Liquid air separation plant containers installation

1. on the tower on the section of the sealing plate and pure nitrogen export cap, coarse argon tower condenser coarse argon export cap must be removed on the ground, clear clean aluminum chips with clean white cloth or plastic wrap before lifting in place.
2. During the lifting of aluminium pressure vessels and aluminium pipelines, the installation should take protective measures to prevent damage to the surface, such as rigging jacket rubber tube, rigging between with support to open.
3. The lower tower (has been compounded with the condenser) should be lifted with random lifting lugs. After the lower tower in place, with plumb line in the tower around check the verticality of the cold box, if the plumb line is not vertical, can be lined with thin steel plate under its base, verticality tolerance is not more than 05-1, verticality find accurate, pad iron should be with the lower raw surface car to avoid pad iron move.

3.1 main cold and on the connection of welding as far as possible with two people welding, preheating temperature and interlayer temperature control, welding shall be ventilated, the use of pumping, other containers with stainless steel composite pad plate of single-sided welding, preheating temperature and interlayer temperature is similarly controlled at about 1 ℃,.

3.2 argon arc welding nitrogen cylinder shall be placed nearby, preferably not more than 6 meters gas pipe the shorter the better, if the gas pipe is too long easy to bring in air, nitrogen, welding seam easy to produce bubbles and other phenomena, affecting the quality of welding both

3.3 In the case of air humidity greater than 8 (cloudy and rainy days, foggy weather) aluminum welding is not allowed.

3.4 butt grouping when the wrong side of the amount to be uniform, wrong side control in 5 wall thickness or less

3.5 aluminum tower butt, welding process must monitor the verticality of the tower, verticality can be adjusted according to the different orientation of the welding