel; the steam drum is respectively connected with the first superheater and the second superheater through the upper steam pipeline.
2. The flue gas waste heat utilization system of claim 1, characterized in that: the first flue gas channel and the second flue gas channel are water-cooled walls.
3. The flue gas waste heat utilization system of claim 1, characterized in that: the evaporator is a high-temperature evaporator and a low-temperature evaporator in sequence along the flowing direction of the flue gas.
4. The flue gas waste heat utilization system of claim 1, characterized in that: the coal economizer is a high-temperature coal economizer and a low-temperature coal economizer in sequence along the flowing direction of the flue gas.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238967.2A CN110864275A (en) | 2019-12-06 | 2019-12-06 | Flue gas waste heat utilization system |
| PCT/CN2020/133283 WO2021110020A1 (en) | 2019-12-06 | 2020-12-02 | Flue gas waste heat utilization system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201911238967.2A CN110864275A (en) | 2019-12-06 | 2019-12-06 | Flue gas waste heat utilization system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN110864275A true CN110864275A (en) | 2020-03-06 |
Family
ID=69658664
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201911238967.2A Pending CN110864275A (en) | 2019-12-06 | 2019-12-06 | Flue gas waste heat utilization system |
Country Status (2)
| Country | Link |
|---|---|
| CN (1) | CN110864275A (en) |
| WO (1) | WO2021110020A1 (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111486437A (en) * | 2020-04-30 | 2020-08-04 | 张满凤 | Boiler waste heat recycling system based on flue gas waste heat recovery boiler economizer |
| CN112082147A (en) * | 2020-09-17 | 2020-12-15 | 东方菱日锅炉有限公司 | Low-pressure superheater system of waste heat boiler |
| WO2021110020A1 (en) * | 2019-12-06 | 2021-06-10 | 江苏太湖锅炉股份有限公司 | Flue gas waste heat utilization system |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4191690B2 (en) * | 2005-03-04 | 2008-12-03 | 三菱重工業株式会社 | Reheat steam temperature control method, control device, and boiler plant using the same |
| CN202032544U (en) * | 2011-04-11 | 2011-11-09 | 中国华能集团清洁能源技术研究院有限公司 | Invert pulverized-coal fired boiler arrangement structure for ultrahigh steam temperature steam parameter |
| CN102537937A (en) * | 2012-02-26 | 2012-07-04 | 哈尔滨锅炉厂有限责任公司 | Device for adjusting temperature of reheated steam of boiler by aid of three tail-flues |
| CN205717146U (en) * | 2016-04-25 | 2016-11-23 | 杭州海陆重工有限公司 | A kind of ultrahigh pressure coal gas boiler |
| CN108592008B (en) * | 2018-05-23 | 2023-05-02 | 清华大学 | Secondary reheating power generation system and operation method thereof |
| CN211650198U (en) * | 2019-12-06 | 2020-10-09 | 江苏太湖锅炉股份有限公司 | Flue gas waste heat utilization system |
| CN110864275A (en) * | 2019-12-06 | 2020-03-06 | 江苏太湖锅炉股份有限公司 | Flue gas waste heat utilization system |
-
2019
- 2019-12-06 CN CN201911238967.2A patent/CN110864275A/en active Pending
-
2020
- 2020-12-02 WO PCT/CN2020/133283 patent/WO2021110020A1/en active Application Filing
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2021110020A1 (en) * | 2019-12-06 | 2021-06-10 | 江苏太湖锅炉股份有限公司 | Flue gas waste heat utilization system |
| CN111486437A (en) * | 2020-04-30 | 2020-08-04 | 张满凤 | Boiler waste heat recycling system based on flue gas waste heat recovery boiler economizer |
| CN112082147A (en) * | 2020-09-17 | 2020-12-15 | 东方菱日锅炉有限公司 | Low-pressure superheater system of waste heat boiler |
Also Published As
| Publication number | Publication date |
|---|---|
| WO2021110020A1 (en) | 2021-06-10 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN110864275A (en) | Flue gas waste heat utilization system | |
| JP6303836B2 (en) | Chemical cleaning method for boiler | |
| Deng et al. | Start-Up and dynamic processes simulation of supercritical once-through boiler | |
| CN106321174B (en) | A kind of electricity generation system using high-temperature flue gas waste heat | |
| CN106381155A (en) | Coke oven riser waste heat utilization system | |
| CN104061564B (en) | Across No. 0 high pressure heater system of unit backheat | |
| CN103242865B (en) | Device for generating electricity by utilizing waste heat of raw coke oven gas | |
| CN211650198U (en) | Flue gas waste heat utilization system | |
| CN202693508U (en) | System for testing efficiency of pipeline of thermal power generating unit | |
| CN105089723B (en) | A kind of saturated vapor directly enters the device of turbine expansion generating | |
| CN104089268B (en) | A kind of power type heat pipe waste heat boiler device | |
| CN113154356A (en) | High-temperature steam composite thermodynamic system and utilization method thereof | |
| RU2336456C2 (en) | Method of oil heating in main pipelines | |
| CN104406144A (en) | Double-medium waste heat boiler | |
| CN104785104B (en) | A kind of relatively low remodeling method of inlet flue gas temperature for solving power plant boiler denitrification apparatus | |
| CN104089267B (en) | A kind of power type heat pipe-type exhaust heat recovering method | |
| CN103303876A (en) | Waste-heat recovery method in making acid by using pyrite | |
| CN110699093A (en) | Coke oven riser waste heat recovery steam-water complex loop system and method | |
| CN204005923U (en) | A kind of boiler waste heat recovery system | |
| CN202675253U (en) | Device for utilizing waste heat of smoke of thermal power generating unit boiler | |
| CN106287655B (en) | A kind of steam heat recovery technique | |
| CN109296415B (en) | Combined cycle combined cooling heating power unit steam supply superheat degree utilization system | |
| CN214223075U (en) | Novel desuperheating water system of million tower boiler superheater and reheater | |
| CN102705864A (en) | Method and device for utilizing residual heat of smoke from boiler of fossil power plant | |
| CN204005936U (en) | High-pressure heater system across unit backheat |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination |