Petrochemical equipment products - gas header, pigtail, etc
HEXIN is a science and technology enterprise in Shandong Province, specializing in the production of petrochemical and metallurgical products for many years, as well as the on-site construction and installation of these products.
Among them, petrochemical products mainly include cracking tubes, conversion tubes, manifolds, pigtails, thermal converters and other supporting parts. Among them, gas collector and pig tail pipe are also products related to hydrogen production unit.
The gas collecting pipe is used to collect the auxiliary equipment of coke oven for raw gas from each carbonization chamber. The gas collecting pipe is a round or grooved pipe formed by welding or riveting steel plates, which is installed on many brackets supported by the furnace column and connected with the rising pipe.
In order to facilitate the outflow of ammonia water and coal tar from the gas header, 6-10% of the gas header flows towards the outlet of ammonia water. The inclination of the. The raw gas of each carbonization chamber enters the gas header through the riser. The temperature of the raw gas escaping from the carbonization chamber is about 800 ℃. In the riser bridge pipe and gas header, the raw gas is cooled by hot ammonia water sprayed and most of the coal tar is condensed. The limit temperature for cooling the raw gas in the gas header is the adiabatic saturation temperature of the raw gas. The pressure of gas collector is the key to keep the bottom of each carbonization chamber under positive pressure during the whole coking process. To adjust the pressure of gas collector. The "day" type pipe between the gas collecting pipe and the suction pipe is equipped with manual and automatic adjusting flaps. Ammonia water, coal tar extraction and tar residue in the gas header are led into the suction pipe through the tar box.
The upper pigtail pipe is an inlet branch pipe. In addition to distributing feed, it is mainly used to absorb the expansion of the conversion pipe, upper gas collecting pipe and oil transfer line. Therefore, it is required that the material should have a good shape. It is mainly made of austenitic stainless steel 304/321 and other materials. The pipe diameters mainly include φ 25、 φ 32, etc.
The lower pigtail is mainly used for the expansion of the lower gas collector of the mobile phone, and the material used is Alloy 800H.