Steam injection boiler with four return loop pipeline

Abstract

A steam injection boiler with a four-pass circulation pipeline, the water vapor system is composed of a distributor, a mixer, a steam collector, a steam discharge pipe, a water supply pipe and a four-pass water feed heat exchanger, and the shell of the four-pass feed water heat exchanger The side inlets are respectively connected with the four water outlets of the distributor, the shell side outlets of the four-pass feed water heat exchanger are respectively connected with the inlets of the four groups of convection tube bundles, and the outlets of the four groups of convection tube bundles are connected with the tube side of the four-return feed water heat exchanger respectively. The inlets are connected, the outlets of the tube side of the four-pass water feed heat exchanger are respectively connected with the four water inlets of the mixer, the four outlets of the mixer are respectively connected with the inlets of the four groups of radiant tube bundles, and the outlets of the four groups of radiant tube bundles are respectively connected with the collectors. The four inlets of the steamer are connected, and the outlet of the steam collector is connected with the steam discharge pipe. The layout of the four sets of circulation pipelines is balanced, simple and compact, and the thermal efficiency is high. It can output 100 tons of high-temperature steam with a pressure of 14MPa per hour, which solves the steam auxiliary problem. Problems with large quantities of steam required for gravity drainage.

Description

technical field [0001] The invention relates to special equipment for thermally exploiting deep well heavy oil in the petroleum industry, in particular to a steam injection boiler. Background technique [0002] The steam injection boiler is the core equipment for heavy oil exploitation in the oil field. It injects the high-pressure steam into the oil well to heat the crude oil in the oil layer to reduce the viscosity of the heavy oil and increase the fluidity of the heavy oil, thereby improving the recovery of deep well heavy oil. Rate. The main problems existing in the existing steam injection boilers are: the shape and structure of each section of the boiler body are not optimally configured, the water vapor circulation pipeline is a single return, the layout of the tube bundle is redundant and not compact, the shell of the radiant section is cylindrical, and the tube The road is complicated, the volume is large, the heat loss along the way is large, the thermal efficienc...

AI Technical Summary

Problems solved by technology

The main problems existing in the existing steam injection boilers are: the shape and structure of each section of the boiler body are not optimally configured, the water vapor circulation pipeline is a single return, the layout of the tube bundle is redundant and not compact, the shell of the radiant section is cylindrical, and the tube The road is complicated, the volume is large, the heat loss along the way is large, the thermal efficiency is low, and the rated evaporation is small, which can only reach 22.5 tons / hour, but cannot reach 100 tons / hour

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