Connaught Beijing Heng Xin Electrical and mechanical equipment Technology Development Company Limited is a multi-year commitment to install central air-conditioning refrigeration equipment, energy saving, operation, repair, maintenance, custody of central air conditioning units and ancillary terminal equipment cleaning services, industrial equipment cleaning services company.
Central air conditioning condenser scale easily, normal in summer cooling period should be routine water treatment, or in the high hardness of water environment, water circulation system in inorganic salt can be dissolved in water with temperature crystallization, the condenser heat exchanger tube scale formation on heat exchange efficiency is reduced, leading to. At the same time the hard scale is increased, energy consumption, node 1mm thick hard scale will increase 6% ~ 10%; due to the water soil, sediment, humic complexes formed with dirt, bacteria, algae and other microorganisms and their secretions to form the biological slime, stuck in the condenser tube wall is formed on the dirt, caused a serious jam of pipelines; dirt, mud will affect the efficiency of heat exchange, much power consumption, resulting in high pressure operation, resulting in serious pressure shutdown. All these seriously affect the normal operation of heat transfer equipment.
Cleaning the condenser is divided into physical and chemical washing, cleaning with high pressure water jet in general physics the brass dirt out; if scaling is a hard scale, should undertake chemical cleaning, physically unable to scale removing. In order to make the condenser in optimization operation condition, we must carry on the specialized chemical drug treatment, removal of scale, corrosion, slime, bactericidal and corrosion treatment, reduction to the cleaned metal surface.
Condenser cleaning can I used the following cleaning process:
In 1, the cooling water import and condenser valve closed tightly, the thermometer tube, pressure gauge tube or pipe is connected with the tank anticorrosion pump, a small circulation system, circulation cleaning.
2, to join the HRC-Q105 type pickling inhibitor, the agent is a special corrosion inhibitor for copper, which is attached on the inner wall of the condenser of metal, preventing the acid and metal reaction.
3, join HRC-Q101 type solid acid cleaning agent for cleaning, calcium carbonate as the main component of the scale, the cleaning agent is a composite solid organic acid, white crystal, metal non-corrosive, for weak acid; cleaning agent dosage on the fouling of equipment and the volume.
4, adding HRC-Q104 type dirt remover ( optional), if the device scaling is thick, need to add nigou stripping agent, promoting scale after the reaction product is quickly dissolved in the water, speed up the deep scale response
5, join HRC-Q103 neutralization and passivation agent, in the equipment for chemical cleaning, in the residual acid, to prevent the metal surface oxidation and generation of two rust.
6, cleaning process:
A, cleaning temperature: room temperature cleaning is generally adopted, if scaling is thicker at 40 C ~ 50 DEG C in order to improve the speed of cleaning cleaning.
B, will import unit valve closed, the pressure gauge or thermometer tube, pump anti-corrosion, acid liquid box as the cleaning of the circulatory system. Cleansing first adding corrosion inhibitor, corrosion inhibitor uniform cyclic slow after the addition of organic acids, cleaning should be timing detection reaction, cleaning agent is insufficient to pay, in order to ensure there is enough acid and scale response, cleaning in scale response, may join the right amount nigou stripping agent, defoaming agent.
C, after washing, will more than liquid discharge, and add rinse.
D, after cleaning should be neutralization and passivation agent, neutralization of residual acid, to prevent the metal inner wall oxide.
E, cleaning time is 5 ~ 10 hours, according to the actual situation and.