How to save energy effectively when using galvanizing pot?

The zinc pot, the furnace wall and the burner make up the galvanizing pot furnace, which is the heart of galvanized. Due to the reform of combustion structure, direct combustion has been eliminated, and the gas produced by gas transmission furnace is estimated to have only 5-6mj/m3 of calorific value due to the high components of co2 and n2. Moreover, it also contains s. The cost of electric heating is high, and additional heating system is needed for the plating solution. Natural gas is clean energy and ideal fuel for zinc-pot furnace. This paper discusses the energy saving way of natural gas heating zinc pot.

1. Organized production and strictly implemented operation rules

Good scheduling, good organization of production, improve production. Without production, it is impossible to achieve all the targets, let alone save energy.

A. Continuous production: galvanizing must be continuously produced before the temperature of the zinc pot can be maintained. Pure pursuit of quality, equipment is also wrong. To achieve high yield within the maximum capacity of the zinc pot. The amount of zinc-soluble zinc should be less than 40 to 50 times of the production capacity of a batch zinc-zinc pot, this parameter is recognized by many people in the industry.

Avoid it when organizing production; The spacing between large and small parts, the cross-operation, and the avoidance of temperature imbalance are all very detrimental to energy conservation.

B. Reduce the number and weight of locks, hangers, basket, etc. used in each section. These metal tools are also inserted into the zinc solution along with the plating, which also reduces the heat when it invades.

2. Increase the temperature before galvanized parts

According to the formula, the plating pieces from 20 ℃ to 100 ℃, can reduce the heat loss in plating a 20% per ton.

Measures to increase the temperature of plating parts:

A. increasing solution temperature of 65 ℃, less than 70 ℃.

B. Set up a dry kang and a flat one. Uneven temperature, heat release, had better use hot air drying, the plating temperature of 100 ℃, no more than 120 ℃, the drying oven should design team to use alternately.

3. Reduce the heat dissipation on the surface of zinc solution

The heat dissipation of zinc-liquid surface includes convection and radiation heat dissipation, accounting for about 25% of the total energy consumption.

Measures to reduce heat dissipation:

A. Reduce the large air flow on the surface of zinc solution, which will take away a lot of heat.

B. The non-invasive zinc surface on the surface of zinc solution shall not be greased, and the "frequent greasing" operation method shall not be adopted.

C. Cover the galvanizing pot to keep warm during the downtime. The heat dissipation loss can be reduced by 70% if the heat preservation ratio is not covered.