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Heating furnace heat efficiency dynamic operation calculating method

A technology of dynamic operation and calculation method, which is applied to fluid heaters, lighting and heating equipment, etc., and can solve problems such as inability to judge the operating state of the heating furnace

Active Publication Date: 2019-01-25
PETROCHINA CO LTD +1
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The present invention provides a method for calculating the dynamic operation of heating furnace thermal efficiency, in order to overcome the incompatibility of conventional field application of the calculation method of heating furnace thermal efficiency in the prior art, resulting in the inability to quickly and intuitively judge the operating state of the heating furnace, etc.

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  • Heating furnace heat efficiency dynamic operation calculating method
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  • Heating furnace heat efficiency dynamic operation calculating method

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Embodiment Construction

[0050] The present invention will be described in detail below in conjunction with the accompanying drawings and embodiments.

[0051] Such as figure 1 As shown, the present invention provides a flow chart of a dynamic calculation method for the thermal efficiency of a heating furnace, which specifically includes steps: step S1, determining the relationship between the temperature rise and efficiency of the heating furnace according to formula (1);

[0052] Efficiency calculation formula of positive balance method:

[0053] (1)

[0054] In the formula:

[0055] C: Specific heat of the furnace medium, unit: kJ / kg·℃;

[0056] D: Furnace medium flow rate, unit: kg / h;

[0057] B: Fuel quantity, unit: Nm 3 / h;

[0058] Q Dw Y : low calorific value, unit: kJ / Nm 3

[0059] t 1 , t 2 : medium inlet temperature, outlet temperature; unit: ℃;

[0060] From the efficiency formula of the positive balance method, it can be seen that under a certain amount of gas and medium ...

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Abstract

The invention relates to the technical field of oil field heating device heat efficiency, in particular to a heating furnace heat efficiency dynamic operation calculating method. The method includes the steps of determining the relation of temperature rise and efficiency of a heating furnace, determining the relation of exhaust smoke temperature and efficiency of the heating furnace, determining the relation of load efficiency and efficiency of the heating furnace, and establishing a heat efficiency control plate of the heating furnace. By means of the calculating method, by drawing the heat efficiency control plate of the heating furnace, through data directly recorded on site, the operation state of the heating furnace can be visually reflected, the operation working conditions of the heating furnace are diagnosed, and the optimized operation of the heating furnace is guided.

Description

technical field [0001] The invention relates to the technical field of thermal efficiency of oilfield heating equipment, in particular to a dynamic operation calculation method for thermal efficiency of a heating furnace. Background technique [0002] At present, there are mainly two types of water-mixed and hot-washing heating furnaces in Daqing Oilfield: heating buffer device (two-in-one) and horizontal cylindrical furnace (high-efficiency furnace). There are two methods for testing the thermal efficiency of the heating furnace: the positive balance method and the reverse balancing act. [0003] Using the positive balance method to test thermal efficiency requires recording parameters such as medium flow, natural gas flow, and inlet and outlet temperatures. Due to the lack of separate measurement of gas and water on site, the positive balance method is not easy to measure. [0004] However, using the inverse balance method to test thermal efficiency requires the use of a ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F24H9/20
CPCF24H9/2035
Inventor 孙立波张建军邢书龙孟令尊李兴国
Owner PETROCHINA CO LTD