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System and method for comprehensive utilization of waste heat from sodium formate synthesis tail gas

A technology for synthesizing tail gas and sodium formate, which is applied in heating devices, generation of other non-combustion heat, preparation/separation of ammonia, etc., can solve problems such as energy waste, and achieve the effects of saving desalinated water, reducing steam consumption, and greatly promoting value

Active Publication Date: 2015-10-21
LIAOCHENG YANSHAN NEW MATERIAL TECH
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Problems solved by technology

[0003] Aiming at the problem of energy waste existing in the existing sodium formate industry, the present invention discloses a comprehensive utilization system and method for waste heat of sodium formate synthesis tail gas. Condensate, saving energy and resources, reducing energy consumption and consumption

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  • System and method for comprehensive utilization of waste heat from sodium formate synthesis tail gas

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Embodiment Construction

[0015] Such as figure 1 As shown, the tail gas from the synthesis section in the production of sodium formate passes through the primary preheater 1 for heat exchange and cooling, and the tail gas after heat exchange and cooling, that is, non-condensable gas and condensed water, passes through the tail gas cooler 2 and then enters the tail gas separator 3 for separation The tail gas after moisture is vented or enters the synthetic ammonia system, and the condensed water recovered during the whole process enters the batching system of the synthesis section.

[0016] The heat exchange area of ​​the primary preheater is 260m 2 The shell side is 316L, the tube side is 0Cr25Ni20; the exhaust gas goes through the shell side, the caustic soda goes through the tube side, and a three-tube heat exchanger is used; the temperature of the tail gas entering the primary preheater is 160~180°C, and the pressure is 0.8~ 1.2Mpa, the nominal diameter of the delivery pipeline is DN100; the exhau...

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Abstract

The invention relates to a system and method for comprehensively utilizing residual heat of tail gas produced by synthesizing sodium formate, belonging to the field of energy conservation and consumption reduction. The system for comprehensively utilizing residual heat of tail gas produced by synthesizing sodium formate comprises a first-stage preheater, a tail gas cooler and a tail gas separator, wherein the first-stage preheater and the tail gas cooler both adopt shell-and-tube heat exchangers, the first-stage preheater, the tail gas cooler and the tail gas separator are sequentially connected by a pipe. According to the system and method, heat and condensate in the tail gas can be recovered, after implementation is conducted, heat in reaction is utilized to preheat the synthesized materials, primary vapor for preheating of the first-stage preheater can be completely stopped, the consumption of vapor for producing sodium formate can be greatly reduced, 300kg of vapor can be saved per tonnage, and 3,000kg / h of condensed water can be recovered to be used for synthesizing compounding, thereby saving desalted water.

Description

technical field [0001] The invention relates to a system and a method for comprehensively utilizing waste heat of sodium formate synthesis tail gas, belonging to the field of energy saving and consumption reduction. Background technique [0002] At present, a lot of tail gas in many industrial productions is not utilized and is directly emptied, which not only causes waste of resources, but also pollutes the environment. For example, in the traditional technology of sodium formate industry, the tail gas of sodium formate synthesis reaches 160°C. If it is vented without any treatment, the amount of steam on site will be large, and the loss of heat and resources will be large. Contents of the invention [0003] Aiming at the problem of energy waste existing in the existing sodium formate industry, the present invention discloses a comprehensive utilization system and method for waste heat of sodium formate synthesis tail gas. Condensate saves energy and resources, reduces e...

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F24J3/00C01C1/04
Inventor 张金成王存申陈清祥
Owner LIAOCHENG YANSHAN NEW MATERIAL TECH
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