Hydrosulfurization (HDS)

Special solutions for special challenges - highly corrosive media we face with experience and a large portfolio for a measuring loops completely from one source.

pH Measurement in the Reprocessing of Mineral Oil Products

Naturally occurring mineral oil products contain sulfur compounds as well as other contaminants, which have to be removed in a first processing step. One common process is hydrodesulfurization. In this process, the sulfur components are converted to hydrogen sulfide using hydrogen and a nickel/molybdenum or cobalt/molybdenum catalyst, which is separated in the next step. In the meantime, the gas is dissolved in an aqueous phase, whereby the pH value must be regulated.

Challenges

Aqueous phase with hydrogen sulfide offers high corrosion potential pH value must be between 6-8
Temperature: 40-50 °C
Pressure: 4 bar
Hydrogen sulfide affects the reference of the pH sensor

Why Knick ?
By switching to the externally pressurized SE557-X/1-electrode, the previous sensor replacement rate of 1 per month was reduced to 3 in 1.5 years. This resulted in a cost saving of almost 90 % for the material alone and additionally by saving the working time for the monthly sensor change.

Headline Crosseling Products H2

Stratos Pro A201 MSPH pH/氧化还原变送器 | Memosens 传感器 | 防爆 2 区| HART | 2x 4 ...20 mA 输出

产品编号：

A201B-MSPH-1

ARI106 (H) 直插式连接件 | 模块化 | 不锈钢或高耐受性塑料 | 适用于 12 mm 传感器 | 适用于化学和卫生应用

产品编号：

ARI106

产品编号：

SE557X/1-NMSN

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Headline Crosslinked Blog Posts H2

Audit Trail and Remote Login with Protos II via fieldbus

11月 2025

Process Analytics

Pharma, Protos II 4400, Launch

Fulfill audit trail requirements via fieldbus - Fully automated down to the field level

Knick's Protos II transmitter is now the first industrial transmitter to meet audit trail requirements directly via a fieldbus connection. No additional software or storage media are required for this.