CN103424301A - Constant-temperature device keeping state of gaseous samples to be tested stable in washing process - Google Patents
Constant-temperature device keeping state of gaseous samples to be tested stable in washing process Download PDFInfo
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- CN103424301A CN103424301A CN2012101617067A CN201210161706A CN103424301A CN 103424301 A CN103424301 A CN 103424301A CN 2012101617067 A CN2012101617067 A CN 2012101617067A CN 201210161706 A CN201210161706 A CN 201210161706A CN 103424301 A CN103424301 A CN 103424301A
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Abstract
Provided is a constant-temperature device keeping state of gaseous samples to be tested stable in washing process. The device is composed of three parts: a washing water pipeline is arranged in a steam pipeline and then is wound to be disk-like. Washing water heated. The heated washing water enters into a washing tank. A self-operated temperature regulating valve is arranged on the washing water heating steam pipeline. A temperature bag is arranged in the washing water in the washing tank to adjust the temperature of the washing water. The above two devices are arranged in a heat insulated box body. In addition, A steam heating disk pipe, a self-operated temperature regulating valve, a temperature bag of the self-operated temperature regulating valve are arranged in the heat insulated box. The temperature of the heat insulated box body and the temperature of the washing water in the washing tank are controlled to be the same. The constant-temperature device always keeps the temperature of the gaseous samples at the setting temperature +/-5 DEG C in the washing process and in a sample transmission pipelines before and after washing. The gaseous samples do not condense or self-aggregate before and after washing. The component contents of the gaseous samples into an analysis meter are as same as the component contents in a process device.
Description
Technical field
The present invention relates to keep in stable condition a kind of thermostat in the tested sample water-washing process of gaseous state, specifically, relate in petrochemical production process and contain high temperature autohemagglutination, cryogenic condensation simultaneously, analysis meter is kept to the in stable condition thermostat of gaseous sample in gaseous sample test process harmful and soluble in water.
Background technology
In prior art, typical gaseous sample water-washing process heating and temperature-controlled process mainly are comprised of steam flow control valve, steam heating coil, thermal-insulating body.By the steam regulation flow control valve, regulate by the quantity of steam of steam heating coil, temperature in the heat tracing casing, complete the companion's heat to washing pool.
The problem that prior art exists has three aspects:
The one, the heating-up temperature in thermal-insulating body changes, and can not realize the constant temperature in thermal-insulating body.Prior art is to regulate heating-up temperature in casing by the manual adjustments flow adjusting valve for steam, when environment temperature or vapor pressure change, and heating-up temperature or rising in thermal-insulating body, or reduce.
The 2nd, when the heating-up temperature in thermal-insulating body is elevated to easy autohemagglutination composition and starts the temperature of autohemagglutination, the continuous accumulation of the autopolymer of generation will be stopped up the gaseous sample transfer line, cause the process analysis procedure analysis interruption.
The 3rd, the heating-up temperature in thermal-insulating body is very little to companion's heat effect of gaseous sample gaseous sample water-washing process temperature in washing pool, the water-washing process of gaseous sample is to carry out under the supply temperature of washings, in gaseous sample, the higher boiling composition just is condensate in washings, causes process analysis procedure analysis distortion as a result.
Summary of the invention
The objective of the invention is to overcome the deficiency that prior art exists, proposing to keep the in stable condition a kind of thermostat of gaseous sample in water-washing process, is to be widely used in gaseous sample in the industries such as petrochemical complex, metallurgy, pharmacy, electric power just can enter the thermostat of process Analyzer after must washing under definite constant temperature.
Purpose of the present invention has two aspects:
The one, avoid the gaseous sample distortion, the gaseous sample after making to wash is except removing water-soluble objectionable impurities, and the gaseous sample component content should be consistent with the component content in its process unit, guarantees that the process analysis procedure analysis data are accurate.
The 2nd, eliminate the condition that autopolymer produces, and then eliminate the hidden danger that the sample conveying tube line stops up, guarantee that process analysis procedure analysis is reliable.
Technical scheme of the present invention is as follows:
A kind ofly keep in stable condition thermostat in the tested sample water-washing process of gaseous state, as shown in Figure 1, it has a thermal-insulating body, an airtight washing pool is arranged in thermal-insulating body, washing pool have the draft tube of a tested gaseous sample that passes into washing pool bottom and a tested gaseous sample more than the water surface escape pipe, the run-down pipe of washings is arranged and thermometer is installed, keep in stable condition thermostat in tested gaseous sample water-washing process to comprise three part heating constant-temperature equipments:
1. gaseous sample is washed the heating arrangement of front washings: after being arranged in vapour line by the washings pipeline, be coiled into plate-like, vapour line outer wall adiabatic heat-insulation, the reverse flow of washings and steam, space between vapour line inwall and washings pipeline outer wall is the space of vapor stream warp, the heat interchange of washings and steam is undertaken by the tube wall of washings pipeline, and the washings after heating enter washing pool; The effect in the present invention of this device is heated scrub water fast, for washings thermostatic control in the gaseous sample water-washing process provide early stage condition.
2. keep washings thermostat in the gaseous sample water-washing process: according to washing gaseous sample composition, start the low-temperature values of condensation and the high temperature values of beginning autohemagglutination, determine and need constant temperature of washing water value, using this steady temperature value as setting value, select self force type temperature regulating valve, self force type temperature regulating valve is arranged on washings heating steam pipeline, the thermometer bulb of self force type temperature regulating valve is arranged in the washings of washing pool, automatically regulate the aperture of self-operated type steam flow control valve according to the incompressible and principle of expanding with heat and contracting with cold of liquid in thermometer bulb, realize the constant temperature of washings is controlled automatically, temperature of washing water can be controlled at design temperature ± 5 ℃ in, the effect in the present invention of this device is that the temperature of washing water in washing pool is controlled in a relative stationary temperature scope, eliminates the temperature conditions of the condensation of higher boiling composition, easy autohemagglutination composition autohemagglutination.
3. keep the thermal-insulating body thermostat: above-mentioned two parts device is placed in thermal-insulating body, simultaneously, be provided with the thermometer bulb of steam heating coil, self force type temperature regulating valve and self force type temperature regulating valve in thermal-insulating body, the temperature of controlling thermal-insulating body is identical with the temperature of washing water in washing pool (6).
The effect of invention
The one, guarantee procedures system and analyze the reliable and accurate of data.In the sample conveying tube line of gaseous sample before and after water-washing process and washing, the gaseous sample temperature remains in design temperature ± 5 ℃, under this temperature conditions, gaseous sample is before and after water-washing process, also autohemagglutination not of condensation neither, enter consistent in component content and the process unit of sample gas of process Analyzer, the sample conveying tube line is unimpeded, for process Analyzer provides reliable, distortionless sample gas, for the reliability of whole process analysis system provides assurance, for the accuracy of process analysis procedure analysis data provides assurance., with process analysis procedure analysis data accurately, be reliably technological operation optimization, the important operation parameter of ensuring equipment safe and reliable operation.
The 2nd, saved manpower maintenance cost and parts carrying cost.Compared to the prior art, application the present invention, the human cost that at least can save out a maintainer, annual approximately save 8 ~ 100,000 yuan, can save about 15 ~ 200,000 yuan of the maintenance cost of sample preparation parts and chromatogram sample valve and detecting device every year.
The 3rd, for the water-washing process of similar sample provides reliable constant temperature technology and method.For transforming similar having now, exist the equipment of defect that technology and method are provided.
The accompanying drawing explanation
Fig. 1: the present invention keeps the structural representation of thermostat in stable condition in the tested sample water-washing process of gaseous state.
In Fig. 1, the implication of each mark sees the following form:
Embodiment
Embodiment:
As shown in Figure 1, according to definite washings and spin manifold temperature value, select and regulate the setting value of washings heating steam direct-operated regulator 4 and casing heating steam direct-operated regulator 8.
Washings flowmeter 1 is set on washing water inlet pipeline 14, washings heating steam direct-operated regulator 4 is set on washings heating steam source line 16, washings and washings heating steam complete heat interchange in washings steam heater 3, washings after heating enter washing pool 6, the aperture that the temperature that in washing pool 6, the temperature of washings is measured by washings heating steam direct-operated regulator thermometer bulb 5 is regulated washings heating steam direct-operated regulator 4 automatically, make washings reach the steady temperature needed, the temperature value of washings can be estimated by the temperature of washing water meter simultaneously.
The aperture of the temperature automatic control stuff box body heating steam direct-operated regulator 8 that the temperature in casing is measured by casing heating steam direct-operated regulator thermometer bulb 7, control is the quantity of steam to casing heating steam radiator coil tube 9 via casing heating steam source line 15, make temperature in casing reach the steady temperature needed, thereby after making washing pool 6, the front gaseous sample source line 12 of washing, washing, gaseous sample discharge pipe 13 is fully in an isoperibol.Temperature in thermal-insulating body 11 can be by 10 range estimations of spin manifold temperature meter simultaneously.
Gaseous sample is after gaseous sample source line 12 enters in washing pool 6 the constant temperature washing before via washing, then after gaseous sample discharge pipe 13, just completes the constant temperature washing of gaseous sample after washing.
Experimental record
1. specimen composition
2. Preparatory work of experiment
By being arranged on the experimental part in the cabinet of one 2100 (H) * 1000 (W) * 500 (D), complete the Preparatory work of experiment of following step.
1) regulate washings heating steam direct-operated regulator 4, temperature of washing water is set as to 40 ℃.
2) regulate casing heating steam direct-operated regulator 8, the tank-washer temperature is set as to 50 ℃.
3) regulating washings flowmeter 1, is 10NL/H by the washings flow set that enters the washings steam heater.
4) by washings heating steam entrance A, in washings heating steam source line 16, pass into 3kg/cm
2& The low-pressure steam of 143 ℃.
5) by casing heating steam entrance D, at casing heating steam source line 15, pass into 3kg/cm
2& The low-pressure steam of 143 ℃.
6) close the door of thermal-insulating body 11.
7) after the washing, gaseous sample outlet C connects gas chromatograph.
3. thermostatic process
1) by the visual windows of thermal-insulating body 11, observe the indicated temperature of temperature of washing water meter 2, the temperature of washing water in 0.5 hour after washing pond is stabilized to 40 ℃.
2) inspection box thermometer body temperature stabilization to 50 ℃ in thermal-insulating body 11 after 10,1 hours.
4. constant temperature measure of merit
1) pass into the gaseous sample shown in table 1 by gaseous sample entrance B
2) gas chromatograph test result record is as following table
5. test result analysis
1) 1,3-BD(1,3-butadiene), the C-BUTENE(maleic) with the anti-butylene of T-BUTENE() the chromatogram measurement result consistent with the sample composition content before washing.
2) 7.227M% vanishing after washing pool that content Acetonitrile(acetonitrile) is front by washing.
6. experiment conclusion
1) before and after the washing of measurement component, content is consistent, there is no distortion.
2) easily before and after the washing of the content of autohemagglutination composition 1,3-butadiene, do not change, illustrate and do not produce the autohemagglutination phenomenon.
3) the Studies by Chromatography test result vanishing of objectionable impurities acetonitrile, interpret sample has been removed the objectionable constituent acetonitrile fully in water-washing process.
Claims (1)
1. one kind keeps in stable condition thermostat in the tested sample water-washing process of gaseous state, it is characterized in that: it has a thermal-insulating body (11), an airtight washing pool (6) is arranged in thermal-insulating body (11), washing pool (6) has the draft tube (12) of a tested sample of gaseous state that passes into washing pool bottom and the escape pipe (13) of a tested sample of gaseous state more than the water surface, the run-down pipe of washings is arranged and thermometer (2) is installed, keep in stable condition thermostat in the tested sample water-washing process of gaseous state to comprise three part heating constant-temperature equipments:
The heating arrangement of washings before the gaseous sample washing: be coiled into plate-like (3) after being arranged in vapour line by the washings pipeline, vapour line outer wall adiabatic heat-insulation, the reverse flow of washings and steam, space between vapour line inwall and washings pipeline outer wall is the space of vapor stream warp, the heat interchange of washings and steam is undertaken by the tube wall of washings pipeline, and the washings after heating enter washing pool (6);
Keep washings thermostat in the gaseous sample water-washing process: as required, washing gaseous sample composition starts the low-temperature values of condensation and starts the high temperature values of autohemagglutination, determine and need constant temperature of washing water value, using this steady temperature value as setting value, select self force type temperature regulating valve, self force type temperature regulating valve (4) is arranged on washings heating steam pipeline, the thermometer bulb of self force type temperature regulating valve (5) is arranged in the washings of washing pool (6), automatically regulate the aperture of self-operated type steam flow control valve according to the incompressible and principle of expanding with heat and contracting with cold of liquid in thermometer bulb, realize the constant temperature of washings is controlled automatically, temperature of washing water can be controlled at design temperature ± 5 ℃ in,
Keep the thermal-insulating body thermostat: above-mentioned two parts device is placed in thermal-insulating body (11), simultaneously, be provided with the thermometer bulb (7) of steam heating coil (9), self force type temperature regulating valve (8) and self force type temperature regulating valve in thermal-insulating body (11), the temperature of controlling thermal-insulating body is identical with the temperature of washing water in washing pool (6).
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210161706.7A CN103424301B (en) | 2012-05-22 | 2012-05-22 | A kind ofly keep thermostat in stable condition in gaseous state tested sample water-washing process |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210161706.7A CN103424301B (en) | 2012-05-22 | 2012-05-22 | A kind ofly keep thermostat in stable condition in gaseous state tested sample water-washing process |
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| CN103424301A true CN103424301A (en) | 2013-12-04 |
| CN103424301B CN103424301B (en) | 2015-10-14 |
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Citations (7)
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| JPH08122228A (en) * | 1994-10-19 | 1996-05-17 | Mitsubishi Heavy Ind Ltd | Continuous gas sampling device |
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2012
- 2012-05-22 CN CN201210161706.7A patent/CN103424301B/en active Active
Patent Citations (7)
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|---|---|---|---|---|
| JPH08122228A (en) * | 1994-10-19 | 1996-05-17 | Mitsubishi Heavy Ind Ltd | Continuous gas sampling device |
| US5992214A (en) * | 1995-10-30 | 1999-11-30 | European Atomic Energy Community (Euratom) | Method and device for analyzing volatile substances in gases |
| JP2002243599A (en) * | 2001-02-09 | 2002-08-28 | Horiba Ltd | Gas dilution device |
| JP2006090925A (en) * | 2004-09-27 | 2006-04-06 | Hitachi Ltd | Gas introducing device and gas analyzing system |
| CN101880543A (en) * | 2010-07-02 | 2010-11-10 | 沈阳石蜡化工有限公司 | Online cleaning method of deposited salt of tower tray of normal-pressure tower |
| CN201852730U (en) * | 2010-09-19 | 2011-06-01 | 鞍钢股份有限公司 | Pretreatment device for calorific value analyzer |
| CN102559377A (en) * | 2011-08-16 | 2012-07-11 | 中国海洋石油总公司 | Washing tower heating method, biodiesel crude product washing method, and biodiesel preparation method |
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| 周葆青 等: ""半导体厂本地水洗式气体洗涤塔用水回收系统改造"", 《中国科技纵横》 * |
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