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Offshore generating host flue gas amount measuring and calculating method

A calculation method and technology of flue gas volume, applied in relative volume flow measurement, measuring device, liquid/fluid solid measurement, etc., can solve problems such as inability to accurately measure flue gas volume of offshore generator hosts, and solve technical difficulties and waste heat Accurate effect of recovery and flue gas volume

Inactive Publication Date: 2017-04-26
HUNAN INSTITUTE OF ENGINEERING
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Purpose of the invention: Aiming at the technical problem that the existing flue gas volume measurement method cannot accurately measure the flue gas volume of the main engine of the offshore generator, the present invention provides a method for measuring and calculating the flue gas volume of the main engine of the offshore generator. The gas calculation method is applied to the calculation of the flue gas volume of gas turbines and diesel engines, and the oxygen content in the flue gas is measured experimentally to determine the excess air coefficient in operation. At the same time, the value range of the excess air coefficient is expanded to solve the offshore Technical Difficulties in Waste Heat Recovery of Main Engines in Oil Production Facilities

Method used

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  • Offshore generating host flue gas amount measuring and calculating method
  • Offshore generating host flue gas amount measuring and calculating method
  • Offshore generating host flue gas amount measuring and calculating method

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Experimental program
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Effect test

Embodiment 1

[0096] In this embodiment, a method for measuring and calculating the flue gas volume of an offshore generator main engine includes the following steps:

[0097] Step 1: Determine the type of fuel used by the main engine of offshore oil production facilities. This time, the 111FPSO main engine is used, and the fuel used is crude oil. The components and contents of crude oil are shown in Table 1:

[0098] Table 1 Composition and content of 111FPSO crude oil

[0099]

[0100] Step 2: Perform flue gas analysis and test on 111FPSO host to obtain flue gas parameters and content, see Table 2:

[0101] Table 2 The parameters and content table obtained from the smoke composition test

[0102]

[0103] Step 3: Utilize O 2 、RO 2 check figure 1 and 2 Get the excess air coefficient α g is 2.8, or the excess air coefficient is 2.4 calculated by the formula, the formula is as follows:

[0104]

[0105]

[0106] Step 4: Calculate the theoretical air volume V using the volu...

Embodiment 2

[0117] In this embodiment, a method for measuring and calculating the flue gas volume of an offshore generator main engine includes the following steps:

[0118] Step 1: Determine the type of fuel used by the main engine of offshore oil production facilities. This time, the main engine of Jinzhou 9-3 oil production platform is used, and the fuel used is natural gas. The components and contents of natural gas are shown in Table 4:

[0119] Table 4 Composition and content of natural gas

[0120]

[0121] At the same time, the flue gas analyzer was used to collect data on the exhaust gas of the generator main engine of the 9-3 platform, as shown in Table 5:

[0122] Table 5 Exhaust gas test data of 9-3 platform generator main engine

[0123]

[0124] Step 2: Perform flue gas analysis and test on the main engine of the 9-3 oil production platform to obtain flue gas parameters and their content, see Table 6:

[0125] Table 6 The parameters and content table obtained from the ...

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Abstract

The invention discloses an offshore generating host flue gas amount measuring and calculating method. The method comprises the following steps: determining fuel type used for an offshore oil extraction facility host, providing the component and content of the fuel; performing flue gas analysis tests in the offshore generating host, obtaining the flue gas parameter and content; using content of O2 and RO2 to obtain the excess air coefficient alpha g; using the volume fraction of the components of the fuel to calculate the theoretical air quantity V0; using the flue gas content of RO2, NO2, and H2O to calculate the theoretical volume of RO2, NO2, and H2O, obtaining the theoretical flue gas quantity, and using the excess air coefficient alpha g, the theoretical air quantity V0, and the theoretical flue gas quantity to calculate the practical flue gas amount Vy. According to the invention, a flue gas calculating method is introduced into a boiler combustion process, the excess air coefficient in operation is determined by employing oxygen content in the flue gas, a value range of the excess air coefficient is developed, and the technical problem of waste heat recovery of the offshore oil extraction facility host is solved.

Description

technical field [0001] The invention relates to the field of energy conservation and environmental protection, in particular to a method for measuring and calculating the flue gas volume of a main engine of an offshore generator. Background technique [0002] Whether it is a gas turbine or a diesel engine, when recovering waste heat, two key parameters need to be determined: flue gas volume and flue gas temperature. For flue gas temperature, it is relatively easy to measure, and it can be tested by punching (such as 9-3 platform), but it is more difficult to test the flue gas volume of the exhaust gas of the main engine of offshore oil production facilities. At present, the measurement of flue gas volume or flue gas velocity includes the following methods: [0003] 1. Differential pressure flow measurement method. This method reflects the flow rate of the fluid by measuring the differential pressure signal of the fluid based on the basic principle provided by the Bernoulli...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01F9/00
CPCG01N33/0004G01F9/00
Inventor 刘向龙曾丽萍欧阳军李小华陈晓
Owner HUNAN INSTITUTE OF ENGINEERING