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    • 5. 发明授权
    • Method of regulating the amount of reducing agent added during catalytic
reduction of NO.sub.x contained in flue gases
    • 调节烟气中所含NOx催化还原过程中还原剂添加量的方法
    • US4681746A
    • 1987-07-21
    • US784721
    • 1985-10-04
    • Stanislaw MichalakKlaus-Dieter WeberJurgen Meier
    • Stanislaw MichalakKlaus-Dieter WeberJurgen Meier
    • B01D53/56B01D53/74B01D53/86B01J8/06C01B21/00C01B31/00
    • B01D53/8696B01D53/8625
    • A method of regulating the amount of reducing agent added, especially NH.sub.3 in the case of the catalytic reduction of NO.sub.x of flue gases which originate from a combustion installation which is fired with fossil fuels. The adjustment value for the quantity to be added is determined in response to a prescribed reducing agent/NO.sub.x stoichiometry factor from the quantity of combustion air supplied to the combustion installation or from the exiting quantity of flue gas, and from the NO.sub.x concentration downstream ahead of the catalyzer. Regulation is effected by influencing the stoichiometry factor. The NO.sub.x concentration downstream after the catalyzer is returned to the regulation process as the primary correction value, and the reducing agent concentration downstream after the catalyzer, and the flue gas temperature ahead of the catalyzer, are returned to the regulation process as the secondary correction values. The set stoichiometry factor is influenced such that while maintaining the emission light value as the desired value of the primary correction value, and while maintaining a reducing agent concentration downstream after the catalyzer below a prescribed fixed value in a range of from 50 ppm to 3 ppm volume, preferably less than 10 ppm volume, the stoichiometry factor is regulated via the temperature-dependent activity curve of the catalyzer.
    • 在由化石燃料燃烧的燃烧装置产生的烟道气的NOx的催化还原的情况下,调节添加的还原剂的量,特别是NH 3的方法。 根据规定的还原剂/ NOx化学计量因子,从供给到燃烧装置的燃烧空气量或排出的烟道气量,以及从NOx排放量的下游排出的NOx浓度来确定要添加量的调整值 催化剂。 调节是通过影响化学计量因子来实现的。 催化剂下游的NOx浓度作为主要校正值返回到调节过程,并且在催化剂之后的下游的还原剂浓度和催化剂之前的烟道气温度作为二次校正值返回到调节过程 。 影响设定的化学计量因子,使得在将发光值保持为主要校正值的期望值的同时,并且在将催化剂下游的还原剂浓度保持在低于规定的固定值的范围内,范围为50ppm至3ppm的同时 体积,优选小于10ppm体积,化学计量因子通过催化剂的温度依赖性活性曲线调节。
    • 8. 发明授权
    • Method of regulating the amount of reducing agent added during catalytic
reduction of NO.sub.x contained in flue gases
    • 调节烟气中所含NOx催化还原过程中还原剂添加量的方法
    • US4565679A
    • 1986-01-21
    • US661892
    • 1984-10-17
    • Stanislaw MichalakKlaus-Dieter WeberJurgen Meier
    • Stanislaw MichalakKlaus-Dieter WeberJurgen Meier
    • B01D53/56B01D53/74B01D53/86B01J8/00C01B21/00C01G31/00
    • B01D53/8696B01D53/8625
    • A method of regulating the amount of reducing agent added, especially NH.sub.3 in the case of the catalytic reduction of NO.sub.x of flue gases which originate from a combustion installation which is fired with fossil fuels. The adjustment value for the quantity to be added is determined in response to a prescribed reducing agent/NO.sub.x stoichiometry factor from the quantity of combustion air supplied to the combustion installation or from the exiting quantity of flue gas, and from the NO.sub.x concentration downstream ahead of the catalyzer. Regulation is effected by influencing the stoichiometry factor. The NO.sub.x concentration downstream after the catalyzer is returned to the regulation process as the primary correction value, and the reducing agent concentration downstream after the catalyzer, and the flue gas temperature ahead of the catalyzer, are returned to the regulation process as the secondary correction values. The set stoichiometry factor is influenced such that while maintaining the emission limit value as the desired value of the primary correction value, and while maintaining a reducing agent concentration downstream after the catalyzer below a prescribed fixed value in a range of from 50 to 3 ppm volume, preferably less than 10 ppm volume, the stoichiometry factor is regulated via the temperature-dependent activity curve of the catalyzer.
    • 在由化石燃料燃烧的燃烧装置产生的烟道气的NOx的催化还原的情况下,调节添加的还原剂的量,特别是NH 3的方法。 根据规定的还原剂/ NOx化学计量因子,从供给到燃烧装置的燃烧空气量或排出的烟道气量,以及从NOx排放量的下游排出的NOx浓度来确定要添加量的调整值 催化剂。 调节是通过影响化学计量因子来实现的。 催化剂下游的NOx浓度作为主要校正值返回到调节过程,并且在催化剂之后的下游的还原剂浓度和催化剂之前的烟道气温度作为二次校正值返回到调节过程 。 影响设定的化学计量因子,使得在将发射极限值保持为主要校正值的期望值的同时,并且在将催化剂下游的还原剂浓度保持在低于规定的固定值的范围内,范围为50至3ppm体积 ,优选小于10ppm体积,化学计量因子通过催化剂的温度依赖性活性曲线调节。
    • 10. 发明授权
    • Voltage regulator circuit
    • 稳压电路
    • US6094040A
    • 2000-07-25
    • US262434
    • 1999-03-04
    • Jurgen MeierHans-Jorg FlorenzArmin Wernet
    • Jurgen MeierHans-Jorg FlorenzArmin Wernet
    • G05F1/575G05F1/56
    • G05F1/575
    • A voltage regulator circuit for generating a regulated output DC voltage from a non-regulated DC or AC voltage, comprises an input rectifier circuit for rectifying the non-regulated AC voltage and a series regulator, containing a gate-controllable transistor, which regulates the output voltage supplied to it by the rectifier to a first voltage value. The transistor of the series regulator is a field-effect transistor (20) which in the ON condition charges a charging capacitor (46), the charging voltage of which forms the regulated output voltage. Connected to the gate terminal (21) of the field-effect transistor is a first threshold circuit (26, 28, 30, 32) receiving the non-regulated DC voltage which applies to this gate terminal (21) a voltage turning OFF the field-effect transistor (20) as soon as the non-regulated DC voltage exceeds a predetermined threshold value. Furthermore, connected to the gate terminal (21) of the field-effect transistor (20) is a second threshold circuit (36, 38, 40, 42) receiving the regulated output DC voltage which applies to this gate terminal (21) a voltage turning OFF the field-effect transistor (20) as soon as the regulated output DC voltage exceeds a predetermined design value.
    • 用于从非调节的DC或AC电压产生稳压的输出DC电压的电压调节器电路包括用于整流非调节的AC电压的输入整流电路和包含栅极可控晶体管的串联调节器,其调节输出 由整流器将其提供给第一电压值。 串联调节器的晶体管是场效应晶体管(20),其在接通状态下对充电电容器(46)充电,其充电电压形成调节的输出电压。 连接到场效应晶体管的栅极端子(21)是接收施加到该栅极端子(21)的非调节DC电压的第一阈值电路(26,28,30,32),电压关闭场 一旦非调节的直流电压超过预定的阈值,就会影响晶体管(20)。 此外,与场效应晶体管(20)的栅极端子(21)连接的是第二阈值电路(36,38,40,42),其接收施加到该栅极端子(21)的稳定的输出DC电压, 一旦调节的输出直流电压超过预定的设计值,就关闭场效应晶体管(20)。