Three-phase separator used for internal circulation anaerobic reactor

Abstract

The invention discloses a three-phase separator used for an internal circulation anaerobic reactor. The three-phase separator comprises a gas collecting hood, a gas collecting cavity and a flow guide pipe; the gas collecting cavity is a closed cylindrical cavity, an upper surface and a lower surface of the gas collecting cavity are convex upwardly, and gas collecting holes are formed in the lower surface in the aligning direction of the gas collecting cavity. The upper surface of the gas collecting cavity is convex upwardly, so that liquid and sludge falling back onto the gas collecting cavity fall back to the bottom of the reactor to a greatest extent and are prevented from staying on the gas collecting cavity; as the gas collecting holes are formed in the lower surface of the gas collecting cavity in the aligning direction of the gas collecting cavity, rising biogas can be collected; the lower surface of the gas collecting cavity is set as a upwardly-convex structure, so that liquid drops liquefied on the lower surface of the gas collecting cavity are converged to the bottom of the gas collecting cavity and further flow back to the bottom of the reactor, and the blockage of the gas collecting hole as the rising biogas is liquefied on the surface of the gas collecting cavity can be prevented. The three-phase separator used for the internal circulation anaerobic reactor, disclosed by the invention, can ensure that liquid entrained in the rising biogas is more uniform, and less fine particles are entrained.

Description

technical field [0001] The invention relates to a three-phase separator, in particular to a three-phase separator used in an internal circulation anaerobic reactor. Background technique [0002] The technical background related to the present invention will be described below, but these descriptions do not necessarily constitute the prior art of the present invention. [0003] The three-phase separator is the soul of anaerobic reactors such as UASB, EGSB, and IC. The design of the three-phase separator directly affects the effect of the anaerobic reactor. The internal circulation anaerobic reactor (IC) is a high-efficiency anaerobic reactor developed on the basis of the upflow anaerobic sludge bed reactor (UASB). Due to the internal circulation and high ascending velocity of IC, the rational design of the three-phase separator is particularly important. [0004] Generally, IC has two reaction zones, the first reaction zone (ie, the lower reaction zone, also called the main...

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Problems solved by technology

However, this structure also has some disadvantages. For example, after the gas rises to the gas collecting pipe 20, it is easy to liquefy on the surface of the gas collecting pipe 20 and block the gas collecting hole 21.

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