Condensation heat exchanger for treating waste gas high in moisture content and intensified heat exchanger method

Abstract

The invention discloses a condensation heat exchanger for treating waste gas high in moisture content and an intensified heat exchanger method. The condensation heat exchanger comprises a condensationheat exchanger body (1). The condensation heat exchanger body (1) is internally provided with multiple heat exchange tubes (13). The heat exchange tubes (13) are made of electrically-conductive metalor non-metal materials. The heat exchanger further comprises a static electricity generating device (2). The static electricity generating device (2) comprises a cathode fixing bracket (21), cathodewires (22), a power source (23) and a connecting wire (24). The cathode wires (22) are arranged in the heat exchange tubes (13). The cathode wires (22) form a cathode, and the heat exchange tubes (13)form an anode. The cathode wires (22) and the heat exchange tubes (13) form a static electric field in the heat exchange tubes (13), so that the waste gas flows in the heat exchange tubes (13), and acooling medium flows outside the heat exchange tubes (13). By means of the condensation heat exchanger, the dedusting / defogging efficiency can be improved in the condensation process; and the condensation heat exchanger has the advantages that the investment is low, the heat exchange efficiency and the dedusting / defogging efficiency are high, and the equipment space is saved.

Description

technical field [0001] The invention relates to the field of condensation heat exchange, in particular to a condensation heat exchanger and an enhanced heat exchange method for treating waste gas with high moisture content. Background technique [0002] In industries such as electric power, iron and steel, coking and building materials, waste gas with high moisture content is often discharged through chimneys. For example, after the flue gas produced by coal-fired boilers is sent into the chimney through wet desulfurization, its moisture content reaches saturation. After these exhaust gases are discharged into the atmosphere, it is easy to form a high-humidity environment in local areas, which provides the conditions to promote the conversion of fine particles in the air into "smog". The pollutants contained in the exhaust gases will also have an impact on environmental pollution. [0003] In order to avoid visible white smoke when the chimney discharges the exhaust gas (cal...

AI Technical Summary

Problems solved by technology

Although this patent uses a collection tank with a special structure, the collected condensed water is used as the water source of the flushing system of the wet electrostatic precipitator to realize the automatic online flushing function, but its cathode system is arranged outside the condensation heat exchanger and requires a separate Anode systems, which greatly increase cost, take up space, and are less efficient at removing pollutants such as fine particles (2.5 microns and below) and aerosols

[0006] Therefore, the prior art has the following deficiencies: 1. The existing condensing heat exchanger has low heat transfer efficiency and high cost; 2. Adding wet electrostatic precipitator not only increases investment, but also takes up more space; 3. Wet electric precipitator The removal efficiency of pollutants such as fine particles (2.5 microns and below) and aerosols is low

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