Heating control method of TEG reboiler fire tube

A heating control and reboiler technology, applied in chemical instruments and methods, control combustion, lighting and heating equipment, etc., can solve the problems of easy flameout, large inertia, large lag, etc., to solve the problem of reboiler flameout, Optimizing the adjustment and control method of the burner and solving the effect of overshooting the temperature of the TEG solution
CN102937299BActive Publication Date: 2014-12-17BC P INC CHINA NAT PETROLEUM CORP +1
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Patent Information

Authority / Receiving Office
CN Β· China
Patent Type
Patents(China)
Current Assignee / Owner
BC P INC CHINA NAT PETROLEUM CORP
Publication Date
2014-12-17

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Abstract

The invention discloses a heating control method of a TEG reboiler fire tube. According to the heating control method, a linear function generator is added by auxiliary burner ports; when each auxiliary burner port is used for burning, the opening of the fuel gas regulating valve is slowly and steadily increased according to the low limit value of a temperature controller, thereby well solving the problem of temperature overshoot of TEG solution of the reboiler; by reasonably arranging the arraying sequence of the burner ports on the reboiler, the influence of the additionally used auxiliary burner ports on the stability of the flame of a main burner port can be reduced; and by optimizing the burner port regulating and control method, the opening of the fuel gas regulating valve is small when the additionally used auxiliary burner ports are used, the flow speed of fixed fuel gas out of the burner is low, the influence of the additionally used burner ports on the stability of the flame of burnt burner ports is effectively reduced, and the problem of flameout of the reboiler caused by adding of burning of burner ports is fundamentally solved.
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Description

technical field

[0001] The invention belongs to the technical field of triethylene glycol (TEG) regeneration technology in the petroleum and natural gas industry, and in particular relates to a method for switching burners and controlling temperature of a TEG reboiler. Background technique

[0002] In the triethylene glycol dehydration process, the TEG rich liquid after absorbing water needs to be heated and concentrated before it can be recycled. It is the most convenient method to use a direct flame heating fire tube reboiler for heating and concentration. The reboiler is generally operated under normal pressure, and the concentration of TEG will increase with the increase of the temperature of the reboiler. The concentration of TEG rich liquid can generally reach 98%~99% after being regenerated and concentrated by the reboiler. The temperature of the TEG reboiler is generally controlled at about 190~204Β°C. If the temperature is too high, the TEG will decompose and deterio...

Claims

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