CA2117808A1 - Portable thermal analysis device - Google Patents
Portable thermal analysis deviceInfo
- Publication number
- CA2117808A1 CA2117808A1 CA002117808A CA2117808A CA2117808A1 CA 2117808 A1 CA2117808 A1 CA 2117808A1 CA 002117808 A CA002117808 A CA 002117808A CA 2117808 A CA2117808 A CA 2117808A CA 2117808 A1 CA2117808 A1 CA 2117808A1
- Authority
- CA
- Canada
- Prior art keywords
- furnace
- analyses
- portable apparatus
- analyses according
- flame
- 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.)
- Abandoned
Links
- 238000002076 thermal analysis method Methods 0.000 title abstract 2
- 238000004458 analytical method Methods 0.000 claims abstract description 43
- 239000000126 substance Substances 0.000 claims abstract description 7
- 239000007788 liquid Substances 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims abstract description 4
- 239000007787 solid Substances 0.000 claims abstract description 4
- 238000002485 combustion reaction Methods 0.000 claims description 12
- 239000000446 fuel Substances 0.000 claims description 8
- 239000002912 waste gas Substances 0.000 claims description 4
- 238000009413 insulation Methods 0.000 claims description 3
- 238000007664 blowing Methods 0.000 claims 1
- 230000002844 continuous effect Effects 0.000 claims 1
- 238000011065 in-situ storage Methods 0.000 claims 1
- 230000001105 regulatory effect Effects 0.000 abstract 2
- 239000007789 gas Substances 0.000 description 6
- 238000000034 method Methods 0.000 description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 230000004224 protection Effects 0.000 description 4
- 229910052782 aluminium Inorganic materials 0.000 description 3
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 3
- 238000010276 construction Methods 0.000 description 3
- 229910052500 inorganic mineral Inorganic materials 0.000 description 3
- 239000000463 material Substances 0.000 description 3
- 239000011707 mineral Substances 0.000 description 3
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 3
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 description 2
- 239000005864 Sulphur Substances 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 229910001385 heavy metal Inorganic materials 0.000 description 2
- 238000012423 maintenance Methods 0.000 description 2
- 229910052757 nitrogen Inorganic materials 0.000 description 2
- 239000002689 soil Substances 0.000 description 2
- 239000002351 wastewater Substances 0.000 description 2
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 1
- 239000004215 Carbon black (E152) Substances 0.000 description 1
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 description 1
- 229910019142 PO4 Inorganic materials 0.000 description 1
- OAICVXFJPJFONN-UHFFFAOYSA-N Phosphorus Chemical compound [P] OAICVXFJPJFONN-UHFFFAOYSA-N 0.000 description 1
- 239000004809 Teflon Substances 0.000 description 1
- 229920006362 Teflon® Polymers 0.000 description 1
- 230000006978 adaptation Effects 0.000 description 1
- 239000003570 air Substances 0.000 description 1
- HSFWRNGVRCDJHI-UHFFFAOYSA-N alpha-acetylene Natural products C#C HSFWRNGVRCDJHI-UHFFFAOYSA-N 0.000 description 1
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 1
- 229910052799 carbon Inorganic materials 0.000 description 1
- 238000006243 chemical reaction Methods 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 125000002534 ethynyl group Chemical group [H]C#C* 0.000 description 1
- -1 glas Substances 0.000 description 1
- 229930195733 hydrocarbon Natural products 0.000 description 1
- 150000002430 hydrocarbons Chemical class 0.000 description 1
- 239000001257 hydrogen Substances 0.000 description 1
- 229910052739 hydrogen Inorganic materials 0.000 description 1
- 239000011499 joint compound Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011490 mineral wool Substances 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 238000013021 overheating Methods 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 239000001301 oxygen Substances 0.000 description 1
- 229910052760 oxygen Inorganic materials 0.000 description 1
- 239000010452 phosphate Substances 0.000 description 1
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 description 1
- 229910052698 phosphorus Inorganic materials 0.000 description 1
- 239000011574 phosphorus Substances 0.000 description 1
- 239000004033 plastic Substances 0.000 description 1
- 229920000136 polysorbate Polymers 0.000 description 1
- 239000010453 quartz Substances 0.000 description 1
- 238000009877 rendering Methods 0.000 description 1
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N silicon dioxide Inorganic materials O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B17/00—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00
- F27B17/02—Furnaces of a kind not covered by any of groups F27B1/00 - F27B15/00 specially designed for laboratory use
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N31/00—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods
- G01N31/12—Investigating or analysing non-biological materials by the use of the chemical methods specified in the subgroup; Apparatus specially adapted for such methods using combustion
Landscapes
- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Life Sciences & Earth Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Biochemistry (AREA)
- Immunology (AREA)
- Physics & Mathematics (AREA)
- Analytical Chemistry (AREA)
- Combustion & Propulsion (AREA)
- General Health & Medical Sciences (AREA)
- General Physics & Mathematics (AREA)
- Molecular Biology (AREA)
- Pathology (AREA)
- Clinical Laboratory Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Investigating Or Analyzing Materials Using Thermal Means (AREA)
- Investigating Or Analyzing Non-Biological Materials By The Use Of Chemical Means (AREA)
Abstract
A portable thermal analysis device, in particular "on site"
analyses for determining the TOC-value of samples of liquid and solid substances, has a housing (1) in which is arranged a temperature-regulated oven (6), into which at least one test tube (7) may be inserted. A regulated heat supply device is provided for uniformly heating the inserted test tube (7).
analyses for determining the TOC-value of samples of liquid and solid substances, has a housing (1) in which is arranged a temperature-regulated oven (6), into which at least one test tube (7) may be inserted. A regulated heat supply device is provided for uniformly heating the inserted test tube (7).
Description
21~7S~8 PORTABLE APPARATUS . -. FOR THERMAL ANALYSES
In the field of analyses, especially for detecting volatile sub-stances or the determination of heavy metals, electrically heat-able apparatuses for analyses in the form of furnaces are known.
These furnaces are bulky, have a high weight and work slowly.
Hence, they can be used only in the laboratory. However, in some fields, especially in the field of environment, it is important to carry out analyses of soil, water, waste water or air, directly at the site since errors mainly caused by conservation and transport are reduced when the analysis is made directly at the site.
-The problem underlying the present invention is to develop anapparatus for analyses allowing thermal analyses at any site, preferably directly at the site where the samples are collected.
This problem is solved by the apparatus for analyses indicated in claim 1. The subclaims represent advantageous further embodiments.
The storage of a high energy density on a minimum of space is en-abled by the indicated apparatus. By the low-weight and simple construction of the apparatus not only a minimum of volume is achieved but also a low weight. Nearly all solid substances like soil or mud, liquid substances like water and waste water, and gaseous media like air gas and waste gas, can be analysed with the apparatus according to the invention. The apparatus according to the invention is especially suitable for determining TOC and for disintegration processes like e.g. the disintegration of water or mud samples containing metals or heavy metals. Further the deter-mination of the chemical oxygen content and the entire nitrogen content as well as the phosphate and phosphorus concentration in the samples can be determined. Displacement processes for detect-ing volatile substances, like e.g. the determination of the hydro-carbon concentration in aqueous and solid samples, as well as the detection of the volatile sulphur in these samples can be made :
~1 ~ 7SQ8 with the apparatus for analyses. Even oxydation reactions for de-termining the entire organic carbon or the entire nitrogen or the volatile sulphur concentration can be made. These tests are made at temperatures up to 850 C.
The apparatus for analyses according to the invention is provided with a furnace arranged in a housing. The furnace is arranged in a combustion shaft of the housing. The walls are made of fireproof building blocks, preferably a lightweight building block deformed under vacuum and produced from mineral fibres. Reactor containers with the samples can be inserted into the furnace. There is fur-ther a device for the controlled delivery of heat for uniformly he~ting the reactor containers, thus allowing thermal analyses.
The furnace is provided with an insulation. It consists of a fire-proof, mineral material (e.g. rock wool) being heatproof up to about 1500C. The exterior of the insulation is covered preferably with a layer of thin aluminum sheet metal or expanded metal. At the exterior of the furnace a contact protection trellis is spa-cedly arranged at its perifery, preventing inadvertant contact with the furnace casing. A distance ranging from 8 to 18 mm be-tween aluminum casing and trellis is sufficient.
The reactor containers filled with the samples are placed in the furnace and heated to the temperature necessary for the analysis.
The furnace can be arranged vertically or horizontally in the apparatus. Vertically arranged furnaces are inserted into a verti-cal combustion shaft, horizontally arranged furnaces are inserted into a horizontal combustion shaft of the apparatus. The reactor containers are inserted vertically or horizontally in a respective way into the furnace. The combustion shaft can be shaped zylindri-cally or, especially if several containers are inserted, it can be rectangularly or elliptically shaped. Vertically arranged furnaces have at least one vertical flame shaft in their lower area. Hori-~ ~ ~ 7 J? ~ ~3 3 zontally arranged furnaces are provided with one or more verticalflame shafts.
The heat supply device is arranged in a heating room in the bottom area of the apparatus. According to an advantageous embodiment it has a burner device having an ignition flame and a main flame con-sisting of one or more flame groups. A pre-mixed flame is prefer-ably used as main flame the conical pointed form of which and the high temperature allow an excellent adaptation to the small volume of the burning room and the prevailing temperature having a high heat density. A flame insulating layer is arranged between the conical point of the pre-mixed flame and the reactor container to be~heated for preventing overheating in view of the colder outer zones of the middle parts of the reactor containers in the fur-nace. It consists preferably of a relatively thin plate consisting of a mineral material and is arranged below the reactor container, about in the area of the flame point. The flame insulating layer is present in the horizontal as well as in the vertical arrange-ment of the furnace.
Regarding the compact and easy to handle construction it is espe-cially advantageous that the furnace is arranged vertically slid-ably so that the fire room is easily accessible for maintenance or during igniting operations.
Due to the double-flame construction of the combustion device security of the apparatus for analyses is guaranteed. The ignition flame is burning continuously, thus securing continuity of the fire operation; the main flame is clocked, e.g. by an on-and-off function and by continuously adjusting the volume flow by means of a throttle device (e.g. a magnetic valve) during continuous con-trols or by similar adjustments of the gas or air flow volume.
Should the ignition flame be extinguished inadvertently the fuel supply will be interrupted by an automatic safety device. The control of the temperature inside the furnace is carried out by altering the fuel supply for the main flame. The fuel volume flow s~ ~ ~7 8 ~8 4 is adapted continuously or discontinuously. sy adjusting the cross section of a turning valve the flame can be altered continu-ously.
An on-and-off operation is preferably carried out by means of a magnetic valve, opening and closing the gas access. The electric energy necessary for the control of these processes is supplied by batteries integrated in the apparatus for analyses; consumption is low and their size very small. These batteries can be charged by mains power or solar and/or wind energy. Due to the described con-trol of the apparatus for analyses the heating time can be achiev-ed exactly within a few minutes; deviations from the set value of the temperature are below 1%. In this case it is important to have a rapid control circuit allowing clock frequencies within the range of seconds. Rapid analogue circuits and di~ital control circuits with respective microprocessors can be used therefor.
It is advantageous to provide a detachable funnel for carrying off the waste gas. This funnel can be attached during operation; it is detached for transport to keep the outer dimensions small.`The gas is carried off by the natural lift in the funnel or it can be done by means of a forced stream, e.g. by a blower. The combustion device can be fuelled with gaseous or liquid energy, like liquid gas, mixtures containing acetylene, oil, gasolin, or hydrogen for especially high temperatures. A pressure vessel having a pressure control for the fuel is integrated in the housin~ of the apparatus for analyses.
Several of these apparatuses for analyses can be arranged for a combined apparatus, thus combining simultaneously several process steps and rendering possible several analyses at the same time or a complete analysis for which several processi steps are necessary.
The invention is described in detail by means of an example of em-bodiment represented in the following figures.
~i7S~
It is shown in igure 1: A partially broken up view of the apparatus for analyses during operation;
igure 2: A partially broken up view of the apparatus for analyses represented in figure 1 with the furnace shifted up-wards;
igure 3: A top view of the apparatus for analyses;
Figure 4: A top view of the furnace room with several reactor ~ containers;
igure 5: An enlarged representation of the lower part of the reactor container.
The apparatus for analyses has a housing 1 being provided with a handle 2; in this housing a room 3 is provided for a pressure-proof fuel container 4 and a combustion shaft 5 in which a furnace 6 is arranged. Reactor containers 7 with the samples to be analys-ed can be inserted into the furnace 6. Further tbere is provided a detachable funnel 8. The funnel 8 is surrounded by a contact pro-tection trellis 13. The furnace 6 is also surrounded with a con-tact protection trellis 14 for preventing burnings by the rela-tively high temperatures of the furnace wall 24. The outside of the furnace wall 24 is provided with an insulating layer and this layer is provided with an aluminum sheet metal casing. Below the fuel container 4 electric batteries 9 are arranged for supplying energy for the controI of the apparatus for analyses. Above the combustion shaft 5 a lever 10 is arranged securing the position of the furnace 6 in a defined height. In Figure 2 the example of em-bodiment of the apparatus for analyses is represented showing the furnace 6 shifted vertically upwards. In this position of the furnace 6 the fire room 11 is especially easyly accessible for maintenance or ignition processes of the flames 17, 18 of the com-' ~117~J~
bustion device. The combustion device has an ignition flame and amain flame as well as a control for this main flame. The main flame has a pre-mixed flame core 17 and a secondary flame 18. The control of the fuel supply to the flames is carried out continu-ously or discontinuously. The on-and-off function has a magnetic valve 15. Further there are apertures 16 for sucking in the com-bustion air. The apparatus for analyses is provided with several reactor containers 7 which preferably are shaped equally and can be inserted into the furnace room 12 for carrying out the analy-sis. One or several reactor containers 7 can be placed in the fur-nace room 12 of the furnace 6 (Fig. 4, Fig. 5). The furnace 6 and the furnace room 12 can be shaped cylindrically or rectangularly (Fi~. 3, Fig. 4). The reactor containers preferably consist of stainless steel, glas, quartz glas, ceramics or plastic material (e.g. Teflon). They can be closed tightly and compression-proof by means of a cover 20, which is necessary especially for disintegra-tion processes. The reactor container(s) 7 is (are) provided with a thermo-sensing device 22, as represented in figure 5. The ther-mo-sensing device 22 is attached to the reactor container 7 through two protection tubes 23 made of ceramic. In the upper part of the furnace 6 there is a thermo-plug-type connector 25 into which the thermo-sensing device 22 is inserted and attached. In the bottom part of the reactor container 7, between it and between the flames running through the flame shafts of the furnace 6 into the furnace room 12, a flame-blocking layer 21 is arranged in a mounting 26 in the furnace room 12.
The apparatus for analyses according to the invention has a length of about 300mm according to its use, a width of about 180mm and a height of about 400mm. The inserted furnace has a height of about 300 mm and a diameter of about 120mm. The furnace has a weight of about 800 to 1000g. The inserted gas bottles have a weight of about 1000g.
In the field of analyses, especially for detecting volatile sub-stances or the determination of heavy metals, electrically heat-able apparatuses for analyses in the form of furnaces are known.
These furnaces are bulky, have a high weight and work slowly.
Hence, they can be used only in the laboratory. However, in some fields, especially in the field of environment, it is important to carry out analyses of soil, water, waste water or air, directly at the site since errors mainly caused by conservation and transport are reduced when the analysis is made directly at the site.
-The problem underlying the present invention is to develop anapparatus for analyses allowing thermal analyses at any site, preferably directly at the site where the samples are collected.
This problem is solved by the apparatus for analyses indicated in claim 1. The subclaims represent advantageous further embodiments.
The storage of a high energy density on a minimum of space is en-abled by the indicated apparatus. By the low-weight and simple construction of the apparatus not only a minimum of volume is achieved but also a low weight. Nearly all solid substances like soil or mud, liquid substances like water and waste water, and gaseous media like air gas and waste gas, can be analysed with the apparatus according to the invention. The apparatus according to the invention is especially suitable for determining TOC and for disintegration processes like e.g. the disintegration of water or mud samples containing metals or heavy metals. Further the deter-mination of the chemical oxygen content and the entire nitrogen content as well as the phosphate and phosphorus concentration in the samples can be determined. Displacement processes for detect-ing volatile substances, like e.g. the determination of the hydro-carbon concentration in aqueous and solid samples, as well as the detection of the volatile sulphur in these samples can be made :
~1 ~ 7SQ8 with the apparatus for analyses. Even oxydation reactions for de-termining the entire organic carbon or the entire nitrogen or the volatile sulphur concentration can be made. These tests are made at temperatures up to 850 C.
The apparatus for analyses according to the invention is provided with a furnace arranged in a housing. The furnace is arranged in a combustion shaft of the housing. The walls are made of fireproof building blocks, preferably a lightweight building block deformed under vacuum and produced from mineral fibres. Reactor containers with the samples can be inserted into the furnace. There is fur-ther a device for the controlled delivery of heat for uniformly he~ting the reactor containers, thus allowing thermal analyses.
The furnace is provided with an insulation. It consists of a fire-proof, mineral material (e.g. rock wool) being heatproof up to about 1500C. The exterior of the insulation is covered preferably with a layer of thin aluminum sheet metal or expanded metal. At the exterior of the furnace a contact protection trellis is spa-cedly arranged at its perifery, preventing inadvertant contact with the furnace casing. A distance ranging from 8 to 18 mm be-tween aluminum casing and trellis is sufficient.
The reactor containers filled with the samples are placed in the furnace and heated to the temperature necessary for the analysis.
The furnace can be arranged vertically or horizontally in the apparatus. Vertically arranged furnaces are inserted into a verti-cal combustion shaft, horizontally arranged furnaces are inserted into a horizontal combustion shaft of the apparatus. The reactor containers are inserted vertically or horizontally in a respective way into the furnace. The combustion shaft can be shaped zylindri-cally or, especially if several containers are inserted, it can be rectangularly or elliptically shaped. Vertically arranged furnaces have at least one vertical flame shaft in their lower area. Hori-~ ~ ~ 7 J? ~ ~3 3 zontally arranged furnaces are provided with one or more verticalflame shafts.
The heat supply device is arranged in a heating room in the bottom area of the apparatus. According to an advantageous embodiment it has a burner device having an ignition flame and a main flame con-sisting of one or more flame groups. A pre-mixed flame is prefer-ably used as main flame the conical pointed form of which and the high temperature allow an excellent adaptation to the small volume of the burning room and the prevailing temperature having a high heat density. A flame insulating layer is arranged between the conical point of the pre-mixed flame and the reactor container to be~heated for preventing overheating in view of the colder outer zones of the middle parts of the reactor containers in the fur-nace. It consists preferably of a relatively thin plate consisting of a mineral material and is arranged below the reactor container, about in the area of the flame point. The flame insulating layer is present in the horizontal as well as in the vertical arrange-ment of the furnace.
Regarding the compact and easy to handle construction it is espe-cially advantageous that the furnace is arranged vertically slid-ably so that the fire room is easily accessible for maintenance or during igniting operations.
Due to the double-flame construction of the combustion device security of the apparatus for analyses is guaranteed. The ignition flame is burning continuously, thus securing continuity of the fire operation; the main flame is clocked, e.g. by an on-and-off function and by continuously adjusting the volume flow by means of a throttle device (e.g. a magnetic valve) during continuous con-trols or by similar adjustments of the gas or air flow volume.
Should the ignition flame be extinguished inadvertently the fuel supply will be interrupted by an automatic safety device. The control of the temperature inside the furnace is carried out by altering the fuel supply for the main flame. The fuel volume flow s~ ~ ~7 8 ~8 4 is adapted continuously or discontinuously. sy adjusting the cross section of a turning valve the flame can be altered continu-ously.
An on-and-off operation is preferably carried out by means of a magnetic valve, opening and closing the gas access. The electric energy necessary for the control of these processes is supplied by batteries integrated in the apparatus for analyses; consumption is low and their size very small. These batteries can be charged by mains power or solar and/or wind energy. Due to the described con-trol of the apparatus for analyses the heating time can be achiev-ed exactly within a few minutes; deviations from the set value of the temperature are below 1%. In this case it is important to have a rapid control circuit allowing clock frequencies within the range of seconds. Rapid analogue circuits and di~ital control circuits with respective microprocessors can be used therefor.
It is advantageous to provide a detachable funnel for carrying off the waste gas. This funnel can be attached during operation; it is detached for transport to keep the outer dimensions small.`The gas is carried off by the natural lift in the funnel or it can be done by means of a forced stream, e.g. by a blower. The combustion device can be fuelled with gaseous or liquid energy, like liquid gas, mixtures containing acetylene, oil, gasolin, or hydrogen for especially high temperatures. A pressure vessel having a pressure control for the fuel is integrated in the housin~ of the apparatus for analyses.
Several of these apparatuses for analyses can be arranged for a combined apparatus, thus combining simultaneously several process steps and rendering possible several analyses at the same time or a complete analysis for which several processi steps are necessary.
The invention is described in detail by means of an example of em-bodiment represented in the following figures.
~i7S~
It is shown in igure 1: A partially broken up view of the apparatus for analyses during operation;
igure 2: A partially broken up view of the apparatus for analyses represented in figure 1 with the furnace shifted up-wards;
igure 3: A top view of the apparatus for analyses;
Figure 4: A top view of the furnace room with several reactor ~ containers;
igure 5: An enlarged representation of the lower part of the reactor container.
The apparatus for analyses has a housing 1 being provided with a handle 2; in this housing a room 3 is provided for a pressure-proof fuel container 4 and a combustion shaft 5 in which a furnace 6 is arranged. Reactor containers 7 with the samples to be analys-ed can be inserted into the furnace 6. Further tbere is provided a detachable funnel 8. The funnel 8 is surrounded by a contact pro-tection trellis 13. The furnace 6 is also surrounded with a con-tact protection trellis 14 for preventing burnings by the rela-tively high temperatures of the furnace wall 24. The outside of the furnace wall 24 is provided with an insulating layer and this layer is provided with an aluminum sheet metal casing. Below the fuel container 4 electric batteries 9 are arranged for supplying energy for the controI of the apparatus for analyses. Above the combustion shaft 5 a lever 10 is arranged securing the position of the furnace 6 in a defined height. In Figure 2 the example of em-bodiment of the apparatus for analyses is represented showing the furnace 6 shifted vertically upwards. In this position of the furnace 6 the fire room 11 is especially easyly accessible for maintenance or ignition processes of the flames 17, 18 of the com-' ~117~J~
bustion device. The combustion device has an ignition flame and amain flame as well as a control for this main flame. The main flame has a pre-mixed flame core 17 and a secondary flame 18. The control of the fuel supply to the flames is carried out continu-ously or discontinuously. The on-and-off function has a magnetic valve 15. Further there are apertures 16 for sucking in the com-bustion air. The apparatus for analyses is provided with several reactor containers 7 which preferably are shaped equally and can be inserted into the furnace room 12 for carrying out the analy-sis. One or several reactor containers 7 can be placed in the fur-nace room 12 of the furnace 6 (Fig. 4, Fig. 5). The furnace 6 and the furnace room 12 can be shaped cylindrically or rectangularly (Fi~. 3, Fig. 4). The reactor containers preferably consist of stainless steel, glas, quartz glas, ceramics or plastic material (e.g. Teflon). They can be closed tightly and compression-proof by means of a cover 20, which is necessary especially for disintegra-tion processes. The reactor container(s) 7 is (are) provided with a thermo-sensing device 22, as represented in figure 5. The ther-mo-sensing device 22 is attached to the reactor container 7 through two protection tubes 23 made of ceramic. In the upper part of the furnace 6 there is a thermo-plug-type connector 25 into which the thermo-sensing device 22 is inserted and attached. In the bottom part of the reactor container 7, between it and between the flames running through the flame shafts of the furnace 6 into the furnace room 12, a flame-blocking layer 21 is arranged in a mounting 26 in the furnace room 12.
The apparatus for analyses according to the invention has a length of about 300mm according to its use, a width of about 180mm and a height of about 400mm. The inserted furnace has a height of about 300 mm and a diameter of about 120mm. The furnace has a weight of about 800 to 1000g. The inserted gas bottles have a weight of about 1000g.
Claims (13)
1. Portable apparatus for thermal analyses, espe-cially for "in situ" analyses, particularly for determining TOC in liquid and solid samples of substances, with a housing (1) and a temperature-controlled furnace (6) arranged therein, into which at least one reactor container (7) can be inserted, and with a device for a controlled heat supply for uniformly heating the inserted reactor containers (7).
2. Portable apparatus for analyses according to claim 1, characterized in that a plurality of reactor containers (7) can be inserted into the furnace (6).
3. Portable apparatus for analyses according to claim 1 or 2, characterized in that the furnace (6) is made of fireproof building blocks.
4. Portable apparatus for analyses according to claim 3, characterized in that the wall (24) of the furnace (6) is provided with an insulation.
5. Portable apparatus for analyses according to one of the pre-ceding claims, characterized in that the furnace (6) is arranged horizontally or vertically in a combustion shaft (5) of the housing (1).
6. Portable apparatus for analyses according to claim 5, characterized in that the furnace (6) is vertically slidable in an upward direction in the combustion shaft (5).
7. Portable apparatus for analyses according to one of the preceding claims, characterized in that the device for the heat supply is a bur-ner being provided with an ignition device and a main flame (17, 18) consisting of one or several flame groups.
8. Portable apparatus for analyses according to claim 7, characterized in that the main flame is clocked.
9. Portable apparatus for analyses according to one of the pre-ceding claims, characterized in that a flame-blocking layer (21) is arranged between the reactor container (7) and the point of the flame.
10. Portable apparatus for analyses according to one of the pre-ceding claims, characterized in that the temperature is controlled by a con-tinuous or discontinuous control of the energy supply of the device for the supply of heat.
11. Apparatus for analyses according to one of the preceding claims, characterized in that a funnel (8) can be attached onto the furnace (6) for carrying off the waste gas.
12. Apparatus for analyses according to claim 11, characterized in that there is a blower for blowing off the waste gas.
13. Apparatus for analyses according to claim 6, characterized in that gaseous or liquid energy carrier are used as fuel.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9301704U DE9301704U1 (en) | 1993-02-08 | 1993-02-08 | Portable analyzer for thermal analysis |
| DEG9301704.9U | 1993-02-08 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2117808A1 true CA2117808A1 (en) | 1994-08-18 |
Family
ID=6889100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002117808A Abandoned CA2117808A1 (en) | 1993-02-08 | 1994-02-07 | Portable thermal analysis device |
Country Status (9)
| Country | Link |
|---|---|
| EP (1) | EP0635130B1 (en) |
| JP (1) | JPH07505230A (en) |
| AU (1) | AU6036494A (en) |
| CA (1) | CA2117808A1 (en) |
| DE (2) | DE9301704U1 (en) |
| FI (1) | FI944686L (en) |
| HU (1) | HUT69562A (en) |
| NO (1) | NO943784L (en) |
| WO (1) | WO1994018556A1 (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102944462B (en) * | 2012-11-15 | 2014-08-06 | 上海天科化工检测有限公司 | Self-heating low-voltage arc device for carrying out high-temperature decomposition and gasification on solid material |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3752643A (en) * | 1971-12-27 | 1973-08-14 | W Robinson | Portable gas fired art pottery kiln and method |
| US4462963A (en) * | 1982-03-05 | 1984-07-31 | Leco Corporation | Analytical furnace |
| JPS59188554A (en) * | 1983-04-11 | 1984-10-25 | Nec Corp | Total organic carbon concentration meter |
| IT1214778B (en) * | 1984-01-24 | 1990-01-18 | Giovanni Santilli | INTEGRATED PORTABLE OVEN COMPLEX AND RELATED HEAT SOURCE |
-
1993
- 1993-02-08 DE DE9301704U patent/DE9301704U1/en not_active Expired - Lifetime
-
1994
- 1994-02-07 DE DE59406308T patent/DE59406308D1/en not_active Expired - Fee Related
- 1994-02-07 JP JP6517525A patent/JPH07505230A/en active Pending
- 1994-02-07 WO PCT/DE1994/000120 patent/WO1994018556A1/en active IP Right Grant
- 1994-02-07 CA CA002117808A patent/CA2117808A1/en not_active Abandoned
- 1994-02-07 EP EP94906842A patent/EP0635130B1/en not_active Expired - Lifetime
- 1994-02-07 HU HU9402852A patent/HUT69562A/en unknown
- 1994-02-07 AU AU60364/94A patent/AU6036494A/en not_active Abandoned
- 1994-10-06 FI FI944686A patent/FI944686L/en not_active Application Discontinuation
- 1994-10-07 NO NO943784A patent/NO943784L/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| NO943784D0 (en) | 1994-10-07 |
| JPH07505230A (en) | 1995-06-08 |
| HU9402852D0 (en) | 1994-12-28 |
| AU6036494A (en) | 1994-08-29 |
| HUT69562A (en) | 1995-09-28 |
| FI944686A0 (en) | 1994-10-06 |
| DE59406308D1 (en) | 1998-07-30 |
| WO1994018556A1 (en) | 1994-08-18 |
| NO943784L (en) | 1994-10-07 |
| DE9301704U1 (en) | 1993-04-15 |
| EP0635130B1 (en) | 1998-06-24 |
| FI944686L (en) | 1994-10-06 |
| EP0635130A1 (en) | 1995-01-25 |
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| Date | Code | Title | Description |
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| FZDE | Discontinued |