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    • 4. 发明申请
    • PROCESS AND DEVICE FOR COOLING LOOSE MATERIAL USING A GAS CIRCUIT
    • 使用气体电路冷却松散材料的工艺和装置
    • WO1988000229A1
    • 1988-01-14
    • PCT/AT1987000038
    • 1987-06-25
    • WAAGNER-BIRO AKTIENGESELLSCHAFTBECKMANN, GeorgKARAS, PeterYALDEZ, Peter
    • WAAGNER-BIRO AKTIENGESELLSCHAFT
    • C10B39/02
    • C10B39/02F22B1/1892
    • To avoid the occurence of condensation in fine-powder separators and to obtain optimum cooling of the gas circulating in a coke dry cooling plant, the preheating of the steam generator is divided into at least two parts and is performed after dust separation. At least one preheater (3) is mounted downstream of the fan and upstream of the cooling receptacle and at least one second preheater (4) is located upstream of the fan (5) and downstream of the dust separator. The fluid to be preheated can pass through the preheaters, either in series or in parallel, and may constitute the preheater of a steam boiler. A further improvement is that the cooling fluid inlet temperature is adjustable in the first preheater. For this purpose, the cooling fluid temperature is increased slightly in an adjustable heat exchanger (6), arranged upstream of the preheater and is heated by means of a variable quantity of heated cooling fluid which is supplied upstream of the preheater (3). Adjustment is performed so that the temperature of the wall of the cooling fluid entering the preheater is slightly above the dew-point, which is measured continuously by a probe (12) and is transmitted to the regulator which controls the quantity of heating arriving at the heat exchanger (6). Since the preheaters are arranged outside the heat exchanger (1), the velocity of the circulating gas flowing through the preheaters and the coke is independant of the velocity of the cooling fluid. In this way the heating surfaces of the preheaters are small in relation to those of the boiler, so that a significant reduction in costs can be achieved by the repeated use of the preheaters (3 and 4).
    • 为了避免在细粉分离器中发生冷凝并且获得在焦炭干燥冷却设备中循环的气体的最佳冷却,蒸汽发生器的预热分为至少两部分,并且在灰尘分离之后进行。 至少一个预热器(3)安装在风扇的下游和冷却容器的上游,并且至少一个第二预热器(4)位于风扇(5)的上游和灰尘分离器的下游。 待预热的流体可以串联或并联通过预热器,并可构成蒸汽锅炉的预热器。 进一步的改进是冷却流体入口温度在第一预热器中是可调节的。 为此,冷却液温度在可调节的热交换器(6)中略微增加,该热交换器设置在预热器的上游,并且通过供应预热器(3)上游的可变量的加热冷却流体进行加热。 进行调节,使得进入预热器的冷却流体的壁的温度略高于由探头(12)连续测量的露点,并且被传送到调节器,该调节器控制到达 热交换器(6)。 由于预热器布置在热交换器(1)的外部,所以流过预热器和焦炭的循环气体的速度独立于冷却流体的速度。 以这种方式,预热器的加热表面相对于锅炉的加热表面较小,从而可以通过重复使用预热器(3和4)来实现成本的显着降低。