System and process for condensing and recovering nitrogen tetroxide waste gas resource

A technology of dinitrogen tetroxide and condensation recovery, applied in inorganic chemistry, vapor condensation, nitrogen compounds, etc., can solve problems such as the loss of meaning of condensation recovery, and achieve the effect of improving operating efficiency and improving recovery efficiency.

Pending Publication Date: 2018-05-22
中国人民解放军63605部队 +1
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The difficulty of condensate recovery of dinitrogen tetroxide is that the technical indicators of recovered products must meet the requirements of n...

Method used

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  • System and process for condensing and recovering nitrogen tetroxide waste gas resource
  • System and process for condensing and recovering nitrogen tetroxide waste gas resource
  • System and process for condensing and recovering nitrogen tetroxide waste gas resource

Examples

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Embodiment 1

[0042] see figure 1 , a system for double-cycle condensation recovery of dinitrogen tetroxide waste gas resources, including a condensation heat exchanger 6, a gas-liquid separator 7, an electric control valve 8, a condensate collection tank 9, a low-temperature chiller 10, a circulation pump 11, a Glycol solution buffer and expansion tank 12;

[0043] The exhaust gas pipeline containing dinitrogen tetroxide vapor enters the condensation heat exchanger 6, and the gas-liquid mixture outlet pipeline of the condensation heat exchanger 6 is connected to the gas-liquid separator 7, and the bottom of the gas-liquid separator 7 is The liquid pipeline is connected with the liquid phase space of the condensate collection tank 9 (the position where the liquid pipeline extends into the bottom of the tank is about 10 cm), and the middle part is connected with the gas phase space of the condensate collection tank 9 through the gas communication pipe 14. The top of the gas-liquid separator...

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PUM

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Abstract

The invention provides a system and a process for condensing and recovering a nitrogen tetroxide waste gas resource, which belong to the field of waste gas treatment. The system comprises a condensingheat exchanger, a gas-liquid separator, an electric control valve, a condensate collecting tank, a low-temperature water chilling unit, and an ethylene glycol water solution buffer and expansion tank. A pipeline of waste gas containing nitrogen tetroxide steam enters the condensing heat exchanger; a gas-liquid mixture outlet pipeline of the condensing heat exchanger is connected with the gas-liquid separator; the gas-liquid separator is connected with the condensate collecting tank through a gas communicating pipe. In the system, the low-temperature water chilling unit provides a cooling capacity for cooling the temperature of an ethylene glycol water solution to the operating temperature, the ethylene glycol water solution cools the waste gas containing the nitrogen tetroxide steam through heat exchange so as to achieve a supersaturated state, and nitrogen tetroxide is recovered through gas-liquid separation. In the process, the ethylene glycol water solution is not only an intermediate heat transfer working medium but also a cold storage working medium, so that the system is ensured to operate stably.

Description

technical field [0001] The invention belongs to the field of exhaust gas treatment, and in particular relates to a process flow and key technology for rocket liquid propellant exhaust gas treatment. Background technique [0002] Dinitrogen tetroxide is one of the most widely used rocket propellants, and is widely used in the fields of space launch and weapon equipment scientific research and testing. A large amount of exhaust gas will be generated during the work process of transfer, filling, warehouse return, temperature adjustment, and various equipment adjustments. According to GB5044-85 "Classification of Hazard Degree of Occupational Exposure to Toxic Substances", it is a highly toxic substance. For a long time, waste gas has been treated by high-altitude emission, combustion, or solution absorption, which not only increases the cost, causes secondary pollution, but also causes a large waste of resources. [0003] When the mixed gas is cooled to a certain temperature,...

Claims

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Application Information

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IPC IPC(8): B01D5/00B01D49/00C01B21/20
CPCB01D5/0003B01D49/00B01D53/002C01B21/20
Inventor 张立清李珍候瑞琴方艺杰赵光瑞焦天恕黄凌志丛继信侯子文何聪武纬金梦超
Owner 中国人民解放军63605部队
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