CN115839752A - Method and device for verifying accuracy of steam generation amount measuring instrument of converter - Google Patents
Method and device for verifying accuracy of steam generation amount measuring instrument of converter Download PDFInfo
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- CN115839752A CN115839752A CN202211572666.5A CN202211572666A CN115839752A CN 115839752 A CN115839752 A CN 115839752A CN 202211572666 A CN202211572666 A CN 202211572666A CN 115839752 A CN115839752 A CN 115839752A
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Abstract
The invention provides a dust removal fan automatic adjustment energy-saving control method and device, wherein the method comprises the following steps: acquiring the temperature difference and the flue gas quantity of the inlet and the outlet of the converter flue gas; calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount; determining the theoretical converter steam recovery amount according to the smoke heat loss; collecting the actually measured converter steam recovery amount of a converter steam generation amount measuring instrument to be detected on the same day; and judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually measured converter steam recovery amount and the theoretical converter steam recovery amount. The method can quickly and accurately verify the metering accuracy of the converter steam recovery meter and replace the meter to meter the steam generation amount when the meter cannot be recovered in a short period after the fault.
Description
Technical Field
The invention relates to the technical field of cast steel, in particular to a method and a device for verifying the accuracy of a steam generation amount metering instrument of a converter.
Background
A converter of a steel plant can generate a large amount of flue gas in the smelting process, the content of carbon monoxide in the flue gas is high, the economic value generated after the carbon monoxide is recovered is considerable, but the temperature of the flue gas in the initial section of a flue reaches 1600 ℃, and the proper temperature of flue gas dust removal equipment is low, so that the aim of reducing the temperature of the flue gas and converting the heat lost by the flue gas into steam for recovery is fulfilled by filling water in the interlayer of the wall of the flue gas pipeline to ensure the safe operation of the dust removal equipment. The quantity of the recovered steam needs to be measured by a meter, the density change is large due to the change of the steam temperature and the steam pressure after the meter is on line, and a primary element does not have a regular calibration condition after the steam is installed, so that the accuracy of the meter cannot be verified in time.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a method and a device for verifying the accuracy of a steam generation quantity metering instrument of a converter, and the method can be used for quickly and accurately verifying the metering accuracy of a steam recovery instrument of the converter and replacing the instrument to meter the steam generation quantity when the instrument cannot be recovered in a short time after a fault occurs.
In order to achieve the above object, an aspect of the present invention provides a method for verifying the accuracy of a steam generation amount meter of a converter, including:
acquiring the temperature difference and the flue gas quantity of the inlet and the outlet of the converter flue gas;
calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount;
determining the theoretical converter steam recovery amount according to the smoke heat loss;
collecting the converter steam generation amount to be detected and measuring the converter steam recovery amount of the meter measured on the same day;
and judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually measured converter steam recovery amount and the theoretical converter steam recovery amount.
Optionally, calculating the heat loss of the flue gas according to the temperature difference between the inlet and the outlet of the flue gas of the converter and the flue gas amount, includes:
Q cigarette heat ＝Q Cigarette with heating means ×(T y -T 0 )×c p
In the formula, Q Smoke heat Denotes the heat loss of the flue gas, Q, per ton of steel Cigarette with heating means Denotes the amount of fumes produced per ton of steel, c p Represents the constant pressure specific heat capacity, T, of the converter flue gas y Indicating the flue birth temperature, T, of escaping flue gases 0 The temperature of the flue gas entering the cooling tower is shown, and the temperature difference of the inlet and the outlet of the converter flue gas is the difference between the birth temperature of the flue gas escaping from the converter and the temperature of the flue gas entering the cooling tower.
Optionally, determining a theoretical converter steam recovery amount according to the flue gas heat loss includes:
in the formula, Q Steam generating device Represents the amount of steam recovered, H Steam generating device Indicating the enthalpy of the steam.
The invention also provides a device for verifying the accuracy of the measuring instrument of the steam generation amount of the converter, which comprises the following components:
the acquisition module is used for acquiring the temperature difference and the flue gas quantity of the inlet and the outlet of the converter flue gas and acquiring the actually measured converter steam recovery quantity of the converter steam generation quantity measuring instrument to be detected on the same day;
the first calculation module is used for calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount;
the second calculation module is used for determining the steam recovery amount of the theoretical converter according to the heat loss of the flue gas;
and the judging module is used for judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually-measured converter steam recovery amount and the theoretical converter steam recovery amount.
Optionally, calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount, includes:
Q cigarette heat ＝Q Cigarette with heating means ×(T y -T 0 )×c p
In the formula, Q Smoke heat Denotes the heat loss of the flue gas, Q, per ton of steel Cigarette with heating means Denotes the amount of fumes produced per ton of steel, c p Represents the constant pressure specific heat capacity, T, of the converter flue gas y Indicating the flue birth temperature, T, of escaping flue gases 0 The temperature of the flue gas entering the cooling tower is shown, and the temperature difference of the inlet and the outlet of the converter flue gas is the difference between the birth temperature of the flue gas escaping from the converter and the temperature of the flue gas entering the cooling tower.
Optionally, determining a theoretical converter steam recovery amount according to the flue gas heat loss includes:
in the formula, Q Steam generation Represents the amount of steam recovered, H Steam generating device Representing the enthalpy of the steam.
According to the scheme, the invention has the advantages that:
according to the method for verifying the accuracy of the converter steam generation quantity metering instrument based on heat balance, the heat loss of the flue gas is calculated by acquiring the temperature difference of the inlet and the outlet of the flue gas of the converter and the quantity of the flue gas; and then determining the theoretical converter steam recovery amount according to the flue gas heat loss. And finally, judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually measured converter steam recovery amount and the theoretical converter steam recovery amount. The method is based on a heat balance process accounting method, can quickly and accurately verify the metering accuracy of the converter steam recovery instrument, and can replace the instrument to meter the steam generation amount when the instrument cannot be recovered in a short period after a fault.
Drawings
FIG. 1 is a schematic flow chart of a method for verifying the accuracy of a steam generation measuring instrument of a converter;
FIG. 2 is a block diagram of an apparatus for verifying the accuracy of a steam generating quantity measuring instrument of a converter;
wherein, the first and the second end of the pipe are connected with each other,
200-converter steam generation amount measuring instrument accuracy verification device;
201-an acquisition module;
202-a first computing module;
203-a second calculation module;
204-decision module.
Detailed Description
In order to make the aforementioned features and effects of the present invention more comprehensible, embodiments accompanied with figures are described in detail below.
The invention provides a method for verifying the accuracy of a converter steam generation amount metering instrument based on heat balance. Specifically, as shown in fig. 1, fig. 1 shows a specific flow chart of the method for verifying the accuracy of the steam generation amount measuring meter of the converter.
A method for verifying the accuracy of a steam generation amount measuring instrument of a converter comprises the following steps:
s1, acquiring temperature difference and flue gas quantity of an inlet and an outlet of converter flue gas;
and S2, calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount.
In a specific implementation, a formula for calculating the heat loss of the flue gas is as follows:
Q cigarette heat ＝Q Cigarette with heating means ×(T y -T 0 )×c p (1)
Wherein Q is Cigarette heat Denotes the heat loss of the flue gas, Q, per ton of steel Cigarette with heating means Denotes the amount of fumes produced per ton of steel, c p Represents the constant pressure specific heat capacity, T, of the converter flue gas y Indicating the flue birth temperature, T, of escaping flue gases 0 The temperature of the flue gas entering the cooling tower is shown, and the temperature difference between the outlet and the inlet of the converter flue gas is the flue birth temperature of the escaped flue gas and the temperature of the flue gas entering the cooling towerDifference in temperature of the column.
And S3, determining the theoretical converter steam recovery amount according to the smoke heat loss.
In a specific implementation, the formula for calculating the theoretical converter steam recovery amount is as follows:
in the formula, Q Steam generation Represents the amount of steam recovered, H Steam generation Indicating the enthalpy of the steam.
S4, collecting the actually measured converter steam recovery amount of a converter steam generation amount measuring instrument to be detected on the same day;
and S5, judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually measured converter steam recovery amount and the theoretical converter steam recovery amount.
The method for verifying the accuracy of the measuring instrument of the steam generation amount of the converter is described in the following by a specific embodiment.
Taking relevant parameters of a converter of 1#120T at 6 months and 7 days of 2022 as an example, the measurement accuracy of the instrument is verified by calculating the steam recovery amount of the theoretical converter:
the specifically collected information such as the temperature difference between the inlet and outlet of the converter flue gas, the flue gas amount and the like is shown in the following table:
using equation (1), the flue gas heat loss is calculated as:
Q smoke heat ＝Q Cigarette with heating means ×(T y -T 0 )×c y
＝221×(1600-900)×1.6035＝248061.45KJ/t.g
Using equation (2), the theoretical converter steam recovery is calculated as:
inquiring the collected converter steam generation quantity measuring instrument to be detected, wherein the actually measured converter steam recovery quantity is 91.3Kg/t.g on the same day, and the deviation of the actually measured converter steam recovery quantity and the theoretical converter steam recovery quantity is about 3%, so that the measurement of the converter steam generation quantity measuring instrument to be detected is relatively accurate.
Therefore, according to the method for verifying the accuracy of the converter steam generation quantity measuring instrument based on the heat balance, provided by the embodiment of the invention, the heat loss of the flue gas is calculated by acquiring the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas quantity; and then determining the theoretical converter steam recovery amount according to the flue gas heat loss. And finally, judging the accuracy of the converter steam generation amount measuring instrument according to the deviation of the actually-measured converter steam recovery amount and the theoretical converter steam recovery amount. The method is based on a heat balance process accounting method, can quickly and accurately verify the metering accuracy of the converter steam recovery instrument, and can replace the instrument to meter the steam generation amount when the instrument cannot be recovered in a short period after a fault.
The invention further provides a device 200 for verifying the accuracy of the measuring instrument of the steam generation amount of the converter, and the device for verifying the accuracy of the measuring instrument of the steam generation amount of the converter provided by the embodiment of the application can realize each process realized by the method for verifying the accuracy of the measuring instrument of the steam generation amount of the converter.
As shown in fig. 2, fig. 2 shows an architecture diagram of a converter steam generation amount meter accuracy verification device 200. The device at least comprises:
the acquisition module 201 is used for acquiring the temperature difference and the flue gas quantity of the inlet and outlet of the converter flue gas and acquiring the actually measured converter steam recovery quantity of the converter steam generation quantity measuring instrument to be detected on the same day;
the first calculation module 202 is configured to calculate a flue gas heat loss according to the inlet and outlet temperature difference of the converter flue gas and the flue gas amount;
and the second calculation module 203 is used for determining the theoretical converter steam recovery amount according to the flue gas heat loss.
And the judging module 204 is configured to judge accuracy of the converter steam generation amount measuring instrument according to a deviation between the actually-measured converter steam recovery amount and the theoretical converter steam recovery amount.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrases "comprising a component of' 8230; \8230;" does not exclude the presence of another like element in a process, method, article, or apparatus that comprises the element. Further, it should be noted that the scope of the methods and apparatus of the embodiments of the present application is not limited to performing the functions in the order illustrated or discussed, but may include performing the functions in a substantially simultaneous manner or in a reverse order based on the functionality involved, e.g., the methods described may be performed in an order different than that described, and various steps may be applied, omitted, or combined. In addition, features described with reference to certain examples may be combined in other examples.
While the present embodiments have been described with reference to the accompanying drawings, it is to be understood that the present embodiments are not limited to those precise embodiments, which are intended to be illustrative rather than restrictive, and that various changes and modifications may be effected therein by one skilled in the art without departing from the scope of the appended claims.
Claims (6)
1. A method for verifying the accuracy of a steam generation amount measuring instrument of a converter is characterized by comprising the following steps:
acquiring the temperature difference and the flue gas quantity of the inlet and the outlet of the converter flue gas;
calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount;
determining the theoretical converter steam recovery amount according to the smoke heat loss;
collecting the actually measured converter steam recovery amount of a converter steam generation amount measuring instrument to be detected on the same day;
and judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually measured converter steam recovery amount and the theoretical converter steam recovery amount.
2. The method for verifying the accuracy of the steam generation quantity measuring instrument of the converter according to claim 1, wherein the step of calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas quantity comprises the following steps:
Q smoke heat ＝Q Cigarette with heating means ×(T y -T 0 )×c p
In the formula, Q Cigarette heat Representing the heat loss of the flue gas, Q, generated per ton of steel Cigarette with heating means Denotes the amount of fumes produced per ton of steel, c p Represents the constant pressure specific heat capacity, T, of the converter flue gas y Indicating the flue birth temperature, T, of escaping flue gases 0 The temperature of the flue gas entering the cooling tower is shown, and the temperature difference of the inlet and the outlet of the converter flue gas is the difference between the birth temperature of the flue gas escaping from the converter and the temperature of the flue gas entering the cooling tower.
3. The method for verifying the accuracy of the steam generation measuring instrument of the converter according to claim 2, wherein the determining the theoretical recovery amount of the converter steam according to the heat loss of the flue gas comprises:
in the formula, Q Steam generating device Represents the amount of steam recovered, H Steam generating device Representing the enthalpy of the steam.
4. A converter steam generation amount measuring instrument accuracy verification device is characterized by comprising:
the acquisition module is used for acquiring the temperature difference and the flue gas quantity of the inlet and the outlet of the converter flue gas and acquiring the actually measured converter steam recovery quantity of the converter steam generation quantity measuring instrument to be detected on the same day;
the first calculation module is used for calculating the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount;
the second calculation module is used for determining the steam recovery amount of the theoretical converter according to the heat loss of the flue gas;
and the judging module is used for judging the accuracy of the converter steam generation amount metering instrument according to the deviation of the actually-measured converter steam recovery amount and the theoretical converter steam recovery amount.
5. The device for verifying the accuracy of the steam generation measuring instrument of the converter according to claim 4, wherein the calculating of the heat loss of the flue gas according to the temperature difference of the inlet and the outlet of the flue gas of the converter and the flue gas amount comprises:
Q cigarette heat ＝Q Cigarette with heating means ×(T y -T 0 )×c p
In the formula, Q Cigarette heat Denotes the heat loss of the flue gas, Q, per ton of steel Cigarette with heating means Denotes the amount of fumes produced per ton of steel, c p Represents the constant pressure specific heat capacity, T, of the converter flue gas y Indicating the flue birth temperature, T, of escaping flue gases 0 And the temperature of the flue gas entering the cooling tower is shown, and the temperature difference of the inlet and the outlet of the converter flue gas is the difference between the birth temperature of the escaped flue gas and the temperature of the flue gas entering the cooling tower.
6. The apparatus for verifying the accuracy of a steam generation measuring instrument of a converter according to claim 5, wherein the determining the theoretical recovery amount of the converter steam according to the heat loss of the flue gas comprises:
in the formula, Q Steam generation Represents the amount of vapor recovered, H Steam generating device Indicating the enthalpy of the steam.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211572666.5A CN115839752A (en) | 2022-12-08 | 2022-12-08 | Method and device for verifying accuracy of steam generation amount measuring instrument of converter |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211572666.5A CN115839752A (en) | 2022-12-08 | 2022-12-08 | Method and device for verifying accuracy of steam generation amount measuring instrument of converter |
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| CN202211572666.5A Pending CN115839752A (en) | 2022-12-08 | 2022-12-08 | Method and device for verifying accuracy of steam generation amount measuring instrument of converter |
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- 2022-12-08 CN CN202211572666.5A patent/CN115839752A/en active Pending
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