Efficient oxidation reaction device for TOC (total organic carbon) determination

Abstract

The utility model discloses an efficient oxidation reaction device for TOC (total organic carbon) determination. The efficient oxidation reaction device comprises an air stripping reaction tube, an ultraviolet lamp, an air pump, a peristaltic pump, an ozone generation component and a plurality of valves, the peristaltic pump is provided with two ends, one end of the peristaltic pump is connected with a gas-liquid inlet in the lower side of the air stripping reaction tube through a valve, and the ozone generation assembly and the air pump are also respectively connected with the gas-liquid inlet in the lower side of the air stripping reaction tube through valves; a gas overflow port is formed in the top of the air stripping reaction tube, and the ultraviolet lamp is mounted in the air stripping reaction tube. According to the utility model, through combination of ultraviolet digestion and ozone oxidation, multiple oxidation guarantee is formed, and total organic carbon (TOC) can be converted more thoroughly, so that the test is more efficient, and the data is more accurate.

Description

TECHNICAL FIELD

[0001] The utility model relates to total organic carbon (TOC) determination technical field, specifically for a kind of high-efficiency oxidation reaction device for TOC determination. BACKGROUND

[0002] Total organic carbon (TOC) is expressed in the content of carbon the total amount of organic matter in water, result is expressed in carbon (C) mass concentration (mg / L). Carbon is the common component of all organic matter, the main element of organic matter, the higher TOC value of water, indicate that the content of organic matter in water is higher, therefore, TOC can be used as the index of evaluation water quality organic pollution. The method for determining TOC has: combustion oxidation-non-dispersive infrared absorption method, difference method, direct determination method and wet oxidation method. Among them, wet oxidation method refers to using ultraviolet light nanometer catalytic oxidation method, its oxidation capacity is increased by more than 100 times compared with traditional single-wavelength ultraviolet light oxidation method, and the sensitivity is extremely high. At present, in wet oxidation method, the most commonly used is to use potassium persulfate oxidation-ultraviolet digestion spectrophotometric method to determine. However, usually, the oxidation efficiency is low, and the oxidation reaction is not thorough, which leads to unstable test structure and affects the test effect. SUMMARY

[0003] The utility model discloses a kind of high-efficiency oxidation reaction device for TOC determination, to convert total organic carbon (TOC) more thoroughly, make test more efficient, data more accurate. To achieve the above-mentioned purpose, the utility model uses following technical scheme:

[0004] The utility model discloses a kind of high-efficiency oxidation reaction device for TOC determination, including: blow-off reaction tube, ultraviolet lamp, gas pump, peristaltic pump, ozone generation component and several valves.

[0005] The peristaltic pump is provided with two ends, one end is connected with the gas-liquid inlet below the blow-off reaction tube side by valve, and the ozone generation component and gas pump are also connected with the gas-liquid inlet below the blow-off reaction tube side by valve.

[0006] The top of the blow-off reaction tube is gas overflow outlet, and the ultraviolet lamp is installed in the inside of the blow-off reaction tube.

[0007] Further, the blow-off reaction tube includes: outer glass tube and inner glass tube, the outer glass tube is sleeved on the outside of the inner glass tube, and is not communicated with each other;And the gas overflow outlet, gas-liquid inlet are respectively arranged at the top and the side below of the outer glass tube, the bottom of the outer glass tube is ultraviolet lamp installation port, the lamp holder of the ultraviolet lamp is fixed in the ultraviolet lamp installation port, and the ultraviolet lamp core is inserted into the inner glass tube.

[0008] Preferably, the outer layer of the glass tube is provided with heating wire fixing points on both sides of the outer layer of the glass tube to install the heating wires.

[0009] The valve installed between the peristaltic pump, the ozone generation assembly, the air pump and the stripping reaction tube is a two-position three-way valve, which is divided into a third two-position three-way valve and a fourth two-position three-way valve; one end of the pipeline connected with the peristaltic pump is connected with the NO end of the fourth two-position three-way valve, the COM end of the fourth two-position three-way valve is connected with the ozone generation assembly, and the NC end is connected with the NO end of the third two-position three-way valve; the COM end of the third two-position three-way valve is connected with the gas-liquid inlet below the stripping reaction tube, and the NC end is connected with one end of the air pump, and the other end of the air pump is used for connecting with air.

[0010] Further, an adjustable flow meter is installed between the air pump and the third two-position three-way valve.

[0011] Further, a first CO2 absorber is installed at one end of the air pump for absorbing CO2 in air.

[0012] Further, the stripping reaction tube is connected with a two-position three-way valve and a decontamination device in sequence and then connected with an NDIR detector; the two-position three-way valve is divided into a first two-position three-way valve and a second two-position three-way valve; the gas overflow outlet of the stripping reaction tube is connected with the COM end of the second two-position three-way valve; the COM end of the first two-position three-way valve is connected with the NO end of the second two-position three-way valve; the NC end of the first two-position three-way valve is connected with one end of the decontamination device; and the other end of the decontamination device is connected with the NDIR detector.

[0013] Further, an ozone absorber is arranged between the stripping reaction tube and the NDIR detector; the ozone absorber is connected with the NC end of the second two-position three-way valve and contains an ozone catalyst to absorb ozone in waste gas; and the remaining waste gas is discharged through the NO end of the first two-position three-way valve.

[0014] Further, the ozone generation assembly comprises an ozone generator, an oxygen generator, a pneumatic three-element and an air compressor; the ozone generator is connected with the oxygen generator; the oxygen generator is connected with the pneumatic three-element through an electromagnetic valve; and the pneumatic three-element is further connected with the air compressor.

[0015] Further, a second CO2 absorber is installed between the ozone generator and the oxygen generator to absorb CO2 in the gas circuit.

[0016] After the above technical scheme is adopted, the utility model has the following effects:

[0017] 1. The utility model discloses a ultraviolet digestion is carried out through the ultraviolet lamp in the blow -off reaction tube, and the ozone generated through the ozone generating component is oxidized, makes ultraviolet digestion and ozone oxidation combine, forms multiple oxidation guarantee, can convert total organic carbon (TOC) more thoroughly, makes the test more efficient, and data is more accurate.

[0018] 2. The utility model discloses using the special blow -off reaction tube as the main reaction place, the inner layer glass tube is mainly used for installing the ultraviolet lamp, the ultraviolet lamp installation mouth of outer layer glass tube lower extreme is used for installing the ultraviolet lamp, and the gas -liquid import is provided below the side, and the gas overflow outlet of top provides overflow passage for the gas of reaction generation.

[0019] 3. The utility model discloses the outside of blow -off reaction tube is provided with heating wire fixed point, through installing heating wire outside the blow -off reaction tube, can combine high -temperature digestion on the basis of ultraviolet digestion and ozone oxidation, further converts total organic carbon (TOC), improves the test efficiency, and ensures the stability of data. DRAWINGS

[0020] Fig. 1 It is the whole structure schematic diagram of the utility model.

[0021] Fig. 2 It is the structure schematic diagram of the utility model blow -off reaction tube.

[0022] Main component symbol:

[0023] 1: blow -off reaction tube, 101: outer layer glass tube, 1011: gas overflow outlet, 1012: ultraviolet lamp installation mouth, 1013: gas -liquid import and export, 1014: heating wire fixed point, 102: inner layer glass tube, 103: ultraviolet lamp, 1031: lamp holder, 1032: ultraviolet lamp core, 104: heating wire, 2: air pump, 3: peristaltic pump, 4: ozone generator, 5: oxygen generator, 6: pneumatic three elements, 7: air compressor, 8: electromagnetic valve, 9: first two position three -way valve, 10: second two position three -way valve, 11: third two position three -way valve, 12: fourth two position three -way valve, 13: ozone absorber, 14: first CO2 absorber, 15: second CO2 absorber, 16: adjustable flowmeter. CONCRETE IMPLEMENTING METHOD

[0024] In order to make the purpose, technical scheme and advantage of the utility model more clear and obvious, the following combines the drawing and example, and further detailedly explains the utility model.

[0025] In the description of the utility model, it is explained that the terms "first", "second", "third" and the like are only used for the purpose of description, and can not be understood as indicating or implying relative importance.

[0026] As Figs. 1-2The utility model discloses a kind of high-efficiency oxidation reaction devices for TOC determination, comprising: blow-off reaction tube 1, ultraviolet lamp tube 103, gas pump 2, peristaltic pump 3, ozone generation component and several valves.

[0027] Peristaltic pump 3 is provided with two ends, one end is connected with the gas-liquid inlet 1013 below the side of blow-off reaction tube 1 through valve, the other end is connected with pure water / standard solution / sample / medicament / waste liquid and so on multiple valve point, control the in and out of sample / standard solution / medicament / waste liquid, ozone generation component and gas pump 2 are also connected with the gas-liquid inlet 1013 below the side of blow-off reaction tube 1 through valve.

[0028] The top of blow-off reaction tube 1 is gas overflow outlet 1011, and ultraviolet lamp 103 is installed in the inside of blow-off reaction tube 1.

[0029] Among them, blow-off reaction tube 1 includes: outer glass tube 101 and inner glass tube 102, outer glass tube 101 is sleeved on the outside of inner glass tube 102, and is not communicated with each other;And gas overflow outlet 1011, gas-liquid inlet 1013 are arranged at the top and side below of outer glass tube 101 respectively, the bottom of outer glass tube 101 is ultraviolet lamp installation port 1012, the lamp holder 1031 of ultraviolet lamp 103 is fixed in ultraviolet lamp installation port 1012, and the ultraviolet lamp core 1032 is inserted into inner glass tube 102, so as to protect the ultraviolet lamp core 1032 from contacting liquid.

[0030] In the embodiment, heating wire fixing point 1014 is arranged on the both sides of the outside of outer glass tube 101, to install heating wire 104, for heating digestion in reaction process.

[0031] In the embodiment, the valve installed between peristaltic pump 3, ozone generation component, gas pump 2 and blow-off reaction tube 1 is two-position three-way valve, and is divided into: third two-position three-way valve 11 and fourth two-position three-way valve 12, one end of the pipeline connected with peristaltic pump 3 is connected with the NO end of fourth two-position three-way valve 12, and the COM end of fourth two-position three-way valve 12 is connected with ozone generation component, and the NC end is connected with the NO end of third two-position three-way valve 11.The COM end of third two-position three-way valve 11 is connected with the gas-liquid inlet 1013 below the side of blow-off reaction tube 1, and the NC end is connected with one end of gas pump 2, and the other end of gas pump 2 is connected with air.

[0032] Meanwhile, in the embodiment, adjustable flowmeter 16 is installed between gas pump 2 and third two-position three-way valve 11.Gas pump 2 is installed with first CO2 absorber 14 at one end connected with air, to absorb CO2 in air.Gas pump 2 provides blow-off gas for blow-off CO2 in reaction process, and adjustable flowmeter 16 can control the size of blow-off gas.

[0033] In addition, in the embodiment, the stripping reaction tube 1 is connected to two three-way valves and a foreign matter removing device (not shown in the figure) in sequence and is externally connected to an NDIR detector. The two three-way valves are divided into a first two-way valve 9 and a second two-way valve 10. The gas overflow outlet 1011 of the stripping reaction tube 1 is connected to the COM end of the second two-way valve 10. The COM end of the first two-way valve 9 is connected to the NO end of the second two-way valve 10. The NC end of the first two-way valve is connected to one end of the foreign matter removing device. The other end of the foreign matter removing device is externally connected to the NDIR detector. The foreign matter removing device is a container containing copper particles, drying agents and the like, which is used to remove acid vapor and water vapor.

[0034] Meanwhile, in the embodiment, an ozone absorber 13 is further arranged between the stripping reaction tube 1 and the externally connected NDIR detector. The ozone absorber 13 is connected to the NC end of the second two-way valve 10 and contains an ozone catalyst to absorb ozone in the waste gas. The remaining waste gas is discharged through the NO end of the first two-way valve 9.

[0035] In addition, in the embodiment, the ozone generation assembly includes an ozone generator 4, an oxygen generator 5, a pneumatic three-element 6 and an air compressor 7. The ozone generator 4 is connected to the oxygen generator 5. The oxygen generator 5 can remove impurity gases such as nitrogen in the air, so that the gas source input into the ozone generator 4 is purer. The ozone generator 4 converts the input oxygen into ozone and delivers it into the stripping reaction tube 1. The oxygen generator 5 is connected to the pneumatic three-element 6 through a solenoid valve 8. The pneumatic three-element 6 is further connected to the air compressor 7. The pneumatic three-element 6 can adjust the pressure of the air delivered by the air compressor 7.

[0036] Among them, a second CO2 absorber 15 is installed between the ozone generator 4 and the oxygen generator 5 to absorb CO2 in the gas path.

[0037] The working process of the high-efficiency oxidation reaction device for TOC determination is as follows:

[0038] First, the water quality sample to be measured and the reagent are pumped into the stripping reaction tube 1 by the peristaltic pump 3. After the water quality sample to be measured and the reagent are mixed, the inorganic carbon is directly converted into CO2. At this time, the air pump 2 pumps the air from which CO2 is removed into the stripping reaction tube 1. The converted CO2 is stripped. The stripped CO2 enters the externally connected NDIR detector through the gas overflow outlet 1011 of the stripping reaction tube 1 for determination and records the CO2 value at this time.

[0039] Secondly, the oxidant is pumped into the stripping reaction tube 1 through the peristaltic pump 3, and the ultraviolet lamp 103 in the stripping reaction tube 1 and the heating wire 104 outside the stripping reaction tube 1 are turned on for oxidation digestion. Then the ozone is introduced into the stripping reaction tube 1 through the ozone generator 4, and the remaining incomplete oxidation of organic carbon is converted into inorganic carbon, and the excess ozone is overflowed from the gas overflow outlet 1011 of the stripping reaction tube 1 and is absorbed by the ozone absorber 13.

[0040] Finally, the gas pump 2 is turned on again, the remaining inorganic carbon, i.e. CO2 in the stripping reaction tube 1 is blown out, is detected by the NDIR detector, and the CO2 value at this time is recorded.

[0041] The above describes only the preferred specific implementation of the present application, any skilled person in the art can easily think of changes or replacements within the technical range disclosed by the present application, which should be covered within the protection range of the present application.

Claims

1. A high-efficiency oxidation reaction device for TOC measurement, characterized by comprising: The utility model relates to a kind of ozone stripping reaction tube and ozone stripping reaction tube system, including: Blow-off reaction tube (1), ultraviolet lamp (103), air pump (2), peristaltic pump (3), ozone generation assembly and several valves; The peristaltic pump (3) is provided with two ends, one end is connected with the gas-liquid inlet (1013) below the side of the blow-off reaction tube (1) through the valve, and the ozone generation assembly and air pump (2) are also connected with the gas-liquid inlet (1013) below the side of the blow-off reaction tube (1) through the valve respectively. The top of the blow-off reaction tube (1) is gas overflow outlet (1011), and the ultraviolet lamp (103) is installed inside the blow-off reaction tube (1).

2. A high efficiency oxidation reaction apparatus for TOC measurement as claimed in claim 1, characterized by: The blow-off reaction tube (1) includes: outer glass tube (101) and inner glass tube (102), the outer glass tube (101) is sleeved outside the inner glass tube (102), and they are not communicated with each other; and the gas overflow outlet (1011) and the gas-liquid inlet (1013) are respectively arranged at the top and the side below of the outer glass tube (101), the bottom of the outer glass tube (101) is the ultraviolet lamp installation port (1012), the lamp holder (1031) of the ultraviolet lamp (103) is fixed in the ultraviolet lamp installation port (1012), and the ultraviolet lamp core (1032) extends into the inner glass tube (102).

3. A high efficiency oxidation reactor for TOC measurement as claimed in claim 2, wherein: The two sides of the outer glass tube (101) are provided with heating wire fixing points (1014) to install heating wires (104).

4. The high efficiency oxidation reactor for TOC measurement according to claim 1, characterized in that: The valves installed between the peristaltic pump (3), ozone generation assembly, air pump (2) and the blow-off reaction tube (1) are two-position three-way valves, which are divided into: third two-position three-way valve (11) and fourth two-position three-way valve (12), one end of the pipeline connected with the peristaltic pump (3) is connected with the NO end of the fourth two-position three-way valve (12), the COM end of the fourth two-position three-way valve (12) is connected with the ozone generation assembly, and the NC end is connected with the NO end of the third two-position three-way valve (11). The COM end of the third two-position three-way valve (11) is connected with the gas-liquid inlet (1013) below the side of the blow-off reaction tube (1), the NC end is connected with one end of the air pump (2), and the other end of the air pump (2) is used for connecting with air.

5. A high efficiency oxidation reactor for TOC measurement as claimed in claim 4, wherein: An adjustable flowmeter (16) is installed between the air pump (2) and the third two-position three-way valve (11).

6. A high efficiency oxidation reactor for TOC measurement as claimed in claim 4 wherein: A first CO2 absorber (14) is installed at one end of the air pump (2) for absorbing CO2 in air.

7. A high efficiency oxidation reactor for TOC measurement as claimed in claim 1 wherein: The blow-off reaction tube (1) is connected with two-position three-way valve and impurity removal device in sequence and then connected with NDIR detector, the two-position three-way valve is divided into: first two-position three-way valve (9) and second two-position three-way valve (10), the gas overflow outlet (1011) of the blow-off reaction tube (1) is connected with the COM end of the second two-position three-way valve (10), the COM end of the first two-position three-way valve (9) is connected with the NO end of the second two-position three-way valve (10), the NC end of the first two-position three-way valve (9) is connected with one end of the impurity removal device, and the other end of the impurity removal device is connected with NDIR detector.

8. A high efficiency oxidation reactor for TOC measurement as claimed in claim 7, wherein: The ozone absorber (13) is connected with the NC end of the second two-position three-way valve (10), contains an ozone catalyst and can absorb ozone in the waste gas, and the remaining waste gas is discharged through the NO end of the first two-position three-way valve (9).

9. A high efficiency oxidation reaction apparatus for TOC measurement as claimed in claim 1, wherein: The ozone generator (4) is connected with the oxygen generator (5), the oxygen generator (5) is connected with the pneumatic three-element (6) through the electromagnetic valve (8), and the pneumatic three-element (6) is further connected with the air compressor (7).

10. A high efficiency oxidation reactor for TOC measurement as claimed in claim 9, wherein: A second CO2 absorber (15) is installed between the ozone generator (4) and the oxygen generator (5) to absorb CO2 in the gas path.

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