A method and apparatus for drier/guard bed regeneration of mtp plant

A dryer and guard bed technology, which is applied in the field of MTP device dryer/guard bed regeneration, can solve the problems of frequent flares and large consumption of public works, etc.

Active Publication Date: 2017-02-08
BC P INC CHINA NAT PETROLEUM CORP +1
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Problems solved by technology

[0003] The present invention provides a method and equipment for regeneration of drier / guard bed in MTP device, which is used to solve the problem of impurity gas introduced by regeneration of drier / guard bed in existing devices, large consumption of public works, and frequent torching during regeneration

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  • A method and apparatus for drier/guard bed regeneration of mtp plant

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Embodiment Construction

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0030] The technical problem to be solved by the present invention is to provide a drier / guard bed regeneration method with stable operation and little environmental impact. The method involves three parts: regeneration gas heating and distribution system, dryer / protection bed regeneration system, regeneration gas purification and circulation system. This method uses the fuel gas produced by the device itself and the fuel gas introduced from the outside as the...

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Abstract

The invention discloses a method and equipment for regenerating dryers / protection beds of an MTP (Methanol To Propylene) device. According to the method, a fuel gas is used as a regeneration gas source; fuel gas generated by the MTP device and the fuel gas from the boundary are conveyed into a fuel gas pipe net of the MTP device; one path of the fuel gas is introduced from the fuel gas pipe net to a heater; the fuel gas introduced to the heater is heated to the temperature for regenerating the dryers / protection beds and then is used as a hot regeneration gas; the other branch of the fuel gas is introduced from the fuel gas pipe net to be used as cold regeneration gas; the heat regeneration gas and the cold regeneration gas are proportionally mixed according to different regeneration temperature requirements and then are conveyed into the dryers / protection beds; the fuel gas from the dryers / protection beds is cooled and is conveyed into a flash tank; then the fuel gas containing water is divided into two paths at the top of the flash tank; one path of the fuel gas is directly conveyed into a heating furnace to be used as a fuel and the other path of the fuel gas is pressurized by a circulating fuel gas compressor; and then, the fuel gas is cooled and is conveyed into the fuel gas pipe net, so that the internal circulation of the fuel gas is realized.

Description

technical field [0001] The invention relates to the field of chemical industry, in particular to a method and equipment for regeneration of a drier / guard bed of an MTP device. Background technique [0002] In the existing device MTP, the regeneration of the dryer / guard bed usually uses nitrogen as the regeneration gas source. When nitrogen is used as the regeneration gas source, after the drying process is completed, the dryer / guard bed is turned into an online state, and the adsorbed on the desiccant body Nitrogen, as an impurity gas, is easily substituted into the downstream system by inclusions, which will disturb the purity of the product of the device and the downstream separation operation. At present, the regeneration of the dryer / guard bed of the device is a non-circulating operation, and a large amount of fresh nitrogen needs to be reintroduced each time as the regeneration gas source, resulting in a large consumption of public works for the device, and the device i...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B01D53/26B01D53/00
Inventor 郭克伦王勇李玉鑫路聿轩张霄航曹媛维曹新波姜南杨桂春石海涛
Owner BC P INC CHINA NAT PETROLEUM CORP
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