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A carbon emission intensity assessment method for coal-fired power generation units

A technology of generating sets and emission intensity, which is applied in the direction of electrical digital data processing, instruments, complex mathematical operations, etc., to achieve the effect of reducing calculation errors and saving costs

Active Publication Date: 2019-03-26
HUADIAN ELECTRIC POWER SCI INST CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0008] Aiming at the problem of calculation deviation caused by different standard coal consumption of power supply, the present invention proposes a method for evaluating the carbon emission intensity of coal-fired generating sets, which can be used to check the standard coal consumption of power supply and reduce calculation deviation

Method used

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  • A carbon emission intensity assessment method for coal-fired power generation units
  • A carbon emission intensity assessment method for coal-fired power generation units
  • A carbon emission intensity assessment method for coal-fired power generation units

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0027] see figure 1 , a 300MW subcritical coal-fired power generation unit, the total annual raw coal consumption is 829274t, the average annual low-level heat generation of raw coal is 21738kJ / kg, the annual power supply is 1797795MWh, the annual heat supply is 1075522GJ, and the annual CO 2 The total emission is 1700543tCO 2 , The standard coal consumption for heating is 41.39kg / GJ. Since there are 3 methods and calibers for the statistical methods and calibers of the power consumption of the plant, there are also 3 types of standard coal consumption for power supply of the unit, which are: 311.03, 314.23 and 316.87kg / MWh.

[0028] Step 1, first obtain the calculated power supply CO corresponding to the standard coal consumption of the three kinds of power supply 2 Emission intensity and calculation of heating CO 2 emissions intensity. Taking the standard coal consumption of power supply as 311.03kg / MWh as an example, the calculation of power supply CO 2 Emission intens...

Embodiment 2

[0045] see figure 1, a 660MW supercritical coal-fired power generation unit, the total annual raw coal consumption is 1636999t, the average annual low-level heat generation of raw coal is 21046kJ / kg, the annual power supply is 3861049MWh, the annual heat supply is 0GJ, and the annual CO 2 The total emission is 3273286tCO 2 , the heating standard coal consumption is 0kg / GJ. Since there are 3 methods and calibers for the statistical methods and calibers of the power consumption of the plant, there are also 3 types of standard coal consumption for power supply of the unit, which are: 305.00, 306.17 and 307.32kg / MWh.

[0046] According to the method of step 1~step 4 in embodiment 1, carry out calculation respectively, obtain following result:

[0047]

[0048] Step 5, because the heat supply of the unit is 0GJ, the checked standard coal consumption of power supply obtained from the three kinds of power supply standard coal consumption is 304.47kg / MWh, and the average value of...

Embodiment 3

[0050] see figure 1 , a 145MW ultra-high pressure coal-fired power generation unit, the total annual raw coal consumption is 310314t, the annual average raw coal received base calorific value is 19485kJ / kg, the annual power supply is 469079MWh, the annual heat supply is 1551205GJ, and the annual CO 2 The total emission is 573527tCO 2 , The standard coal consumption for heating is 40.01kg / GJ. Since there are three methods and calibers for the statistical methods and calibers of power consumption of the plant, there are also three types of standard coal consumption for power supply of the unit, which are: 308.73, 312.75 and 320.43kg / MWh.

[0051] According to the method of step 1~step 4 in embodiment 1, carry out calculation respectively, obtain following result:

[0052]

[0053] Step 5, when the standard coal consumption of power supply fluctuates between 308.73-320.43kg / MWh (the fluctuation range is 11.70), check that the standard coal consumption of power supply only fl...

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Abstract

The invention relates to a method for evaluating carbon emission intensity of a coal-fired generator set. The method comprises the following steps: obtaining corresponding calculated power supply CO2 emission intensity and calculated heat supply CO2 emission intensity according to the CO2 total emission quantity, power supply quantity, heat supply quantity, heat supply standard coal consumption and various-caliber power supply standard coal consumption of the coal-fired generator set; obtaining calculated power supply raw coal quantity according to the raw coal consumption total quantity, the calculated power supply CO2 emission intensity and the calculated heat supply CO2 emission intensity of the coal-fired generator set; obtaining calculated power supply standard coal quantity according to the raw coal annual average receipt based low-level heating quality and the calculated power supply raw coal quantity of the coal-fired generator set; obtaining checked power supply standard coal consumption according to the power supply quantity and the calculated power supply standard coal quantity; and obtaining real power supply standard coal consumption, wherein the calculated power supply CO2 emission intensity and the calculated heat supply CO2 emission intensity corresponding to the real power supply standard coal consumption are real power supply CO2 emission intensity and real heat supply CO2 emission intensity. The power supply standard coal consumption is checked, so that the calculation deviation is reduced.

Description

technical field [0001] The invention belongs to the field of carbon emission calculation and relates to a method for evaluating the carbon emission intensity of a coal-fired generating set. Background technique [0002] At present, my country's electricity and heat production account for about 2 With the gradual establishment of the domestic carbon trading market, the calculation method of carbon emission quotas has become an important cornerstone of improving the construction of the carbon market, and it is also a key element for each enterprise to measure its own carbon emission level. In the pilot areas of the carbon trading market, the carbon emission quota of coal-fired power generation enterprises is generally calculated based on the carbon emission intensity at the facility level, that is, according to the CO 2 Emission intensity (tCO 2 / MWh) and heating CO 2 Emission intensity (tCO 2 / GJ) to issue carbon emission allowances. The definitions of both are: [0003...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G06F17/10
CPCG06F2219/10G16Z99/00
Inventor 王凯肖冠华颜喜
Owner HUADIAN ELECTRIC POWER SCI INST CO LTD