Furnace temperature measuring instrument for shell coal gasifier
By installing sensors on different pipelines of the gasifier and combining data processing, the gasifier temperature is measured in real time, which solves the accuracy of gasifier furnace temperature measurement, and achieves the effect of reducing specific coal consumption and production guidance.
Patent Information
- Application Number
- CN202422263684.6
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-15
- Publication Date
- 2025-08-22
- Estimated Expiration
- 2034-09-15
AI Technical Summary
Existing gasifiers cannot measure furnace temperature at high frequency, accurately and effectively, and it is difficult to introduce advanced control technology and real-time optimization technology.
By combining software and hardware, sensors are installed on different pipelines of the gasifier, such as steam flow rate in large areas, steam drum steam pressure, coal powder flow rate, etc., combined with data preprocessing and calculation units, the gasifier temperature is measured in real time, and the results are displayed on the DCS to guide the control system.
Real-time, sensitive and effective measurement of gasifier furnace temperature is achieved, reducing specific coal consumption by more than 1%, and providing feasibility of production guidance and advanced control technology.
Smart Images
Figure CN223255170U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of coal gasifiers, in particular to a Shell coal gasifier temperature measuring instrument. Background Art
[0002] A coal gasifier is the primary equipment used for coal gasification. Various gasification methods are used, depending on the properties of the coal and the specific requirements for the gas. The corresponding gasification equipment includes fixed-bed (moving-bed) gasifiers (such as the UGI and Lurgi gasifiers), fluidized-bed (fluidized-bed) gasifiers (such as the Winkler and Winkler gasifiers), and entrained-bed gasifiers (such as the KT and Texaco gasifiers).
[0003] Due to the high furnace temperature of existing gasifiers, there is no effective means to directly measure the furnace temperature of the gasifier. The furnace temperature is occasionally measured using a temperature gun, or judged through a comprehensive analysis of steam production, synthesis gas component content and slag appearance. It is impossible to measure the furnace temperature frequently, accurately and effectively, and it is also difficult to introduce advanced control technology and real-time optimization technology to the gasifier. Utility Model Content
[0004] The purpose of the utility model is to provide a Shell coal gasification furnace temperature measuring instrument to solve the existing problems.
[0005] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a Shell coal gasifier furnace temperature measuring instrument, comprising a gasifier body and a drum steam tank, the drum steam outlet pipeline on the side of the drum steam tank is respectively provided with a large area steam flow and a drum steam pressure sensor, a steam system pipe is provided on the side of the gasifier body, a pulverized coal conveying system is provided on the side of the gasifier body, a small area steam flow sensor is provided on the side of the gasifier, the gasifier body is located on the side of the drum steam tank, and the gasifier furnace temperature measuring instrument provides a method for measuring the gasifier furnace temperature by combining software and hardware, so as to realize the measurement of the gasifier furnace temperature. Real-time measurement of furnace temperature, sensors are installed in the corresponding pipelines, large-area steam flow and drum steam pressure sensors are installed in the drum steam outlet pipeline; drum feed water flow sensor and drum feed water temperature sensor are installed in the drum feed water inlet pipeline; drum drainage flow sensor and drum drainage temperature sensor are installed in the drum drainage outlet pipeline; small-area steam flow sensor is installed in the steam system pipeline (the actual number of sensors can be more than one); the coal powder flow sensor is installed in the coal powder conveying system (the total coal powder flow in the furnace can also be calculated from multiple coal powder flow signals in the coal powder conveying system). The original signal of the sensor, including large-area The steam flow, drum steam pressure, drum water flow, drum drainage flow, drum water temperature, drum drainage temperature, multiple zone steam flow and inlet coal flow should be sent to the data preprocessing unit and the gasifier temperature calculation unit through the communication unit; the data preprocessing unit performs data preprocessing on the original sensor signal sent by the communication unit and the manually input coal powder information, and gives the result to the gasifier temperature calculation unit; the coal quality information is manually input to the inlet coal powder viscosity-temperature curve calculation unit, and the inlet coal powder viscosity-temperature curve calculation unit calculates the coal powder viscosity-temperature curve coefficient according to the coal quality information and sends it to the gasifier temperature calculation unit; the gasifier temperature The temperature calculation unit calculates the gasifier temperature and other information based on the signals sent by the coal powder viscosity-temperature curve calculation unit, the data preprocessing unit and the communication unit, and sends the results to the communication unit; further, the communication unit can display the gasifier temperature on the DCS and send the gasifier temperature to the control system for guidance and control. After the gasifier temperature measuring instrument is put into use, it breaks the situation where there is a lack of effective measurement of the gasifier temperature in the factory, provides guidance for production, and provides further feasibility for the implementation of advanced control technology and optimization technology. A coal powder flow sensor is provided on the side of the gasifier body.
[0006] As a preferred technical solution of the present invention, the drum water feed inlet pipeline at the bottom of the drum steam tank is respectively provided with a drum water feed flow sensor and a drum water feed temperature sensor.
[0007] As a preferred technical solution of the present invention, a drum drainage flow sensor and a drum drainage temperature sensor are respectively provided on the side of the drum drainage outlet pipeline at the bottom of the drum steam tank.
[0008] As a preferred technical solution of the present invention, the cell steam flow sensor is installed in the steam system pipe.
[0009] As a preferred technical solution of the present invention, the coal powder flow sensor entering the furnace is installed in the coal powder conveying system.
[0010] As a preferred technical solution of this utility model, the flanking elements of the first cell steam flow sensor are equipped with two cell steam flow sensors, one for each cell steam flow sensor. This measuring instrument, combined with advanced control systems and real-time optimization systems, ultimately achieved the goal of reducing specific coal consumption by more than 1%. Analysis of user experience indicates that the measurement results are sufficiently sensitive, timely, effective, and stable to effectively guide production without incurring high measurement costs.
[0011] Compared with the prior art, the beneficial effects of the present invention are:
[0012] The utility model provides a method for measuring the temperature of a gasifier furnace by combining software and hardware through a gasifier furnace temperature measuring instrument, so as to realize real-time measurement of the temperature of the gasifier furnace. Sensors are installed in corresponding pipelines, and large-area steam flow and drum steam pressure sensors are installed in the drum steam outlet pipeline; drum feed water flow sensor and drum feed water temperature sensor are installed in the drum feed water inlet pipeline; drum drainage flow sensor and drum drainage temperature sensor are installed in the drum drainage outlet pipeline; small-area steam flow sensor is installed in the steam system pipeline (the actual number of sensors can be more than one); the in-furnace pulverized coal flow sensor is installed in the pulverized coal conveying system (the total in-furnace pulverized coal flow can also be calculated from multiple pulverized coal flow signals in the pulverized coal conveying system). The original signals of the sensors, including large-area steam flow, drum steam pressure, drum feed water flow, drum drainage flow, drum feed water temperature, drum drainage temperature, multiple small-area steam flows and in-furnace pulverized coal flow, should be sent to the data through the communication unit. Preprocessing unit and gasifier temperature calculation unit; the data preprocessing unit performs data preprocessing on the original sensor signal sent by the communication unit and the manually input coal powder information, and gives the result to the gasifier temperature calculation unit; the coal quality information is manually input into the coal powder viscosity-temperature curve calculation unit, and the coal powder viscosity-temperature curve calculation unit calculates the coal powder viscosity-temperature curve coefficient according to the coal quality information and sends it to the gasifier temperature calculation unit; the gasifier temperature calculation unit calculates the gasifier temperature and some other information according to the signals sent by the coal powder viscosity-temperature curve calculation unit, the data preprocessing unit and the communication unit, and sends the result to the communication unit; further, the communication unit can display the gasifier temperature on the DCS, and can send the gasifier temperature to the control system for guidance and control. After the gasifier temperature measuring instrument is put into use, it breaks the original lack of effective measurement of the gasifier temperature in the factory, provides guidance for production, and provides further feasibility for the implementation of advanced control technology and optimization technology.
[0013] This utility model achieves the goal of reducing specific coal consumption by more than 1% by combining this measuring instrument with an advanced control system and real-time optimization system during use. Analysis of the results shows that the measurement results are sufficiently sensitive, real-time, effective, and stable to effectively guide production without incurring high measurement costs. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is the structural front view of the utility model;
[0015] Figure 2 It is a partial structural diagram of the utility model;
[0016] Figure 3 This is a structural system diagram of the present utility model.
[0017] In the figure: 1. Large zone steam flow; 2. Drum water supply flow sensor; 3. Drum water supply temperature sensor; 4. Drum steam pressure sensor; 5. Drum drainage flow sensor; 6. Drum drainage temperature sensor; 7. Small zone steam flow sensor 1; 8. Small zone steam flow sensor 2; 9. Small zone steam flow sensor 3; 10. Pulverized coal flow sensor for inlet; 11. Gasifier body; 12. Drum steam tank. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] See also Figure 1-3The utility model provides a Shell coal gasifier furnace temperature measuring instrument, including a gasifier body 11 and a drum steam tank 12. The drum steam outlet pipeline on the side of the drum steam tank 12 is respectively provided with a large-area steam flow 1 and a drum steam pressure sensor 4. The side of the gasifier body 11 is provided with a steam system pipe, the side of the gasifier body 11 is provided with a coal powder conveying system, and the side of the gasifier is provided with a small-area steam flow sensor 7. The gasifier body 11 is located on the side of the drum steam tank 12. The gasifier furnace temperature measuring instrument provides a method for measuring the gasifier furnace temperature by combining software and hardware, realizing real-time measurement of the gasifier furnace temperature. , the sensors are installed in the corresponding pipelines, the large area steam flow 1 and the drum steam pressure sensor 4 are installed in the drum steam outlet pipeline; the drum water flow sensor 2 and the drum water temperature sensor 3 are installed in the drum water inlet pipeline; the drum drainage flow sensor 5 and the drum drainage temperature sensor 6 are installed in the drum drainage outlet pipeline; the small area steam flow sensor 7 is installed in the steam system pipeline (the actual number of sensors can be more than one); the coal powder flow sensor 10 is installed in the coal powder conveying system (the total coal powder flow in the furnace can also be calculated from multiple coal powder flow signals in the coal powder conveying system). The original signal of the sensor includes the large area Steam flow 1, drum steam pressure, drum water flow, drum drainage flow, drum water temperature, drum drainage temperature, multiple zone steam flow and inlet coal flow should be sent to the data preprocessing unit and the gasifier temperature calculation unit through the communication unit; the data preprocessing unit performs data preprocessing on the original sensor signal sent by the communication unit and the manually input coal powder information, and gives the result to the gasifier temperature calculation unit; manually input the coal quality information to the inlet coal powder viscosity-temperature curve calculation unit, and the inlet coal powder viscosity-temperature curve calculation unit calculates the coal powder viscosity-temperature curve coefficient according to the coal quality information and sends it to the gasifier temperature calculation unit; the gasifier temperature The temperature calculation unit calculates the gasifier temperature and other information based on the signals sent by the coal powder viscosity-temperature curve calculation unit, the data preprocessing unit and the communication unit, and sends the results to the communication unit; further, the communication unit can display the gasifier temperature on the DCS and send the gasifier temperature to the control system for guidance and control. After the gasifier temperature measuring instrument is put into use, it breaks the situation where there is a lack of effective measurement of the gasifier temperature in the factory, provides guidance for production, and provides further feasibility for the implementation of advanced control technology and optimization technology. A coal powder flow sensor 10 is provided on the side of the gasifier body 11.
[0020] The drum water feed inlet pipeline at the bottom of the drum steam tank 12 is provided with a drum water feed flow sensor 2 and a drum water feed temperature sensor 3 respectively.
[0021] Drum drain flow sensor 5 and drum drain temperature sensor 6 are installed on the sides of the drum drain outlet pipeline at the bottom of drum steam tank 12. A small steam flow sensor 7 is installed in the steam system pipe, and a pulverized coal flow sensor 10 is installed in the pulverized coal conveying system. Small steam flow sensor 7 is flanked by small steam flow sensor 2 8 and small steam flow sensor 3 9. This measuring instrument, combined with advanced control systems and real-time optimization systems, ultimately achieved the goal of reducing specific coal consumption by more than 1%. Based on the results of its use, it is believed that the measurement results are sufficiently sensitive, real-time, effective, and stable to effectively guide production without incurring high measurement costs.
[0022] In specific use, first of all, after the implementation of the gasifier furnace temperature measuring instrument, the problem of not being able to directly measure the gasifier furnace temperature has been improved. The central control room operator can directly view the gasifier furnace temperature on the DCS screen. The measured gasifier furnace temperature can assist process personnel in judging the working conditions and guiding production. It also increases the feasibility of implementing advanced control and optimization technologies. The measurement cycle is once every 10 seconds, and the measurement frequency is sufficient to meet the adjustment requirements of the gasifier controller. The measurement results can be used to implement the optimization model training, and then optimize the furnace temperature to achieve the goal of reducing specific coal consumption. After six months of use, it is believed that the measurement results are sufficiently reliable to guide production in a timely and effective manner. In combination with advanced control systems and real-time optimization systems, it can achieve the goal of reducing costs and increasing efficiency.
[0023] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.
Claims
1. A Shell coal gasifier furnace temperature measuring instrument, comprising a gasifier body (11) and a drum steam tank (12), characterized in that: A large-area steam flow sensor (1) and a drum steam pressure sensor (4) are respectively provided on the side of the drum steam outlet pipeline on the side of the drum steam tank (12), a steam system pipe is provided on the side of the gasifier body (11), a pulverized coal conveying system is provided on the side of the gasifier body (11), a small-area steam flow sensor (7) is provided on the side of the gasifier body (11), the gasifier body (11) is located on the side of the drum steam tank (12), and a pulverized coal flow sensor (10) is provided on the side of the gasifier body (11).
2. The Shell coal gasifier temperature measuring instrument according to claim 1, characterized in that: The drum water supply inlet pipeline at the bottom of the drum steam tank (12) is provided with a drum water supply flow sensor (2) and a drum water supply temperature sensor (3).
3. The Shell coal gasifier temperature measuring instrument according to claim 1, characterized in that: A drum drainage flow sensor (5) and a drum drainage temperature sensor (6) are respectively provided on the side of the drum drainage outlet pipeline at the bottom of the drum steam tank (12).
4. The Shell coal gasifier temperature measuring instrument according to claim 1, characterized in that: The cell steam flow sensor (7) is installed in the steam system pipe.
5. The Shell coal gasifier temperature measuring instrument according to claim 1, characterized in that: The coal powder flow sensor (10) entering the furnace is installed in the coal powder conveying system.
6. The Shell coal gasifier temperature measuring instrument according to claim 1, characterized in that: The side surfaces of the cell steam flow sensor 1 (7) are respectively provided with a cell steam flow sensor 2 (8) and a cell steam flow sensor 3 (9).