CN105806986A - Device and method for treating acid gases through wet digestion before heavy metal measurement - Google Patents
Device and method for treating acid gases through wet digestion before heavy metal measurement Download PDFInfo
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- CN105806986A CN105806986A CN201610396210.6A CN201610396210A CN105806986A CN 105806986 A CN105806986 A CN 105806986A CN 201610396210 A CN201610396210 A CN 201610396210A CN 105806986 A CN105806986 A CN 105806986A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N30/00—Investigating or analysing materials by separation into components using adsorption, absorption or similar phenomena or using ion-exchange, e.g. chromatography or field flow fractionation
- G01N30/02—Column chromatography
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- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/38—Removing components of undefined structure
- B01D53/40—Acidic components
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01D—SEPARATION
- B01D53/00—Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols
- B01D53/34—Chemical or biological purification of waste gases
- B01D53/74—General processes for purification of waste gases; Apparatus or devices specially adapted therefor
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- B01D53/78—Liquid phase processes with gas-liquid contact
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Abstract
The invention provides a device and a method for treating acid gases through wet digestion before heavy metal measurement, and relates to a detoxifying treatment technique for volatile acid gases. One end of an acid gas guide tube is positioned in a wild-mouth digestion bottle, and the other end of the acid gas guide tube is positioned in an acid absorption cups. The method includes separating a downward-opening funnel of the acid gas guide tube from an upward-opening funnel of the acid gas guide tube, putting an alkali liquor backflow float plug into the upward-opening funnel of a I-shaped section, and sealing the upward-opening funnel; pouring alkali liquor into the acid absorption cup, putting samples into the wild-mouth digestion bottle, and pouring acid liquor; putting the wild-mouth digestion bottle on an electric heating plate until boiling to enable the atmospheric pressure of the acid gases in the acid gas guide tube to be 1.02-1.05. The device and the method have the advantages that backflow of the alkali liquor into the acid liquor can be prevented automatically or manually, the volatile acid gases in the digestion bottle can flow into the alkali liquor in the acid absorption cup through the acid gas guide tube to be subjected to harmless treatment, and accordingly, the acid gases do not enter the air to pollute the environment.
Description
Technical field
The present invention relates to a kind of Non-toxic treatment technology to strong acid volatilization gas, particularly to chromatograph detect animals and plants converted products heavy metal time, before measuring heavy metal with chromatograph, sample to detected animals and plants converted products, carry out in the Organic substance process of Wet sample with strong acid, the method that the absorption of strong acid volatilization gas, Non-toxic are processed.
Background technology
When detecting the content of beary metal in the light industrial goods that the animals and plants such as food, textile, leather are processed at use for laboratory chromatograph, first carry out in Wet processing method with strong acid, frequently with hot plate, strong acid and sample mixture being heated, keeping electric boiling plate temperature is 210 degrees Celsius of Wets.Electric boiling plate Wet is simple to operate, electric hot plate low price, and instrument condition requires low, common Routine Test Lab, all can adopt.But electric boiling plate Wet uses a large amount of acid, and in heating digestion process, strong acid can become highly acid gas, can evaporate into highly acid gas and be diffused in air after example hydrochloric acid, nitric acid, Fluohydric acid. etc. are heated.These highly acid gas expands to be calculated in air, not only contaminated environment, and is easy to the health of staff is damaged, and the equipment that corrosion experiment is indoor.
Controlling equipment without acid gas, the volatilization of digestion process middle strong acidity gas is too fast, and what affect sample clears up effect, causes that Specimen eliminating is incomplete.
Summary of the invention
In order to avoid the highly acid gas in above-mentioned Wet process is diffused in air, before the present invention provides the heavy metal of a kind of chromatograph detection animals and plants converted products, when use for laboratory strong acid Wet animals and plants processed sample, absorption evaporate into highly acid gas and carries out the harmless process device of acid-base neutralization, and by the method that this device carries out Wet sample, reach the degree that disappears controlling to measure heavy metal sample, reduce the pollution to environment of the highly acid gas.
Present disclosure is:
The device that acid gas is processed by Wet is carried out before determining heavy metals, the wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle 1 and the sour absorption cell 2 of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell 2 of bottle 1, it is characterized in that: also include an acid gas conduit 3, one end of this acid gas conduit 3 is positioned at wide-mouth and clears up among bottle 1, and the other end of this acid gas conduit 3 is positioned among acid absorption cell 2；
This acid gas conduit 3 is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section 4, second segment be Large Diameter Pipeline section 5, the 3rd section be I-shaped section 6；
One end of pipe with small pipe diameter section 4 is positioned at wide-mouth through seal rubber plug 7 after-opening and clears up bottle 1, and the wide-mouth that is blocked in that seal rubber plug 7 seals clears up the bottleneck of bottle 1；The other end of pipe with small pipe diameter section 4 connects with acid flow control valve 8；
One end of Large Diameter Pipeline section 5 connects with acid flow control valve 8, and the other end of Large Diameter Pipeline section 5 is downwardly open funnel structure, i.e. the downwardly open funnel 9 of Large Diameter Pipeline section；
The pipe two ends of I-shaped section 6 are all funnel structure respectively, and the upper end of I-shaped section 6 is I-shaped section upward opening funnel 10, and the lower end of I-shaped section 6 is the downwardly open funnel 11 of I-shaped section；The downwardly open funnel 11 of I-shaped section is positioned among acid absorption cell 2；
The pipe diameter of pipe with small pipe diameter section 4 is less than the pipe diameter of Large Diameter Pipeline section 5, and the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter；
The opening diameter of the downwardly open funnel 9 of Large Diameter Pipeline section is same as the opening diameter of I-shaped section upward opening funnel 10, the downwardly open funnel of Large Diameter Pipeline section 9 becomes anti-alkali liquor refluence fluid reservoir 12 with the closure of openings of I-shaped section upward opening funnel 10, the above of anti-alkali liquor refluence fluid reservoir 12 is Large Diameter Pipeline section 5, anti-alkali liquor refluence fluid reservoir 12 I-shaped section 6 is presented herein below, be placed with an anti-alkali liquor refluence floating blocking 13 at anti-alkali liquor refluence fluid reservoir 12；
Anti-alkali liquor refluence floating blocking 13 includes blocking 14, ball float 15 and counterweight foot 16；Ball float 15 be arranged above with blocking 14, ball float 15 multiple counterweight foot 16 is provided below, the weight of multiple counterweight feet 16 is more than the weight of blocking 14；Anti-alkali liquor flow backwards float blocking 13 can emersion liquid level in a liquid；The top end diameter of blocking 14 is less than the caliber of Large Diameter Pipeline section 5, and the bottom diameter of blocking 14 is more than the caliber of Large Diameter Pipeline section 5.
The method that acid gas is processed by Wet is carried out before determining heavy metals, it is characterised in that:
The apparatus structure that the acid gas that one this method uses processes is as follows:
The wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle 1 and the sour absorption cell 2 of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell 2 of bottle 1, also include an acid gas conduit 3, one end of this acid gas conduit 3 is positioned at wide-mouth and clears up among bottle 1, and the other end of this acid gas conduit 3 is positioned among acid absorption cell 2；
This acid gas conduit 3 is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section 4, second segment be Large Diameter Pipeline section 5, the 3rd section be I-shaped section 6；
One end of pipe with small pipe diameter section 4 is positioned at wide-mouth through seal rubber plug 7 after-opening and clears up bottle 1, and the wide-mouth that is blocked in that seal rubber plug 7 seals clears up the bottleneck of bottle 1；The other end of pipe with small pipe diameter section 4 connects with acid flow control valve 8；
One end of Large Diameter Pipeline section 5 connects with acid flow control valve 8, and the other end of Large Diameter Pipeline section 5 is downwardly open funnel structure, i.e. the downwardly open funnel 9 of Large Diameter Pipeline section；
The pipe two ends of I-shaped section 6 are all funnel structure respectively, and the upper end of I-shaped section 6 is I-shaped section upward opening funnel 10, and the lower end of I-shaped section 6 is the downwardly open funnel 11 of I-shaped section；The downwardly open funnel 11 of I-shaped section is positioned among acid absorption cell 2；
The pipe diameter of pipe with small pipe diameter section 4 is less than the pipe diameter of Large Diameter Pipeline section 5, and the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter；
The opening diameter of the downwardly open funnel 9 of Large Diameter Pipeline section is same as the opening diameter of I-shaped section upward opening funnel 10, the downwardly open funnel of Large Diameter Pipeline section 9 becomes anti-alkali liquor refluence fluid reservoir 12 with the closure of openings of I-shaped section upward opening funnel 10, the above of anti-alkali liquor refluence fluid reservoir 12 is Large Diameter Pipeline section 5, anti-alkali liquor refluence fluid reservoir 12 I-shaped section 6 is presented herein below, be placed with an anti-alkali liquor refluence floating blocking 13 at anti-alkali liquor refluence fluid reservoir 12；
Anti-alkali liquor refluence floating blocking 13 includes blocking 14, ball float 15 and counterweight foot 16；Ball float 15 be arranged above with blocking 14, ball float 15 multiple counterweight foot 16 is provided below, the weight of multiple counterweight feet 16 is more than the weight of blocking 14；Anti-alkali liquor flow backwards float blocking 13 can emersion liquid level in a liquid；The top end diameter of blocking 14 is less than the caliber of Large Diameter Pipeline section 5, and the bottom diameter of blocking 14 is more than the caliber of Large Diameter Pipeline section 5；
It is as follows that the acid gas of two this method processes step:
2.1, downwardly open for Large Diameter Pipeline section funnel 9 is separated with I-shaped section upward opening funnel 10, I-shaped section upward opening funnel 10 is put in alkali liquor refluence floating blocking 13, more downwardly open for Large Diameter Pipeline section funnel 9 is sealed to anti-alkali liquor refluence fluid reservoir 12 with the corresponding adhesive plaster of opening of I-shaped section upward opening funnel 10；
2.2, pipe with small pipe diameter section 4 and Large Diameter Pipeline section 5 are supported with test tube rack；
2.3, in acid absorption cell 2, alkali liquor is poured into；Alkali liquor preferably uses sodium hydroxide solution, and concentration of sodium hydroxide solution is 80 grams per milliliters；
2.4, below downwardly open for the I-shaped section of I-shaped section 6 funnel 11 1-2 centimetre being put among the alkali liquor of acid absorption cell 2, the upper part of the downwardly open funnel 11 of I-shaped section is not put among alkali liquor；The upper part height that the downwardly open funnel 11 of I-shaped section is not put among alkali liquor is 3-10 centimetre；
2.5, the centre bore of one end traverse seal rubber plug 7 of pipe with small pipe diameter section 4, the centre bore of the pipe of pipe with small pipe diameter section 4 and seal rubber plug 7 closely cooperates air tight；
2.6, sample is put into wide-mouth and clear up bottle 1, then after pouring acid solution into；Quickly clear up the bottleneck of bottle 1, closely cooperate air tight with there being the seal rubber plug 7 being inserted with pipe with small pipe diameter section 4 to block wide-mouth；
Sample is the raw materials such as the food in light industrial goods, textile, leather and the product being processed into；
Hydrochloric acid or nitric acid or mass percent concentration that mass percent concentration is 69% that acid solution selects mass percent concentration to be 37% are the Fluohydric acid. of 40%；
Clearing up in bottle 1 at wide-mouth, the mixing ratio of sample and acid solution is 10 milliliters of acid solutions of addition in 0.2 gram～0.5 gram sample.The volume ratio putting into alkali liquor, acid solution and alkali liquor in acid absorption cell 2 is 10 milliliters of acid solutions: 40 milliliters～120 milliliters alkali liquor.
2.7, the acid flow control valve 8 between pipe with small pipe diameter section 4 and Large Diameter Pipeline section 5 is opened a small gap slightly；
2.8, wide-mouth is cleared up bottle 1 to be placed on electric boiling plate and heat to boiling；Electric boiling plate maintenance temperature is 210 degrees Celsius and is heated.
When 2.9, being resolved per sample, the color of acid gas controls the size that acid flow control valve 8 is open, when acid gas color is yellow, acid flow control valve 8 is open less, making acid gas air pressure in acid gas conduit 3 is 1.02～1.05 atmospheric pressure, when Specimen eliminating is complete, acid flow control valve 8 is fully open, electric boiling plate continues heating to the acid solution volatilization clearing up in bottle 1 to wide-mouth completely, stops electric boiling plate heating；Wide-mouth is cleared up the acid gas that the acid solution in bottle 1 evaporates into and is carried out chemical reaction by acid gas conduit 3 with the alkali liquor in acid absorption cell 2 and become saline solution and water, and acid gas does not enter air, free from environmental pollution.
Acid gas in the present invention, sour gas, strong acid escaping gas are all the identical concept, only use different word because describing convenient.
Present invention mainly solves a highly acid collection and confinement of gases to get up to be neutralized with highly basic liquid and react into saline solution and water, make acid gas not enter air, free from environmental pollution.
The device of the present invention connects strong acid liquid with highly basic liquid acid gas conduit 3, for preventing the air pressure change in acid gas conduit 3, cause that highly basic liquid blows back into and among strong acid liquid, produce huge strong breaking reaction, the present invention first acid flow control valve 8, second pipe diameter pipe diameter less than Large Diameter Pipeline section 5 of pipe with small pipe diameter section 4, the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter；3rd with anti-alkali liquor refluence fluid reservoir 12；4th with placing alkali liquor refluence floating blocking 13 in anti-alkali liquor refluence fluid reservoir 12；5th does not put into the upper part height among alkali liquor with the downwardly open funnel 11 of I-shaped section is the technical pattern such as 3-10 centimetre and method can well prevent highly basic liquid from blowing back among strong acid liquid, can practicality so that being neutralized that the technology of reaction highly acid gas has with highly basic liquid.
First with acid flow control valve 8: can manual control with acid flow control valve 8, it is prevented that highly basic liquid blows back among strong acid liquid.
Second pipe diameter pipe diameter less than Large Diameter Pipeline section 5 using pipe with small pipe diameter section 4, the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter: purpose is in that to make the acid gas pressure in pipe with small pipe diameter section 4 more than the acid gas pressure in Large Diameter Pipeline section 5, sour gas is made to be flowed to Large Diameter Pipeline section 5 by pipe with small pipe diameter section 4, keep normal acid gas to process state, also can prevent highly basic liquid from blowing back among strong acid liquid.
3rd with anti-alkali liquor refluence fluid reservoir 12: clear up the highly basic liquid of bottle 1 to wide-mouth for storing to flow backwards from acid absorption cell 2, when anti-alkali liquor refluence fluid reservoir 12 has highly basic liquid, downwardly open for I-shaped section funnel 11 is risen to more than alkali liquor liquid level, and alkali liquor flows back to acid absorption cell 2 automatically.
4th with placing alkali liquor refluence floating blocking 13 in anti-alkali liquor refluence fluid reservoir 12: this is one and is automatically prevented from highly basic liquid and blows back into the technology among strong acid liquid, if it is too fast to blow back into the speed among strong acid liquid at highly basic liquid, or nobody at the scene time, when aqueous alkali flows backwards after in anti-alkali liquor refluence fluid reservoir 12, alkali liquor refluence floating blocking 13 will float to liquid level at highly basic liquid, owing to the weight of multiple counterweight feet 16 is more than the weight of blocking 14, blocking 14 just is flow backwards to float at alkali liquor and is blocked above 13, thus blocking 14 just blocks the pipe of Large Diameter Pipeline section 5, the highly basic liquid making refluence can not enter the pipe of Large Diameter Pipeline section 5, block highly basic liquid and flow back to the road warp among strong acid liquid, highly basic liquid can be automatically prevented from blow back among strong acid liquid.
The 5th upper part height do not put among alkali liquor with the downwardly open funnel of I-shaped section 11 is 3-10 centimetre: make the broad space having 3-10 centimetre high in acid absorption cell 2 between liquid level and the pipe of I-shaped section 6 of strong acid liquid, when in acid absorption cell 2, the volume of highly basic liquid increases few, highly basic liquid can not enter among the pipe of I-shaped section 6, also can prevent highly basic liquid from blowing back among strong acid liquid.Additionally, I-shaped section downwardly open funnel 11 structure also add the contact surface of sour gas and highly basic liquid, the initial contact surface preventing bronsted lowry acids and bases bronsted lowry is little, is producing huge strong chemical reaction in local, it is prevented that the volume of localized liquid quickly increases and causes highly basic liquid to blow back among strong acid liquid.
Advantages of the present invention: designed by multiple technologies, can automatically and manually carry out preventing highly basic liquid from blowing back among strong acid liquid, make the acid Volatile Gas physical ability clearing up in bottle be flowed among the alkaline solution in acid absorption cell by acid gas conduit, carry out harmless treatment.When making mensuration heavy metal sample, clearing up in animals and plants processed sample process, harmful gas i.e. acid volatilization gas does not enter air, free from environmental pollution.In a word, there is the highly basic liquid that prevents of the present invention to blow back into the technology among strong acid liquid, could be undertaken clearing up sample by the mode collected with harmless treatment acidity volatilization gas；Otherwise still can only entering air with acid volatilization gas, air-polluting mode carries out clearing up sample.
Accompanying drawing explanation
Fig. 1, the present invention schematic diagram；
In figure, 1 be wide-mouth clear up bottle, 2 be acid absorption cell, 3 be acid gas conduit, 4 be pipe with small pipe diameter section, 5 be Large Diameter Pipeline section, 6 be I-shaped section, 7 be seal rubber plug, 8 be acid flow control valve, 9 be the downwardly open funnel of Large Diameter Pipeline section, 10 be I-shaped section upward opening funnel, 11 be the downwardly open funnel of I-shaped section, 12 be anti-alkali liquor refluence fluid reservoir, 13 be anti-alkali liquor flow backwards float blocking, 14 be blocking head, 15 be ball float, 16 be counterweight foot.
Detailed description of the invention
The device that acid gas is processed by Wet is carried out before embodiment 1, determining heavy metals
Such as Fig. 1, the device that acid gas is processed by Wet is carried out before determining heavy metals, the wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle 1 and the sour absorption cell 2 of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell 2 of bottle 1, also include an acid gas conduit 3, one end of this acid gas conduit 3 is positioned at wide-mouth and clears up among bottle 1, and the other end of this acid gas conduit 3 is positioned among acid absorption cell 2；
This acid gas conduit 3 is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section 4, second segment be Large Diameter Pipeline section 5, the 3rd section be I-shaped section 6；
One end of pipe with small pipe diameter section 4 is positioned at wide-mouth through seal rubber plug 7 after-opening and clears up bottle 1, and the wide-mouth that is blocked in that seal rubber plug 7 seals clears up the bottleneck of bottle 1；The other end of pipe with small pipe diameter section 4 connects with acid flow control valve 8；
One end of Large Diameter Pipeline section 5 connects with acid flow control valve 8, and the other end of Large Diameter Pipeline section 5 is downwardly open funnel structure, i.e. the downwardly open funnel 9 of Large Diameter Pipeline section；
The pipe two ends of I-shaped section 6 are all funnel structure respectively, and the upper end of I-shaped section 6 is I-shaped section upward opening funnel 10, and the lower end of I-shaped section 6 is the downwardly open funnel 11 of I-shaped section；The downwardly open funnel 11 of I-shaped section is positioned among acid absorption cell 2；
The pipe diameter of pipe with small pipe diameter section 4 is less than the pipe diameter of Large Diameter Pipeline section 5, and the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter；
The opening diameter of the downwardly open funnel 9 of Large Diameter Pipeline section is same as the opening diameter of I-shaped section upward opening funnel 10, the downwardly open funnel of Large Diameter Pipeline section 9 becomes anti-alkali liquor refluence fluid reservoir 12 with the closure of openings of I-shaped section upward opening funnel 10, the above of anti-alkali liquor refluence fluid reservoir 12 is Large Diameter Pipeline section 5, anti-alkali liquor refluence fluid reservoir 12 I-shaped section 6 is presented herein below, be placed with an anti-alkali liquor refluence floating blocking 13 at anti-alkali liquor refluence fluid reservoir 12；
Anti-alkali liquor refluence floating blocking 13 includes blocking 14, ball float 15 and counterweight foot 16；Ball float 15 be arranged above with blocking 14, ball float 15 multiple counterweight foot 16 is provided below, the weight of multiple counterweight feet 16 is more than the weight of blocking 14；Anti-alkali liquor flow backwards float blocking 13 can emersion liquid level in a liquid；The top end diameter of blocking 14 is less than the caliber of Large Diameter Pipeline section 5, and the bottom diameter of blocking 14 is more than the caliber of Large Diameter Pipeline section 5.
The method that acid gas is processed by Wet is carried out before embodiment 2, determining heavy metals
Such as Fig. 1, before determining heavy metals, carry out the method that acid gas is processed by Wet
The apparatus structure that the acid gas that one this method uses processes is as follows:
The wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle 1 and the sour absorption cell 2 of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell 2 of bottle 1, also include an acid gas conduit 3, one end of this acid gas conduit 3 is positioned at wide-mouth and clears up among bottle 1, and the other end of this acid gas conduit 3 is positioned among acid absorption cell 2；
This acid gas conduit 3 is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section 4, second segment be Large Diameter Pipeline section 5, the 3rd section be I-shaped section 6；
One end of pipe with small pipe diameter section 4 is positioned at wide-mouth through seal rubber plug 7 after-opening and clears up bottle 1, and the wide-mouth that is blocked in that seal rubber plug 7 seals clears up the bottleneck of bottle 1；The other end of pipe with small pipe diameter section 4 connects with acid flow control valve 8；
One end of Large Diameter Pipeline section 5 connects with acid flow control valve 8, and the other end of Large Diameter Pipeline section 5 is downwardly open funnel structure, i.e. the downwardly open funnel 9 of Large Diameter Pipeline section；
The pipe two ends of I-shaped section 6 are all funnel structure respectively, and the upper end of I-shaped section 6 is I-shaped section upward opening funnel 10, and the lower end of I-shaped section 6 is the downwardly open funnel 11 of I-shaped section；The downwardly open funnel 11 of I-shaped section is positioned among acid absorption cell 2；
The pipe diameter of pipe with small pipe diameter section 4 is less than the pipe diameter of Large Diameter Pipeline section 5, and the pipe diameter of Large Diameter Pipeline section 5 is less than or equal to I-shaped section 6 pipe diameter；
The opening diameter of the downwardly open funnel 9 of Large Diameter Pipeline section is same as the opening diameter of I-shaped section upward opening funnel 10, the downwardly open funnel of Large Diameter Pipeline section 9 becomes anti-alkali liquor refluence fluid reservoir 12 with the closure of openings of I-shaped section upward opening funnel 10, the above of anti-alkali liquor refluence fluid reservoir 12 is Large Diameter Pipeline section 5, anti-alkali liquor refluence fluid reservoir 12 I-shaped section 6 is presented herein below, be placed with an anti-alkali liquor refluence floating blocking 13 at anti-alkali liquor refluence fluid reservoir 12；
Anti-alkali liquor refluence floating blocking 13 includes blocking 14, ball float 15 and counterweight foot 16；Ball float 15 be arranged above with blocking 14, ball float 15 multiple counterweight foot 16 is provided below, the weight of multiple counterweight feet 16 is more than the weight of blocking 14；Anti-alkali liquor flow backwards float blocking 13 can emersion liquid level in a liquid；The top end diameter of blocking 14 is less than the caliber of Large Diameter Pipeline section 5, and the bottom diameter of blocking 14 is more than the caliber of Large Diameter Pipeline section 5；
It is as follows that the acid gas of two this method processes step:
2.1, downwardly open for Large Diameter Pipeline section funnel 9 is separated with I-shaped section upward opening funnel 10, I-shaped section upward opening funnel 10 is put in alkali liquor refluence floating blocking 13, more downwardly open for Large Diameter Pipeline section funnel 9 is sealed to anti-alkali liquor refluence fluid reservoir 12 with the corresponding adhesive plaster of opening of I-shaped section upward opening funnel 10；
2.2, pipe with small pipe diameter section 4 and Large Diameter Pipeline section 5 are supported with test tube rack；
2.3, in acid absorption cell 2, alkali liquor is poured into；Alkali liquor preferably uses sodium hydroxide solution, and concentration of sodium hydroxide solution is 80 grams per milliliters；
2.4, below downwardly open for the I-shaped section of I-shaped section 6 funnel 11 1-2 centimetre being put among the alkali liquor of acid absorption cell 2, the upper part of the downwardly open funnel 11 of I-shaped section is not put among alkali liquor；The upper part height that the downwardly open funnel 11 of I-shaped section is not put among alkali liquor is 3-10 centimetre；
2.5, the centre bore of one end traverse seal rubber plug 7 of pipe with small pipe diameter section 4, the centre bore of the pipe of pipe with small pipe diameter section 4 and seal rubber plug 7 closely cooperates air tight；
2.6, sample is put into wide-mouth and clear up bottle 1, then after pouring acid solution into；Quickly clear up the bottleneck of bottle 1, closely cooperate air tight with there being the seal rubber plug 7 being inserted with pipe with small pipe diameter section 4 to block wide-mouth；
Sample is the raw materials such as the food in light industrial goods, textile, leather and the product being processed into；
Hydrochloric acid or nitric acid or mass percent concentration that mass percent concentration is 69% that acid solution selects mass percent concentration to be 37% are the Fluohydric acid. of 40%；
Clearing up in bottle 1 at wide-mouth, the mixing ratio of sample and acid solution is 10 milliliters of acid solutions of addition in 0.2 gram～0.5 gram sample.The volume ratio putting into alkali liquor, acid solution and alkali liquor in acid absorption cell 2 is 10 milliliters of acid solutions: 40 milliliters～120 milliliters alkali liquor.
2.7, the acid flow control valve 8 between pipe with small pipe diameter section 4 and Large Diameter Pipeline section 5 is opened a small gap slightly；
2.8, wide-mouth is cleared up bottle 1 to be placed on electric boiling plate and heat to boiling；Keep temperature to be 210 degrees Celsius to be heated.
When 2.9, being resolved per sample, the color of acid gas controls the size that acid flow control valve 8 is open, when acid gas color is yellow, acid flow control valve 8 is open less, making acid gas air pressure in acid gas conduit 3 is 1.02～1.05 atmospheric pressure, when Specimen eliminating is complete, acid flow control valve 8 is fully open, electric boiling plate continues heating to the acid solution volatilization clearing up in bottle 1 to wide-mouth completely, stops electric boiling plate heating；Wide-mouth is cleared up the acid gas that the acid solution in bottle 1 evaporates into and is carried out chemical reaction by acid gas conduit 3 with the alkali liquor in acid absorption cell 2 and become saline solution and water, and acid gas does not enter air, free from environmental pollution.
Claims (2)
1. before determining heavy metals, carry out the device that acid gas is processed by Wet, the wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle (1) and the sour absorption cell (2) of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell (2) of bottle (1), it is characterized in that: also include an acid gas conduit (3), one end of this acid gas conduit (3) is positioned at wide-mouth and clears up among bottle (1), and the other end of this acid gas conduit (3) is positioned among acid absorption cell (2)；
This acid gas conduit (3) is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section (4), second segment be Large Diameter Pipeline section (5), the 3rd section be I-shaped section (6)；
One end of pipe with small pipe diameter section (4) is positioned at wide-mouth through seal rubber plug (7) after-opening and clears up bottle (1), and what seal rubber plug (7) sealed be blocked in wide-mouth clears up the bottleneck of bottle (1)；The other end of pipe with small pipe diameter section (4) connects with acid flow control valve (8)；
One end of Large Diameter Pipeline section (5) connects with acid flow control valve (8), and the other end of Large Diameter Pipeline section (5) is downwardly open funnel structure, i.e. the downwardly open funnel of Large Diameter Pipeline section (9)；
The pipe two ends of I-shaped section (6) are all funnel structure respectively, and the upper end of I-shaped section (6) is I-shaped section upward opening funnel (10), and the lower end of I-shaped section (6) is the downwardly open funnel of I-shaped section (11)；The downwardly open funnel of I-shaped section (11) is positioned among acid absorption cell (2)；
The pipe diameter of pipe with small pipe diameter section (4) is less than the pipe diameter of Large Diameter Pipeline section (5), and the pipe diameter of Large Diameter Pipeline section (5) is less than or equal to I-shaped section (6) pipe diameter；
The opening diameter of the downwardly open funnel of Large Diameter Pipeline section (9) is same as the opening diameter of I-shaped section upward opening funnel (10), the downwardly open funnel of Large Diameter Pipeline section (9) becomes anti-alkali liquor refluence fluid reservoir (12) with the closure of openings of I-shaped section upward opening funnel (10), the above of anti-alkali liquor refluence fluid reservoir (12) is Large Diameter Pipeline section (5), anti-alkali liquor refluence fluid reservoir (12) I-shaped section (6) is presented herein below, be placed with anti-alkali liquor anti-alkali liquor refluence fluid reservoir (12) and flow backwards blocking (13) of floating；
Anti-alkali liquor refluence floating blocking (13) includes blocking head (14), ball float (15) and counterweight foot (16)；Ball float (15) be arranged above with blocking head (14), ball float (15) multiple counterweight foot (16) is provided below, the weight of multiple counterweight feet (16) more than blocking head (14) weight；Anti-alkali liquor flow backwards float blocking (13) can emersion liquid level in a liquid；The top end diameter of blocking head (14) is less than the caliber of Large Diameter Pipeline section (5), and the bottom diameter of blocking head (14) is more than the caliber of Large Diameter Pipeline section (5).
2. before determining heavy metals, carry out the method that acid gas is processed by Wet, it is characterised in that:
(1) apparatus structure that the acid gas that this method uses processes is as follows:
The wide-mouth carrying out clearing up including dress acid solution and sample clears up bottle (1) and the sour absorption cell (2) of dress alkali liquor, wide-mouth clears up the volume volume less than acid absorption cell (2) of bottle (1), also include an acid gas conduit (3), one end of this acid gas conduit (3) is positioned at wide-mouth and clears up among bottle (1), and the other end of this acid gas conduit (3) is positioned among acid absorption cell (2)；
This acid gas conduit (3) is divided into three sections be sequentially connected with, first paragraph is pipe with small pipe diameter section (4), second segment be Large Diameter Pipeline section (5), the 3rd section be I-shaped section (6)；
One end of pipe with small pipe diameter section (4) is positioned at wide-mouth through seal rubber plug (7) after-opening and clears up bottle (1), and what seal rubber plug (7) sealed be blocked in wide-mouth clears up the bottleneck of bottle (1)；The other end of pipe with small pipe diameter section (4) connects with acid flow control valve (8)；
One end of Large Diameter Pipeline section (5) connects with acid flow control valve (8), and the other end of Large Diameter Pipeline section (5) is downwardly open funnel structure, i.e. the downwardly open funnel of Large Diameter Pipeline section (9)；
The pipe two ends of I-shaped section (6) are all funnel structure respectively, and the upper end of I-shaped section (6) is I-shaped section upward opening funnel (10), and the lower end of I-shaped section (6) is the downwardly open funnel of I-shaped section (11)；The downwardly open funnel of I-shaped section (11) is positioned among acid absorption cell (2)；
The pipe diameter of pipe with small pipe diameter section (4) is less than the pipe diameter of Large Diameter Pipeline section (5), and the pipe diameter of Large Diameter Pipeline section (5) is less than or equal to I-shaped section (6) pipe diameter；
The opening diameter of the downwardly open funnel of Large Diameter Pipeline section (9) is same as the opening diameter of I-shaped section upward opening funnel (10), the downwardly open funnel of Large Diameter Pipeline section (9) becomes anti-alkali liquor refluence fluid reservoir (12) with the closure of openings of I-shaped section upward opening funnel (10), the above of anti-alkali liquor refluence fluid reservoir (12) is Large Diameter Pipeline section (5), anti-alkali liquor refluence fluid reservoir (12) I-shaped section (6) is presented herein below, be placed with anti-alkali liquor anti-alkali liquor refluence fluid reservoir (12) and flow backwards blocking (13) of floating；
Anti-alkali liquor refluence floating blocking (13) includes blocking head (14), ball float (15) and counterweight foot (16)；Ball float (15) be arranged above with blocking head (14), ball float (15) multiple counterweight foot (16) is provided below, the weight of multiple counterweight feet (16) more than blocking head (14) weight；Anti-alkali liquor flow backwards float blocking (13) can emersion liquid level in a liquid；The top end diameter of blocking head (14) is less than the caliber of Large Diameter Pipeline section (5), and the bottom diameter of blocking head (14) is more than the caliber of Large Diameter Pipeline section (5)；
(2) the acid gas process step of this method is as follows:
(2.1), downwardly open for Large Diameter Pipeline section funnel (9) is separated with I-shaped section upward opening funnel (10), alkali liquor refluence floating blocking (13) is put into I-shaped section upward opening funnel (10), more downwardly open for Large Diameter Pipeline section funnel (9) is sealed to anti-alkali liquor refluence fluid reservoir (12) with the corresponding adhesive plaster of opening of I-shaped section upward opening funnel (10)；
(2.2), pipe with small pipe diameter section (4) and Large Diameter Pipeline section (5) are supported with test tube rack；
(2.3), in acid absorption cell (2), alkali liquor is poured into；
(2.4), below the downwardly open funnel of the I-shaped section (11) of I-shaped section (6) 1-2 centimetre putting among the alkali liquor of acid absorption cell (2), the upper part of the downwardly open funnel of I-shaped section (11) is not put among alkali liquor；The upper part height that the downwardly open funnel of I-shaped section (11) is not put among alkali liquor is 3-10 centimetre；
(2.5), the centre bore of one end traverse seal rubber plug (7) of pipe with small pipe diameter section (4), the centre bore of the pipe of pipe with small pipe diameter section (4) and seal rubber plug (7) closely cooperates air tight；
(2.6), sample put into wide-mouth and clear up bottle (1), then after pouring acid solution into；Quickly with the bottleneck having the seal rubber plug (7) being inserted with pipe with small pipe diameter section (4) blocking wide-mouth to clear up bottle (1), closely cooperate air tight；
(2.7), the acid flow control valve (8) between pipe with small pipe diameter section (4) and Large Diameter Pipeline section (5) is opened a small gap slightly；
(2.8), wide-mouth is cleared up bottle (1) to be placed on electric boiling plate and heat to boiling；
(2.9) when, being resolved per sample, the color of acid gas controls the size that acid flow control valve (8) is open, when acid gas color is yellow, acid flow control valve (8) is open less, making acid gas air pressure in acid gas conduit (3) is 1.02～1.05 atmospheric pressure, when Specimen eliminating is complete, acid flow control valve (8) is fully open, electric boiling plate continues heating to the acid solution volatilization clearing up in bottle (1) to wide-mouth completely, stops electric boiling plate heating；Wide-mouth is cleared up the acid gas that the acid solution in bottle (1) evaporates into and is carried out chemical reaction by acid gas conduit (3) with the alkali liquor in acid absorption cell (2) and become saline solution and water, and acid gas does not enter air, free from environmental pollution.
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| KR0159367B1 (en) * | 1995-11-08 | 1998-11-16 | 이승기 | Anaerobic digestion reactor using gas pressure and gravitation force and waste water treatment using thereof |
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