摘要:
The present invention pertains to a method and an installation or system for drying fibrous material. The method comprises the step of ventilating very moist air through the fibrous material located in a drying zone. The moisture content of the moist air is less than that inside the drying zone, its pressure is close to atmospheric pressure and its temperature is higher than that of the material to be dried. The method additionally comprises the step of recovering the heat of condensation of the water vapor extracted from the fibrous material to heat the moist air, providing leaks between the outside ambient air and the ventilation circuit upstream and downstream of the drying zone, making possible a mass and heat exchange. It is possible to ensure heat and mass balance without expelling large amounts of moist air into the ambient air.
摘要:
The present invention pertains to a method and an installation or system for drying fibrous material. The method comprises the step of ventilating very moist air through the fibrous material located in a drying zone. The moisture content of the moist air is less than that inside the drying zone, its pressure is close to atmospheric pressure and its temperature is higher than that of the material to be dried. The method additionally comprises the step of recovering the heat of condensation of the water vapor extracted from the fibrous material to heat the moist air, providing leaks between the outside ambient air and the ventilation circuit upstream and downstream of the drying zone, making possible a mass and heat exchange. It is possible to ensure heat and mass balance without expelling large amounts of moist air into the ambient air.
摘要:
A refrigeration system includes a plurality of heat exchangers (E1, E2, E3) in cascade, each of said heat exchangers including: a flow (150) of cold-producing liquefied methane; a high-pressure flow (122) of a two-phase mixture of refrigerant fluids giving up in heat and including refrigerant fluids having a low normal boiling temperature; and a low-pressure flow (100) of a cold-producing two-phase mixture of said refrigerant fluids.
摘要:
The present invention relates to a method and a system for controlling the circulation of water films on the exchange walls of an exchange surface of a cooling tower. It comprises combining a tank and a dispenser lip to ensure that the film has a specific thickness and that it adheres to the exchange wall right from the moment it starts to flow and repeatedly so, on each exchange wall. The exchange walls between air and water are horizontally sloping at a small angle, thereby ensuring that the water flows by force of gravity and, at the same time, limiting the speed increase on the plate to avoid the droplets from being pulled away by the airflow. The water films are recovered in recovery troughs perpendicular to the flow of the water films on the plates. These troughs are tilted horizontally, and enable the recovery of the water films without being crossed by the air flows. The air is blown in by nozzles which are interposed between the water flow plates in such a way that the airflow is in a counter-current flow or, if necessary, in a cross-current flow, relative to the water films thus enabling the evaporation of the water that cools the water flow on the exchange plates without forming liquid aerosols.
摘要:
The invention provides a method and a system for extracting a substance comprised in a gaseous mixture, the extraction being carried out in a cyclic manner in 2N chambers (AA, BB, CC, DD), each provided with a heat-exchanger (A, B, C, D), N being an integer greater than or equal to 3. Each chamber carries out a cycle comprising the following four steps in succession: a frosting step, a defrosting step, a step of recovering the liquid phase and the residual gas phase, and a temperature-reduction step of reducing the temperature of the heat-exchanger. Further, sequencing the passage from one step to another in each of the chambers is such that the number of chambers carrying out the frosting step and also the total number of chambers carrying out the defrosting, recovery, and temperature-reduction steps are both equal to N.
摘要翻译:本发明提供了一种用于提取气态混合物中所含物质的方法和系统,该萃取是在2N室(AA,BB,CC,DD)中循环进行的,每个室具有热交换器(A, B,C,D),N为大于或等于3的整数。每个腔室连续执行包括以下四个步骤的循环:结霜步骤,除霜步骤,回收液相和剩余物 气相和降低热交换器的温度的降温步骤。 此外,在每个室中从一个步骤到另一个步骤的顺序的排序使得执行结霜步骤的室的数量以及进行除霜,回收和降温步骤的室的总数都等于 N.
摘要:
A method and system for extracting and storing carbon dioxide from fumes derived from the combustion of hydrocarbons in an apparatus designed in particular for the production of mechanical energy comprises: exchangers (11, 25) and a dehydrator (56), for extracting water from the fumes in liquid form at a pressure more or less equal to atmospheric pressure; an integrated cascaded refrigerating apparatus (18, 22, 25, 26, 28, 32, 33, 34, 39, 40), for cooling the fumes at a pressure more or less equal to atmospheric pressure and at a temperature such that the carbon dioxide passes directly from the vapor state to the solid state, via an anti-sublimation process; a fixed (49) and/or removable (51) reservoir and suction means, in particular a pneumatic pump (48), for storing the carbon dioxide in liquid form after defrosting.
摘要:
A cooling system of a first psychrometric mixture having a condensation unit capable of condensing fluid contained in this mixture by direct contact with liquid comprising this fluid, the liquid being in the condensation unit at a temperature below that of the first mixture, and an evaporation unit capable of evaporating liquid in a second psychrometric mixture having fluid, the liquid being in the evaporation unit at a temperature greater than that of the second mixture, the condensation and evaporation units being coupled by a circulation circuit of the liquid, and a regulator for regulating the liquid flow.
摘要:
The invention relates to a method of cooling a metal strip traveling through a cooling section in a continuous heat treatment line. In accordance with the invention, the method consists in projecting a refrigerant medium into the cooling section (4) onto the surface of the strip (1) to be cooled, the medium being constituted for the most part by a phase-change substance that passes into the gaseous phase at a temperature that is lower than the temperature of the strip (1) and without oxidizing said strip so that energy is exchanged within an endothermic process by a change in the phase of said phase-change substance.
摘要:
A cooling system of a first psychrometric mixture having a condensation unit capable of condensing fluid contained in this mixture by direct contact with liquid comprising this fluid, the liquid being in the condensation unit at a temperature below that of the first mixture, and an evaporation unit capable of evaporating liquid in a second psychrometric mixture having fluid, the liquid being in the evaporation unit at a temperature greater than that of the second mixture, the condensation and evaporation units being coupled by a circulation circuit of the liquid, and a regulator for regulating the liquid flow.
摘要:
A cryogenic installation unit comprises at least one item of equipment (2, 6A to 6H, 15) to be thermally insulated, a structure (1) for containing the at least one item of equipment, a main insulation (3) contained in the structure and, associated with this main insulation, a secondary insulation (5) of lower thermal conductivity than the main insulation, said secondary insulation (5) consisting of a vacuum insulation panel.