Chlorine analyzing apparatus

Abstract

The present invention relates to a chlorine analyzing apparatus comprising mainly a reaction tube (1) of a double tube structure comprising an inner tube (11) for receiving a sample and an outer tube (14) for recovering hydrogen chloride; an electric furnace (9) having a reaction tube insertion hole into which the reaction tube is inserted, which is equipped with a heater disposed around the reaction tube insertion hole; and a titration cell (3) for receiving acetic acid as an electrolyte and subjecting hydrogen chloride withdrawn from the reaction tube (1) to coulometric titration, said analyzing apparatus further comprising a deodorization tube (4) disposed on a rear stage side of the titration cell (3) for thermally decomposing a vapor of acetic acid discharged from the titration cell, which is fitted into the electric furnace (9).

Description

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a perspective view showing an electric furnace, a reaction tube and a deodorization tube provided in a chlorine analyzing apparatus of the present invention.

FIG. 2 is a vertical sectional view and a horizontal sectional view showing a structure of an electric surface provided in a chlorine analyzing apparatus of the present invention.

FIG. 3 is a flow diagram schematically showing a whole structure of a chlorine analyzing apparatus of the present invention.

Claims

1. A chlorine analyzing apparatus for measuring an amount of chlorine contained in a sample by subjecting hydrogen chloride generated by heating the sample to coulometric titration, which apparatus comprises mainly a reaction tube of a double tube structure comprising an inner tube with an inlet port for air or oxygen for receiving the sample, and an outer tube with a sampling gas outlet port for recovering hydrogen chloride, the reaction tube being capable of allowing a gas to be flowed from the inner tube to the outer tube;an electric furnace having a reaction tube insertion hole into which the reaction tube is fitted, which is equipped with a heater disposed around the reaction tube insertion hole; anda titration cell receiving acetic acid as an electrolyte for subjecting hydrogen chloride withdrawn from the reaction tube to coulometric titration,said apparatus further comprising a deodorization tube disposed on a rear stage side of the titration cell for thermally decomposing a vapor of acetic acid discharged from the titration cell, which is fitted into the electric furnace.

2. A chlorine analyzing apparatus according to claim 1, wherein the electronic furnace is provided with a deodorization tube insertion hole opened at an upper end of the electric furnace, and the deodorization tube is constituted from a U-shaped tube provided at an upper end thereof with a gas inlet port and a gas outlet port, and detachably fitted into the deodorization tube insertion hole of the electric furnace from above.

3. A chlorine analyzing apparatus according to claim 2, wherein the electric furnace is provided with the reaction tube insertion hole opened at an upper end of the electric furnace, and the reaction tube is provided at a head portion of the inner tube with the inlet port for air or oxygen and at an upper portion of the outer tube with the sampling gas outlet port, and detachably fitted into the reaction tube insertion hole of the electric furnace from above.

4. A chlorine analyzing apparatus according to claim 1, wherein the deodorization tube is filled with a heat-resistant filler.

5. A chlorine analyzing apparatus according to claim 2, wherein the deodorization tube is filled with a heat-resistant filler.

6. A chlorine analyzing apparatus according to claim 3, wherein the deodorization tube is filled with a heat-resistant filler.

7. A chlorine analyzing apparatus according to claim 1, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.

8. A chlorine analyzing apparatus according to claim 2, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.

9. A chlorine analyzing apparatus according to claim 3, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.

10. A chlorine analyzing apparatus according to claim 4, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.

11. A chlorine analyzing apparatus according to claim 5, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.

12. A chlorine analyzing apparatus according to claim 6, wherein the titration cell has a discharge port to which a cooler for cooling a vapor of acetic acid discharged from the titration cell is fitted.