TWO:There are several letters still remaining which Lieutenant Katte wrote to his friends during those hours of anguish in which he was awaiting his death. No one can read them without compassionate emotion, and without execrating the memory of that implacable tyrant who so unjustly demanded his execution. The young man wrote to the king a petition containing the following pathetic plea:Frederick regarded the Academy as his pet institution, and was very jealous of the illustrious philosopher, whom he had invited to Berlin to preside over its deliberations. Voltaire, knowing this very well, and fully aware that to strike the Academy391 in the person of its president was to strike Frederick, wrote an anonymous communication to a review published in Paris, in which he accused M. Maupertuisfirst, of plagiarism, in appropriating to himself a discovery made by another; secondly, of a ridiculous blunder in assuming that said discovery was a philosophical principle, and not an absurdity; and thirdly, that he had abused his position as president of the Academy in suppressing free discussion, by expelling from the institution a member merely for not agreeing with him in opinion. These statements were probably true, and on that account the more damaging.
THREE:The next day there was a great promenade. We were all in phaetons, dressed out in our best. All the nobility followed in carriages, of which there were eighty-five. The king, in a Berline, led the procession. He had beforehand ordered the round we were to take, and very soon fell asleep. There came on a tremendous storm of wind and rain, in spite of which we continued our procession at a foots pace. It may easily be imagined what state we were in. We were as wet as if we had been in the river. Our hair hung about our ears, and our gowns and head-dresses were destroyed. We got out at last, after three hours rain, at Monbijou, where there was to be a great illumination and ball. I never saw any thing so comical as all these ladies, looking like so many Xantippes, with their dresses sticking to their persons. We could not even dry ourselves, and were obliged to remain all the evening in our wet clothes.
THREE:Besides the garrison of fifty thousand there were eighty thousand inhabitants in the city, men, women, and children. Large numbers perished. Some died of starvation; some were burned to death in their blazing dwellings; some were torn to pieces by shot and shell; some were buried beneath the ruins of their houses. In the stillness of the night the wails and groans of the sufferers were borne on the breeze to the ears of the Prussians in their intrenched camp. Starvation brought pestilence, which caused the death of thousands. The inhabitants, reduced to this state of awful misery, entreated the Austrian general to surrender. He refused, but forced out of the gates twelve thousand skeleton, starving people, who consumed the provisions, but could not contribute to the defense. Frederick drove the poor creatures back again at the point of the bayonet, threatening to shoot them all. The cruel act was deemed a necessity of war.
A hydrocyclone (liquid cyclone) injects treatment solution into stationary equipment to perform separation, classification, and concentration, and is an innovative separator with a very simple structure and no drive unit.
Structure of a hydrocyclone (liquid cyclone)
A suspension containing fine particles of several micrometers or more is supplied to a cylindrical container circumferentially at high speed. And as a result it starts to rotate and a centrifugal force is generated. At this time a gravitational acceleration of several tens of thousands of G is generated in the circumferential direction, and thus leading to fast sedimentation and concentration of the fine particles. The separated concentration can be freely selected by changing the supply rate (supply pressure and flow rate) and the flow ratio of the outlet. Our hydrocyclone (liquid cyclone) was designed and manufactured to classify and concentrate fine particles, and so has a small element.
- Equipment costs can be reduced.
- Operating costs can be reduced.
- Maintenance costs can be reduced.
- Any change in raw material and product can be easily addressed.
- Large amounts can be treated in a small area.
- Separation and cleaning are easy because of the simple structure.
- Simplified control
- This equipment can be operated in synchronization with external devices.
- Alarm and interlock mechanism.
- Classification and concentration for the manufacture of inorganic powder materials
- Classification of ceramic materials
- Removal of fine particles, including iron powder
- Removal of fine particles from pigments
- Removal of fine organic particles from solvents
- Separation of starch and yeast
- Removal of fine particles from high-temperature strong acid solutions
- Removal of fine particles from low-temperature solutions
- Product guide
- Alcohol distillation
- Distillation equipment
- High-purity distillation system
- Membrane separation type solvent dehydration system
- Reactor
- Evaporative concentration equipment
- Coulter spray dryer
- Microwave treatment system
- Filter dryer
- OS filter (continuous vacuum rotating filter)
- Hydrocyclone (liquid cyclone)
- Thermal oil heater (heat medium boiler)
- Process air heater (air heater)
- Ammonia treatment system
- Catalytic deodorizing equipment for ammonia and VOC gas
- Stationary cryogenic storage tank
- Portable cryogenic container
- Cryogenic liquefied gas evaporator