Unlock instant, AI-driven research and patent intelligence for your innovation.

Device and method for controlling cooling temperature of high-temperature flue pipe of disc drying equipment

A technology of temperature control device and high-temperature flue gas, which is applied in the direction of drying gas arrangement, lighting and heating equipment, drying, etc., which can solve the problems of increased difficulty in equipment maintenance, shortened equipment maintenance cycle, and uneven operator control level , to achieve the effect of reducing post operators and their workload, improving output and product quality, and achieving considerable economic and social benefits

Active Publication Date: 2015-02-25
HEBEI IRON AND STEEL
View PDF6 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Since the high-temperature flue gas comes from the rotary kiln, the flue gas temperature of the rotary kiln fluctuates greatly due to the influence of output and kiln conditions. The temperature control of the high-temperature flue gas pipeline of the pan drying equipment is a pure lag, large inertia, and multi-coupling object, and the temperature cannot be realized. Fully automatic control, the system only realizes the data collection function, and the control process is only manual control. Therefore, in the entire cooling operation process, the control basically relies on the operator's experience and manual operation. Due to the uneven control level of the operator, the production process The unstable control temperature parameters have a great impact on the safe and stable operation of the equipment and the quality of temperature-sensitive vanadium products. Maintenance cycle is shortened, affecting production
Production must be stopped for maintenance, and due to the narrow space, equipment maintenance becomes more difficult and maintenance costs increase

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Device and method for controlling cooling temperature of high-temperature flue pipe of disc drying equipment
  • Device and method for controlling cooling temperature of high-temperature flue pipe of disc drying equipment
  • Device and method for controlling cooling temperature of high-temperature flue pipe of disc drying equipment

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0075] The value of the temperature detection element 9 of the high-temperature flue gas pipeline is controlled at 200°C, and the control accuracy is controlled at ±5°C. The parameters of the cold temperature control model are determined as follows:

[0076] temperature set point T SP =200°C, control precision ε=5°C, temperature setting value deviation| |=| T EP (m)-T SP |=| T EP (m)- When 200°C|<5°C, the cooling air duct control device 11 on the cooling site does not need to be adjusted;

[0077] when = T EP (m)-200°C>6°C, that is, the value of the temperature detection element 9 (after processing) is greater than 206°C and When it is a positive value (the slope of the temperature curve is greater than 0, the temperature has a rising trend), the valve position increment is 2%, that is, the cooling air duct control device 11 on the cooling site increases the opening value by a value of 2% per minute. degree, until the numerical value (after processing) of t...

Embodiment 2

[0082] The value of the temperature detection element 9 of the high-temperature flue gas pipeline is controlled at 150°C, and the control accuracy is controlled at ±2°C. The parameters of the cold temperature control model are determined as follows:

[0083] temperature set point T SP =150°C, control accuracy ε=2°C, temperature setting value deviation| |=| T EP (m)-T SP |=| T EP (m)- When 150°C|<2°C, the cooling air duct control device 11 on the cooling site does not operate, that is, the temperature does not need to be adjusted;

[0084] when = T EP (m)- 150°C>3°C, that is, the value of the temperature detection element 9 (after processing) is greater than 153°C and When it is a positive value (the slope of the temperature curve is greater than 0, the temperature has a rising trend), the valve position increment is 1.5%, that is, the cooling air duct control device 11 on the cooling site increases the opening value by a value of 1.5% per minute. degree, un...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention discloses a device and method for controlling the cooling temperature of a high-temperature flue pipe of disc drying equipment, and belongs to the technical field of vanadium production equipment and method. The device and method are used for automatically controlling the cooling temperature of a high-temperature flue pipe of disc drying equipment during vanadium finished product process. The technical scheme of the invention is as follows: a high-temperature induced draft fan is mounted at the front end of the disc drying equipment, a cooling air pipe is connected with a high-temperature flue pipe at the exit of a rotary kiln, a high-temperature flue pipe controller and a temperature detecting element are mounted on the high-temperature flue pipe, a cooling air pipe controller is mounted on the cooling air pipe, a temperature signal is transmitted to an on-site control station, the on-site control station outputs a valve position signal, and the amount of cooling air supply is controlled by the high-temperature flue pipe controller and the cooling air pipe controller. The device and method can achieve the purpose of automatically controlling the cooling temperature of the high-temperature flue pipe of the disc drying equipment, avoid the potential safety hazards caused by oxidation loss of metals on the pipe wall, increase the work efficiency of the disc drying equipment, save the energy, protect the environment, reduce the energy consumption, and bring considerable economic and social benefits.

Description

technical field [0001] The invention relates to an automatic control device and a control method for the temperature of the high-temperature flue gas pipeline of the pan drying equipment in the production process of vanadium products and a control method, and belongs to the technical field of vanadium production equipment and methods. Background technique [0002] In the production process of vanadium products, the wet ammonium polyvanadate is transported by belt and other transmission equipment into the pan drying equipment for drying, and the dried ammonium polyvanadate powder is sent to the rotary kiln for oxidation and roasting to form vanadium pentoxide or vanadium trioxide finished products , and then sent to the melting equipment for melting tablet production. [0003] In the production process of vanadium products mentioned above, in order to save energy and reduce emissions, the high-temperature flue gas generated by the rotary kiln is led back to the pan drying equ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F26B21/10F26B21/14F27D17/00
Inventor 金树成魏金辉姜海罡
Owner HEBEI IRON AND STEEL