WO2019052023A1

WO2019052023A1 - Super-channel ultrafiltration-effect activated carbon rod and preparation method therefor

Info

Publication number: WO2019052023A1
Application number: PCT/CN2017/114110
Authority: WO
Inventors: 刘洪均; 冯加劲; 张瑾
Original assignee: 惠州市银嘉环保科技有限公司
Priority date: 2017-09-18
Filing date: 2017-11-30
Publication date: 2019-03-21
Also published as: CN107570114A

Abstract

A super-channel ultrafiltration-effect activated carbon rod, which is prepared by adding a super-hydrophilic short fiber material into activated carbon particles and a binder, and performing sintering and extrusion processing. The material ratio of the super-channel ultrafiltration-effect activated carbon rod is: 50-85% of activated carbon powder of 60-250 meshes, 15-35% of binder, and 5-15% of super-hydrophilic short fiber material. The filtration effect of the carbon rod is enhanced.

Description

Superchannel ultrafiltration effect activated carbon rod and preparation method thereof

Technical field

The invention relates to the technical field of water treatment, in particular to a superchannel ultrafiltration effect activated carbon rod and a preparation method thereof. The carbon rod of the invention can enhance the filtering effect of the carbon rod by lifting the multi-dimensional water passage, and make the water purification product small. The above-mentioned development of intensification and intensification reduces the use of the amount of filter material while ensuring the filtration effect, thereby saving resources.

Background technique

Carbon rods are a very critical and important filter element for drinking water purifiers. In the water purifier, the carbon rod is usually used in the front of the reverse osmosis membrane and the ultrafiltration membrane to filter out the micro-contaminant protective membrane module such as residual chlorine, and the carbon rod is also used for the post-lifting of the membrane to improve the mouthfeel. With the improvement of consumers' living standards and the shrinking of modern home space, water purification products are also intensive and miniaturized. This requires the development of core filter elements such as carbon rods. To this end, the development of high-efficiency carbon rods is a key direction of current development.

Summary of the invention

The technical problem to be solved by the invention is to provide a superchannel ultrafiltration effect activated carbon rod and a preparation method thereof, which can improve the carbon rod by creating a water flow superchannel on the activated carbon rod, enhancing the contact chance and contact time of the water body with the activated carbon. Filter effect.

In order to solve the above technical problems, a super-channel ultra-filtration activated carbon rod is obtained by adding ultra-clear water-based fiber material into activated carbon particles and a binder, and sintering and extruding.

Preferably, the activated carbon particles are one or a mixture of coconut shell, coal, wood, and bamboo charcoal.

Preferably, the binder is a mixture of one or more of LDPE, HDPE, LLDPE, EVA, PP or ultra high molecular weight polyethylene.

Preferably, the ultra-clear water staple fiber material is one or a mixture of graphene oxide fibers, carbon fibers, and cellulose.

Preferably, in order to better ensure product quality, the ultra clear water short fiber material has a length of 1 mm to 10 mm, because if the length of the ultra clear water short fiber material is too small, there is a possibility that it is washed out during processing. If it is too long, it will affect the formation and filtration effect of the carbon rod.

Preferably, the material ratio of the superchannel ultrafiltration activated carbon rod is: 60-250 mesh activated carbon powder 50-85%, the binder 15-35%, and the ultra clear water short fiber material 5-15%.

The invention also provides a method for preparing the above-mentioned superchannel ultrafiltration activated carbon rod, comprising the following steps:

(1) Mixing various materials in proportion for 15-40 minutes, then filling them into a straight tube mold, and plugging both ends of the grinding tool with a plug;

(2) Put the straight tube mold under the press and pressurize and compact;

(3) The mold is moved into a sintering furnace and sintered at 150-380 ° C for 30-90 min; then the mold is taken out, cooled by cold air, the plug is removed, the carbon rod is ejected, and the finished product is cut.

The products prepared by the preparation method of the invention have good consistency, and the quality of each carbon rod is controllable.

The invention discloses a superchannel ultrafiltration effect activated carbon rod, and the method of the invention can increase the adsorption pore size of the carbon rod to improve the filtration efficiency. The carbon rod of the invention enhances the multi-dimensional water passage, enhances the filtering effect of the carbon rod, and promotes the purification of the purified water product to the miniaturization and intensification, thereby reducing the use of the filter material while saving the filter effect and saving resources.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described in conjunction with the specific embodiments, and do not constitute a limitation of the scope of the present invention.

The invention discloses a super-channel ultra-filtration effect activated carbon rod, which enhances the filtering effect of the carbon rod by lifting the multi-dimensional water passage, and promotes the purification of the purified water product to miniaturization and intensification, and reduces the filtration while ensuring the filtration effect. The use of materials saves resources.

Example 1

15 g of 2mm graphene oxide fiber, 195g of 60-250 mesh activated carbon powder and 90g of LDPE binder were placed in the mixing tank for 20 minutes, and the mixed powder was added to the straight tube grinder through the compactor. Compaction, baking at 170 ° C for 50 minutes, demoulding cutting has a super channel ultrafiltration effect activated carbon rod A1 (size: outer diameter = 63mm, inner diameter = 35mm, length = 240mm).

30 grams of 2mm graphene oxide fiber, 180g of 60-250 mesh activated carbon powder and 90g of LDPE binder were placed in the mixing tank for 20 minutes, and the mixed powder was added to the straight tube abrasive through the compactor. Compaction, baking at 190 ° C for 70 minutes, demoulding cut to obtain super-channel ultrafiltration activated carbon rod A2 (size: outer diameter = 63mm, inner diameter = 35mm, length = 240mm).

15 grams of 3mm carbon fiber, 195g of 60-250 mesh activated carbon powder and 90g of LDPE binder were placed in the mixing tank for 20 minutes, and the mixed powder was added to the straight tube abrasive and compacted by compactor. After baking at 170 ° C for 50 minutes, the mold release cut has a super channel ultrafiltration effect activated carbon rod B1 (size: outer diameter = 63 mm, inner diameter = 35 mm, length = 240 mm).

30 grams of 3mm carbon fiber, 180g of 60-250 mesh activated carbon powder and 90g of LDPE binder were placed in the mixing tank for 20 minutes, and the mixed powder was added to the straight tube grinding tool and compacted by compactor. After baking at 190 ° C for 70 minutes, the mold release cut has a super channel ultrafiltration effect activated carbon rod B2 (size: outer diameter = 63 mm, inner diameter = 35 mm, length = 240 mm).

270 g of 60-250 mesh activated carbon powder and 90 g of LDPE binder were placed in a mixing tank and mixed for 20 minutes. The mixed powder is added to the straight tube abrasive material and compacted by a compactor, and baked at 190 ° C for 70 minutes. The mold release cutting has a common activated carbon rod C (size: outer diameter = 63 mm, inner diameter = 35 mm, length = 240 mm).

Example 2

The superchannel ultrafiltration activated carbon rods A1, A2, B1 and B2 prepared above were respectively subjected to residual chlorine removal and organic matter (COD) removal comparison test. The residual chlorine was selected from sodium hypochlorite (8%) as a spiked reagent, and the organic matter was selected as tartaric acid. The spiked reagent was tested.

1) Residual chlorine removal experiment of A1, A2 and B1, B2

The challenge liquid with a residual chlorine content of 2.0 ppm was set, and the residual chlorine removal efficiency of the carbon rods A1, A2, B1, B2, and C was tested under a pressure of 0.3 bar.

Table 1: Experimental data of excess chlorine removal from superchannel ultrafiltration activated carbon rod

2) Organic matter (COD) removal experiments of A1, A2 and B1, B2

The challenge liquid with a COD content of 30 was set, and the COD removal efficiency of the carbon rods A1, A2, B1, B2, and C was tested at a pressure of 0.3 bar.

Table 2: Experimental data of superchannel ultrafiltration activated carbon rod COD removal

It can be seen from the above test results that the addition of ultra-clear water short fibers in ordinary carbon rods can effectively improve the filtration efficiency of the carbon rods, especially the ultra-channel ultra-filtration activated carbon rods can have a total removal rate of organic matter (COD) within the service life range. More than 80%.

The above is a preferred embodiment of the present invention, and it should be noted that those skilled in the art can also make several improvements and retouchings without departing from the principles of the present invention. It is the scope of protection of the present invention.

Claims

The utility model relates to a superchannel ultrafiltration effect activated carbon rod, which is characterized in that an ultra clear water short fiber material is added into activated carbon particles and a binder, and is processed by sintering and extrusion.
The superchannel ultrafiltration activated carbon rod according to claim 1, wherein the activated carbon particles are one or a mixture of coconut shell, coal, wood, and bamboo charcoal.
The superchannel ultrafiltration activated carbon rod according to claim 1, wherein the binder is one or more of LDPE, HDPE, LLDPE, EVA, PP or ultra high molecular weight polyethylene. mixture.
The superchannel ultrafiltration activated carbon rod according to claim 1, wherein the ultra clear water staple fiber material is one or a mixture of graphene oxide fibers, carbon fibers and cellulose.
The superchannel ultrafiltration activated carbon rod according to claim 1, wherein the ultra clear water short fiber material has a length of from 1 mm to 10 mm.
The superchannel ultrafiltration activated carbon rod according to claim 1, wherein the super channel ultrafiltration activated carbon rod has a material ratio of 60-250 mesh activated carbon powder 50-85%, and the binder 15 -35%, ultra clear water-based staple fiber material 5-15%.
A superchannel ultrafiltration activated carbon rod according to any one of claims 1 to 6, which comprises the following steps:

(1) Mixing various materials in proportion for 15-40 minutes, then filling them into a straight tube mold, and plugging both ends of the grinding tool with a plug;

(2) Put the straight tube mold under the press and pressurize and compact;

(3) The mold is moved into a sintering furnace and sintered at 150-380 ° C for 30-90 min; then the mold is taken out, cooled by cold air, the plug is removed, the carbon rod is ejected, and the finished product is cut.