WO2019161613A1

WO2019161613A1 - Detection method and detection device for reaction concentration of gas

Info

Publication number: WO2019161613A1
Application number: PCT/CN2018/083736
Authority: WO
Inventors: 曹祚
Original assignee: 曹祚
Priority date: 2018-02-24
Filing date: 2018-04-19
Publication date: 2019-08-29
Also published as: CN108375651B; CN108375651A

Abstract

A detection method and detection device for the reaction concentration of gas, wherein the detection method comprises the following steps: step 1) detecting in real time total volume flow rates Q₁ and Q₂ of gas reactants before and after a reaction; step 2) calculating a real time volume flow rate difference ΔQ of gas before and after a chemical reaction; step 3) determining the relationship between a volume change value ΔV of the gas before and after the reaction and the volume V of gas to be detected, and calculating a volume flow rate Q₃ of the gas to be detected; step 4) equating each gas reactant to an equivalent reactant according to a ratio of stoichiometric numbers corresponding thereto; and step 5) calculating a gas mass percentage of the gas to be detected. By means of the change in the volume of gas before and after a chemical reaction, the described method solves the problem in existing technology in which detection may only be performed by means of sampling, thereby improving the accuracy and stability of detection.

Description

Method for speculating gas reaction concentration and speculating device

[0001] A method and a detection device for detecting a gas reaction concentration belong to the technical field of concentration detection.

Background technique

[0002] Ozone is an allotrope of oxygen. At normal temperature, ozone is a blue gas with a special odor. Ozone has many uses, and it can deeply treat industrial sewage, domestic sewage and hospital sewage. Remove all kinds of impurities in water, can be sterilized and sterilized; ozone can remove scale and prevent blocking of pipelines; use ozone to sterilize and sterilize residues that are harmful to human body (such as chlorine-sterilized carcinogenic halogenated organic matter), The quality of disinfection of drinking water is very effective. At present, the application of ozone is still accelerating, and the formation of high-quality oxide film in the field of semiconductor manufacturing, the cleaning process of photoresist film, the process of ozone ice making, medical and health, etc. are all inseparable from ultra-high concentration. High purity ozone. The above various uses of ozone are based on the fact that ozone reaches a certain concentration and a certain high purity. Therefore, the development of ozone technology is pursued with high concentration, high purity and low consumption.

[0003] The development of synthetic ozone technology has also been more than one hundred years old. At present, it is widely used that the ozone generator generates oxygen by corona discharge of oxygen or air in the air gap. In order to ensure the use of ozone, ozone production needs to be detected and controlled. The existing detection of ozone concentration is mostly carried out by sampling, but there are certain limitations in sampling detection, and it is difficult to accurately reflect the concentration of ozone in a wide range. At present, the detection of ozone concentration at home and abroad is carried out by a special ozone concentration detector for sampling and analysis, and the ultraviolet analysis method is adopted. In this method, ultraviolet light is generated by an ultraviolet lamp, and other wavelength ultraviolet light is filtered by a light wave filter, and only 253.7 nm is allowed to pass. After passing through the sample photoelectric sensor, it passes through the ozone absorption tank and reaches the photoelectric sensor. The sample photoelectric sensor and the sampled photoelectric sensing signal are compared, and then the mathematical model is used to calculate the concentration. This detection method can ensure a certain accuracy when the ozone concentration is 0 -20 wt%, but the detection accuracy is difficult to ensure when the ozone concentration is 25 wt% or more. Moreover, such detection equipment is expensive and sensitive to impurities, such as ozone gas and ultraviolet light, which are in the form of high-energy substances, especially for high-concentration ozone, which is liable to cause substance burning and oxide focusing, which hinders the purity of the detection space. It is difficult to guarantee an inertia of its test results. For precision instruments, yes It is not always possible to disassemble and maintain it frequently. Therefore, the detection of the ozone industry has always been a big problem.

[0004] Since the current international and domestic ozone production levels are around 10% by weight, there are no instruments in the international and domestic markets that detect more than 30% by weight of ozone. This brings great difficulties to our research and production of ozone concentration exceeding 30wt%. This has forced us to make great efforts to develop testing instruments in this area.

[0005] At present, internationally and internationally, in terms of concentration detection, the detection techniques we have seen are all designed by sampling methods and for detecting the characteristics of substances. According to the content of the test, we can refer to the current concentration detection method as the indirect detection method. Because this method has two conversion processes, one is the recovery of the sample, and the other is the process of converting the material properties and concentration, and the detected data is not directly related to the concentration. From this concept, all current international and domestic concentration detection technologies are introduced indirectly, rather than directly from concentration-related data, such as volume and weight changes. This is puzzling. This is also a development direction that we deserve to be proposed after people have explored and researched.

[0006] Especially in the ozone industry, it is difficult to imagine the relationship between concentration and volume. It is mainly so far that there are no examples and scientific and technical materials related to this research and introduction.

technical problem

[0007] The technical problem to be solved by the present invention is: to overcome the deficiencies of the prior art, to provide a gas reaction that calculates the gas concentration after the reaction by the change of the gas volume before and after the chemical reaction, and is accurate and not affected by the gas concentration. Concentration detection method and detection device.

Problem solution

Technical solution

[0008] The technical solution adopted by the present invention to solve the technical problem is: the method for detecting the reaction concentration of the gas, which is characterized by: comprising the following steps:

[0009] Step 1), in real time, the total volume flow rate of the gaseous reactants before the reaction is measured under the same conditions; wherein each gas reactant is input according to the ratio of the corresponding stoichiometric number in the chemical equation, and the gas mixture after the reaction is measured in real time. Total volume flow G

[0010] Step 2) Calculate the real-time volume flow difference AQ of the gas before and after the chemical reaction, [0011] AQ=IQ _r Q ₂ l;

[0012] Step 3), determining the relationship between the volume change value AV of the gas before and after the reaction and the volume V of the gas to be detected by a chemical equation, and calculating the volume flow rate Q _{3 of the} gas to be detected after the reaction _:

[0014] Step 4), according to the chemical equation in which the chemical reaction occurs, the gas reactants are equivalent to the equivalent reactants according to the ratio of their corresponding stoichiometry, and the average molar mass of the equivalent reactants is calculated.

[0015] Step 5), calculating the gas mass percentage of the gas to be detected:

[0016]

Wherein m is the mass of the liquid product or the fixed product, M; is the molar mass of the gas molecule to be detected.

[0018] Preferably, the same conditions described in step 1) include the same temperature conditions and the same pressure conditions.

[0019] Preferably, there is one and only one gas product of the chemical reaction described in the step 2) or the step 4).

[0020] Preferably, the chemical reaction described in step 2) or step 4) is a compounding reaction.

[0021] A detecting device using the above method for detecting a reaction concentration of a gas, comprising: a generator body, at least one reaction module disposed in the generator body, a power source, and a control device, wherein the reaction module is connected with an intake pipe and The air outlet pipe, the intake pipe and the air outlet pipe are each provided with a detecting module for detecting the volume flow of the gas. The signal output end of the detecting module is connected to the signal output end of the control device, and the reaction module is connected to the power source.

[0022] Preferably, each of the reaction modules includes a plurality of reaction tubes, and two ends of the coolant passages of each reaction tube are respectively connected with an inlet tube and an outlet tube, and two ends of the gas passage of each reaction tube Connect the intake pipe and The outlet pipe, the inner side and the outer side of the gas passage are insulated, and the inner side of the gas passage is connected to the discharge electrode of the power source, and the outer side of the gas passage is connected to the ground of the power source.

[0023] Preferably, the reaction tubes are vertically disposed, the upper end of the cooling liquid passage of the reaction tube is in communication with the liquid outlet tube, and the lower end of the cooling liquid passage is connected with the liquid inlet tube, and the upper end of the gas passage of the reaction tube is connected to the intake pipe. The lower end of the gas passage is in communication with the outlet pipe.

[0024] Preferably, the coolant channel comprises an inner coolant channel and an outer coolant channel, the gas channel is disposed around the inner coolant channel, and the outer coolant channel is disposed around the gas channel;

[0025] The inlet pipe includes an inner coolant inlet pipe and an outer coolant inlet pipe, and the outlet pipe includes an inner coolant outlet pipe and an outer coolant discharge pipe, and the lower end of the inner coolant passage and the inner coolant enter The liquid pipe is connected, the upper end is connected with the inner coolant liquid outlet pipe, the lower end of the outer coolant liquid passage is connected with the outer coolant liquid inlet pipe, and the upper end is connected with the outer coolant liquid discharge pipe.

[0026] Preferably, each of the reaction tubes comprises an outer tube, an intermediate tube and an inner tube which are coaxially arranged from the outside to the inside, and the outer tube and the intermediate tube are spaced apart to form the outer coolant passage. The intermediate tube is spaced apart from the inner tube to form the gas passage, and both ends of the inner tube are open to form the inner coolant passage.

[0027] Preferably, the generator body is a square box body, and the air inlet pipe and the liquid outlet pipe are horizontally disposed on the upper part of the generator body, and the air outlet pipe and the liquid inlet pipe are horizontally disposed at a lower portion of the generator body.

Advantageous effects of the invention

Beneficial effect

[0028]

[0029] Compared with the prior art, the present invention has the following beneficial effects:

[0030] 1. The detection method of the reaction concentration of the gas passes the change relationship of the gas volume before and after the chemical reaction, thereby realizing the detection of a certain gas concentration after the chemical reaction in real time, and solving the problem that the prior art must be detected by sampling. , the accuracy of the detection is improved, and the accuracy of the detection is not affected by the gas concentration, and the operation is convenient when detecting.

[0031] 2. There is one and only one kind of chemical reaction product, thereby facilitating practical application in chemical production, avoiding excessive types of products, and each product interferes with each other during use.

[0032] 3. Under the same temperature conditions and pressure conditions, the volume of the gas is a stable value, and the temperature conditions and pressure conditions are kept the same before and after the real-time measurement, thereby ensuring more accurate concentration detection. [0033] 4. The ozone generating device can monitor the concentration of ozone produced in real time, thereby more accurately grasping the ozone concentration, distributing the ozone according to the concentration of ozone, and applying ozone to different fields respectively to avoid insufficient ozone concentration. Influencing the use of ozone, directly increasing or decreasing the number of reaction modules in the main body of the generator can realize the adjustment of ozone production and facilitate adjustment.

[0034] 5, the reaction tube is vertically arranged, the cooling liquid enters from the lower part of the reaction tube, and the upper part flows out, thereby ensuring that the cooling liquid fills the entire cooling passage and sufficiently cools the entire reaction tube; oxygen enters from the upper end of the gas passage, and the lower end discharges Convection with the coolant to better cool the entire gas passage, and to avoid the high temperature of the coolant at the outlet end of the gas passage leading to ozone decomposition.

[0035] 6. The gas passage is disposed between the outer coolant passage and the inner coolant passage, so that the gas can be cooled better, and the heat generated by the conversion of oxygen into ozone is lost as soon as possible, and the cooling is fast in the form of double liquid cooling. It avoids the decomposition of ozone due to excessive temperature, and further increases the concentration of ozone. Compared with the double cooling form using liquid and gas, the double cooling form of the reaction tube has better cooling effect and faster cooling rate.

[0036] 7. Through the arrangement of the inner tube, the middle tube and the outer tube, a gas passage is formed, an inner coolant passage disposed around the gas passage and an outer coolant passage disposed in the gas passage are simple in structure and convenient to manufacture.

[0037] 8. The intake pipe and the outlet pipe are horizontally disposed on the upper side of the generator body, and the outlet pipe and the inlet pipe are horizontally disposed at the lower part of the generator body, thereby facilitating the disassembly and assembly of the subsequent reaction module, and further setting the reaction The number of modules in a way that regulates ozone production creates conditions.

Brief description of the drawing

DRAWINGS

1 is a schematic front view showing the structure of a chemical reaction device.

2 is a partial enlarged view of a portion A in FIG. 1.

3 is a front cross-sectional view of the reaction tube.

4 is a partial enlarged view of a portion B in FIG. 3.

[0042] FIG. 5 is a front cross-sectional view of the impurity removing device.

6 is a partial enlarged view of a portion C in FIG. 5.

7 is a graph showing the relationship between the dissociation area of oxygen molecules and electron energy.

8 is an electron energy diagram of a plasma in which oxygen molecules are ionized by electric field and ozone is generated. 9 is a graph showing the relationship between average electron energy and reduced electric field strength.

[0047] In the figure: 1, the generator body 2, the internal coolant inlet pipe 3, the external coolant inlet pipe 4, the outlet pipe 5, the intake pipe 6, the external coolant discharge pipe 7, the internal coolant discharge Tube 8, reaction tube 9, inner tube 10, intermediate tube 11, outer tube 12, inner coolant outlet 13, gas inlet 14, outer coolant outlet 15, gas outlet 16, internal coolant Liquid port 17, end cap 18, connecting sleeve 19, impurity removing pot 20, insulating layer 21, heating air outlet tube 22, heating chamber 23, heater 24, wiring port 25, junction box 26, heating intake pipe 27, removing impurities The gas port 28, the impurity removing port 29, the deflector 30, and the heat exchanger.

Invention embodiment

Embodiments of the invention

1 to 9 are preferred embodiments of the present invention, and the present invention will be further described below with reference to FIGS. 1 to 9.

Embodiment 1

[0050] In this embodiment, the chemical reaction occurs in which oxygen is converted to ozone by corona, and the chemical equation of the reaction is: 30 ₂ = 20 _3°

[0051] The method for detecting a gas reaction concentration comprises the following steps:

[0052] Step 1), under the same conditions, real-time measurement of the total volume flow rate of the gas reactant before the reaction Q _h wherein each gas reactant is input according to the ratio of the corresponding stoichiometric number in the chemical equation, and the gas mixture after the reaction is measured in real time. Total volume flow Q _{2 ;}

In the present embodiment, the chemical reaction that takes place is a chemical reaction in which oxygen is converted into ozone. Under the same temperature conditions and pressure conditions, the volume flow rate Q _{h of the} incoming gas is measured in real time to measure the volume flow Q _{2 of the} discharged gas in real time. It is also possible to measure the mass flow rate of the gas before the reaction in real time, and calculate the volume flow rate based on the measured mass flow rate and the density of the gas.

[0054] Step 2), calculating the real-time volume flow difference AQ of the gas before and after the chemical reaction,

[0055] AQ=IQ _r Q ₂ l;

[0056] The chemical equation for the conversion of oxygen to ozone is as follows: 30 ₂ =20 _3° Since the volume of the gas after the chemical reaction is reduced, AQ=Q _r Q ₂ = If the volume of the gas after the chemical reaction increases, AQ = Q ₂ - Q 1

[0057] Step 3), determining the relationship between the volume change value AV of the gas before and after the reaction and the volume V of the gas to be detected by a chemical equation, and calculating the volume flow rate Q _{3 of the} gas to be detected after the reaction _:

[0059] It can be seen from the above chemical equation that every 3L of oxygen can be converted into 2L of ozone, and under the same pressure and temperature conditions, the volume of gas after oxygen is converted into ozone is reduced by 1L, that is, the chemical for converting oxygen into ozone. Reaction, V=2, AV=1, #:

[0060] Q ₃ = 2AQ = 2 (Q "Q ₂ ).

[0061] Step 4), according to the chemical equation in which the chemical reaction occurs, the gas reactants are equivalent to the equivalent reactants according to the ratio of their corresponding stoichiometry, and the average molar mass of the equivalent reactants is calculated.

[0062] Since there are one and only one reactants of the above chemical reaction,

That is, the equivalent reactant, the average molar mass of the equivalent reactant is the molar mass of 0 ₂ ,

[0063] Step 5), calculating the gas mass percentage of the gas to be detected:

[0064]

; (2)

Wherein m is the mass of the liquid product or the fixed product, M; is the molar mass of the gas molecule to be detected; m=0 for the above chemical reaction.

[0066] Bringing the formula (1) into the formula (2),

[0067]

[0068] As shown in FIGS. 1 to 2, the ozone generating apparatus using the above-described gas reaction concentration detecting method includes a generator main body 1 and at least one reaction module disposed in the generator main body 1, and ozone production of each reaction module The amount of the reaction module is 0.5~3kg/h; each reaction module includes a plurality of reaction tubes 8, and two ends of the coolant passages of each reaction tube 8 are respectively connected with an inlet tube and an outlet tube, and a gas passage of each reaction tube 8 The two ends are respectively connected with the air inlet pipe 5 and the air outlet pipe 4, and the inner side and the outer side of the gas passage are insulated, and the inner side of the gas passage is connected to the discharge electrode of the power source, and the outer side of the gas passage is connected to the power ground. Each reaction module of the ozone generating device includes a plurality of reaction tubes 8 , which can adjust the number of reaction modules according to needs, thereby adjusting the output of ozone, and directly increasing or decreasing the number of reaction modules in the main body 1 of the generator to realize ozone production. The adjustment and convenient adjustment, the ozone output of each reaction module is 0.5~3kg/h, which can meet most of the ozone production requirements, and there will be no large gap between the output of the ozone generator and the actual demand, resulting in overcapacity.

[0069] The intake module 5 and the air outlet tube 4 are respectively provided with a detection module, and the detection module is a mass flow meter or a gas flow controller. In this embodiment, the detection module is a mass flow meter. The control device is a PLC controller, and the signal output end of the mass flow meter is connected to the signal input end of the PLC controller. The PLC controller directly calculates the concentration and displays the calculated flow rate on the display screen.

[0070] The generator body 1 is a rectangular parallelepiped case, and the reaction module is disposed in the ozone generator. The coolant passage of each reaction tube 8 includes an inner coolant passage and an outer coolant passage, the gas passage is disposed around the inner coolant passage, and the outer coolant passage is disposed around the gas passage. The inlet pipe includes an inner coolant inlet pipe 2 and an outer coolant inlet pipe 3, and the outlet pipe includes an inner coolant discharge pipe 7 and an outer coolant discharge pipe 6.

[0071] The intake pipe 5, the inner coolant discharge pipe 7 and the outer coolant discharge pipe 6 are horizontally disposed at the upper portion of the generator main body 1, and the intake pipe 5, the inner coolant discharge pipe 7, and the outer coolant are discharged. The left end of the liquid pipe 6 extends out of the generator body 1, and the intake pipe 5, the outer coolant discharge pipe 6, and the inner coolant discharge pipe 7 are sequentially disposed from bottom to top.

[0072] The outlet pipe 4, the internal coolant inlet pipe 2 and the external coolant inlet pipe 3 are horizontally disposed at the lower portion of the generator body 1, and the outlet pipe 4, the internal coolant inlet pipe 2, and the external coolant are introduced. The left end of the liquid pipe 3 extends out of the generator body 1, and the outlet pipe 4, the outer coolant inlet pipe 3 and the inner coolant inlet pipe 2 are sequentially disposed from top to bottom.

[0073] Each of the reaction tubes 8 is vertically disposed, and the upper end of the gas passage of the reaction tube 8 communicates with the intake pipe 5 through a pipe, and the lower end of the gas passage communicates with the gas outlet pipe 4 through a pipe. In the present embodiment, the intake pipe 5 Oxygen is introduced into the interior. The upper end of the inner coolant passage is in communication with the inner coolant discharge pipe 7, and the lower end of the inner coolant passage communicates with the inner coolant inlet pipe 2, thereby circulating the inner coolant in the inner coolant passage, and the outer coolant passage The upper end is connected to the outer coolant outlet pipe 6, the lower end of the outer coolant passage and the outer coolant inlet pipe 3 The connection can thereby circulate the external coolant in the outer cooling passage, thereby ensuring the cooling effect on the gas passage, and avoiding the temperature of the gas in the gas passage being too high, thereby causing the generated ozone to decompose under high temperature conditions. In addition, since the flow direction of the gas is opposite to the flow direction of the inner coolant and the outer coolant, the lower temperature inner coolant and the outer coolant can be brought into contact with the gas having a higher ozone concentration, thereby avoiding the temperature of the gas having a higher ozone concentration. The increase, thereby avoiding the decomposition of ozone, makes the concentration of ozone in the gas outputted by the ozone generating device high, thereby achieving better sterilization or sewage treatment effects.

[0074] The inner side of the gas passage is connected to the discharge electrode of the power source, the ground of the outer side of the gas passage is connected, and the ground of the power source is connected to the ground to discharge in the gas passage, thereby converting oxygen into ozone. In this embodiment, the voltage between the inner side and the outer side of the gas passage is 3000V, oxygen is introduced into the gas passage, and the flow rate of oxygen is 6m ³ /h, thereby ensuring ozone in the gas after the oxygen passes through the reaction tube 8. The concentration of 500g/m ³ or more can meet the requirements of sewage treatment and sterilization.

[0075] As shown in FIGS. 3 to 4, the reaction tube 8 includes an outer tube 11, a middle tube 10, and an inner tube 9, which are coaxially disposed. The inner tube 9 is a circular tube having an open end, and the inner tube 9 is internally cooled. a liquid passage, the inner wall of the intermediate pipe 10 is spaced apart from the outer wall of the inner pipe 9, so that a gas passage is provided between the intermediate pipe 10 and the inner pipe 9 surrounding the inner coolant passage, and the inner wall of the outer pipe 11 is spaced apart from the outer wall of the intermediate pipe 10, Thereby, an outer coolant passage disposed around the gas passage is formed between the outer tube 11 and the intermediate tube 10. Easy to process. In the present embodiment, the outer tube 11, the intermediate tube 10, and the inner tube 9 are made of stainless steel, which can prevent oxidation and can conduct electricity.

The inner tube 9 is provided with an inner coolant outlet port 12 at the upper end and an inner coolant inlet port 16 at the lower end. The lower end of the inner coolant outlet 12 is coaxially disposed in the upper end of the inner tube 9, and the lower end of the inner coolant outlet 12 is sealed from the inner wall of the inner tube 9, and the upper end of the inner coolant inlet 16 is the same The shaft is disposed in the lower end of the inner tube 9, and the upper end of the inner coolant inlet port 16 is also sealed from the inner wall of the inner tube 9, thereby forming an inner coolant passage. The upper end of the inner coolant outlet port 12 communicates with the inner coolant discharge pipe 7, and the lower end of the inner coolant inlet port 16 communicates with the inner coolant inlet pipe 2, and the inner coolant outlet port 12 and the inner coolant The liquid outlet pipe 7 is insulated from each other, and the inner coolant liquid inlet port 16 and the inner coolant liquid inlet pipe 2 are also insulated, that is, between the inner coolant liquid outlet port 12 and the inner coolant liquid outlet pipe 7, and There is no conduction between the coolant inlet port 16 and the internal coolant inlet pipe 2. The middle portion of the inner coolant outlet 12 is provided with a high voltage electrode for connecting a power source, that is, connected to the power discharge electrode. In this embodiment, the power source is a high voltage power source.

[0077] Both ends of the inner tube 9 extend out of the intermediate tube 10, and the lengths of the ends of the inner tube 9 outside the intermediate tube 10 are equal. Both ends of the intermediate tube 10 extend out of the outer tube 11, and the lengths of the ends of the intermediate tube 10 outside the outer tube 11 are equal. In this embodiment, the inner coolant is cooling oil, and the outer coolant is cooling water.

The reaction tube 8 further includes a connecting sleeve 18 and end caps 17 disposed at the upper and lower ends. Two connection sleeves 18 and end caps 17 are provided on each of the reaction tubes 8. The connecting sleeve 18 is sleeved outside the outer tube 11 and coaxially connected with the outer tube 11. The inner diameter of the inner end of the connecting sleeve 18 is smaller than the inner diameter of the outer end, and the inner end of the connecting sleeve 18 is sleeved on the outer end of the outer tube 11 and the outer tube 11 The outer wall is sealed, and the inner end of the connecting sleeve 18 is sealed from the outer wall of the intermediate tube 10 to form an outer coolant passage. The end cap 17 is cylindrical, and the inner end of the end cap 17 extends between the connecting sleeve 18 and the inner tube 9, and the end cap 17 is sealingly connected with the connecting sleeve 18 and the inner tube 9 to form a gas passage.

[0079] The inner wall surrounding the outer end of each connecting sleeve 18 is provided with a gas passage groove, and the gas passage groove of the connecting sleeve 18 at the upper end of the reaction tube 8 communicates with the upper end of the gas passage, and the gas passage of the connecting sleeve 18 at the lower end of the reaction tube 8 The trough is in communication with the lower end of the gas passage. The connecting sleeve 18 at the upper end of the reaction tube 8 is provided with a radial gas inlet 13 which is screwed to the connecting sleeve 18, and the inner end of the gas inlet 13 passes through the gas passage of the connecting sleeve 18 at the upper end. The groove is connected with the upper end of the gas passage; the connecting sleeve 18 at the lower end of the reaction tube 8 is provided with a radial gas outlet port 15 , the gas outlet port 15 is screwed with the connecting sleeve 18 , and the inner end of the gas outlet port 15 passes through the connecting sleeve 18 at the lower end. The gas passage groove communicates with the upper end of the gas passage. The gas inlet port 13 communicates with the intake pipe 5, and the gas inlet port 13 is insulated from the intake pipe 5, and the gas outlet port 15 communicates with the outlet pipe 4, and the gas outlet port 15 is insulated from the outlet pipe 4.

[0080] A coolant tank is disposed around the inner wall of the inner end of each of the connecting sleeves 18. The coolant tank of the connecting sleeve 18 at the upper end of the reaction tube 8 communicates with the upper end of the outer coolant passage, and the connecting sleeve 18 at the lower end of the reaction tube 8 is provided. The coolant tank communicates with the coolant tank at the lower end of the outer coolant passage. A radial outer coolant outlet 14 is disposed on the connecting sleeve 18 at the upper end of the reaction tube 8, and the coolant outlet 14 is screwed to the connecting sleeve 18, and the outer coolant outlet 14 passes through the connecting sleeve at the upper end. The coolant tank of the 18 is connected to the upper end of the outer coolant passage; the connecting sleeve 18 at the lower end of the reaction tube 8 is provided with a radial outer coolant inlet, and the outer coolant outlet is screwed to the sleeve 18, and the outer coolant The liquid outlet 14 communicates with the lower end of the outer coolant passage through the coolant tank of the lower end sleeve 18. The outer coolant liquid outlet 14 is in communication with the outer coolant outlet pipe 6, and the outer coolant inlet port is connected to the outer coolant inlet pipe 3, and the coolant outlet port 14 and the outer coolant outlet pipe 6 are The insulation between the outer coolant inlet port and the outer coolant inlet pipe 3 is insulated.

[0081] In this embodiment, the external coolant inlet port is disposed outside the gas outlet port 15, and the outer coolant outlet port 14 is disposed on the inner side of the gas inlet port 13, which avoids the mutual obstruction of the gas passage and the outer coolant passage when connecting, and facilitates the distinction to avoid connection errors during assembly and affect the cooling effect.

In the present embodiment, the ozone yield per reaction module was 2 kg/h. The production of ozone per reaction module is set in accordance with the yield of each reaction tube 8 and the number of reaction tubes 8. For example, if the ozone production per reaction tube 8 is 40g/h, and each reaction module includes 50 ozone generating tubes, the ozone production per reaction module can be 2kg/h. Ten modules can be connected in parallel to achieve 20kg/h ozone output. It is very convenient to achieve any output demand by paralleling multiple modules.

[0083] A grounding electrode is disposed between the connecting sleeve 18 at the upper end of the reaction tube 8 and the end cap, and the grounding electrode is connected to the power source ground, and the grounding electrode is also connected to the intermediate tube 10.

[0084] As shown in FIGS. 5-6: The present invention further provides a de-doping device comprising a vertical disposing tank 19, and a supporting leg is disposed on a lower side of the de-tiring tank 19, thereby removing The miscellaneous cans 19 are spaced from the ground to facilitate the installation of the pipes, and to prevent the loss of heat from the contact of the miscellaneous cans 19 with the ground. The gas removal port of the impurity removing device 28 is connected to the intake pipe 5 of the ozone generating device.

[0085] The inner chamber of the impurity removing tank 19 is provided with a heating chamber 22 and a heat exchange chamber in this order from top to bottom, and a heat exchanger 30 is disposed in the heat exchange chamber. A waste removing port 28 is disposed coaxially with the lower side of the miscible tank 19, and a radial exhaust gas inlet port 27 is provided at the bottom end side of the miscible tank 19. The tube inlet of the heat exchanger 30 is in communication with the degassing inlet 27, and the shell outlet of the heat exchanger 30 is in communication with the heating chamber 22 via a heated inlet tube 26, which also passes through the heating outlet 21 and the heat exchanger 30. The tube inlet is connected, and the tube outlet of the heat exchanger 30 is in communication with the impurity removal port 28. The incoming gas and the exhausted gas are exchanged in the heat exchanger 30, thereby realizing the recovery of the heat of the exhaust gas, avoiding the waste of energy, and also preheating the incoming gas so that the gas is in the heating chamber. The temperature can be raised to a predetermined temperature as soon as possible, so that combustible gas such as carbon monoxide, methane or acetylene mixed in oxygen can be burned to remove impurities in the gas, and the operation is convenient and the energy consumption is small. The gas introduced into the tube and shell of the heat exchanger 30 can be set as needed, or the incoming gas can be introduced into the heating chamber 22 through the tube, and the heated gas is discharged through the shell side. The heat exchanger 30 can also be replaced by a heat exchange coil, that is, the incoming gas passes through the heat exchange coil and enters the heating chamber 22, and the heat exchanged gas is directly discharged through the heat exchange chamber.

[0086] The heating chamber 22 is provided with a heater 23, the upper side of the heater 23 is provided with a junction box 25, the lower side of the junction box 25 is sealed, and the upper end side of the impurity removing tank 19 is provided with a radial wiring port 24, the power supply The line enters through the wiring port 24 It enters the impurity removing tank 19 and is connected to the junction box 25. In the present embodiment, the heater 23 is a cluster heater, and the heating rate of the gas is fast. The heater 23 can also be replaced with an electric heating tube or a resistance wire.

[0087] A central baffle 29 is disposed in the middle of the heating chamber 22, and the side of the deflector 29 is sealed from the heating chamber 22. The deflector 29 includes a horizontally disposed annular plate and a circular plate on the lower side of the annular plate. The upper portion of the inner cavity of the miscellaneous can 19 is provided with a closed cylinder at the lower end to form a heating chamber 22, and the upper end of the cylinder is spaced apart from the lower side of the junction box 25. The annular plate is horizontally disposed in the middle of the cylinder, and the side portion of the annular plate is sealed with the middle portion of the cylinder, and the circular plates on the upper and lower sides are spaced apart from the annular plate, and the diameter of the circular plate is equal to or slightly smaller than the inner diameter of the annular plate. Therefore, the gas entering the heating chamber 22 can be turbulent, the stroke of the gas in the heating chamber 22 is increased, the heating time of the gas is prolonged, the gas is heated sufficiently and the specified temperature is reached, thereby ensuring complete gas removal.

[0088] New theories and experiments prove that the excessively high electric field strength Td, when the average energy of the electrons is greater than 20 ev, the excessive application of energy will be transferred by heat, and the thermal decomposition of ozone will occur. The ionization of oxygen molecules is excited into active particles, and the formation of ozone molecules by collision does not help much. Microscopically, when the oxygen molecules get less than 20 ev, the electric field strength is not too high. According to the new theory, a condition is designed in which a relatively low electric field strength is used, which is 300-700 Td. The average distance of the molecules in the physical space is 510, and the length of the channel is 800 mm. The utility model also provides a plurality of uniform discharge channels of active free electrons, which reduces the diameter of the micro-discharge column and increases the density of the electric column by 2 to 3 times, and the equivalently greatly increases the discharge area, which can greatly improve the dynamic effect of oxygen molecular dissociation. Oxygen molecular dissociation, ionization and three-body collision generation Ozone plasma reaction process is represented by the following formula:

O ₂ (x ³ Eg )+e^O ₂ (A ³ Eu ⁺ ) +e

O ( ³ P) +0 ( ³ P) +e

O ₂ (x ³ Eg )+e^O ₂ (B ³ EU )+e

0( 'D)+0( ³ P)+e

O ₂ (x ³ Eg-)+e 0 ₂ (A ³ JTU ⁺ ) +e

O ( ³ P) +0 ⁺ ( 'S °) +2e

O+ O ₂ +M^O ₃ +M^O ₃ +M

[0096] As shown in FIG. 7, the oxygen molecules have a maximum dissociation cross-sectional area when the electron energy is about 20 ev. The 20 ev electron energy is 0 ₂ (x ³ I:g - ) 0 ₂ (B ³ I:u - ) is more than twice as long as the forbidden transition O ₂ (x ³ I:g ) 0 ₂ (A ³ [u ⁺ ) of 3 More than one. Experiments show that the electron energy of 20 ev should be the boundary value of high concentration and low power.

[0097] As shown in FIG. 8 : the electric field strength expressions of the dielectric and air gap electric fields in the discharge channel are respectively

Is the dielectric constant of the dielectric,

1 _d

For the thickness of the medium,

For the air gap distance,

It is the dielectric constant of the air gap. It can be seen from equation (4) that the electric field strength of the air gap increases with the increase of U, with

Increase and decrease

The decrease increases.

[0101] As shown in FIG. 9, the electric field strength of the electron average energy of 700 deg of 20 ev can be satisfied. It is worth pointing out that the above are only the basic conditions for the conversion of oxygen molecules to ozone, but not all conditions. Research shows that electricity Field application is not the only provider of active particles, nor is it the optimal dynamics of all active particles. Cold non-equilibrium thermal plasmas require the induction of other activations. The conditions set above also verify the correctness of this inference.

[0102] According to the above design conditions, a sophisticated air-gap discharge ozone large-capacity industrial generator was designed and developed, resulting in an ultra-high ozone concentration of 660 g/Nm3 (40 wt%), which directly produced ozone concentration by the ozone generator. The highest value ever seen in the world, power consumption S

12k—

At this ultra-high concentration, the power consumption is currently the lowest in the world. The appearance of this ultra-high concentration and low power consumption fully proves the correctness of the theory and modeling of micro-discharge, and makes a big step in the theory and technology of ozone discharge. Achieving a rise in concentration and a simultaneous decline in power consumption have opened the door to low-cost preparation of ozone. The intended effects of the present invention are achieved.

Example 2

In the present embodiment, the chemical reaction that occurs is that nitrogen and hydrogen are converted to ammonia by corona, and the chemical equation of the reaction is:

[0105] N ₂ + 3H ₂ ^ ₂ NH _3° A mixed gas of nitrogen and hydrogen is introduced through the intake pipe 5, and the gas discharged from the gas outlet pipe 4 is a mixed gas of nitrogen, hydrogen, and ammonia.

[0106] A method for detecting a gas reaction concentration, comprising the steps of:

[0107] Step 1), real-time measurement of the total volume flow rate of the gaseous reactants before the reaction Q _h under the same conditions, wherein each gas reactant is input according to the ratio of the corresponding stoichiometric number in the chemical equation, and the gas mixture after the reaction is measured in real time. Total volume flow Q _{2 ;}

In the present embodiment, the chemical reaction that occurs is the conversion of nitrogen and hydrogen into ammonia by corona. Under the same temperature conditions and pressure conditions, the volume flow rate Q _{h of the} incoming gas is measured in real time to measure the volume flow Q _{2 of the} discharged gas in real time. It is also possible to measure the mass flow rate of the gas before the reaction in real time, and calculate the volume flow rate based on the measured mass flow rate and the density of the gas. Since the volume ratio of N ₂ H ₂ participating in the reaction is 1:3, the volume flow ratio of N ₂ fPH ₂ in the total volume flow rate of the gaseous reactant before the reaction is 1:3.

[0109] Step 2), calculating the real-time volume flow difference AQ of the gas before and after the chemical reaction,

[0110] AQ=IQ _r Q ₂ l;

[0111] The chemical equation for the synthesis of ammonia is as follows: N ₂ + 3H ₂ ^ ₂ NH _{3 °} due to the reaction of the chemical reaction gas The volume is reduced, therefore, AQ=Q _r Q ₂ =

[0112] Step 3), determining the relationship between the volume change value AV of the gas before and after the reaction and the volume V of the gas to be detected by a chemical equation, and calculating the volume flow rate Q _{3 of the} gas to be detected after the reaction _:

[0113] ¥ ^ AQ

% two

m

[0114] It can be seen from the above chemical equation that each 1L of N^P3LH ₂

The reaction can be converted to 2L of NH ₃ , and under the same pressure and temperature conditions, the volume of the gas after the reaction is reduced by 2L, that is, for the chemical reaction of ammonia, V=2, AV=2, which gives:

Q ₃ =AQ=Q _r Q ₂ = (5)

[0116] Step 4), according to the chemical equation in which the chemical reaction occurs, the gas reactants are equivalent to the equivalent reactants according to the ratio of their corresponding stoichiometric numbers, and the average molar mass of the equivalent reactants is calculated. My [0117] Since the reactant of the above chemical reaction is N ₂ H ₂ and the volume ratio is 1:3, the average molar mass of the equivalent reactant M _fl = (14 g/mol*2+2g/mo\*3) / (1+3)

[0118] Step 5), calculating the gas mass percentage of the gas to be detected:

[0119]

(6)

[0121] Bringing the formula (5) into the formula (6),

Example 3

[0124] Example 3 Example distinction 1 in that: the ozone concentration after the reaction tube 8 contained in 500g / m or more voltage gas channels inside and outside of 2000V, the gas flow rate of 4m ³ / h, so that the oxygen through ³ . The inner coolant is cooling water and the outer coolant is cooling oil.

Example 4

[0126] The difference between the fourth embodiment and the first embodiment is that the voltage inside and outside the gas passage is 1500 V, and the gas flow rate is lm ³ /h, so that the concentration of ozone contained in the oxygen after passing through the reaction tube 8 is 500 g/m ³ or more. . Both the inner coolant and the outer coolant are cooling oils.

Example 5

The difference between Example 5 and Example 1 is that the ozone production per reaction module is 0.5 kg/h, that is, the ozone production per hour is increased or decreased by 0.5 kg per increase or decrease of one reaction module. Both the inner coolant and the outer coolant are cooling water.

Example 6

The difference between Example 6 and Example 1 is that the ozone production per reaction module is 1.5 kg/h, that is, the ozone production per hour is increased or decreased by 1.5 kg per increase or decrease of one reaction module.

Example 7

The difference between Example 7 and Example 1 is that the ozone production per reaction module is 2.5 kg/h, that is, the ozone production per hour is increased or decreased by 2.5 kg per increase or decrease of one reaction module.

Example 8

The difference between Example 8 and Example 1 is that the ozone production per reaction module is 3 kg/h, that is, the ozone production per hour is increased or decreased by 3 kg per increase or decrease of one reaction module.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the scope of the present invention. Any person skilled in the art may use the above-disclosed technical contents to change or modify the equivalent changes. An equivalent embodiment. However, any simple modifications, equivalent changes and modifications made to the above embodiments in accordance with the technical spirit of the present invention are still within the scope of protection of the present invention.

Claims

Claim

[Claim 1] A method for detecting a gas reaction concentration, comprising: the following steps:

Step i), real-time measurement of the total volume flow rate of the gaseous reactants before the reaction under the same conditions; wherein each gas reactant is input according to the ratio of the corresponding stoichiometric number in the chemical equation, and the total volume of the gas mixture after the reaction is measured in real time. Flow rate G _{2 ;}

Step 2) Calculate the real-time volumetric flow difference AQ of the gas before and after the chemical reaction,

AQ=IQ _r Q ₂ l;

Step 3), determining the relationship between the volume change value AV of the gas before and after the reaction and the volume V of the gas to be detected by a chemical equation, and calculating the volume flow rate Q _{3 of the} gas to be detected after the reaction _:

V Ben AQ

Step 4), according to the chemical equation in which the chemical reaction occurs, each gas reactant is equivalent to the equivalent reactant according to the ratio of its corresponding stoichiometric number, and the average molar mass M _{0 of the} equivalent reactant is calculated _;

Step 5), calculate the gas mass percentage of the gas to be detected:

Where m is the mass of the liquid product or the fixed product, M; is the molar mass of the gas molecule to be detected.

[Claim 2] The method for detecting a gas reaction concentration according to claim 1, wherein the same conditions described in the step 1) include the same temperature conditions and the same pressure conditions.

[Claim 3] The method for detecting a gas reaction concentration according to claim 1, wherein: step 2 Or there is one and only one gas product of the chemical reaction described in step 4).

[Claim 4] The method for detecting a gas reaction concentration according to claim 1, wherein the chemical reaction described in the step 2) or the step 4) is a compounding reaction.

[Claim 5] The method for detecting a gas reaction concentration according to claim 3, wherein the chemical reaction described in the step 2) or the step 4) is a compounding reaction.

[Claim 6] A detecting device for detecting a gas reaction concentration according to any one of claims 1 to 5, characterized by comprising a generator body (1) and a generator body (1) At least one reaction module, a power source and a control device, the reaction module is connected with an intake pipe (5) and an air outlet pipe (4), and the intake pipe (5) and the air outlet pipe (4) are provided with a detection for detecting a volume flow of the gas. The module, the signal output end of the detection module is connected to the signal output end of the control device, and the reaction module is connected to the power source.

[Claim 7] The detecting device according to claim 6, wherein each of the reaction modules comprises a plurality of reaction tubes (8), and the two ends of the coolant channels of each of the reaction tubes (8) are respectively The inlet pipe and the outlet pipe are connected, and the gas passages of each reaction pipe (8) are respectively connected with an inlet pipe (5) and an outlet pipe (4), and the inner side and the outer side of the gas passage are insulated, and the inner side of the gas passage is provided. Connect the discharge electrode of the power supply, and connect the outside of the gas channel to the ground of the power supply.

[Claim 8] The detecting device according to claim 7, wherein: the reaction tubes (8) are vertically disposed, and the upper end of the coolant passage of the reaction tube (8) communicates with the liquid outlet tube, and the coolant The lower end of the passage is in communication with the inlet pipe, the upper end of the gas passage of the reaction tube (8) is in communication with the intake pipe (5), and the lower end of the gas passage is in communication with the outlet pipe (4).

[Claim 9] The detecting device according to claim 7, wherein: the coolant channel comprises an inner coolant channel and an outer coolant channel, the gas channel is disposed around the inner coolant channel, and the outer coolant channel is surrounded Gas passage setting;

The inlet pipe comprises an inner coolant inlet pipe (2) and an outer coolant inlet pipe (3), and the outlet pipe comprises an inner coolant discharge pipe (7) and an outer coolant discharge pipe (6), The lower end of the inner coolant passage is in communication with the inner coolant inlet pipe (2), the upper end is in communication with the inner coolant discharge pipe (7), and the lower end of the outer coolant passage is connected to the outer coolant inlet pipe (3), the upper end Connect to the external coolant outlet pipe (6).

[Claim 10] The detecting device according to claim 7, wherein each of the reaction tubes (8) includes an outer tube (11) and an intermediate tube which are coaxially arranged from the outside to the inside ( 10) and an inner tube (9), the outer tube (11) is spaced apart from the intermediate tube (10) to form the outer coolant passage, and the intermediate tube (10) is spaced apart from the inner tube (9) to form the gas passage The two ends of the inner tube (9) are open to form the inner coolant passage.

[Claim 11] The detecting device according to claim 6, wherein: the generator body (1) is a square box, and the intake pipe (5) and the liquid outlet pipe are horizontally disposed on the generator body. (1) The upper part, the outlet pipe (4) and the inlet pipe are horizontally placed at the lower part of the generator body (1).