CN104502177A - Device and method for treating mixed corrosive gas - Google Patents
Device and method for treating mixed corrosive gas Download PDFInfo
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- CN104502177A CN104502177A CN201410810571.1A CN201410810571A CN104502177A CN 104502177 A CN104502177 A CN 104502177A CN 201410810571 A CN201410810571 A CN 201410810571A CN 104502177 A CN104502177 A CN 104502177A
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Abstract
The invention relates to a device and method for treating mixed corrosive gas. The device and the method can be widely applied to single or mixed corrosive gas experiments for sulfur dioxide gas and hydrogen sulfide gas. The mixed gas experimental device comprises a compressed air delivery device, a mixed gas delivery device, an experimental box main body, an air conditioning device, a control device, a residual gas filter chamber and a protection device; mixed gas with certain concentration is continuously introduced into a box body with a specific volume, a material or a product is subjected to corrosion experiments under a condition that concentration, temperature and relative humidity are constant, and the destruction degree of the material or the product can recur in a certain time range. The device can be used for checking the mixed gas corrosion resistance of the material and the protective layer thereof, comparing with process quality of similar protective layers, and checking the mixed gas corrosion resistance of certain products.
Description
Technical field
The invention belongs to a kind of chemical engineering experiment equipment technical field, relate to a kind of device and method processing hybrid corrosion gas.
Background technology
Mixed gas experiment is a kind of comparatively common chemical engineering experiment, and experiment must meet the requirement of flowing gas corrosion test, carries out the etchant gas tests such as independent or mixed gas for sulfur dioxide gas, hydrogen sulfide gas.During experiment, continue to import certain density mixed gas at the box house of specified volume, when making concentration, temperature, relative humidity constant, corrosion test is carried out to material or product, the destructiveness that reproduction material or product suffer within the scope of certain hour.The mixed gas that the indoor environment that equipment is mainly used in work of determining or storage exists is on the impact corroded by these mixed gas of the impact of electric and electronic product element, equipment and material, particularly contact element and web member.Mixed gas experimental facilities can be assembled into a subsystem respectively or be assembled into a complete equipment, according to the information given by the test of flowing mixed gas corrosion device, can mutually compare on the basis of corrosion resistance, help the selection carrying out material, manufacturing process and element design.
Summary of the invention
The invention provides a kind of device processing hybrid corrosion gas.
The technological means that technical solution problem of the present invention adopts is:
Process a device for hybrid corrosion gas, comprise compressed air delivery device, mixed gas delivery device, experimental box main body, aircondition, control device, residual gas filter chamber and protective device.
Compressed air delivery device comprises compressed-air filter, pressurized air pressure regulator, pressurized air Controlling solenoid valve, pressurized air air flowmeter;
Etchant gas conveying device comprises source of the gas, etchant gas reduction valve, etchant gas metering pin valve, etchant gas mass flowmeter and etchant gas washer;
Experimental box main body is divided into gas mixer chamber and sample casing; Sample casing is made up of air-conditioning cabinet and sample chamber, and air-conditioning cabinet is connected with air-conditioning system; Have dividing plate between sample chamber and air-conditioning cabinet, dividing plate has duct, sample chamber is communicated with air-conditioning cabinet passing hole channel;
Aircondition is connected with air-conditioning cabinet, and air-conditioning indoor temperature and humidity adopts external humiture air conditioning cabinet, and have refrigeration system, heating system, humidification system, the environment producing regulation humiture enters air conditioning chamber, and at air conditioning chamber's Inner eycle.Enter mixing chamber mixed gas and purification after air mixing chamber mixing after, enter air conditioning chamber, under suitable humiture environment, enter the lower floor of sample chamber, enter sample chamber by the pore between the levels of sample chamber.The warming and humidifying element that air conditioning chamber's refrigeration system adopts is titanium heating tube, corrosion-resistant, and long service life heat temperature raising is fast, and humiture is evenly distributed.The refrigeration system of equipment is arranged on the bottom of equipment, mainly plays cooling when summer uses and constant temperature and dehumidifying.
Control device designs on the right side of casing, and be arranged separately in independently in testing laboratory, other equipment or instrument must not be laid in indoor.After general device places, again that equipment and manipulation is spaced apart with glass, so both ensure that the personal safety of staff, again can by the Test condition in the real-time Control Room of glass.It can realize following functions: can realize humiture and automatically control; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Control each gas pressure reducer; Control various anti-corrosion electromagnetic valve;
Residual gas filter chamber comprises lye tank, steam separation chamber and charcoal absorption room, can fast and effeciently by gas filtration remaining in casing after off-test, and the pH value of residual air is alkalescent, can not pollute air, easy to operate.
Airborne protective device comprises integral device overtemperature, blower fan overheating protection, integral device loss phase/anti-phase, and refrigeration system is transshipped, refrigeration unit superpressure, integral device timing, and other also has electric leakage, runs instruction, the protection such as auto stop after fault alarm.
The device method of work of above-mentioned process seepage etchant gas is as follows:
Three tunnels are divided into: a compressed air transformer in road is connected to the gas hole between double-deck door made of tempered glass from compressed-air filter pressurized air out, enter the lye tank of gas filter after the one compressed air transformer in tunnel, after the compressed air transformer in last road, enter pressurized air Controlling solenoid valve, pressurized air enters etchant gas mixing chamber and mixed gas mixing through air flowmeter.
Etchant gas out controls to enter etchant gas purge chamber by mass flowmeter through corrosion-proof solenoid valve again from steel cylinder afterwards after decompression, filtering material, enters blending bin body after the saxol cleaning through etchant gas purge chamber.
Gas mixer chamber adopts double-deck door made of tempered glass, has air blowing pore and air-breathing pore between two-layer door made of tempered glass; First door made of tempered glass adopts silicone rubber seal, does not make mixed gas excessive; Between door made of tempered glass and second leakproof door made of tempered glass, there is air blowing pore below and both sides, and there is exhaust pore top; Exhaust pore is connected to the lye tank of residual gas filter chamber.Air blowing pore adopts pressurized air to blow, even if there is a little Leakage Gas, enters the lye tank of residual gas filter chamber after the gas of leakage also can be blown into air-breathing pore by pressurized air, ensures safety.
The mixed gas entering mixing casing enters the shunt conduit of the bottom half of sample chamber together with the humiture air in air-conditioning cabinet, equably from the duct between the levels of sample chamber through entering sample chamber.
Mixed gas completes after test mission through sample, namely residual gas filtrator is entered from the upper pipe of sample chamber, in filtrator, the gas-filtering device (activated carbon chamber) of alkali lye spray chamber and adsorption combined can fast and effeciently by gas filtration remaining in casing after off-test, the pH value of residual air is alkalescent, can not pollute air, easy to operate.After condensate water a small amount of in casing is collected, can focus on.
Equipment of the present invention can do the mixed gas tests of sulphuric dioxide, sulfuretted hydrogen, nitrogen dioxide, chlorine four kinds of gases, also can do the pure gas corrosion test of wherein a certain gas, have good market outlook.
Accompanying drawing explanation
Fig. 1 is the structural representation of native system.
Fig. 2 is mixed gas corrosion test chamber front view (FV).
Tu3Shi testing laboratory filtration unit schematic diagram.
In figure: 1-1 tri-overlaps compression air transformer; 1-2 compressed-air filter; 1-3 sulfur dioxide gas; 1-4 nitrogen dioxide gas; 1-5 hydrogen sulfide gas; 1-6 chlorine gas; 1-7 sulfur dioxide gas reduction valve; 1-8 nitrogen dioxide gas reduction valve; 1-9 hydrogen sulfide gas reduction valve; 1-10 chlorine gas pressure reducer; 1-11 tetra-overlaps etchant gas and retains needle-valve; 1-12 tetra-overlaps etchant gas mass flowmeter; 1-13 tetra-overlaps etchant gas washer; 1-14 solenoid valve; 1-15 air flow meter; 1-16 pressurized air enters in the middle of twice glass door; 1-17 pressurized air enters casing gas filter; 1-18 pressurized air enters etchant gas mixing chamber; 1-19 etchant gas mixing chamber; 1-20 lye tank; 1-21 steam separation chamber; 1-22 activated carbon chamber; Outside 1-23 exhaust removal chamber; 1-24 temperature and humidity regulation room; 1-25 humidifier; 1-26 gas buffer plate; 1-27 sample chamber; Glass door in 1-28; The outer glass door of 1-29; 1-30 circulation wind wheel; 1-31 well heater; 1-32 refrigerating evaporator; 1-33 mixed gas enters sample chamber; 1-34 circulating fan; 2-1 glass door sealing strip; 2-2 glass door installation connecting element; 2-3 glass door lock; 2-4 plant bottom case; 2-5 running fix castor; 2-6 control operation instrument and switch; 2-7 puzzle safety lock; 10-1 pressurized air enters; 10-2 alkali lye atomizer; 10-3 testing laboratory gas to be filtered enters; 10-4 alkali lye; 10-5 steam separation chamber; 10-6 activated carbon chamber; Alkali lye after exhaust air chamber 10-8 after 10-7 filters is separated gets back to alkali lye room; The anticorrosion waste discharge blower fan of 10-9; 10-10 waste gas outlet; 10-11 audible-visual annunciator; 10-12 tetra-kinds of etchant gas detection probe.
Embodiment
Embodiments of the invention are described in detail below in conjunction with technical scheme and accompanying drawing.
Experiment four kinds of mixed gas concentrations of the embodiment of the present invention and correlation values: sulfur dioxide concentration (200-500) × 10
-9v0L VOL; Concentration of hydrogen sulfide: (10-100) × 10
-9v0L VOL; Content of nitrogen dioxide: 200 × 10
-9v0L VOL; Chlorine gas concentration: (10-20) × 10
-9v0L VOL; Adopt steel cylinder method, gas concentration measurement is by the mode of formulae discovery volume ratio, and recycling mass flowmeter measures.
The control system of the embodiment of the present invention adopts TEMI Temperature and Humidity Control instrument, and giant-screen-liquid crystal display programmable microcomputer PID control SSR exports operation, super large lcd touch screen picture, and screen is simple to operate, and formula editor is easy; Precision: 0.1 DEG C (indication range); Resolution: ± 0.1 DEG C; Temperature sensing sensor: PT100 platinum resistance temperature detector; Control mode: thermal equilibrium conditioning mode, all electrical equipment all adopts (Schneider) series of products; Temperature and Humidity Control adopts P.I.D+S.S.R system same frequency road cooperation control; There is the function of auto computing, humiture change condition can be revised immediately, make Temperature and Humidity Control more precise and stable; Controller operation interface establishes Chinese and English available, real-time motion curve map can have by screen display the capacity that 100 groups of formulas often organize 100 sections, every section 999 steps capable of circulation, every section of time setting maximal value is after 99 hours 59 points of data and test condition input, controller has fluorescent screen lock function, avoids artificial touch and shuts down; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Controller has the automatic screensaver functions in fluorescent screen, better protects liquid crystal display (make its life-span more permanent) under long-play state.The digital display preserving gas mass flowmeter of the various gas of indoor outfit, Automated condtrol; Be equipped with each gas pressure reducer; Import solenoid valve and air oil-water separator; Various anti-corrosion electromagnetic valve; Perform components and parts: Schneider A.C. contactor, miniature relay, solid-state relay.
Refrigeration and dehumidification system structure as follows: compressor: the safe health 1 of totally-enclosed France is overlapped, and can keep temperature 25 degree, humidity 75% when summer is worked; Refrigeration modes: air-cooled; Cold-producing medium: R404A; Total system pipeline is all made ventilation pressurization 48H and to be stopped leakage in the roof test; Heat, cooling system is completely independent; Inner-spiral type refrigerant copper pipe; Slope-based evaporator; Device for drying and filtering, cold medium flux form, repairing valve, oil separator, solenoid valve, surge drum all adopt import original part.
The shell liner material of equipment is corrosion resistant type PVC plastic sheet material, does not react, do not absorb several mixed gas, do not affect test findings with gases to be measured such as sulfur dioxide gas, hydrogen sulfide gas, nitrogen dioxide gas, chlorine gases.Internal and external pressure balance during equipment work, mixed gas at the uniform velocity flows in casing.The case top of equipment adopts 120 degree of best drift angles, and inwall and other position have the generation equipment of condensate water in process of the test, and condensate water can not drop onto on sample affects test findings.Casing adopts import PVC plastic flitch to cool aftershaping again through hot mastication, piece between plate with plate becomes 90 degree of right angles after plane milling, adopt the method that high temperature welding gun molten plastic welding wire is filled up again, more firm through cooled weld seam, the piece of whole casing round and smooth smooth, body structure is compact, outward appearance is glossy.
The chamber door material of super large is tempered glass, corrosion-resistant silicone rubber seal, and corrosion-resistant equally, easy cleaning, nothing are revealed.Clearly can observe indoor Test condition from outside and do not affect test findings in process of the test.Chamber door and casing adopt the potent sealing of corrosion resistant silicon rubber, prevent gas excessive, thus affect miscellaneous equipment in test findings and corroding chamber, the injury that even may cause test operation personnel.
Various auxiliary accessories facility is similarly corrosion resistant type, reasonable in design.The chamber door material of super large is double-deck tempered glass, corrosion-resistant silicone rubber seal, and corrosion-resistant equally, easy cleaning, nothing are revealed.Clearly can observe indoor Test condition from outside and do not affect test findings in process of the test.Chamber door and casing adopt the potent sealing of corrosion resistant silicon rubber, prevent gas excessive, thus affect miscellaneous equipment in test findings and corroding chamber, the injury that even may cause test operation personnel.
Casing heating adopts titanium well heater, and quick heating, humiture is evenly distributed.
Specimen holder, by national standard design, also can adopt hook mode.
As shown in drawings, three cover compression air transformer 1-1, compressed-air filter 1-2, sulfur dioxide gas 1-3, nitrogen dioxide gas 1-4, hydrogen sulfide gas 1-5, chlorine gas 1-6, sulfur dioxide gas reduction valve 1-7, nitrogen dioxide gas reduction valve 1-8, hydrogen sulfide gas reduction valve 1-9, chlorine gas pressure reducer 1-10, four cover etchant gases retain needle-valve 1-11, four cover etchant gas mass flowmeter 1-12, four cover etchant gas washer 1-13, solenoid valve 1-14 and air flow meter 1-15, and each several part connects and composes mixed gas delivery system successively.
Pressurized air enters 1-16 in the middle of twice glass door respectively, enters casing gas filter 1-17, enters etchant gas mixing chamber 1-18, and etchant gas mixes at mixing chamber 1-19.
Residual gas enters steam separation chamber 1-21 again after entering lye tank 1-20, finally enter activated carbon chamber 1-22, the outer 1-23 of last exhaust removal chamber.
Temperature and humidity regulation room 1-24 and 1-25 humidifier carry out temperature regulation and control humiture; Circulation wind wheel 1-30 and circulating fan 1-34 provides recirculating air, ensures continual air supplying.
Well heater 1-31 is as firing equipment, and refrigerating evaporator 1-32 is as refrigeration plant.
Gas buffer plate 1-26 is as gas buffer, and interior glass door 1-28 and outer glass door 1-29 forms double-layer glass door.
Various gas is first configured to required concentration as requested, gas from steel cylinder out afterwards through decompression after again through needle-valve to mass flowmeter, enter etchant gas washer, etchant gas mixing chamber is entered after the saxol cleaning of etchant gas washer, enter the shunt conduit of the bottom half of sample chamber again, equably from the duct between the levels of sample chamber through entering sample chamber, circulate together with the humiture air in air-conditioning cabinet.Mixed gas completes after test mission through sample, namely enters residual gas filtrator from the upper pipe of sample chamber.
The first order of filtrator is filtered and is adopted chemical neutralization mode, first the alkali lye configured (general pH value 9-10) is added lye tank, special alkali lye atomizer is installed, atomizer adopts glass material, one end utilizes pressurized air to manufacture air pressure, the other end stretches in alkali lye and draws alkali lye, is sucked out rear rapid atomization by siphon principle alkali lye.Mixed gas through sample is forced to first enter alkali lye spray chamber, and flow through in process and fully contact fusion with fogged lye, namely sour gas is neutralized.
Be that second level steam is separated afterwards, the saturation vapour after neutralization is through steam separation chamber, the second level, and contact with the stainless steel metal pompon of indoor, most steam is condensed into water droplet at once, again falls into lye tank, and gas enters third level filtrator again.
What the third level filtered employing is activated charcoal physisorption principle, and a little sour gas may be had not to be neutralized completely, and design is finally adsorbed through activated charcoal again.Experiment proves, the pH value of residual air is alkalescent, can not pollute air, easy to operate.
After a small amount of condensate water is collected, can focus on.
Claims (2)
1. process a device for etchant gas mixing, comprise compressed air delivery device, mixed gas delivery device, experimental box main body, aircondition, control device, residual gas filter chamber and protective device;
Compressed air delivery device comprises compressed-air filter, pressurized air pressure regulator, pressurized air control electromagnetic relief pressure valve, pressurized air air flowmeter;
Etchant gas conveying device comprises source of the gas, etchant gas electromagnetic relief pressure valve, etchant gas metering pin valve, etchant gas mass flowmeter and etchant gas washer;
Experimental box main body is divided into gas mixer chamber and sample casing; Sample casing is made up of air-conditioning cabinet and sample chamber, and air-conditioning cabinet is connected with air-conditioning system; Have dividing plate between sample chamber and air-conditioning cabinet, dividing plate has duct, sample chamber is communicated with air-conditioning cabinet passing hole channel;
Aircondition is connected with air-conditioning cabinet, and air-conditioning indoor temperature and humidity adopts external humiture air conditioning cabinet, and have refrigeration system, heating system, humidification system, the environment producing regulation humiture enters air conditioning chamber, and at air conditioning chamber's Inner eycle; The warming and humidifying element that air conditioning chamber's refrigeration system adopts is titanium heating tube;
Control device is positioned on the right side of casing, is arranged separately in independently in testing laboratory; It can realize following functions: can realize humiture and automatically control; There is RS-232 or RS-485 telecommunication interface, formula can be designed on computers, monitor process of the test and perform the functions such as automatic switching; Control each gas pressure reducer; Control various anti-corrosion electromagnetic valve;
Residual gas filter chamber comprises lye tank, steam separation chamber and charcoal absorption room, mass flowmeter, can fast and effeciently by gas filtration remaining in casing after off-test, the pH value of residual air is alkalescent, can not pollute air, easy to operate;
Airborne protective device adopts indoor exhaust wind device; The indoor leakage alarm instrument also installing various gas; Integral device overtemperature, blower fan overheating protection, integral device loss phase/anti-phase, refrigeration system is transshipped, refrigeration unit superpressure, integral device timing, and other also has electric leakage, runs instruction, the protection such as auto stop after fault alarm.
2. the method for device process etchant gas mixing according to claim 1, is characterized in that following steps,
Three tunnels are divided into: a compressed air transformer in road is connected to the gas hole between double-deck door made of tempered glass from compressed-air filter pressurized air out, enter the lye tank of gas filter after the one compressed air transformer in tunnel, after the compressed air transformer in last road, enter pressurized air control electromagnetic relief pressure valve, pressurized air air flowmeter enters etchant gas mixing chamber and mixed gas mixing;
Etchant gas out controls to enter etchant gas purge chamber by mass flowmeter through corrosion-proof solenoid valve again from steel cylinder afterwards after decompression, filtering material, enters blending bin body after the saxol cleaning through etchant gas purge chamber; The mixed gas entering mixing casing enters the shunt conduit of the bottom half of sample chamber together with the humiture air in air-conditioning cabinet, equably from the duct between the levels of sample chamber through entering sample chamber;
Gas mixer chamber adopts double-deck door made of tempered glass, has air blowing pore and air-breathing pore between two-layer door made of tempered glass; First door made of tempered glass adopts silicone rubber seal, does not make mixed gas excessive; Between door made of tempered glass and second leakproof door made of tempered glass, there is air blowing pore below and both sides, and there is exhaust pore top; Exhaust pore is connected to the lye tank of residual gas filter chamber; Air blowing pore adopts pressurized air to blow, even if there is a little Leakage Gas, enters the lye tank of residual gas filter chamber after the gas of leakage also can be blown into air-breathing pore by pressurized air, ensures safety;
Mixed gas completes after test mission through sample, namely residual gas filtrator is entered from the upper pipe of sample chamber, in filtrator, the gas-filtering device (activated carbon chamber) of alkali lye spray chamber and adsorption combined can fast and effeciently by gas filtration remaining in casing after off-test, the pH value of residual air is alkalescent, can not pollute air, easy to operate; After condensate water a small amount of in casing is collected, focus on.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN107796678A (en) * | 2017-12-04 | 2018-03-13 | 浙江省安全生产科学研究院 | A kind of gas controlling device for adverse circumstances |
| CN111624152A (en) * | 2020-07-02 | 2020-09-04 | 南京五和试验设备有限公司 | Double-seal mixed gas corrosion test box |
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Effective date of registration: 20220209 Address after: 523000 Building 2, No. 7, Gongye North Road, Songshanhu Park, Dongguan City, Guangdong Province Patentee after: Shenzhen Inspection Group (Dongguan) Quality Technology Service Co.,Ltd. Address before: 211178 No. 10, runshou Road, Binjiang Development Zone, Jiangning District, Nanjing, Jiangsu Province Patentee before: NANJING WUHE TESTING EQUIPMENT Co.,Ltd. |