Device for converting nitrite into nitrous oxide for purification and method thereof

A nitrite and nitrous oxide technology, applied in the directions of nitrous oxide, nitrogen oxides/oxyacids, etc., can solve the problem of difficulty in tracing pollution sources, avoid the influence of air or other impurities, and the method is simple and convenient. Easy-to-use effects

Inactive Publication Date: 2013-01-23
CHINA UNIV OF GEOSCIENCES (WUHAN)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

This also leads to NO 2 - Determination of sources and transformations

Method used

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  • Device for converting nitrite into nitrous oxide for purification and method thereof
  • Device for converting nitrite into nitrous oxide for purification and method thereof

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Embodiment Construction

[0044] The present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but the protection content of the present invention is not limited to the following embodiments.

[0045] Such as figure 1 As shown, the device for converting nitrite into nitrous oxide and purifying it,

[0046] It includes sample reactor (1), first cold trap T1 (4), second cold trap T2 (5), first chemical trap C1 (6), second chemical trap C2 (7), third cold trap T3 (8), the fourth cold trap T4 (9), N 2 O sample collection tube (10) and vacuum pump (15), the sample reactor includes a sample reactor body, the top of the sample reactor body is provided with a main inlet, and the side is provided with a side inlet 1-1 and Outlet 1-2, the main inlet is provided with a matching cock 1-3, and the lower part of the cock is provided with a """-shaped through hole, which can be rotated to match the outlet to realize The opening and closing of the outl...

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Abstract

The invention relates to a device for converting nitrite into nitrous oxide for purification and a method thereof. The device comprises a sample reactor, a first cold trap, a second cold trap, a first chemical trap, a second chemical trap, a third cold trap, a fourth cold trap, a N2O sample collection pipe and a vacuumizing system, wherein a discharge port end of the sample reactor is connected with the first cold trap through a conduit; the first cold trap, the second cold trap, the first chemical trap, the second chemical trap, the third cold trap and the fourth cold trap are connected end to end through a conduit to form a main pipeline; a branch is arranged on the main pipeline behind the fourth cold trap; and the N2O sample collection pipe is arranged on the branch. The device can extract and purify nitrite or a sample containing nitrite such as natural water to obtain N2O which can be directly delivered to a gas mass spectrometer for testing the N and O isotopes; and moreover, the influence of air or other impurities can be effectively avoided in N2O conversion and purification processes, and the operation is convenient.

Description

technical field [0001] The invention relates to a device and method for converting nitrite into nitrous oxide and purifying it, and belongs to the field of chemical reaction purification devices. Background technique [0002] Nitrite (NO 2 - ) widely exists in the environment, and is a common component in gaseous water, surface water and groundwater, as well as in animals, plants and food. Nitrite (NO 2 - ) inorganic salt compound mainly refers to sodium nitrite. Sodium nitrite is white to light yellow powder or granular, slightly salty, soluble in water. It looks and tastes similar to table salt and is widely used in industry, agriculture, and construction. For example, it is allowed to be used as an additive in a limited amount in meat products, and its function is to make meat and meat products present a good color. In canned and fermented foods, because the anaerobic environment is likely to cause the growth of Clostridium botulinum and lead to poisoning incidents...

Claims

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Application Information

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IPC IPC(8): C01B21/22
Inventor 方晶晶马传明刘存富岳向冰
Owner CHINA UNIV OF GEOSCIENCES (WUHAN)
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