CN213715053U - Maintenance-free ozone generation and destruction elimination system for chemiluminescence total nitrogen analyzer - Google Patents

Abstract

The utility model relates to a total nitrogen analysis appearance of chemiluminescence produces and destroys elimination system with non-maintaining ozone, including ozone generator, detector and high temperature furnace, ozone generator's ozone exit linkage detector's ozone entry, the reaction gas entry of detector flows in the reaction gas, and the gas outlet intercommunication quartz combustion tube of detector, quartz combustion tube passes the high temperature furnace, the inlet end of quartz combustion tube with give vent to anger the end respectively as for the both sides of high temperature furnace. The utility model discloses the total nitrogen analyzer of chemiluminescence produces and destroys the ozone generator in the elimination system through ultraviolet lamp irradiation oxygen and produces the ozone of high concentration with the non-maintaining ozone, provides the ozone of stable concentration for the detector; the tail gas generated by the detector flows through the high-temperature furnace, and the residual ozone is automatically converted into oxygen at high temperature, so that the health threat of the residual ozone to operators is avoided.

Description

Maintenance-free ozone generation and destruction elimination system for chemiluminescence total nitrogen analyzer

Technical Field

The utility model relates to a nitrogen content analysis technical field, concretely relates to chemiluminescent total nitrogen analysis appearance is with non-maintaining ozone production and destruction elimination system.

Background

When the total nitrogen content in a sample is measured by using a chemiluminescence method, ozone is required to be used, and the principle is as follows: the sample is injected into a quartz combustion tube at a constant speed, under the carrying of argon, the sample is firstly cracked and then undergoes an oxidation reaction with oxygen to generate reaction gas, wherein carbide in the sample generates carbon dioxide, and nitride generates nitric oxide. The reaction gas enters a detector after being dehydrated by a membrane dryer, wherein nitric oxide in the reaction gas reacts with ozone generated by an ozone generator to generate excited nitrogen dioxide, the excited nitrogen dioxide is unstable and returns to a ground state to emit photons, an electric signal in direct proportion to the nitrogen content is generated after the excited nitrogen dioxide is received by a photomultiplier, and the total nitrogen content in the sample can be accurately obtained by using an external standard method.

Ozone is a fishy, pale blue gas, and the limit concentration of acceptable ozone for a human in one hour is 260 μ g/m 3; a1 h activity in 320 ug/m 3 ozone environment resulted in cough, dyspnea and decreased lung function. Ozone can also participate in the reaction of unsaturated fatty acid, amino and other proteins in organisms, so that people who directly contact ozone for a long time have symptoms of fatigue, cough, chest distress and pain, skin wrinkling, nausea and headache, accelerated pulse, memory deterioration, visual deterioration and the like. The chemiluminescence method needs a large amount of ozone for measuring the total nitrogen content in a sample, and the finally discharged gas contains a large amount of ozone, so that the health of an instrument operator is greatly threatened.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to provide a total nitrogen analysis appearance of chemiluminescence produces and destroys elimination system with non-maintaining ozone for ozone produces the problem of threat to the instrument operator when solving the total nitrogen content among the chemiluminescence method survey sample among the prior art.

The utility model provides a total nitrogen analysis appearance of chemiluminescence produces and destroys elimination system with non-maintaining ozone, including ozone generator, detector and high temperature furnace, ozone generator's ozone exit linkage detector's ozone entry, the reaction gas entry of detector flows in the reaction gas, and the quartz combustion tube of gas outlet intercommunication of detector, the quartz combustion tube passes the high temperature furnace, the both sides of high temperature furnace are arranged respectively in the inlet end of quartz combustion tube and the end of giving vent to anger.

Further, the ozone generator comprises a generator shell, an oxygen inlet is formed in the lower end of the generator shell, an ozone outlet is formed in the upper end of the generator shell, a cavity is formed in the generator shell, the oxygen inlet and the ozone outlet are communicated with the cavity, an ultraviolet lamp is arranged in the cavity, and the top end of the generator shell is connected with the ultraviolet lamp in a sealing mode.

Furthermore, a flowmeter is arranged at the oxygen inlet, and the flow rate of the oxygen is 100ml/min-1000 ml/min.

Further, the lower extreme of generator housing is the arc structure, generator housing is the test tube type structure, generator housing is the quartz glass material, generator housing outside parcel metal copper foil or aluminium foil prevents the leakage of ultraviolet ray.

Adopt above-mentioned the utility model discloses technical scheme's beneficial effect is:

the utility model discloses the total nitrogen analyzer of chemiluminescence produces and destroys the ozone generator in the elimination system through ultraviolet lamp irradiation oxygen and produces the ozone of high concentration with the non-maintaining ozone, provides the ozone of stable concentration for the detector; the tail gas generated by the detector flows through the high-temperature furnace, and the residual ozone is automatically converted into oxygen at high temperature, so that the health threat of the residual ozone to operators is avoided.

Drawings

FIG. 1 is a schematic view of the structure of a maintenance-free ozone generation and destruction elimination system for a chemiluminescent total nitrogen analyzer of the present invention;

in the drawings, the components represented by the respective reference numerals are listed below:

1-detector, 2-high temperature furnace, 3-ozone outlet, 4-ozone inlet, 5-reaction gas inlet, 6-quartz combustion tube, 7-generator shell, 8-oxygen inlet and 9-ultraviolet lamp.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention.

As shown in fig. 1, the utility model provides a total nitrogen analyzer of chemiluminescence produces and destroys elimination system with non-maintaining ozone, including ozone generator, detector 1 and high temperature furnace 2, ozone outlet 3 of ozone generator connects ozone entry 4 of detector 1, reaction gas entry 5 of detector 1 flows in reaction gas, and the gas outlet of detector 1 communicates quartzy combustion tube 6, quartzy combustion tube 6 passes high temperature furnace 2, the inlet end and the end of giving vent to anger of quartzy combustion tube 6 are respectively as for the both sides of high temperature furnace 2.

Specifically, ozone generator includes generator housing 7, generator housing 7's lower extreme sets up oxygen entry 8, and the upper end sets up ozone outlet 3, set up the cavity in generator housing 7, oxygen entry 8 and ozone outlet 3 and cavity intercommunication, set up ultraviolet lamp 9 in the cavity, generator housing 7's top and ultraviolet lamp 9 sealing connection, generator housing 7 is the quartz glass material, 7 outside parcel metal copper foil or aluminium foil of generator housing prevent the leakage of ultraviolet ray.

The working principle of the maintenance-free ozone generation and destruction elimination system for the chemiluminescence total nitrogen analyzer is as follows: oxygen with a stable flow rate of 100ml/min-1000ml/min enters a cavity in a generator shell 7 through an oxygen inlet 8, an ultraviolet lamp 9 of an ozone generator irradiates the oxygen to generate ozone with stable concentration, the ozone enters a detector 1 through an ozone outlet 3, reaction gas flows into a reaction gas inlet 5 of the detector 1, the reaction gas and the ozone react in the detector 1 and complete detection of total nitrogen (the specific detection principle is the prior art, and the detailed description is not provided herein), tail gas generated after detection enters a quartz combustion tube 6 through a gas outlet, and residual ozone is converted into oxygen at a high temperature of 850 ℃ in a high-temperature furnace 2 and then is discharged.

And a flowmeter is arranged at the oxygen inlet 8, the flow of the oxygen is 100ml/min-1000ml/min, the flow of the oxygen is stable, and the ozone with stable concentration is generated.

The lower end of the generator shell 7 is of an arc-shaped structure, and the generator shell 7 is of a test tube type structure.

In conclusion, the chemiluminescence total nitrogen analyzer of the utility model generates high-concentration ozone by irradiating oxygen through the ultraviolet lamp by the ozone generator in the maintenance-free ozone generation and destruction elimination system, and provides stable-concentration ozone for the detector; the tail gas generated by the detector flows through the high-temperature furnace, and the residual ozone is automatically converted into oxygen at high temperature, so that the health threat of the residual ozone to operators is avoided.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims (4)

1. The utility model provides a total nitrogen analysis appearance of chemiluminescence produces and destroys elimination system with non-maintaining ozone which characterized in that, includes ozone generator, detector and high temperature furnace, ozone generator's ozone exit linkage detector's ozone entry, the reaction gas entry of detector flows into the reaction gas, and the gas outlet intercommunication quartz combustion tube of detector, quartz combustion tube passes the high temperature furnace, quartz combustion tube's inlet end and the both sides that the end of giving vent to anger is located the high temperature furnace respectively.

2. The system for generating and destroying ozone for a chemiluminescent total nitrogen analyzer according to claim 1, wherein the ozone generator comprises a generator housing, an oxygen inlet is arranged at the lower end of the generator housing, an ozone outlet is arranged at the upper end of the generator housing, a cavity is arranged in the generator housing, the oxygen inlet and the ozone outlet are communicated with the cavity, an ultraviolet lamp is arranged in the cavity, and the top end of the generator housing is hermetically connected with the ultraviolet lamp.

3. The maintenance-free ozone generation and destruction elimination system for chemiluminescence total nitrogen analyzer according to claim 2, wherein a flow meter is installed at the oxygen inlet, and the flow rate of the oxygen is 100ml/min to 1000 ml/min.

4. The system for generating and destroying ozone for a chemiluminescent total nitrogen analyzer according to claim 2, wherein the lower end of the generator housing is of an arc-shaped structure, the generator housing is of a test tube type structure, the generator housing is made of quartz glass, and a metal copper foil or an aluminum foil wraps the outside of the generator housing to prevent ultraviolet light from leaking.

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