CN110591768B - Method for measuring flow of synthesis gas washing system under different working conditions - Google Patents
Method for measuring flow of synthesis gas washing system under different working conditions Download PDFInfo
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- CN110591768B CN110591768B CN201910824857.8A CN201910824857A CN110591768B CN 110591768 B CN110591768 B CN 110591768B CN 201910824857 A CN201910824857 A CN 201910824857A CN 110591768 B CN110591768 B CN 110591768B
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- differential pressure
- gas washing
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- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10K—PURIFYING OR MODIFYING THE CHEMICAL COMPOSITION OF COMBUSTIBLE GASES CONTAINING CARBON MONOXIDE
- C10K1/00—Purifying combustible gases containing carbon monoxide
- C10K1/08—Purifying combustible gases containing carbon monoxide by washing with liquids; Reviving the used wash liquors
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F1/00—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow
- G01F1/05—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects
- G01F1/34—Measuring the volume flow or mass flow of fluid or fluent solid material wherein the fluid passes through a meter in a continuous flow by using mechanical effects by measuring pressure or differential pressure
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01F—MEASURING VOLUME, VOLUME FLOW, MASS FLOW OR LIQUID LEVEL; METERING BY VOLUME
- G01F15/00—Details of, or accessories for, apparatus of groups G01F1/00 - G01F13/00 insofar as such details or appliances are not adapted to particular types of such apparatus
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- Chemical & Material Sciences (AREA)
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- Fluid Mechanics (AREA)
- General Physics & Mathematics (AREA)
- Engineering & Computer Science (AREA)
- Combustion & Propulsion (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Oil, Petroleum & Natural Gas (AREA)
- Organic Chemistry (AREA)
- Measuring Volume Flow (AREA)
Abstract
The invention discloses a method for measuring the flow of a synthetic gas washing system under different working conditions, which comprises the steps of selecting a corresponding calculation module according to the working condition of the synthetic gas washing system, and calculating real-time flow data of the collected working current of a differential pressure flowmeter through the calculation module. Has the advantages that: when the operation condition of the synthesis gas washing system is changed, the operation condition can be switched to a plurality of differential pressure flowmeters by one key on a control interface, and the differential pressure flowmeters can be switched to the calculation modules corresponding to the operation condition, so that the flow can be accurately measured under different operation conditions; the differential pressure measuring ranges of a plurality of differential pressure flow meters on the spot do not need to be manually modified one by one, time and labor are saved, the working efficiency is improved, the condition of inaccurate flow measurement caused by manual operation omission, misoperation and the like is avoided, and the safe and reliable operation of the synthetic gas washing system can be ensured.
Description
The technical field is as follows:
the invention relates to the field of synthetic gas washing, in particular to a flow measuring method of a synthetic gas washing system under different working conditions.
Background art:
in a syngas scrubbing system, a throttling device is usually disposed on a pipeline, and a differential pressure flow meter is used to measure a differential pressure value before and after the throttling device, so as to obtain a flow rate of syngas flowing through the pipeline.
Because the synthetic gas washing system can generate a plurality of different working conditions in the operation process, the components of the synthetic gas under the various working conditions are different, and the temperature, the density and the like of the synthetic gas with different components are different, the upper limit value of the differential pressure generated in front of and behind the throttling device is also different, under the condition that the flow scale of the differential pressure flowmeter is not changed, in order to ensure that the measured differential pressure value does not exceed the differential pressure range of the differential pressure flowmeter and further ensure the accuracy and the reliability of the measured flow value, in the actual use process, when the working conditions are changed, technical parameters given in a throttling device design calculation book corresponding to the differential pressure flowmeter need to be provided according to the differential pressure flowmeter, a worker arrives at the site and modifies the differential pressure range of each differential pressure flowmeter manually, because the field differential pressure flowmeters are more in number, the manual range modification is time-consuming and labor-consuming, the efficiency is low, and manual, Inaccurate flow measurement due to misoperation and the like.
The invention content is as follows:
the invention aims to provide a time-saving, labor-saving, accurate and reliable flow measurement method of a synthesis gas washing system under different working conditions.
The invention is implemented by the following technical scheme:
the method for measuring the flow of the synthetic gas washing system under different working conditions is characterized in that a corresponding calculation module is selected according to the working condition of the synthetic gas washing system, and the collected working current of the differential pressure flowmeter is used for calculating real-time flow data through the calculation module.
Further, the calculation formula of the calculation module is as follows:
in the formula, F is real-time flow data, and I is the acquired working current of the differential pressure flowmeter, which can be acquired by on-site acquisition equipment; p is a differential pressure upper limit value corresponding to the working condition; pmax is the maximum differential pressure value in various working conditions; fmax is the flow scale range of the differential pressure flowmeter.
The invention has the advantages that:
when the operation condition of the synthesis gas washing system is changed, the operation condition can be switched to a plurality of differential pressure flowmeters by one key on a control interface, and the differential pressure flowmeters can be switched to the calculation modules corresponding to the operation condition, so that the flow can be accurately measured under different operation conditions; the differential pressure measuring ranges of a plurality of differential pressure flow meters on the spot do not need to be manually modified one by one, time and labor are saved, the working efficiency is improved, the condition of inaccurate flow measurement caused by manual operation omission, misoperation and the like is avoided, and the safe and reliable operation of the synthetic gas washing system can be ensured.
The specific implementation mode is as follows:
the technical solutions in the embodiments of the present invention are clearly and completely described below, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1:
the flow measuring method of the synthetic gas washing system under different working conditions comprises the following steps of firstly, judging which working condition the synthetic gas washing system is under in real time according to the operation condition of a gas production device at a preorder section; and selecting a corresponding calculation module according to the working condition of the synthesis gas washing system, and calculating the collected working current of the differential pressure flowmeter to obtain real-time flow data through the calculation module.
Four operating conditions occur in the syngas scrubbing system during operation, and are referred to as: working condition one, working condition two, working condition three and working condition four; in this embodiment, the differential pressure flowmeter is of the type FY-16003; the parameter indexes respectively corresponding to the four working conditions can be known by referring to a throttle device design calculation book shown in tables 1 to 4;
when the synthesis gas washing system is in a working condition I, the calculation formula of the corresponding calculation module is as follows:
in the formula (1), 35061 is the differential pressure upper limit value corresponding to the working condition one, 40903 is the maximum differential pressure value in the four working conditions, 240000 is the flow scale range of the differential pressure flowmeter, I is the collected working current of the differential pressure flowmeter, which can be collected by the on-site collection equipment, and F is real-time flow data.
When the synthesis gas washing system is in the working condition two, the calculation formula of the corresponding calculation module is as follows:
in the formula (2), 40429 is the differential pressure upper limit corresponding to the second working condition, 40903 is the maximum differential pressure value of the four working conditions, 240000 is the flow scale range of the differential pressure flowmeter, I is the collected working current of the differential pressure flowmeter, which can be collected by the on-site collection equipment, and F is real-time flow data.
When the synthesis gas washing system is in the third working condition, the calculation formula of the corresponding calculation module is as follows:
in the formula (3), 37295 is the upper limit value of the differential pressure corresponding to the third working condition, 40903 is the maximum differential pressure value of the four working conditions, 240000 is the flow scale range of the differential pressure flowmeter, I is the collected working current of the differential pressure flowmeter, which can be collected by the on-site collection equipment, and F is the real-time flow data.
When the synthesis gas washing system is in the working condition four, the calculation formula of the corresponding calculation module is as follows:
in the formula (4), 40903 located in the denominator is the differential pressure upper limit value corresponding to the working condition four, 40903 located in the numerator is the maximum differential pressure value in the four working conditions, 240000 is the flow scale range of the differential pressure flowmeter, I is the collected working current of the differential pressure flowmeter, which can be collected by the on-site collecting equipment, and F is real-time flow data.
TABLE 1 FY-16003 differential pressure flowmeter corresponding to the operating conditions given in the book throttle design calculation
Throttle device design calculation book
Design Standard GB/T2624-2006/ISO 5167-1
Table 2 FY-16003 differential pressure flowmeter corresponding to "throttle device design calculation book" given the corresponding operating conditions of two corresponding parameter index
Throttle device design calculation book
Design Standard GB/T2624-2006/ISO 5167-1
TABLE 3 parameter indexes corresponding to three operating conditions given in throttle device design and calculation book corresponding to FY-16003 differential pressure flowmeter
Throttle device design calculation book
Design Standard GB/T2624-2006/ISO 5167-1
Table 4 FY-16003 differential pressure flowmeter corresponding to the throttle design calculation book given the four corresponding operating conditions of the parameter index
Throttle device design calculation book
Design Standard GB/T2624-2006/ISO 5167-1
The present invention is not limited to the above preferred embodiments, and any modifications, equivalent substitutions, improvements, etc. within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (1)
1. The method for measuring the flow of the synthetic gas washing system under different working conditions is characterized in that a corresponding calculation module is selected according to the working condition of the synthetic gas washing system, and the collected working current of the differential pressure flowmeter is calculated to obtain real-time flow data through the calculation module;
the calculation formula of the calculation module is as follows:
in the formula, F is real-time flow data, and I is the acquired working current of the differential pressure flowmeter, which can be acquired by on-site acquisition equipment; p is a differential pressure upper limit value corresponding to the working condition; pmax is the maximum differential pressure value in various working conditions; fmax is the flow scale range of the differential pressure flowmeter.
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| CN201910824857.8A CN110591768B (en) | 2019-09-02 | 2019-09-02 | Method for measuring flow of synthesis gas washing system under different working conditions |
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| CN110591768B true CN110591768B (en) | 2021-05-18 |
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803050B1 (en) * | 1994-08-12 | 2003-05-07 | Micro Motion Incorporated | Method and apparatus for fault detection and correction in coriolis effect mass flowmeters |
| CN1963402A (en) * | 2006-11-24 | 2007-05-16 | 浙江大学 | A differential pressure type flow measuring method and flow apparatus thereof |
| CN103983314A (en) * | 2014-05-29 | 2014-08-13 | 河北钢铁股份有限公司承德分公司 | Gas flow measuring device and gas flow control method |
| CN106225862A (en) * | 2016-07-14 | 2016-12-14 | 神华集团有限责任公司 | The simple and direct compensation method of gas flow |
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- 2019-09-02 CN CN201910824857.8A patent/CN110591768B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0803050B1 (en) * | 1994-08-12 | 2003-05-07 | Micro Motion Incorporated | Method and apparatus for fault detection and correction in coriolis effect mass flowmeters |
| CN1963402A (en) * | 2006-11-24 | 2007-05-16 | 浙江大学 | A differential pressure type flow measuring method and flow apparatus thereof |
| CN103983314A (en) * | 2014-05-29 | 2014-08-13 | 河北钢铁股份有限公司承德分公司 | Gas flow measuring device and gas flow control method |
| CN106225862A (en) * | 2016-07-14 | 2016-12-14 | 神华集团有限责任公司 | The simple and direct compensation method of gas flow |
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