T/CPCIF 0069-2020 Active Group standards

T/CPCIF 0069-2020 In-line reboiler with falling film inside the tube。

Publish Date: 2020-11-10 Implement Date: 2021-02-11 For services related to genuine standard inquiry, procurement, translation, and other related services in China, please Contact Us

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Basic Information

Standard Code: T/CPCIF 0069-2020

Standard Type: Group standards

Standard Status: Active

is_force_gb: no

CCS Name: Mechanical

ICS Name: \nHeat exchanger

Publish Date: 2020-11-10

Implement Date: 2021-02-11

Scope

Scope: This document specifies the structural models, technical requirements, inspection, marking, factory documents, and packaging and transportation of the internal drop-film reboilers (hereinafter referred to as reboilers). This document is applicable to reboilers used in the petrochemical, coal chemical, light industry, food, and pharmaceutical industries; Main technical content: 5.2.1 The design pressure of the reboiler shall not exceed 35 MPa, and the design temperature range is -70℃~600℃. The nominal diameter shall not exceed 4000 mm. 5.2.2 The liquid distribution plate includes a weir, a distribution plate, and a supporting structure. The distribution plate should be equipped with liquid distribution holes, and the diameter and number of holes should be specified. 5.2.3 The number of small holes on the distribution plate should be the same as the number of heat exchange tubes, or twice the number of heat exchange tubes. The diameter of the small holes on the distribution plate can be calculated according to the following formula: (5-1) (5-2) where: S – the total flow area of the small holes on the distribution plate, in square meters (m2); Q – the flow rate on the distribution plate, in cubic meters per second (m3/s); g – the acceleration of gravity, in meters per second squared (m/s2); h – the liquid level height on the distribution plate, in meters (m); d – the diameter of the small holes, in millimeters (mm); n – the total number of small holes on the distribution plate. 5.2.4 Reboilers with a DN ≥ 2500 mm require the design of multi-stage liquid distribution plates. 5.2.5 The form of the flow channel of the film distributor should be selected based on the physical properties of the medium and the flow rate in the heat exchange tubes, and determined through single-tube cold model testing. 5.2.6 The specifications of the heat exchange tubes are generally in accordance with GB/T 151, and the length of the heat exchange tubes is g