CN201565295U - Thermal oxidation furnace - Google Patents
Thermal oxidation furnace Download PDFInfo
- Publication number
- CN201565295U CN201565295U CN200920292769XU CN200920292769U CN201565295U CN 201565295 U CN201565295 U CN 201565295U CN 200920292769X U CN200920292769X U CN 200920292769XU CN 200920292769 U CN200920292769 U CN 200920292769U CN 201565295 U CN201565295 U CN 201565295U
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- China
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- catalytic reaction
- thermal oxidation
- oxidation furnace
- temperature
- reaction stove
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Abstract
The utility model discloses a thermal oxidation furnace, which comprises a scrubber, a catalytic reaction furnace, and a gas circuit which are connected in sequence, wherein the catalytic reaction furnace comprises a plurality of catalysis pipes, catalysts are filled in catalysis pipes, and heating resistance wires are wound around catalysis pipes; heating resistance wires are connected with a heating temperature control system which is used for controlling the heating temperature of heating resistance wires; and air to be detected is input to an inlet of the scrubber, and an outlet of the catalytic reaction furnace is connected to a gas analyzer through the gas circuit. In the thermal oxidation furnace, the plurality of catalytic reaction pipes are arranged, and different catalysts and reaction temperatures can be simultaneously adopted to convert ammonia, hydrogen sulphide, and total organic sulfur in the air; and the thermal oxidation furnace has the advantages of high conversion efficiency, long service life of catalysts, stable property, simple and convenient use, easy control, and the like, and lowers the production and running cost of a whole set of air automatic monitoring system.
Description
Technical field
The utility model relates to the converter of chemical catalysis reaction, especially aspect environmental monitoring, and the thermal oxidation furnace that when being widely used in atmospheric monitoring airborne ammonia, hydrogen sulfide and total organic sulfur is transformed.
Background technology
Along with industrial expansion, Human's production, life increase day by day to the pollution of atmospheric environment.At some industry field, national regulation is monitored the concentration of emission of sulfide, ammonia.In the environmental monitoring field, need use the thermal oxidation furnace that produced pollution molecule when oxygen in the atmosphere decomposed changes into the gas that analytical instrument can discern.Thermal oxidation furnace of the prior art generally can only carry out catalytic reaction by a kind of gas of specific aim, and the thermal oxidation furnace that for example can transform nitrogenous gas uses with chemiluminescent nitrogen-oxide analyzer,, can test NH
3And NO
X The thermal oxidation furnace that can transform sulfurous gas uses with flue gas analyser, can test H
2S or SO
2When prior art is changed in multiple gases, need many thermal oxidation furnaces of configuration.
The utility model content
The technical problems to be solved in the utility model provides a kind of thermal oxidation furnace that can be simultaneously change airborne ammonia, hydrogen sulfide and total organic sulfur, and its conversion efficiency height, long service life, use are simple, stable performance, control easily.
In order to solve the problems of the technologies described above, the utility model provides a kind of thermal oxidation furnace, comprises the washer, catalytic reaction stove and the gas circuit that connect in turn, and described catalytic reaction stove comprises a plurality of catalysing tubes, be filled with catalyst in the described catalysing tube, described catalysing tube is around with resistive heater; Described resistive heater is connected with the heating temperature-controlling system, to control the heating-up temperature of described resistive heater; The inlet of described washer is imported air to be detected, and the outlet of described catalytic reaction stove is connected to gas analysis instrument by described gas circuit.
Further, described washer comprises valve, air chamber and seal cover, wherein, described air chamber is cylindric, by central dividing plate air chamber is divided into two parts, gas enters air chamber from valve, forms the U-shaped gas circuit, come out to enter described catalytic reaction stove by the another one valve, described seal cover forms sealing to described air chamber.
Further, the jointing of described washer and catalytic reaction stove is the screwed sealed screw ring of poly-PTFE.
Further, described catalytic reaction stove is one one a cavate catalytic reaction stove, is provided with a plurality of catalysing tubes in each chamber of catalytic reaction stove.
Further, described catalytic reaction stove is an one multi-cavity type catalytic reaction stove, is provided with a catalysing tube in each chamber of catalytic reaction stove.
Further, described heating temperature-controlling system comprises temperature controller, solid-state relay, temp probe, and described temp probe is connected with described temperature controller, is used to survey the interior reaction temperature of catalysing tube and temperature value is exported to described temperature controller; Described solid-state relay is connected between described temperature controller and the described resistive heater, and described temperature controller is controlled the break-make of solid-state relay according to the temperature signal of described temp probe output, thereby controls the heating-up temperature of described resistive heater.
Further, described temp probe is a K type thermocouple.
Further, described catalysing tube is a quartz ampoule, and its profile is spiral helicine cylinder.
Further, described heating temperature-controlling system has many groups, the heating-up temperature of a catalysing tube outside of every group of control resistive heater.
Further, described catalytic reaction stove outside is provided with the thermal insulation layer that the alumina silicate cast forms.
Thermal oxidation furnace of the present utility model, be provided with a plurality of catalytic reaction tubes, can adopt different catalyst and reaction temperature simultaneously airborne ammonia, hydrogen sulfide and total organic sulfur to be changed, and have advantages such as the long service life, stable performance of conversion efficiency height, catalyst, easy to use, easy control, lowered the production and the operating cost of a whole set of air automatic monitoring system.
Description of drawings
Fig. 1 is the overall structure figure of thermal oxidation furnace of the present utility model;
Fig. 2 is the stereogram of washer in the thermal oxidation furnace of the present utility model;
Fig. 3 is the cutaway view of washer in the thermal oxidation furnace of the present utility model;
Fig. 4 is the schematic perspective view of catalytic reaction stove in the thermal oxidation furnace of the present utility model;
Fig. 5 is the schematic perspective view of the other direction of catalytic reaction stove in the thermal oxidation furnace of the present utility model.
The specific embodiment
The utility model is described in further detail below in conjunction with the drawings and specific embodiments, so that those skilled in the art can better understand the utility model and being implemented, but illustrated embodiment is not as to qualification of the present utility model.
As shown in Figure 1, thermal oxidation furnace of the present utility model, the middle part of this thermal oxidation furnace is provided with catalytic reaction stove 1, and top is provided with transformer 4, heater switch 5 and washer 7 etc., and the bottom is provided with heating temperature-controlling system and gauge tap 3.Transformer 4 is used for the voltage of external power supply is adjusted to the operating voltage of thermal oxidation furnace, and is power supplies such as heating and temperature-controlling system; Heater switch 5 is used to open and close heating system.Washer 7 is connected with catalytic reaction stove 1, and air to be detected enters 6 reactions of catalytic reaction stove after washer 7 washings.Catalytic reaction stove outside is provided with the thermal insulation layer that the alumina silicate cast forms.
As shown in Figures 2 and 3, washer 7 in the thermal oxidation furnace of the present utility model, it comprises a cylindrical housings 8, the cylindric air chamber 13 of housing 8 inner formation, housing 8 one ends are provided with valve, the other end is by seal cover 9 sealings, and housing 8 inside are provided with a dividing plate 12, and dividing plate 12 is divided into two parts with air chamber 13.Valve comprises suction nozzle 10 and outlet nozzle 11, and gas enters air chamber from suction nozzle 10, forms the U-shaped gas circuit, comes out to enter catalytic reaction stove 1 by other outlet nozzle 11.Washer 7 is the screwed sealed screw ring of poly-PTFE with the jointing of catalytic reaction stove 1.
Described heating temperature-controlling system comprises temperature controller 2, solid-state relay 6, temp probe 19, and temp probe 19 is connected with temperature controller 2, is used to survey the reaction temperature in the catalysing tube 14 and temperature value exported to temperature controller 2; Solid-state relay 6 is connected between temperature controller 2 and the resistive heater 18, and temperature controller 2 is according to the break-make of the temperature signal control solid-state relay 6 of temp probe 19 outputs, thus the heating-up temperature of control resistive heater 18.The heating temperature-controlling system can have many groups, the heating-up temperature of a catalysing tube outside of every group of control resistive heater; Also can only establish one group of heating temperature-controlling system, control the heating-up temperature of all catalysing tube outside resistive heaters with this heating temperature-controlling system.
The utility model adopt temperature controller to each body of heater respectively by different manually be provided with temperature carry out PID (Proportion Integration Differentiation, ratio calculus) control (departure :≤1%FS).Heating-up temperature is adjustable at 760 ℃～860 ℃, heating power is the following 100W～200W of alternating current-direct current 50V, detector unit select for use conventional K type thermocouple (detect error :≤3%), guarantee under the situation of gas with various flow, the fluctuation of temperature is controlled at ± 5 ℃ in.
Special catalyst platinum black in the body of heater is under specific temperature, and reacting with the composition that needs in the air to remove is removed this composition in this body of heater.Said temperature can be regulated in 130 ℃～380 ℃ scopes.Reaction principle:
H
2S+O
2＝H
2O+SO
2
4NH
3+5O
2＝4NO+6H
2O
Through comparing to importing and exporting gas ingredients, be sample with the exit gas, draw following valid data:
Hydrogen sulfide: furnace temperature (700 ℃～750 ℃) conversion efficiency is (more than 96%; )
Ammonia: furnace temperature (800 ℃～850 ℃) conversion efficiency (90%～95%.)
The above embodiment is the preferred embodiment that proves absolutely that the utility model is lifted, and protection domain of the present utility model is not limited thereto.Being equal to that those skilled in the art are done on the utility model basis substitutes or conversion, all within protection domain of the present utility model.Protection domain of the present utility model is as the criterion with claims.
Claims (10)
1. a thermal oxidation furnace is characterized in that, comprises the washer, catalytic reaction stove and the gas circuit that connect in turn, and described catalytic reaction stove comprises a plurality of catalysing tubes, is filled with catalyst in the described catalysing tube, and described catalysing tube is around with resistive heater; Described resistive heater is connected with the heating temperature-controlling system, to control the heating-up temperature of described resistive heater; The inlet of described washer is imported air to be detected, and the outlet of described catalytic reaction stove is connected to gas analysis instrument by described gas circuit.
2. thermal oxidation furnace according to claim 1, it is characterized in that, described washer comprises valve, air chamber and seal cover, wherein, described air chamber is cylindric, by central dividing plate air chamber is divided into two parts, gas enters air chamber from valve, form the U-shaped gas circuit, come out to enter described catalytic reaction stove by the another one valve, described seal cover forms sealing to described air chamber.
3. thermal oxidation furnace according to claim 2 is characterized in that, the jointing of described washer and catalytic reaction stove is the screwed sealed screw ring of poly-PTFE.
4. thermal oxidation furnace according to claim 1 is characterized in that, described catalytic reaction stove is one one a cavate catalytic reaction stove, is provided with a plurality of catalysing tubes in each chamber of catalytic reaction stove.
5. thermal oxidation furnace according to claim 1 is characterized in that, described catalytic reaction stove is an one multi-cavity type catalytic reaction stove, is provided with a catalysing tube in each chamber of catalytic reaction stove.
6. thermal oxidation furnace according to claim 1, it is characterized in that, described heating temperature-controlling system comprises temperature controller, solid-state relay, temp probe, and described temp probe is connected with described temperature controller, is used to survey the interior reaction temperature of catalysing tube and temperature value is exported to described temperature controller; Described solid-state relay is connected between described temperature controller and the described resistive heater, and described temperature controller is controlled the break-make of solid-state relay according to the temperature signal of described temp probe output, thereby controls the heating-up temperature of described resistive heater.
7. thermal oxidation furnace according to claim 6 is characterized in that, described temp probe is a K type thermocouple.
8. thermal oxidation furnace according to claim 1 is characterized in that, described catalysing tube is a quartz ampoule, and its profile is spiral helicine cylinder.
9. thermal oxidation furnace according to claim 1 is characterized in that, described heating temperature-controlling system has many groups, the heating-up temperature of a catalysing tube outside of every group of control resistive heater.
10. thermal oxidation furnace according to claim 1 is characterized in that, described catalytic reaction stove outside is provided with the thermal insulation layer that the alumina silicate cast forms.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920292769XU CN201565295U (en) | 2009-12-08 | 2009-12-08 | Thermal oxidation furnace |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200920292769XU CN201565295U (en) | 2009-12-08 | 2009-12-08 | Thermal oxidation furnace |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201565295U true CN201565295U (en) | 2010-09-01 |
Family
ID=42657575
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200920292769XU Expired - Lifetime CN201565295U (en) | 2009-12-08 | 2009-12-08 | Thermal oxidation furnace |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201565295U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883200A (en) * | 2019-01-16 | 2019-06-14 | 太原理工大学 | A kind of multitube diamond heating device |
-
2009
- 2009-12-08 CN CN200920292769XU patent/CN201565295U/en not_active Expired - Lifetime
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109883200A (en) * | 2019-01-16 | 2019-06-14 | 太原理工大学 | A kind of multitube diamond heating device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20100901 |