Sintering desulfurization and main exhaust fan joint control method
A main exhaust fan and combined control technology, applied in the direction of furnace control devices, lighting and heating equipment, furnaces, etc., can solve the problems of positive pressure of desulfurization tower, fluctuation of negative pressure of desulfurization system, influence on sintering process, etc., to achieve guaranteed negative pressure value , avoid positive pressure, improve the effect of the effect
Active Publication Date: 2017-09-01
BEIJING SHOUGANG AUTOMATION INFORMATION TECH +1
View PDF5 Cites 0 Cited by
- Summary
- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
If the valve of the main exhaust fan is adjusted blindly without considering the actual situation of the flue gas desulfurization system, it may cause the negative pressure of the desulfurization tower to develop in a positive direction, and the desulfurization capacity will decrease. , thus affecting normal production
For a long time, the sintering plant has manually adjusted the switch of the main exhaust fan and desulfurization fan. This not only has a low level of automation, but also may cause large fluctuations in the negative pressure of the desulfurization system due to human negligence and wrong operation, affecting desulfurization. effect, affecting the sintering process
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 moreImage
Smart Image Click on the blue labels to locate them in the text.
Smart ImageViewing Examples
Examples
Experimental program
Comparison scheme
Effect test
Embodiment Construction
[0034] In order to make the above-mentioned features and advantages of the present invention more obvious and easy to understand, the present invention will be described in further detail below in conjunction with the accompanying drawings and specific examples:
[0035] In the described method for combined control of sintering desulfurization and main exhaust fan, the operation steps are as follows:
[0036] Step 1: Set the control parameters, and calculate the adjustment value of the valve opening of the main exhaust fan according to the change of the total material volume of the sintering machine:
[0037] The control parameters mainly include: the maximum allowable current value I_max of the desulfurization fan, 155A; the adjustment step length a of the desulfurization fan valve, 3%; the adjustment step length b of the main exhaust fan valve, 3%; the minimum allowable negative pressure value of the desulfurization tower P0_min, -1000Pa; the lower limit of the normal range ...
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
Login to View More Abstract
The invention relates to a sintering desulfurization and main exhaust fan joint control method which belongs to the technical field of joint control of a sintering main exhaust fan and a desulfurization fan, in particular to a method for controlling the valve opening of the main exhaust fan and the valve opening of the desulfurization fan automatically based on total sintering material amount change, desulfurization fan current change and desulfurization tower negative pressure value change. The method comprises two control modes according to increase and decrease situations of the total material amount of a sintering machine: 1), when the total material amount is increased, relevant operation on a main exhaust valve is increased; and 2), when the total material amount is decreased, the relevant operation on the main exhaust valve is decreased. The valve opening of the desulfurization fan is automatically adjusted in the two modes according to specific conditions. By implementing the sintering desulfurization and main exhaust fan joint control method, the automatic control level of the main exhaust fan and the desulfurization fan is greatly improved during a sintering production process; joint operation and joint adjustment on the main exhaust fan and the desulfurization fan are realized; stability of a desulfurization tower negative pressure value is ensured, and positive pressure and other dangerous conditions are avoided; and the effect of flue gas desulfurization is also improved.
Description
technical field [0001] The invention belongs to the technical field of combined control of a sintering main exhaust fan and a desulfurization fan, and particularly provides a combined control method of the sintering desulfurization and the main exhaust fan. Background technique [0002] In the sintering production process, different total material volumes correspond to different air volume requirements. When the total material volume changes, the valve opening of the main exhaust fan needs to be adjusted accordingly. However, before adjusting the valve of the main exhaust fan, it is necessary to combine the negative pressure of the flue gas desulfurization system. If the valve of the main exhaust fan is adjusted blindly without considering the actual situation of the flue gas desulfurization system, it may cause the negative pressure of the desulfurization tower to develop in a positive direction, and the desulfurization capacity will decrease. , thereby affecting normal pr...
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
Login to View More IPC IPC(8): F27D19/00
CPCF27D19/00F27D2019/0028
Inventor 秦雪刚刘莎莎杨伟强安钢史凤奎石江山郝爱国
Owner BEIJING SHOUGANG AUTOMATION INFORMATION TECH