NOVELTY - Pipeline type gas filter comprises an upper semicircular tube wall, a lower semicircular tube wall located in corresponding to the upper semicircular tube wall, an air inlet baffle, an air outlet baffle plate, multiple rings and a grate plate. The axial direction of both the edges of the upper semicircular tube wall and the lower semicircular tube wall are provided with an extending plate. The upper and lower semicircular tube wall of the extending plate is connected with a seal gasket bolt. The air inlet baffle plate and the air outlet baffle plate are connected with an air inlet pipeline.    USE - Used as pipeline type gas filter.    ADVANTAGE - The gas filter is convenient to clean (claimed), and achieves manual cleaning and complete cleaning.    DETAILED DESCRIPTION - Pipeline type gas filter comprises an upper semicircular tube wall, a lower semicircular tube wall located in corresponding to the upper semicircular tube wall, an air inlet baffle, an air outlet baffle plate, multiple rings and a grate plate. The axial direction of both the edges of the upper semicircular tube wall and the lower semicircular tube wall are provided with an extending plate. The upper and lower semicircular tube wall of the extending plate is connected with a seal gasket bolt. The air inlet baffle plate and the air outlet baffle plate are connected with a valve of an air inlet pipeline and an air outlet pipeline. The upper and lower semicircular tube walls are sealed with a gas flow cavity. The outer diameter of the circular ring is provided with same diameter of circular tube wall. The pitch of the gas flow direction is welded and fixed on the lower semicircular tube wall. The grate plate is provided with a circular structure. The grate plate is fixedly connected with air inlet side of the circular ring. The grate plate is uniformly distributed with multiple vent holes. The grate plate is provided with vent hole along gas flow direction to reduce diameter and to increase number of vent hole. An INDEPENDENT CLAIM is also included for gas filtering in the pipeline type gas filter, comprising (i) opening valve of the air inlet pipeline and air outlet pipeline and passing desulfurization marsh gas from the desulfurization tower through each vent hole of grate plate; (ii) blocking marsh gas in liquid foam vent hole, retaining in each grate plate and depositing salt and sulfur sludge components on the grate plate; (iii) closing valve of the air inlet pipeline and air outlet pipeline when the solid component deposited to a specific thickness, opening the upper semicircular tube wall, cleaning each grate plate, and assembling to original structure; and (iv) repeating step (i)-(ii) for marsh gas filtration.    DESCRIPTION OF DRAWING(S) - The drawing shows a schematic representation of the pipeline type gas filter.