Method for accurately installing formaldehyde synthesis tower internals

Abstract

The invention discloses a method for accurately installing formaldehyde synthesis tower internals. The method comprises the following steps: 1, pre-installing the internals: arranging auxiliary mounting devices between tower trays, wherein the auxiliary mounting devices comprise an upper fixing and adjusting device, a connecting supporting leg adjusting device, a longitudinal sliding adjusting device and a radial sliding adjusting device which are connected in sequence, the internals are clamped and fixed on the radial sliding adjusting device through fastening pieces of the radial sliding adjusting device, the radial sliding adjusting device adjusts the radial sizes of the synthesis tower internals according to the internal size of the formaldehyde synthesis tower, the connecting supporting leg adjusting device adjusts the distance between the internals and the coaxiality of the internals through an adjusting rod, and the internals are fixed through fastening bolts after the auxiliarydevices position the positions of the internals; welding pipelines in the tower; filling with a catalyst; and integrally closing the tower, and performing pressure test. The method for accurately installing formaldehyde synthesis tower internals is simple and low in cost.

Description

technical field [0001] The invention relates to the technical field of formaldehyde preparation equipment installation. More specifically, the invention relates to a method for accurately installing the internals of a formaldehyde synthesis tower. Background technique [0002] Methanol is an important basic organic chemical raw material, and is widely used in chemical products such as organic synthesis, dyes, medicine, pesticides, coatings, automobiles and national defense industries. With the reduction of petroleum resources and the reduction of the unit cost of methanol in today's world, it has become a trend to use methanol as a new source of petrochemical raw materials. Especially with the sustained and rapid economic development of China and the Asia-Pacific region, the methanol consumption market is expanding rapidly. At the same time, the domestic promotion of methanol fuel gasoline and the successful development of methanol fuel cells not only opened up a broader m...

AI Technical Summary

Problems solved by technology

However, if the synthesis tower internals including these trays cannot be accurately installed in the synthesis tower, the excellent effects brought by these trays cannot be exerted

[0006] Due to the high pressure, high temperature and large diameter of the methanol synthesis tower, as well as the heavy weight of the tower internals and many bolt holes, it is very difficult to align the connecting bolts, and the manual assembly is difficult

The matching gap between the assembly bolts and the bolt holes is small, which makes it very difficult to align the connecting bolts, easily damage the threads, and easily damage the tower internals during installation

Therefore, the traditional construction method has complicated procedures, large amount of construction materials and mechanical shifts, long construction period and high cost.

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