Power type heat pipe waste heat boiler device

Abstract

The invention belongs to the technical field of energy efficient utilization, energy saving and environmental protection engineering, and relates to a power type heat pipe waste heat boiler device. A heat pipe evaporator is arranged at each heat pipe circulation upper end, and a gas-liquid collecting pipe and a liquid homogenization pipe are arranged on the two sides of each heat pipe evaporator respectively; a gas-liquid flow splitting pipe is arranged on each heat pipe circulation condenser; the gas-liquid collecting pipes are communicated with the gas-liquid flow splitting pipes, the lower ends of the heat pipe circulation condensers are connected with multi-functional liquid storage tanks, and a liquid separating device and the multi-functional liquid storage tanks are communicated with a solution pump; the upper ends of the heat pipe circulation condensers for an economizer are provided with condenser high-point vent valves, one end of a steam pocket is communicated with a water outlet pipe, and the other end of the steam pocket is connected with a steam pocket water level indication sensor; a steam pocket water level line is arranged in the steam pocket, the upper end of the steam pocket is provided with a steam pocket pressure indication sensor and a saturated steam pipe, and a central control unit is connected with a temperature sensor. The power type heat pipe waste heat boiler device is simple in structure, reliable in principle, convenient to operate, safe in use, long in service life, high in recovery efficiency, low in maintaining cost and environmentally friendly.

Description

Technical field: [0001] The invention belongs to the technical field of high-efficiency utilization of energy and energy-saving and environmental protection engineering, and relates to a power type heat pipe waste heat boiler device, which applies the power type heat pipe to the high-efficiency recovery and utilization of industrial waste heat. Background technique: [0002] The efficient utilization of energy and energy saving and environmental protection have become the key issues that determine whether human society can be sustainable and rapid development in the long term, and are increasingly being paid attention to by people. How to make good use of waste heat in various industrial production processes is crucial to the efficient utilization of energy and energy conservation. Environmental issues are of great importance. Generally speaking, the unit energy consumption of many products in my country is far behind that of developed countries. For example, the unit energy...

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Problems solved by technology

[0003] At present, the boilers used for waste heat recovery mainly include fire tube waste heat boilers, water tube waste heat boilers and heat pipe waste heat boilers. Among them, the fire tube waste heat boilers are the flue gas flowing through the fire tube or smoke tube, and the water outside the fire tube or smoke tube, The steam or steam-water mixture is heated; the water pipe waste heat boiler is the water in the pipe, and the water in the pipe is heated through the external flue gas convection / radiation heat exchange; the heat pipe waste heat boiler is to use the evaporation section of the heat pipe to absorb the waste heat of the flue gas or exhaust gas, and pass The condensing section transfers heat to the water, steam or steam-water mixture outside the heat pipe. The fire tube waste heat boiler has the advantages of simple structure, low water quality requirements, and easy operation, but it suffers from large metal consumption and poor heat transfer effect due to longitudinal erosion of flue gas. , high exhaust gas temperature; large water capacity, slow start-up; easy to accumulate dust inside the smoke pipe, difficult to clean the outside of the smoke pipe; in addition, it cannot adapt to large capacity and high parameter working conditions The problem of waste heat recovery engineering; the heating surface of the water tube waste heat boiler is conveniently arranged, the heat transfer performance is good, and it can be used in the working conditions of large capacity and high parameters in structure; but the high temperature flue gas between the water system and the main boiler (or production process) Direct contact, once leakage occurs, not only the water tube waste heat boiler needs to be shut down immediately for maintenance, but the main boiler (or production process) that provides waste heat may also need emergency treatment, or even stop production; It is also impossible to accurately control the flue gas outlet temperature, so it is difficult to avoid low-temperature acid corrosion damage; and when the boiler is in initial operation, the boiler is fed with cold water, and it takes a period of time to preheat. Close to normal temperature water, so that the surface of the equipment is prone to condensation, sticky dust and other adverse phenomena; the heat pipe waste heat boiler completely isolates the heat source and the cold source, and will not produce mixing of hot and cold fluids, but most of the existing heat pipes use Composed of many gravity-type heat pipes, the waterway and the flue must be closely connected together, which makes the engineering layout difficult; dozens, hundreds or even thousands of heat pipes are closely arranged, which is not easy to repair, and it is difficult to find which heat pipe has failed. The working conditions of dozens, hundreds or even thousands of heat pipes are different, the overall heat transfer rate cannot be controlled, and the exhaust gas temperature cannot be effectively controlled. It is also difficult to avoid corrosion of pipes or heat exchangers due to acid dew point In addition, in practical application, there will be non-condensable gas generated after the heat pipe runs for a long time, resulting in air lock, so that the working medium in the heat pipe cannot be naturally circulated and fails, and sometimes even the outer wall is dry-burned, and the pipe bursts, etc.

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