WO2017092027A1 - Pressure control fixed value adjusting system based on fuel composition - Google Patents

Abstract

A pressure control fixed value adjusting system based on the fuel composition, comprising a fuel supply line (10), several Venturi burners (30) and several control valves (20) connecting to the fuel supply line (10). The control valve (20) is disposed on the fuel supply line (10) to control the valve opening for the fuel supply line (10). The control valve (20) has a pressure control fixed value. The pressure control fixed value adjusting system comprises a controller (40). The controller (40) is connected to the control valve (20) so as to automatically adjust the pressure control fixed value of the control valve (20) according to the composition of the fuel within the fuel supply line (10).

Description

 Pressure control fixed value adjustment system based on fuel composition Technical field

The present invention relates to an ejector combustion apparatus, and more particularly to a pressure control fixed value adjustment system for an ejector combustion apparatus.

Background technique

In the petrochemical plant, the venting flare system can process the excess, harmful and unbalanced exhaust gas discharged from the production device in time, and can handle the test vehicle, the unqualified gas generated during the parking, and the large amount of gas instantaneously released during the accident to ensure the device. Normal and safe operation. Torch burning should maintain the stability of the flame. If the problem of flame extinction occurs, a large amount of toxic, corrosive, flammable and explosive gas will overflow and spread, which will not only cause casualties, pollute the environment, but also cause serious explosions. Fire. Moreover, if the combustion of the fuel is incompletely burned and inefficiently burned, a large amount of harmful emissions such as carbon monoxide, nitrogen oxides and the like will be generated.

The venting flare system typically employs an ejector-type combustion apparatus that uses several venturi burners to combust the gas. The opening or closing of the burner air supply valve is based on the pressure of the fuel. The control valve controls the maximum amount of fuel flowing through the valve. If the amount of fuel is exceeded, the currently open burner cannot effectively treat the excess amount, and the combustion is insufficient, resulting in a large amount of harmful emissions. Therefore, more control valves need to be opened to allow more burners to participate in the combustion. The composition of the different fuels or the impurities contained in them are different, and the fixed value of the pressure control of the valve is also different. If the fixed value of the pressure control does not match the fuel composition, the torch conditions are unstable and may produce a large amount of harmful emissions.

technical problem

In view of the above, the present invention provides a fuel component based pressure control fixed value adjustment system that solves at least one of the above problems.

Technical solution

The present invention provides a pressure control fixed value adjustment system based on a fuel component, comprising a fuel supply line, a plurality of control valves connected to the fuel supply line, and a plurality of venturi burners, the control valve being disposed at the fuel a supply line for controlling a valve opening of the fuel supply line, the control valve having a fixed value of pressure control, wherein the pressure control fixed value adjustment system comprises a controller, the controller and the The control valve is coupled to automatically adjust a fixed value of the pressure control of the control valve according to a component of the fuel in the fuel supply line.

In one embodiment, a fuel component detector is further coupled to the fuel supply line for detecting a composition of fuel in the fuel supply line, the fuel component detector and Controlling the connection to communicate the results of the detection to the controller.

Beneficial effect

In summary, the present invention provides a pressure control fixed value adjustment system based on a fuel component, which automatically adjusts a fixed value of a pressure control of a control valve according to a fuel component, so that a fixed value of the pressure control is adapted to different fuel components, thereby improving The combustion stability of the flare system.

DRAWINGS

1 is a simplified schematic diagram of a combustion system of an ejector burner.

2 is a schematic diagram of a pressure control fixed value adjustment system.

Embodiments of the invention

Before the embodiments are described in detail, it is understood that the invention is not limited to the details The invention may be embodied in other ways. Also, it will be understood that the phraseology and terminology used herein are for the purpose of description The words "including", "comprising", "having", and <RTIgt; </ RTI> <RTIgt; </ RTI> used herein are meant to include the items listed thereafter, their equivalents, and other additional items. In particular, when describing "a certain element", the invention does not limit the number of the elements to one, and may include a plurality.

1 is a simplified schematic diagram of a combustion system of an ejector burner including a fuel supply line 10, a control valve 20 coupled to the fuel supply line 10, and a venturi burner 30. The fuel supply line 10 delivers gas from a fuel source, such as an oil well, to the venturi burner 30 for combustion. The number of venturi burners 30 may be one or more, and the number is not limited. A control valve 20 is provided on the fuel supply line 10 to control the valve opening of the fuel supply line. The fuel supply line 10 can have a plurality of branches, each of which is provided with one such control valve 20 and to which one or more venturi burners 30 are coupled. Figure 1 only schematically shows two branches.

The control valve 20 has a fixed value of pressure control. For a venturi burner designed to have a maximum amount of gas that can be processed. Therefore, if the pressure of the gas in the pipeline exceeds the fixed value of the pressure control, it means that the amount of gas in the pipeline has exceeded the maximum processing capacity of the connected venturi burner, and the venturi needs to open more branches. The burner burns the gas.

For different gases, the maximum processing capacity of the venturi burner is different because of the different impurities. In general, the pressure control fixed value of the control valve 20 is set at 0.8 MPa. The flare gas component includes different hydrocarbons such as H2, H2S, CO2 , N2, etc., the relative percentage of each gas is also constantly changing, which determines that the average molecular weight and density of the torch also changes, so the flow pressure changes. Therefore, the pressure control fixed value adjustment system of the present invention adjusts the pressure control fixed value of the control valve 20 for different gas components.

As shown in FIG. 2, in the embodiment, the pressure control fixed value adjustment system includes a controller 40 and a fuel component detector 50. The controller 40 is coupled to the control valve 20 for automatically adjusting the pressure control fixed value of the control valve 20 based on the composition of the fuel in the fuel supply line. A fuel component detector 50 is coupled to the fuel supply line 10 for detecting the composition of fuel within the fuel supply line 10, the fuel component detector 50 being coupled to the control 40 to communicate the results of the detection to the Controller 40 is described.

In addition, in some cases, the gas has been treated at the well, and the composition and type of fuel have been analyzed. In this case, the detection of the fuel component detector 50 is not required, and only the fuel composition and type need to be input to the controller. 40 can be.

In the above embodiment, the controller automatically adjusts the fixed value of the pressure control of the control valve according to the fuel component, adapts the fixed value of the pressure control to different fuel components, and improves the combustion stability and environmental protection of the flare system.

The concepts described herein may be embodied in other forms without departing from the spirit and scope. The specific embodiments disclosed are to be considered as illustrative and not restrictive. Therefore, the scope of the invention is to be determined by the appended claims Any changes which come within the meaning and range of the claims are intended to be within the scope of the claims.

Claims (2)

1. A pressure control fixed value adjustment system based on a fuel component, comprising a fuel supply line, a control valve connected to the fuel supply line, and a venturi burner, the control valve being disposed on the fuel supply line for control a valve opening degree of the fuel supply line, the control valve having a fixed value of pressure control, wherein the pressure control fixed value adjustment system includes a controller, and the controller is connected to the control valve And a method for automatically adjusting a pressure control fixed value of the control valve according to a component of the fuel in the fuel supply line.
2. A fuel component-based pressure control fixed value adjustment system according to claim 1, further comprising a fuel component detector, said fuel component detector being coupled to said fuel supply line to detect said fuel supply A component of fuel within the conduit, the fuel component detector being coupled to the control to communicate the result of the detection to the controller.