Focused on the research and development and production of resin materials and resin end products - Hebei Lijiang
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AboutHebei Lijiang Biotechnology Co., Ltd. is a new material manufacturer specializing in the production of functional special ion exchange resins and disposable blood perfusion devices. It is a modern high-tech enterprise integrating the research and development, production, sales, and service of resin materials and resin end products. The company was established in April 2014 with a registered capital of 52 million yuan. It plans to cover an area of 267 acres and is located in the High-tech Industrial Park of Weixian County, Hebei Province—New Material Demonstration Park. The total investment is 510 million yuan. It is a council member unit of the Ion Exchange Resin Branch of the China Membrane Industry Association.
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BlogsThe company will focus on the high-end market, with the purpose of serving society, solidly carrying out technological innovation and product promotion, continuously improving the development and expansion of ion exchange resin products in emerging application fields, thereby promoting the upgrading and development of related industries.
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Company AlbumThe current phase of construction has been fully completed and put into operation, featuring a comprehensive workshop with 42 production lines for functional ion exchange resins with an annual output of 16,800 tons and a production capacity of 30,000 tons, a wastewater treatment plant with an annual treatment capacity of 403,000 tons, and a workshop producing 5,000 tons of medical-grade magnesium sulfate annually. Trial production began in July 2016, with official production starting in January 2017.
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D301FC
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1. Product Introduction:
D301 FC is a macroporous weakly basic anion exchange resin with a polystyrene skeleton, containing -N( CH3 ) 2 ; its alkalinity is weaker than that of strong base resins, easy to regenerate, and its working exchange capacity is several times that of strong base resins, with no organic pollution. 3 It is made using a unique process and composition, thus possessing high mechanical strength and chemical stability. It is used for pure water and ultrapure water preparation, especially suitable for treating water sources with high salt and organic content. It can also be used for chromium-containing wastewater treatment and sugar solution decolorization.
2. Performance Indicators:
Appearance
Milky white or light yellow opaque spherical beads
Maximum Regeneration Capacity
≥4.8 mmol/g
Strong Base Group Capacity
≤1.0 mmol/g
Volume Exchange Capacity
≥1.45 mmol/ml
Moisture Content
48%~58%
Wet True Density
1.03~1.06 g/ml
Wet Apparent Density
0.65~0.72 g/ml
Particle Size Range
0.45~1.25 mm
Effective Particle Diameter
≥0.50 mm
Uniformity Coefficient
≤1.6
Sphericity and Abrasion Resistance Rate
≥90%
3. Reference Operating Conditions:
Maximum Operating Temperature
OH 40℃, Cl 100℃
Resin Bed Height
1~3 m
Operating Flow Rate
2~10 BV/h
Backwash Flow Rate
4~10 BV/h
Regeneration (Desorption) Flow Rate
1~2 BV/h
Regenerant Dosage
2 BV of 3~5% HCl, 2 BV of 2~4% NaOH
4. Product Applications:
1. Water Treatment:
D301 resin can remove free strong acids in water (such as hydrochloric acid, sulfuric acid, nitric acid). It can also remove carbonate in the early stage of operation but will release it again in the mid to late stages, so it cannot remove weak acids. In deionization systems, D301R should be placed before the strong base anion exchanger to reduce organic contamination of the latter; when the decarbonation tower is placed after the weak base anion exchanger, its working exchange capacity can be improved. The regeneration waste liquid from the strong base unit can be used to regenerate D301R, thus reducing environmental pollution and saving regenerant.
2. Xylose Desalting and Decolorization:
D30R combined with 001X7 strong acid resin has good decolorization ability for corn cob hydrolysate (after activated carbon decolorization). The process can use strong acid resin (001X7) followed by weak base resin (D301R), or weak base–strong acid–weak base processes. The desalting and decolorization of this material by D301R differs from general water treatment applications; sugar addition should be increased before operation, and sugar removal should be increased before regeneration to reduce material loss. The regenerant dosage is about twice that of general water treatment.
3. Formaldehyde Acid Removal:
D301 can remove formic acid contained in formaldehyde.
4. Chromium-containing Wastewater Treatment:
D301 can be used to recover chromates from electroplating rinse water and cooling tower discharge, with excellent oxidation resistance.
5. Precautions:
1. Product Transportation and Storage:
Store the product wet, preferably above 0°C; for long-term storage, seal tightly or add more than 5% brine; during transportation, prevent freezing, and do not place heavy objects on the resin to avoid crushing.
2. Resin Pretreatment:
Generally, an alkali-water-acid-water process can be used; for strict requirements, three cycles are needed, finally treating to the required ionic form.
3. Resin Loading:
Consider the resin's swelling rate during phase change, reserve enough space to prevent overflow and ensure proper liquid level; the column diameter ratio should be reasonable to avoid channeling; use wet loading or backwash to remove air bubbles inside the resin bed.
4. Before liquid enters the resin column, it should undergo flocculation, filtration, or sand filtration to ensure no suspended solids, preventing resin pore blockage.
5. Resin unused in the column for a long time should be washed out and stored, or kept in saline medium with salt water, maintaining the surface moisture and periodically backwashed to loosen the resin to prevent caking and spoilage.
D301FC
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