CN1112856A - Standard heating digestion device for water quality chemical oxygen demand - Google Patents
Standard heating digestion device for water quality chemical oxygen demand Download PDFInfo
- Publication number
- CN1112856A CN1112856A CN 94111343 CN94111343A CN1112856A CN 1112856 A CN1112856 A CN 1112856A CN 94111343 CN94111343 CN 94111343 CN 94111343 A CN94111343 A CN 94111343A CN 1112856 A CN1112856 A CN 1112856A
- Authority
- CN
- China
- Prior art keywords
- water
- condenser pipe
- volumetric flask
- oxygen demand
- water jacket
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 41
- 238000010438 heat treatment Methods 0.000 title claims abstract description 10
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 title claims abstract description 7
- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 7
- 239000001301 oxygen Substances 0.000 title claims abstract description 7
- 230000029087 digestion Effects 0.000 title claims abstract description 5
- 239000000126 substance Substances 0.000 title abstract description 3
- 238000009833 condensation Methods 0.000 claims abstract description 10
- 230000005494 condensation Effects 0.000 claims abstract description 10
- 238000007789 sealing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 abstract description 9
- 238000000034 method Methods 0.000 abstract 1
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 4
- 238000009835 boiling Methods 0.000 description 2
- 238000010992 reflux Methods 0.000 description 2
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000009834 vaporization Methods 0.000 description 1
- 230000008016 vaporization Effects 0.000 description 1
- 239000002351 wastewater Substances 0.000 description 1
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- Sampling And Sample Adjustment (AREA)
- Devices For Use In Laboratory Experiments (AREA)
Abstract
The invention relates to a standard heating digestion device for water quality chemical oxygen demand, which comprises a volumetric flask for containing a water sample, a heating device arranged at the lower bottom of the volumetric flask and a condenser pipe arranged at the upper mouth of the volumetric flask; the method is characterized in that: the upper end of the condensation pipe is provided with a closed box body, the side wall of the box body is oppositely provided with an air blower and an exhaust fan, and the upper opening part of the condensation pipe (2) is provided with a water jacket. The water cooling system is eliminated, and the water cooling system and the water jacket are used for cooling, so that the water cooling system can be made into an independent instrument and is suitable for outdoor and outdoor COD tests.
Description
The present invention relates to a kind of device of testing the hydrochemistry oxygen demand.
In the prior art, there are strict requirements in international standard＜ISO6060-1986〉and national standard＜GB11914-89〉for test hydrochemistry oxygen demand, and the preparation of chemical reagent and test chemical step all have strict demand.The GB iso standard only is defined in heated sample boiling in 10 minutes, and requiring littlely to boil can not bumping.In the operation generally with running water cooling for reflux condenser pipe constantly, as long as reach the cooling that refluxes, do not have the outer vapours of emitting.Cool off waste water resource with running water, use inconvenience, can't implement the COD operation at all for the unit that lacks the water source and often cut off the water supply.A plurality of COD analyze simultaneously and must be equipped with a plurality of resistance furnaces, cause the indoor power load excessive.
The object of the present invention is to provide a kind of standard heating digestion device that can be used as the hydrochemistry oxygen demand of instrument use, do not need running water as cooling source.
Technical scheme of the present invention is: comprise the sample capacity bottle that is used to adorn water sample, place the heater of volumetric flask lower bottom part and place the condenser pipe of volumetric flask upper oral part; The upper end of described condenser pipe is provided with the casing of sealing, and the sidewall subtend of this casing is provided with air blast and air exhauster.The upper oral part of described condenser pipe is provided with water jacket, and the snakelike condensation chamber in the water jacket communicates with condenser pipe, in the cavity between snakelike condensation chamber and the water jacket shell water is housed.Owing to be mixed with a large amount of sulfuric acid in the water sample in the sample capacity bottle, its boiling point very high (about 170 ℃) is so after its condenser pipe reached thermal balance, the top was a room temperature after air-cooled substantially.
The present invention compared with prior art has following advantage:
(1). removed the running water cooling system,,, be applicable to that field, outdoor COD test so can make independently instrument with air-cooled and water jacket cooling.
(2). volume is little, and the height of condenser pipe reduces, and can carry out at least three heating on an electric furnace and clear up, and can save the energy.
The invention will be further described below in conjunction with drawings and Examples:
Accompanying drawing is a structural front view of the present invention; Wherein:
［ 1 ］. water jacket; ［ 2 ］. condenser pipe; ［ 3 ］. air blast; ［ 4 ］. air exhauster; ［ 5 ］. casing; ［ 6 ］. the sample capacity bottle; ［ 7 ］. electrothermal furnace.
Embodiment: referring to accompanying drawing, the present invention includes the sample capacity bottle ［ 6 ］ that is used to adorn water sample, place the electrothermal furnace ［ 7 ］ of volumetric flask lower bottom part and place the condenser pipe ［ 2 ］ of volumetric flask ［ 6 ］ upper oral part; The inwall of this condenser pipe ［ 2 ］ is the burr type, to increase water vapour and extraneous efficient of carrying out heat exchange.The upper end of described condenser pipe ［ 2 ］ is provided with the casing ［ 5 ］ of sealing, the sidewall subtend of this casing ［ 5 ］ is provided with air blast ［ 3 ］ and air exhauster ［ 4 ］, can make air through condenser pipe ［ 2 ］ after air blast ［ 3 ］ and air exhauster ［ 4 ］ work, make the timely condensation of steam in the condenser pipe ［ 2 ］.The upper oral part of described condenser pipe ［ 2 ］ is provided with water jacket ［ 1 ］, and the snakelike condensation chamber in the water jacket ［ 1 ］ communicates with condenser pipe ［ 2 ］, in the cavity between snakelike condensation chamber and water jacket ［ 1 ］ shell water is housed.To volumetric flask ［ 6 ］ heating beginning the time, owing in the water sample in the volumetric flask ［ 6 ］ a large amount of sulfuric acid is housed, so during heating, water sample vaporization becomes steam and rises, and through air-cooled back condensation, has only a spot of steam arrival water jacket ［ 1 ］ to locate, so the temperature that water jacket ［ 1 ］ is located has become near room temperature, along with the moisture in the water sample constantly evaporates, the steam that arrival water jacket ［ 1 ］ is located is also fewer and feweri, does not need water jacket ［ 1 ］ to cool off substantially.
Claims (2)
1, a kind of standard of hydrochemistry oxygen demand heating digestion device comprises the sample capacity bottle [6] that is used to adorn water sample, places the heater of volumetric flask lower bottom part and places the condenser pipe [2] of volumetric flask [6] upper oral part; It is characterized in that: the upper end of described condenser pipe [2] is provided with the casing [5] of sealing, and the sidewall subtend of this casing [5] is provided with air blast [3] and air exhauster [4].
2, the standard of hydrochemistry oxygen demand according to claim 1 heating digestion device, it is characterized in that: the upper oral part of described condenser pipe ［ 2 ］ is provided with water jacket ［ 1 ］, snakelike condensation chamber in the water jacket ［ 1 ］ communicates with condenser pipe ［ 2 ］, in the cavity between snakelike condensation chamber and water jacket ［ 1 ］ shell water is housed.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111343A CN1057942C (en) | 1994-06-01 | 1994-06-01 | Standard heating digestion device for water quality chemical oxygen demand |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN94111343A CN1057942C (en) | 1994-06-01 | 1994-06-01 | Standard heating digestion device for water quality chemical oxygen demand |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN1112856A true CN1112856A (en) | 1995-12-06 |
| CN1057942C CN1057942C (en) | 2000-11-01 |
Family
ID=5035224
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN94111343A Expired - Fee Related CN1057942C (en) | 1994-06-01 | 1994-06-01 | Standard heating digestion device for water quality chemical oxygen demand |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN1057942C (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048872A (en) * | 2014-06-20 | 2014-09-17 | 国家黄金钻石制品质量监督检验中心 | One-time digestion constant volume device through gold purity detection |
| CN105403448A (en) * | 2015-11-30 | 2016-03-16 | 江苏德林环保技术有限公司 | COD open microtube digestion method and device |
| CN105817277A (en) * | 2016-04-21 | 2016-08-03 | 安徽绿健检测技术服务有限公司 | Glass burr reflowing pipe |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2119663U (en) * | 1992-02-19 | 1992-10-21 | 苏州城市建设环境保护学院 | Heating digestion device for testing chemical oxygen demand in water sample |
| CN2229663Y (en) * | 1995-03-18 | 1996-06-19 | 邢鲁奇 | Semi-automatic tissue embedding machine |
-
1994
- 1994-06-01 CN CN94111343A patent/CN1057942C/en not_active Expired - Fee Related
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104048872A (en) * | 2014-06-20 | 2014-09-17 | 国家黄金钻石制品质量监督检验中心 | One-time digestion constant volume device through gold purity detection |
| CN105403448A (en) * | 2015-11-30 | 2016-03-16 | 江苏德林环保技术有限公司 | COD open microtube digestion method and device |
| CN105403448B (en) * | 2015-11-30 | 2018-10-19 | 江苏德林环保技术有限公司 | A kind of COD opening micro-pipe digestion procedure and device |
| CN105817277A (en) * | 2016-04-21 | 2016-08-03 | 安徽绿健检测技术服务有限公司 | Glass burr reflowing pipe |
Also Published As
| Publication number | Publication date |
|---|---|
| CN1057942C (en) | 2000-11-01 |
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| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |