Vehicle mounted type steam-filling boiler with evaporation capacity as 18 ton / hour

Abstract

A vehicular steam injection boiler has the evaporation capacity of 18 t / h; both a radiant section boiler and a convection section boiler are installed on a tow truck, wherein, the radiant section boiler is internally provided with a radiant section tube bank which is composed of a plurality of furnace tubes that are arranged along the annular direction of the inner wall of the radiant section boiler; the two adjacent furnace tubes are sequentially connected with each other head to tail by an elbow to form a snakelike tortuous single back stroke tube bank; the convection section boiler is internally provided with a convection section tube bank which is a single back stroke tube bank formed by connecting six lines of light tubes and a plurality of lines of finned tubes in a reciprocating way by using the elbow; a feed water preheater is installed outside the radiant section boiler, and the feed water preheater, the convection section tube bank and the radiant section tube bank are connected with each other by a pipeline; a furnace brick lining on the inner wall of the radiant section boiler is formed by compounding six layers of heat preservation materials; a transition section of the steam injection boiler is removed, the volume of the boiler is reduced, the heat loss is decreased, and machine weight is lightened, so that the vehicular steam injection boiler can bear the mechanical vibration in the transportation process, thus obviously increasing the rated evaporation which can reach 18 t / h.

Description

technical field [0001] The invention relates to thermal exploitation equipment in the petroleum industry, in particular to a steam injection boiler. Background technique [0002] Steam injection boilers are also called steam generators, which can be divided into two types: fixed and vehicle-mounted. Vehicle-mounted steam injection boilers are easy to use, can reduce the workload of oilfield ground construction, and reduce heat loss in pipeline transportation. With the continuous deepening of heavy oil exploitation in my country, oilfields have more and more diversified demands on steam injection boilers. According to different exploitation needs, various requirements are put forward in terms of rated evaporation and pressure level. [0003] At present, the maximum rated evaporation of the vehicle-mounted steam injection boiler is 11.2t / h, which is far lower than the rated evaporation of the fixed steam injection boiler. The reasons are: [0004] 1. The existing vehicle-moun...

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Problems solved by technology

[0004] 1. The existing vehicle-mounted steam injection boiler still adopts the structure of a fixed steam injection boiler. The furnace body is composed of three major sections: radiation section, convection section, and transition section. It is heavy and thick, and is limited by the weight of the trailer. For many reasons, the furnace body cannot be made very large, which limits its further increase in rated evaporation

[0005] 2. The existing vehicle-mounted steam injection boilers still use heavy refractory materials as the furnace lining. The heavy refractory materials are heavy and thick. Due to the weight limit of the trailer, the furnace lining cannot be made very large, and the insulation effect is poor. When subjected to vibration during transportation, the heavy refractory material is easy to fall off. These factors limit the further increase of the rated evaporation of the vehicle-mounted steam injection boiler.

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