Three-phase separator for internal circulation anaerobic reactor

Abstract

The invention discloses a three-phase separator for an internal circulation anaerobic reactor. The three-phase separator comprises at least one gas collecting hood layer and gas collecting pipes arranged below the gas collecting hoods, each gas collecting hood layer comprises at least one gas collecting hood of an inverted-V-shaped structure, and two ends of each gas collecting hood along the length direction are arranged on the sidewall of the reactor perpendicularly. Each gas collecting pipe is positioned in the corresponding inverted-V-shaped structure and is parallel to two oblique planes of the corresponding inverted-V-shaped structure. Two ends of each gas collecting pipe are closed, wherein one end of the gas collecting pipe is positioned in the reactor while the other end thereof passes through the sidewall of the reactor perpendicularly to extend out of the reactor. A row of gas collecting holes is formed in the lower side of each gas collecting pipe along the length direction of the gas collecting pipe. The three-phase separator for the internal circulation anaerobic reactor has the advantages that one row of gas collecting holes is formed in the lower side of each gas collecting pipe along the length direction of the gas collecting pipe, and rising methane is collected via the gas collecting holes, so that liquid carried by the rising methane is more uniform, and carried fine particles are fewer.

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

In this way, the liquid phase flow entrained by the gas at the farthest distance from the confluence tank 2 is the smallest, and the closer to the confluence tank 2, the greater the liquid phase flow rate entrained by the gas, causing the liquid phase in the reactor to be brought into the gas very unevenly. liquid separator, so the removal rate of the reactor is reduced; and the closer to the confluence tank 2, due to the greater gas flow rate, the tail suction of the gas and the formed micro-vortex have a slight effect on the adsorption of the sludge with poor settling property and the interface of rising bubbles 8 The stronger the adsorption and capture effect of granular sludge, the formation of a gas-liquid-solid three-phase interface layer 7, the interface layer has a much more severe gas-liquid turbulent distribution than inside the reactor, resulting in more fragmented and fragmented sludge. The sludge is brought into the gas-liquid separator with the gas, and the broken sludge enters the first reaction chamber with the return pipe, which easily makes the reactor effluent turbid

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