System and method for coagulation sedimentation processing for coal bed methane drainage water

Abstract

The invention discloses a system and a method for coagulation sedimentation processing for coal bed methane drainage water and belongs to the technical field of ground projects of oil and gas fields. The system comprises a lifting pump, a first pipeline mixer, a first coil pipe reactor, a second pipeline mixer, a second coil pipe reactor, an inclined pipe sedimentation pool, a sand filter pool and a solvent adding device. The system and the method utilize an agent prescription composed of coagulant and flocculant and a gravity separation and filtering device, effectively remove pollutants in suspended matter in the coal bed methane drainage water and the like, simultaneously achieve integration and miniaturization of the processing system of the coal bed methane drainage water, are suitable for dispersibility of coal bed methane production operation and diversity of water quantity and quality of drainage water, improve standard reaching processing rate of the coal bed methane drainage water, reduce environment pollution risk in the coal bed exploitation process and provide favorable conditions for high efficiency production and creation of enterprises.

Description

technical field [0001] The invention relates to the technical field of oil and gas field surface engineering in the petroleum industry, in particular to a coagulation and settlement treatment system and method for coalbed methane drainage water. Background technique [0002] Coalbed methane, or coalbed gas, is a hydrocarbon gas produced during coalification and stored in coal seams and adjacent strata. Its main component is methane (CH 4 ), which is a high-quality energy and chemical raw material. Through the comprehensive development and utilization of coalbed methane, it can not only improve the safety and productivity of coal mines, but also alleviate the energy shortage, effectively reduce the emissions of methane and carbon dioxide, and have a positive impact on the environment. After years of research and exploration practice, the exploration and development of coalbed methane in my country has achieved remarkable results. Coalbed methane has entered the stage of comm...

AI Technical Summary

Problems solved by technology

[0006] In order to solve the existing problems such as high cost of coalbed methane drainage water treatment and unfavorable scale application, the present invention provides a coalbed methane drainage water coagulation and settlement treatment system, which includes a lift pump, a first pipeline mixer, a first disc tube reactor, the second pipeline mixer, the second coil reactor, inclined tube settling tank, sand filter and drug-dissolving device; the outlet of the lift pump is connected with the inlet of the first pipeline mixer, and the The outlet of the first pipeline mixer is connected with the inlet of the first coil reactor, the outlet of the first coil reactor is connected with the inlet of the second pipeline mixer, and the outlet of the second pipeline mixer is connected with the second pipeline mixer. The inlet of the coiled tube reactor is connected, the outlet of the second coiled tube reactor is connected with the inlet of the inclined tube settling tank, the outlet of the inclined tube settling tank is connected with the inlet of the sand filter, and the drug dissolving device respectively connected to the inlets of the first and second pipe mixers; the drug dissolving and dosing device is provided with two dispensing spaces inside, and the bottom of each dispensing space is provided with a liquid discharge port; the liquid discharge ports are respectively connected to the first A pipeline mixer is connected to the inlet of the second pipeline mixer; the two dispensing spaces are respectively filled with a coagulant and a flocculant; the coagulant enters the first pipeline mixer through the drain port; The flocculant enters the second pipeline mixer through the drain port

Images