A heat removal tube set, a method for controlling reaction temperature using the heat removal tube set, and a method for producing an unsaturated nitrile are provided. The heat removal tube set has at least one first heat removal tube and at least one second heat removal tube. The number of all straight pipes a of the first heat removal tube is the same as that of all straight pipes b of the second heat removal tube. The ratio of the total circumference Lb of the outer contours of all of the straight pipes b of the second heat removal tube on the cross section to the total circumference La of the outer contours of all of the straight pipes a of the first heat removal tube on the cross section is 1.25-2. When the first heat removal tube and the second heat removal tube are switched coordinatively in a paired manner, a fine adjustment of the reaction temperature can be realized.

A heat removal tube set, a method for increasing reaction load by using the heat removal tube set, and application of the same in the production of unsaturated nitrile are provided. The heat removal tube set has at least 10 heat removal tubes, and in at least one and at most 88% of the total of the heat removal tubes of the heat removal tube set, an angle formed between an extended line of the central axis of at least one connecting fitting and an extended line of the central axis of other connecting fitting is greater than 0? and less than 180?. By arranging such a heat removal tube set, the heat removal capability and fluidization efficiency of the fluidized bed reactor is improved, so that the demand for increasing the reaction load can be fully satisfied.

A heat removal tube set, a method for increasing reaction load by using the heat removal tube set, and application of the same in the production of unsaturated nitrile are provided. The heat removal tube set has at least 10 heat removal tubes, and in at least one and at most 88% of the total of the heat removal tubes of the heat removal tube set, an angle formed between an extended line of the central axis of at least one connecting fitting and an extended line of the central axis of other connecting fitting is greater than 0? and less than 180?. By arranging such a heat removal tube set, the heat removal capability and fluidization efficiency of the fluidized bed reactor is improved, so that the demand for increasing the reaction load can be fully satisfied.

In a process for the synthesis of a nitrile by endothermic catalyzed reaction of ammonia with a hydrocarbon using heating obtained by passing an alternating current through a metallic coil, the endothermic reaction between ammonia and the hydrocarbon takes place in a reactor with direct inductive heating in the reaction zone. The heating is extremely fast, which makes the reaction practically instantaneous.

In a process for the synthesis of a nitrile by endothermic catalyzed reaction of ammonia with a hydrocarbon using heating obtained by passing an alternating current through a metallic coil, the endothermic reaction between ammonia and the hydrocarbon takes place in a reactor with direct inductive heating in the reaction zone. The heating is extremely fast, which makes the reaction practically instantaneous.

Methods of converting a fluorinated vinyl ether to a saturated partially fluorinated ether, the method comprising: reacting the fluorinated vinyl ether with an amine, ammonia, or combination thereof to form the saturated partially fluorinated ether.

Methods of converting a fluorinated vinyl ether to a saturated partially fluorinated ether, the method comprising: reacting the fluorinated vinyl ether with an amine, ammonia, or combination thereof to form the saturated partially fluorinated ether.

Methods of converting a fluorinated vinyl ether to a saturated partially fluorinated ether, the method comprising: reacting the fluorinated vinyl ether with an amine, ammonia, or combination thereof to form the saturated partially fluorinated ether.

The present disclosure relates generally to catalyst materials and processes for making and using them. More particularly, the present disclosure relates to molybdenum, bismuth and iron-containing metal oxide catalyst materials useful, for example, in the partial oxidation or ammoxidation of propylene or isobutylene, processes for making them, and processes for making acrolein, methacrolein, acrylonitrile, and methacrylonitrile using such catalysts.

The present disclosure relates generally to catalyst materials and processes for making and using them. More particularly, the present disclosure relates to molybdenum, bismuth and iron-containing metal oxide catalyst materials useful, for example, in the partial oxidation or ammoxidation of propylene or isobutylene, processes for making them, and processes for making acrolein, methacrolein, acrylonitrile, and methacrylonitrile using such catalysts.