TRWK-2000 Microcomputer Sulfur-Chlorine Analyzer

Product Introduction

The microcoulometric sulfur analyzer applies the dynamic microcoulometric method principle, using the oxidation method to convert various forms of sulfur (chlorine) in the sample into sulfur dioxide (all converted to HCl) at high temperatures in nitrogen and oxygen, which then enters the titration cell. Through electrolysis, iodine is generated to react with sulfur dioxide (in the cell, silver ions are generated through electrolysis to react with chloride ions). The microcomputer automatically calculates the total sulfur content (total chlorine content) in the sample based on the electricity consumed by the generated iodine (or silver ions). The entire analysis process is controlled by a computer, with samples loaded by an automatic sampler, making the instrument highly automated. It can be used for the analysis of trace sulfur or chlorine in petrochemical products and is widely applied in industries such as petroleum, chemical, scientific research, education, quality inspection, and commodity inspection.

Technical Parameters

1. Maximum generating current: ±2mA.

2. Maximum output voltage of the amplifier: ±30V.

3. Given bias voltage range: 0mV～500mV, continuously adjustable.

4. Analysis range:

(1) Sulfur: 0.2mg/l～5000mg/l;

(2) Chlorine: 0.5mg/l～5000mg/l.

5. Temperature control range and accuracy: Room temperature～1000℃; ±1%

6. Repeatability error:

(1) When sample concentration <1.0mg/l, repeatability error not greater than 50%;

(2) When 1.0mg/l ≤ sample concentration ≤10mg/l, repeatability error not greater than 10%;

(3) When sample concentration >10mg/l, repeatability error not greater than 5%.

7. Gas source requirements: Ordinary oxygen, ordinary nitrogen

8. Implementation standards:

v SH/T 0253-92 Standard method for determination of total sulfur in light petroleum products (coulometric method)

v GB/T 11061-1997 Standard method for determination of total sulfur in natural gas—Oxidation microcoulometry

v SH/T 0222-1992 Standard method for determination of total sulfur content in liquefied petroleum gas (coulometric method)

SH/T 1147-2008 Determination of trace sulfur in industrial aromatic hydrocarbons by microcoulometry

v GBT 18612-2001 Standard method for determination of organic chlorine content in crude oil

ASTM D1552   Sulfur content in petroleum products

Feature Description

uWINDOWS operating platform;

uChinese prompts;

uReliable performance;

uGood stability;

uEasy installation;

uDisplays the entire process status, parameters, and results;

uPrints various parameters and results;

uCracking system is air-cooled, with automatic fan start and stop.

Instructions for Use

Turn on the power of the microcomputer sulfur-chlorine analyzer host, computer, temperature flow controller, and stirrer in sequence.

Place the prepared titration cell on the platform inside the stirrer, adjust the height of the stirrer so that the capillary inlet of the titration cell aligns with the outlet of the quartz tube, and secure it with a stainless steel clamp. Adjust the position of the titration cell to ensure the stirrer operates smoothly, taking care that the stirrer does not touch the cell wall.

Connect the electrode wires of the amplifier to the terminals of the titration cell (reference, measurement, anode, cathode) according to the markings, ensuring good contact.

Seal the clean quartz tube with a silicone pad and place it in the cracking furnace. Connect the various gas inlet branches of the quartz cracking tube to the corresponding gas ports on the back panel of the temperature flow controller using polytetrafluoroethylene tubes (Φ3). Note: Do not mix up the nitrogen and oxygen inlets and outlets.

v   Standard configuration: Complete set of microcomputer sulfur-chlorine analyzer (including: computer, quartz tube, electrolytic cell, etc.);

v   Optional accessories: Solid sampler, gas sampler, quartz tube cracking, and various standard samples.

Purpose/Application Fields

Microcoulometric sulfur analyzer uses microcoulometric analysis technology, controlled automatically by a computer, with direct human-computer interaction, making the operating platform more user-friendly. It features simplicity and speed of operation for the user, and ease of saving operation results. This system is widely used for the analysis of constant sulfur in petrochemical products.