The new MC mixer (strong) in the ozone, less investment is greater benefits

In pulp bleaching process, ozone mixed with the success of the pulp in pulping and papermaking is one of the most the operation of the technical challenges.Ozone O3 molecules with strong activity, therefore, must perfect control mixing conditions, quickly reaching the bleaching effect.Ideally, this through the lowest energy consumption and best chemical reaction efficiency, and won't cause any process problems and lower quality.

Traditionally, the use of two series mixer will bleaching chemicals into pulp suspension, with highly active O3.This is considered to ensure that all O3 quickly and pulp mixing, the only way to react quickly.

Challenging but wisdom

A few years ago, challenge conventional wisdom, d decided to challenge the traditional virtue of ozone mixing method, set out to develop a new type of thick (MC) in the mixer, the mixer is high efficiency, good control, and only a mixer.The project expected significant benefits, including significant saving investment and maintenance cost and energy consumption, and through improve the efficiency of potential chemical stability control response

I can't imagine an execution of a project and put into production will be more complete, more professional than this project.We are cooperating with dimensional virtue and am very pleased with the results obtained."Mike Schultz said.

Sappi Cloquet take the first step

In 2018, d virtue and in Minnesota Sappi Cloquet factory negotiate and reach an agreement, according to the agreement, the factory will be installed first new ozone MC mixer.Mike SchultzDescribe the situation at that time, he is the manager of Cloquet factory at that time, now has been promoted to vice President of Sappi is responsible for the north American production.

"Frankly, our factory of ozone added before use double mixer configuration as well.So we don't need to be replaced.But based on the chemical efficiency of energy saving and potential, coupled with our high trust and dimensional virtue and good technical cooperation relations, we decided to continue the program."Schultz said.

As usual, when you are the first to use new technology in the world, so the project may have some risk."But, we design the production line, when absolutely necessary, we can restore to the original double mixer configurations," Schultz said."So we segment installation, and to provide the worst in the backup plan."

Happily, the situation has not appeared, project going very well.In fact, Schultz said: "I can't imagine an execution of a project and put into production will be more completely, more professional than this project.Our cooperation and achievements of dimensional virtue feel very satisfied."

Remarkable energy-saving advantages

After the two mixer replacement for one, ozone mixing power consumption and cost analysis showed that a year can save a lot of cost.In addition to saving energy, Schultz also saw with a mixer instead of two other advantages.

If only need a mixing device, so your investment costs and the cost of spare parts and other materials will fall under."

"When you consider installation of similar equipment from a perspective of investors, if you only need a mixer, your investment will decrease, form a complete set of spare parts and other costs will decline.D virtue, therefore, the use of single MC mixer rather than double mixer technology is undoubtedly a selling point, not only saves energy, and reduce the cost of the installation and maintenance."

Schultz said, the factory does not necessarily have to improve the efficiency of chemical mixture, but also does not have any mixing efficiency loss.Their tests confirmed that, however, in terms of pulp bleaching, single mixer can work normally, and as before using double the effect of mixer.

"When we segmented installing a single mixer, we keep the second mixer running state, because it is hard to determine whether a single mixer is completed all the required process.But then we removed the second mixer, all quality test no problem.This confirms the new dimension of virtue single mixer has completed all the necessary work, and even run the second mixer, our production didn't get any improvement."Schultz concluded.

Wen: Hugh O 'Brian