摘要:
The present invention relates to method for reaction control of an exothermic reaction, comprising the steps: i) carrying out an exothermic reaction in a reactor to produce product, ii) measuring temperature and/or pressure in the reactor, and iii) introducing inert product already produced previously in the exothermic reaction from a storage container into the reactor, if temperature and/or pressure exceed(s) critical value(s). as well as an apparatus for carrying out an exothermic reaction.
摘要:
The invention relates to a process for preparing linear α-olefins, wherein ethylene 1a is conducted into the oligomerization reactor 2 in the liquid phase. The oligomerization reactor 2 has a mechanical stirrer 2a in order to ensure optimal mixing of the liquid ethylene and of the catalyst in the liquid phase. From the top of the oligomerization reactor 2, vaporized ethylene is drawn off together with light α-olefins and a small proportion of the organic solvent. The gas mixture drawn off from the top of the reactor 2 is condensed together with gaseous fresh ethylene 7 by means of heat exchanger 3 and separator 4. The liquid phase drawn off from the separator 4 is conducted by means of circulation pump 5a as liquid ethylene input 1a back into the oligomerization reactor 2. The liquid products of the oligomerization reaction are drawn off 8 laterally from the base of the reactor 2.
摘要:
The invention relates to a process for preparing linear α-olefins, wherein ethylene 1a is conducted into the oligomerization reactor 2 in the liquid phase. The oligomerization reactor 2 has a mechanical stirrer 2a in order to ensure optimal mixing of the liquid ethylene and of the catalyst in the liquid phase. From the top of the oligomerization reactor 2, vaporized ethylene is drawn off together with light α-olefins and a small proportion of the organic solvent. The gas mixture drawn off from the top of the reactor 2 is condensed together with gaseous fresh ethylene 7 by means of heat exchanger 3 and separator 4. The liquid phase drawn off from the separator 4 is conducted by means of circulation pump 5a as liquid ethylene input 1a back into the oligomerization reactor 2. The liquid products of the oligomerization reaction are drawn off 8 laterally from the base of the reactor 2.
摘要:
The present invention relates to a method for preparing a catalyst composition for the oligomerization of ethylene and a respective catalyst composition pre-formation unit.
摘要:
A connector includes two housings, a chamber block, and a seal. Passages arranged in a configuration extend through first housing top wall into first housing. Chamber block has chambers arranged in the configuration. Seal has openings arranged in the configuration and attaches to chamber block such that openings align with chambers. First housing houses chamber block and seal such that first housing top wall and chamber block sandwich seal and passages, openings, and chambers align. Second housing has plugs arranged in the configuration. Housings attach together such that first housing side wall and seal sandwich second housing side wall whereby seal seals housings and such that plugs extend into respective sockets in chambers. Electrical leads extend through the aligned passages, openings, and chambers and contact sockets to electrical connect with plugs. The seal simultaneously seals first housing in a region in which leads enter first housing and seals between housings.
摘要:
It has been found that compounds having 5-HT3 (serotonin M) receptor antagonist activity can be used for (the manufacture of medicaments for) treating inflammations of the respiratory tract including the larynx, the trachea, or especially the bronchi and the lung, especially for treating obstructive pulmonary/bronchial diseases, or laryngospams (Spasmus glottides).
摘要:
The invention concerns an adjustable hinge that connects two furniture/cabinet components (door and cabinet body) together by means of a cabinet hinge and baseplate. On the cabinet hinge is a spring snap mechanism and connected on it, a hinge arm. This is connected by an adjustment plate with the baseplate and between the hinge arm and adjustment plate, an adjustment screw is located to adjust the both (bilateral) distances. The adjustment screw is screwed through an enclosed elongated hole in the adjustment plate in a thread borehole in the hinge arm. According to the invention, the adjustment screw is designed as a set screw (thread pin), which has on its one end a device for a releasable coupling with a tool and on the other end has a plate with a larger diameter. The bottom surface side of the plate, thus, rests on the baseplate and on the plate's upper surface, the edge of the adjustment plate's elongated hole. It is preferred that the plate's surfaces and the baseplate's surfaces are formed spherical or cone-shaped and that the edge of the elongated hole's edge is strengthened or reinforced. The invention-related adjustable hinge allows the easy, simple, precise and reproducible adjustment of these lateral distances between the door and cabinet without damage to the hinge, while simultaneously, enabling a simpler, easier and cost effective production of the hinge itself.
摘要:
A semiconductor memory configuration in a semiconductor substrate includes bit lines, word lines, and memory cells each including one memory capacitor and one MOS selection transistor having two conducting regions and a gate electrode. Each memory capacitor is connected to one of the conducting regions of the transistor. The other of the conducting regions of the transistor is connected to one of the bit lines, and the gate electrode of the transistor is connected to one of the word lines. An insulating field oxide or buried insulating oxide with substantially vertical sidewalls is provided. A trench lies adjacent to the insulating field oxide or buried insulating oxide and adjacent to one of the conducting regions. The capacitors are each disposed in one trench for each memory cell. A first insulating layer covers the inner trench wall surface. A first electrode of the capacitor is disposed perpendicular to the substrate surface on the first insulating layer completely inside the trench. A second insulating layer is disposed on the first electrode. A second electrode is disposed vertically on the second insulating layer in the trench. A contact is connected between the first electrode of the capacitor and one of the conducting regions of the transistor laterally through an opening formed in the first insulating layer on the inner trench wall surface. Methods for producing the semiconductor memory configuration and a memory matrix having at least four of the memory cells, are also provided.
摘要:
In a process for cleaning one or more articles in the vapor phase of an organic solvent the solvent vapor is fed into a cleaning chamber (1) wherein an absolute pressure of 200 mbar or less is maintained and the cleaning is conducted at a temperature at or above the flash point of the organic solvent. A preferred apparatus for conducting the cleaning process contains a cleaning chamber (1), two storage tanks (2 and 3), an evaporator (4), a heating device (5) and a condenser (6). These devices are connected by means of a conduit system which is equipped with a vacuum pump (7), two pumps (8 and 9) and valves (12, 13, 14, 15, 16, 17, 18, 19, 20, 21 and 22). Inlet air (11) can be fed into the cleaning chamber (1). Waste gas (10) can be removed from the apparatus by means of the vacuum pump (7).
摘要:
Thrust-generating device with rocket engines arranged in pairs opposite each other for multiple ignition as well as individual and group activation and with an amount of fuel sufficient for the duration of the mission. The thrust-generating device is designed as a closed, storable, modular unit. The rocket engines are operated with liquid fuel and liquid oxidizing agent. At least one tank is provided for each fuel component. The tanks are in the filled, pressureless state before the activation of the thrust-generating device. The rocket engines and a fuel distributor of block design are integrated within a central bulkhead. The thrust-generating device is surrounded by a sealed outer jacket and is divided by the bulkhead into two separate chambers. The outer jacket is lined on the inside with a "self-sealing" film. The oxidizing agent is stored in one chamber, and the fuel in the other chamber. The empty spaces in the chambers contain an adsorbent filling. A temperature-controlled safety device brings about a pulse-free blow-off of the fuels through at least one pair of engines.