CN104267158A - Steel slag pressurized hot and stuffy gas composition online monitoring device and method - Google Patents
Steel slag pressurized hot and stuffy gas composition online monitoring device and method Download PDFInfo
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Abstract
The invention relates to a steel slag pressurized hot and stuffy gas composition online monitoring device and a method. The method comprises the following steps: pumping out gas in a pressurized hot and stuffy tank 1 according to a certain flow rate in the hot and stuffy process, condensing the pumped gas through a condenser 4 and removing vapor to obtain dry gas, successively measuring the temperature, the pressure and the flow rate of the dry gas and introducing the dry gas into a gas analyzer 9 to monitor dry gas compositions in real time; meanwhile, collecting the vapor as well as condensate water and determining the mass of the condensate water in a weighing manner so as to determine the real-time flow rate of the vapor; in combination with the dry gas compositions monitored in real time, the real-time monitoring of the gas compositions in the hot and stuffy tank can be realized. The steel slag pressurized hot and stuffy gas composition online monitoring device and the method have the advantages that the monitoring of the hot and stuffy gas in the process of processing steel slag in the pressurized hot and stuffy tank is realized, the monitoring device is simple to mount and operate and has strong compatibility with a PLC (Programmable Logic Controller) system, the online monitoring of the pressurized hot and stuffy gas compositions can be realized, the control of combustible gas content in the tank in the hot and stuffy process is facilitated, and an important role in eliminating potential safety hazards is played.
Description
Technical field
The present invention relates to a kind of slag and have the hot sulks Body components on-Line Monitor Device of pressure and method, particularly a kind of device and method of the gas componant on-line monitoring containing water vapor.
Background technology
Often produce the slag that 1 ton of steel about produces 0.12 ~ 0.14 ton, within 2013, China's slag generation is about 1.01 hundred million tons, and utilization factor is 30%, and large steel slag does not have recycling, land occupation, contaminated environment.
Traditional Technology of Steel Slag Processing is that pool heat vexedly adds crushing-magnetic selection, and there have the hot vexed system of pressure to compare pool heat to be vexed, improve slag processing efficiency and automaticity, but hot vexed process high-temperature steel slag and water reaction produce a certain amount of inflammable gas, cause potential safety hazard.Therefore, realize having in the hot vexed production run of pressure, in tank, the Real-Time Monitoring of combustible gas component is most important to guarantee safety in production.
There is the hot vexed process of pressure can produce a large amount of water vapor, and current flowmeter and gas analyzer are all not steam-laden pure gas phases to the requirement of measuring media, be difficult to realize measuring combustible gas component under the condition containing a large amount of water vapor, on-line real time monitoring is extremely difficult especially.
Therefore, solve the problem of the on-line real time monitoring of the complex condition combustible gas component containing a large amount of water vapor, not only can ensure the safety in production that pressure heat is vexed, also for the monitoring of the similar operating mode of other industry provides thinking.
Summary of the invention
Technical scheme of the present invention is as follows:
One has the hot sulks Body components on-Line Monitor Device of pressure, and it comprises: have the hot vexed tank of pressure, valve, air entraining pipe, condenser, water tank, mass sensor, temperature, pressure and flow sensor, bronchus, gas analyzer, PLC control system and calculating and display system, air entraining pipe comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe, there is the opening of pressing hot vexed tank gas outlet by the inlet end of the first air entraining pipe connection valve, the endpiece of valve connects condenser by the first air entraining pipe, condenser connects water tank, condenser is to the sample gas condensation dehydration flowing through condenser, the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank, at water tank bottom installation quality sensor, water tank upper connects temperature by the second air entraining pipe, pressure and flow sensor, in temperature, the 3rd air entraining pipe side spending tracheae after pressure and flow sensor, gas analyzer extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas and analysis result be sent to calculating and display system, wherein, mass sensor and temperature, monitoring result is sent to PLC control system by pressure and flow sensor, obtain real-time quality flow and the dry gas real-time quality flow of condensate water, calculate and be connected PLC control system with display system, and therefrom read real-time quality flow and the dry gas real-time quality flow of condensate water, and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analyze the volume fraction obtaining pressing each gas in hot vexed tank, and show in calculating and display system.
Wherein, described device also comprises air pump, and temperature, pressure are connected air pump with flow sensor by the 3rd air entraining pipe.Wherein, calculating and display system are Computer display platform.Wherein, described valve is electric control valve.
The present invention relates to a kind of slag and have the method for pressing hot sulks Body components on-line monitoring, gas in the hot vexed tank of pressure will be had in the vexed process of heat to extract out by certain flow rate, gas bleeding is removed water vapor through condenser condenses and is obtained dry gas, then measures the temperature of dry gas, pressure, flow introduce gas analyzer Real-Time Monitoring gas componant; Collected by water vapor condensation water simultaneously, by the quality of mode determination condensate water of weighing, thus determine the real-time traffic of water vapor, survey real-time gas composition in conjunction with dry gas, can realize Real-Time Monitoring has and presses hot vexed tank composition of gases within.
Adopting above-mentioned device to there being a method of pressing hot sulks Body components on-line monitoring, comprising the steps:
(1) there being the upper shed of pressure hot vexed tank gas outlet, sample gas is drawn by valve regulation aperture;
(2) sample gas dewaters through condenser condenses, the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank, by the mass sensor that water tank bottom is installed, condensate quality monitoring result is sent to PLC control system by mass sensor, calculates the real-time quality flow of condensate water;
(3) measured temperature, pressure and the flow of removing the dry gas after water vapor by temperature, pressure and flow sensor, and monitoring result is sent to PLC control system, calculate the real-time quality flow of dry gas;
(4) the 3rd air entraining pipe side spending tracheae after temperature, pressure and flow sensor, gas analyzer extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas, and analysis result is sent to calculating and display system;
(5) calculating is connected PLC control system with display system, and the dry gas real-time quality flow in the real-time quality flow of condensate water from its database in read step (2) and step (3), and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analyze the volume fraction obtaining pressing each gas in hot vexed tank, and show in calculating and display system.
Wherein, described device also comprises air pump, and temperature, pressure are connected air pump with flow sensor by the 3rd air entraining pipe, and in later stage tank during insufficient pressure, booster air pump extracts sample gas; And unnecessary sample gas is discharged through air entraining pipe and air pump.
Wherein, after once hot vexed process terminates, the water in emptying water tank.
Advantage of the present invention is on device and method realizes the gas componant Real-Time Monitoring containing a large amount of water vapor, install simple to operate, do not affect the independent operating of PLC system, and it is compatible strong with PLC system, technically achieve the on-line monitoring of pressing hot sulks Body components, control combustible gas component in tank in time in production run, get rid of potential safety hazard and play an important role.
Accompanying drawing explanation
Fig. 1 has the hot sulks Body components on-Line Monitor Device schematic diagram of pressure
Embodiment
One has the hot sulks Body components on-Line Monitor Device of pressure as shown in Figure 1, have the hot sulks Body components on-Line Monitor Device of pressure, it comprises: have pressure hot vexed tank 1, electric control valve 2, air entraining pipe 3, condenser 4, water tank 5, mass sensor 6, temperature, pressure and flow sensor 7, bronchus 8, gas analyzer 9, air pump 10, PLC control system 11 and calculate and display system 12, air entraining pipe 3 comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe, there is the opening of pressing hot vexed tank 1 gas outlet by the inlet end of the first air entraining pipe 3 connection valve 2, the endpiece of valve 2 connects condenser 4 by the first air entraining pipe 3, condenser 4 connects water tank 5, condenser 4 is to the sample gas condensation dehydration flowing through condenser 4, the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank 5, installation quality sensor 6 bottom water tank 5, water tank upper connects temperature by the second air entraining pipe 3, pressure and flow sensor 7, in temperature, the 3rd air entraining pipe side spending tracheae 8 after pressure and flow sensor 7, gas analyzer 9 extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas and analysis result be sent to calculating and display system 12, wherein, mass sensor 6 and temperature, monitoring result is sent to PLC control system by pressure and flow sensor 7, obtain real-time quality flow and the dry gas real-time quality flow of condensate water, calculate and be connected PLC control system with display system 12, and therefrom read real-time quality flow and the dry gas real-time quality flow of condensate water, and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analyze the volume fraction obtaining pressing each gas in hot vexed tank 1, and show in calculating and display system 12.Wherein temperature, pressure and flow sensor 7 comprise that respectively corresponding said temperature is measured, three sensors of three kinds of functions of pressure survey and flow measurement, for the ease of representing, the unified mark 7 that adopts represents.Temperature, pressure are connected air pump 10 with flow sensor 7 by the 3rd air entraining pipe 3, and wherein, according to having, pressure in pressure heat vexed production tank in early stage is large, and the feature that in later stage tank, pressure is little, installs aspiration pump in air entraining pipe terminal, starts when later stage tolerance is not enough.And unnecessary sample gas is discharged through air entraining pipe and air pump., calculating and display system are Computer display platform 12.
One has the hot sulks Body components on-line monitoring method of pressure, and comprise the steps: that (1) is having the upper shed of pressure hot vexed tank 1 gas outlet, regulate aperture to draw sample gas by electric control valve 2, in later stage tank during insufficient pressure, booster air pump 10 extracts; (2) sample gas is through condenser 4 condensation dehydration, the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank 5, by the mass sensor 6 installed bottom water tank 5, condensate quality monitoring result is sent to PLC control system 11 by mass sensor, calculates the real-time quality flow of condensate water; PLC control system shows the real-time quality flow calculating condensate water; (3) measure the temperature of the dry gas after removing water vapor, pressure and flow by temperature, pressure and flow sensor 7, and monitoring result is sent to PLC control system 11, calculate the real-time quality flow of dry gas; PLC control system shows the real-time quality flow calculating dry gas; (4) the 3rd air entraining pipe side spending tracheae 8 after temperature, pressure and flow sensor, gas analyzer 9 extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas, and analysis result is sent to calculating and display system 12; The numerical signal of the volume fraction of each gas through signal transacting, enter calculate and display system 12 show, unnecessary sample gas through air entraining pipe and air pump discharge; (5) calculating is connected PLC control system 11 with display system 12, and the dry gas real-time quality flow in the real-time quality flow of condensate water from its database in read step 2 and step 3, and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analyze the volume fraction obtaining pressing each gas in hot vexed tank 1, and show in calculating and display system (12); (6) after once hot vexed process terminates, the water in emptying water tank.
Wherein, by condenser to the dehydration of gas sample, and by condensation water collection, the measurement to water vapor real-time traffic is realized by the mode measuring weight.Wherein, by the real-time measurement to dry gas temperature, pressure and flow, the measurement of dry gas real-time quality flow is realized.Wherein, mention measured value by reading in PLC control system step (5), and in conjunction with the measurement result of dry gas gas componant, realize having the hot vexed tank tank composition of gases within of pressure to measure and display.
Monitoring method design is based on following computing formula:
The design basis of this method is perfect condition equation (see formula (1)) and deformation formula thereof
PV＝nRT (1)
P, pressure Pa; V, volume m
3; T, temperature K; The amount of n-gaseous matter, unit mol; R represents gas law constant, often gets 8.314 J/molk.
Q
v, volumetric flow rate m
3/ s; T, time s;
Q
n, molar flow mol/s;
Q
n1, dry gas molar flow mol/s; P
1, dry gas pressure Pa; Q
v1, dry gas volume flow m
3/ s; T
1, dry gas temperature K; The real-time quality flow calculating dry gas of its corresponding step (3).
Q
n2, condensate water molar flow mol/s; m
2,0, m
2,1, condensate water weight corresponding in 0 moment and 1 moment water tank, g; t
0, t
1, 0 moment and time corresponding to 1 moment (time interval setting is shorter, and precision is higher), s; The real-time quality flow calculating condensate water of its corresponding step (2).
there is the volumn concentration of dry gas in the hot vexed tank of pressure, %
have the volumn concentration of gas to be measured in the hot vexed tank of pressure, %, wherein i is the title of gas to be measured, as H
2, O
2deng;
the volumn concentration of gas to be measured in dry gas that gas analyzer measures, %; Dry gas real-time quality flow in the real-time quality flow of the calculating of its corresponding step (5) and the condensate water of display system 12 from the database of PLC control system 11 in read step 2 and step 3, and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analyze the volume fraction obtaining pressing each gas in hot vexed tank 1.
Wherein, according to having, pressure in pressure heat vexed production tank in early stage is large, and the feature that in later stage tank, pressure is little, installs aspiration pump 10 in air entraining pipe 3 terminal, starts when later stage tolerance is not enough.Wherein, also can be large according to there being pressure in pressure heat vexed production tank in early stage, the feature that in later stage tank, pressure is little, on air entraining pipe, aspiration pump is installed in the front end of retaining valve, starts when later stage tolerance is not enough.
Wherein, the discharge of unnecessary sample gas will, through retaining valve, avoid extraneous air to flow backwards.
Wherein, this method and device are suitable for but have been not limited to the hot vexed production run of pressure, and the on-line measurement of similar operating mode gas componant is all applicable.
Claims (7)
1. have the hot sulks Body components on-Line Monitor Device of pressure, it comprises: have the hot vexed tank (1) of pressure, valve (2), air entraining pipe (3), condenser (4), water tank (5), mass sensor (6), temperature, pressure and flow sensor (7), bronchus (8), gas analyzer (9), PLC control system (11) and calculate and display system (12), air entraining pipe (3) comprises the first air entraining pipe, the second air entraining pipe and the 3rd air entraining pipe, there is the opening of pressing hot vexed tank (1) gas outlet by the inlet end of the first air entraining pipe (3) connection valve (2), the endpiece of valve (2) connects condenser (4) by the first air entraining pipe (3), condenser (4) connects water tank (5), condenser (4) is to the sample gas condensation dehydration flowing through condenser (4), the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank (5), at water tank (5) bottom installation quality sensor (6), water tank upper connects temperature by the second air entraining pipe (3), pressure and flow sensor (7), in temperature, the 3rd air entraining pipe side spending tracheae (8) after pressure and flow sensor (7), gas analyzer (9) extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas and analysis result be sent to calculating and display system (12), wherein, mass sensor (6) and temperature, monitoring result is sent to PLC control system by pressure and flow sensor (7), obtain real-time quality flow and the dry gas real-time quality flow of condensate water, calculate and be connected PLC control system with display system (12), and therefrom read real-time quality flow and the dry gas real-time quality flow of condensate water, and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analysis obtains the volume fraction of pressing each gas in hot vexed tank (1), and show in calculating and display system (12).
2. device according to claim 1, is characterized in that, described device also comprises air pump (10), and temperature, pressure are connected air pump (10) with flow sensor (7) by the 3rd air entraining pipe (3).
3. device according to claim 1 and 2, is characterized in that, calculating and display system are Computer display platform.
4. according to the device one of claim 1-3 Suo Shu, it is characterized in that, described valve is electric control valve (2).
5. the device adopting one of claim 1-4 described, to there being a method of pressing hot sulks Body components on-line monitoring, is characterized in that, comprises the steps:
(1) there being the gas outlet upper shed of pressure hot vexed tank (1), aperture is regulated to draw sample gas by valve (2);
(2) sample gas is through condenser (4) condensation dehydration, the water vapor removed in sample gas obtains dry gas, condensate water is obtained after water vapor condensation, condensate water flows into water tank (5), by the mass sensor (6) that water tank (5) bottom is installed, condensate quality monitoring result is sent to PLC control system (11) by mass sensor, calculates the real-time quality flow of condensate water; (PLC control system shows the real-time quality flow calculating condensate water)
(3) temperature, pressure and the flow of removing the dry gas after water vapor is measured by temperature, pressure and flow sensor (7), and monitoring result is sent to PLC control system (11), calculate the real-time quality flow of dry gas; (PLC control system shows the real-time quality flow calculating dry gas)
(4) the 3rd air entraining pipe side spending tracheae (8) after temperature, pressure and flow sensor, gas analyzer (9) extracts dry gas from this bronchus and carries out constituent analysis, obtain each gas composition of dry gas and the volume fraction of each gas, and analysis result is sent to calculating and display system (12); (numerical signal of the volume fraction of each gas through signal transacting, enter middle control and in PC interface display)
(5) calculating is connected PLC control system (11) with display system (12), and the dry gas real-time quality flow in the real-time quality flow of condensate water from its database in read step (2) and step (3), and in conjunction with each gas composition of dry gas and the volume fraction of each gas, analysis obtains the volume fraction of pressing each gas in hot vexed tank (1), and shows in calculating and display system (12).
6. method according to claim 5, it is characterized in that: described device also comprises air pump (10), temperature, pressure are connected air pump (10) with flow sensor (7) by the 3rd air entraining pipe (3), in later stage tank during insufficient pressure, booster air pump extracts sample gas; And unnecessary sample gas is discharged through air entraining pipe and air pump.
7. the method according to claim 5 or 6, is characterized in that: after once hot vexed process terminates, the water in emptying water tank.
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Cited By (4)
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| CN105039614A (en) * | 2015-08-25 | 2015-11-11 | 中冶节能环保有限责任公司 | Combustible gas safety monitoring and controlling device and method for steel slag waste heat pressure hot disintegration |
| CN107063371A (en) * | 2017-03-01 | 2017-08-18 | 榆林学院 | A kind of device and measuring method for measuring steam and on-condensible gas flow |
| CN111154932A (en) * | 2020-01-06 | 2020-05-15 | 中冶东方工程技术有限公司 | Mobile cover vehicle and treatment method for water-containing dust in steel slag hot disintegration process |
| CN113466284A (en) * | 2021-06-11 | 2021-10-01 | 中核坤华能源发展有限公司 | Direct condensation type geothermal fluid vapor-liquid ratio measuring system |
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