Natural circulation phase change heating storage tank

Abstract

The invention relates to a natural circulation phase-change heating oil storage tank. The technical scheme is as follows: the natural circulation phase-change heating oil storage tank consists of a phase-change heating furnace, an oil storage tank and a pipeline system, wherein the phase-change heating furnace is connected with the oil storage tank by the pipeline system; the oil storage tank comprises two forms such as a normal pressure tank or a bearing and separating tank; the pipeline system consists of a crude oil pipeline, a gas pipeline and water-vapor circulation pipelines, and the crude oil pipeline and the gas pipeline are laid under a foundation line; the water-vapor circulation pipelines are erected from the air, and are divided into an upper layer and a lower layer, wherein the upper layer is high-temperature water-vapor tank inlet pipelines and the lower layer is a condensed water return pipeline. When in working, phase change is utilized for heat transferring so as to realize backflow naturally without needing a forced circulation system such as a hot water pump and the like, and the heat efficiency reaches or exceeds that of the 'heart-burn' structure; the matched heating furnace combines the advantages of a water jacket furnace and a pipe type furnace, and is equipped with a single-well coiled pipe; especially, a hearth adopts a water-cooling wall structure, and a fire grate adopts water-cooling pipes without using refractory bricks, so that the volume is smaller, the weight is light, the heat loss is less, and the heat efficiency is high. The heating furnace can achieve the purpose of burning three types of fuels such as coal, gas and oil simultaneously.

Description

1. Technical field: [0001] The invention relates to an oilfield heating device, in particular to a natural circulation phase change heating oil storage tank suitable for crude oil heating, storage and shipment of oilfield single-well pulling tanks and multi-functional tanks. 2. Background technology: [0002] At present, the single-well oil tanks used in my country's oilfield development mainly include atmospheric pressure elevated tanks and pressure-bearing multifunctional tanks. It does not comply with the safety regulations of GB50183-2004 "Code for Fire Protection of Oil and Gas Engineering Design", and in practical applications, large tank explosion accidents do occur from time to time, which poses great hidden dangers; and pressure-bearing multi-functional tanks cannot burn coal, if the gas source is not enough It will affect the production, and there is also a split structure, that is, the heating furnace is separated from the oil storage tank, and the heat generated by...

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Problems solved by technology

[0002] At present, the single-well oil tanks used in my country's oilfield development mainly include atmospheric pressure elevated tanks and pressure-bearing multifunctional tanks. It does not comply with the safety regulations of GB50183-2004 "Code for Fire Protection of Petroleum and Natural Gas Engineering Design", and in practical applications, there are indeed explosion accidents of large tanks from time to time, which poses great hidden dangers; and the pressure-bearing multifunctional tank cannot burn coal, if the gas source is not enough It will affect the production, and there is also a split structure, that is, the heating furnace is separated from the oil storage tank, and the heat generated by the heating furnace is absorbed by the heat medium, and is forced to be transported to the heat exchanger in the oil storage tank by the circulating pump for heat exchange. However, the heating furnace used is generally an atmospheric furnace, with large loss of medium, frequent addition, small temperature difference (water temperature is less than 100 degrees Celsius), easy scaling, low thermal efficiency, and it is difficult to meet the actual production needs; and the long-term continuous use of the circulating pump, the failure rate high energy consumption

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