Unlock instant, AI-driven research and patent intelligence for your innovation.

Hydrocarbons steam conversion catalyst and method of manufacturing the same

A catalyst and steam technology, used in physical/chemical process catalysts, chemical instruments and methods, metal/metal oxide/metal hydroxide catalysts, etc., can solve the problem of unreasonable pore size distribution, small catalyst pore volume, unsuitable application, etc problems, to achieve the effect of improving stability and anti-coking ability, improving anti-coking performance, and promoting interaction

Active Publication Date: 2010-05-12
PETROCHINA CO LTD +1
View PDF4 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The catalyst prepared by these methods has small pore volume (less than 0.2mg / l) and unreasonable pore size distribution, so it is not suitable for application under the condition of low water-carbon ratio

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Hydrocarbons steam conversion catalyst and method of manufacturing the same
  • Hydrocarbons steam conversion catalyst and method of manufacturing the same
  • Hydrocarbons steam conversion catalyst and method of manufacturing the same

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0047] Weigh 127.0 grams of alumina, 27.7 grams of heavy magnesium oxide, and 15.5 grams of calcium carbonate, and mix them evenly in a porcelain plate, add 60 milliliters of 1% carboxymethyl cellulose, 7.5 grams of magnesium stearate, and 1.5 grams of charcoal powder Mixing, ring forming (φ16mm, Raschig ring), and calcining at 1350°C±10°C for 6 hours to obtain the first carrier calcium oxide-magnesia-alumina composite oxide. The measured pore volume of the first carrier is 0.29 ml / g, the lateral compressive strength is 205 N / cm, and the specific surface area is 2.11m 2 / g, phase: magnesium aluminate, calcium aluminate, alumina. Then use lanthanum-aluminum sol with a concentration of 25 grams of lanthanum oxide per liter, coat at 30°C for 0.5 hours, and bake at 700°C for 1 hour to obtain the second carrier calcium oxide-magnesia-alumina (lanthanum aluminate). The measured pore volume of the second carrier is 0.28 ml / g, the lateral compressive strength is 228 N / cm, and the spec...

Embodiment 2

[0050] Weigh 127.0 grams of aluminum oxide, 55.4 grams of light magnesium oxide, and 31.0 grams of calcium carbonate. After mixing evenly, add 78 milliliters of 1% carboxymethyl cellulose, 9 grams of magnesium stearate, and 1.8 grams of charcoal powder. Shaping (φ16mm, Raschig rings), and then calcining at 1500°C±10°C for 6 hours to obtain the first carrier calcium oxide-magnesia-alumina composite oxide. Then use the lanthanum-aluminum sol of 150 grams of lanthanum oxide / liter concentration, coat 1 hour under the temperature condition of 60 ℃, and bake 2 hours at 800 ℃, promptly make the second carrier calcium oxide-magnesia-alumina (aluminum lanthanum acid). The measured pore volume of the first carrier is 0.26 ml / g, the lateral compressive strength is 305 N / cm, and the specific surface area is 1.13m 2 / g, the pore volume of the second carrier is 0.25 ml / g, the lateral compressive strength is 319 N / cm, and the specific surface area is 7.36m 2 / g, phase composition: magnesiu...

Embodiment 3

[0053] Weigh 1.27 kg of alumina, 0.055 kg of light magnesium oxide, 0.283 kg of light calcium carbonate, and 0.045 kg of carbon powder, then add 200 ml of hot-melt paraffin, stir and mix, and injection molding (φ14 ml, 3-hole groove type) , pre-dewaxing at 200-300°C, and then calcining at 1410°C±10°C for 5 hours to prepare the first carrier calcium oxide-magnesia-alumina composite oxide. The measured pore volume of the carrier is 0.36 ml / g, the lateral pressure strength is 315 Newton / particle, and the specific surface area is 1.64m 2 / g.

[0054] Take 10 pieces (about 20 grams) of the above-mentioned carrier, immerse in 100 ml of nickel nitrate solution with a concentration of 220 g / L at 80-85 °C, take it out after 0.5 hours, filter it dry, and then roast it in an air atmosphere at 500 °C , decomposed for 1 hour, that is, 12.93 nickel oxide / calcium oxide-magnesia-alumina catalyst was obtained, the measured pore volume was 0.33 ml / g, the lateral pressure strength was 327 Newto...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
Pore volumeaaaaaaaaaa
Lateral compressive strengthaaaaaaaaaa
Specific surface areaaaaaaaaaaa
Login to View More

Abstract

The invention relates to a catalyst for transforming and preparing synthetic gas of hydrogen and carbon monoxide by hydrocarbon steam such as natural gas, oil field gas, and coal-bed gas, etc., whichtakes alumina, magnesia and calcium carbonate as raw material and gets a first carrier of compound oxide of calcium oxide, magnesia and alumina through mixing, forming and incinerating. The pore volume is >= 0.25 ml / g, the bulk density is 0.70-0.80 kg / l, and the surface area is 1-2 m2 / g. Then a layer of lanthanum aluminate is coated on the surface of the first carrier as a second carrier, the surface area is up to 8-10 m2 / g; active component nickel and promoter rare-earth oxide are loaded on the catalyst by way of dipping. With a large pore structure in weak alkaline and of double-hole distribution, the catalyst is especially suitable for the reaction process for preparing and transforming synthetic gas from hydrocarbon steam under a condition that water to carbon ratio is above 2.5, the catalyst has a high resistance to carbon extraction, and 0.12GJ / tNH3 energy can be saved in the synthesizing for each reduction of 0.1 in the water-to-carbon ratio.

Description

technical field [0001] The invention relates to a catalyst for producing synthetic gas hydrogen and carbon monoxide by reforming hydrocarbons such as natural gas, oil field gas and coal bed gas. Background technique [0002] In the synthetic ammonia and synthetic methanol industry, manufacturers who use natural gas and oilfield gas as raw materials generally adopt the process of steam reforming to produce synthetic gas. Since the investment in the conversion process accounts for more than 50% of the entire device, its energy consumption plays a decisive role in the total energy consumption. In order to save energy and reduce consumption, it is an effective key measure to reduce the water-to-carbon ratio in the operation of the primary reformer. However, in order to realize the change of the operating conditions of the process, the anti-coking performance of the catalyst must be improved to reduce the water-to-carbon ratio. In the 1970s, the water-to-carbon ratio was usuall...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
IPC IPC(8): B01J23/83B01J23/10B01J21/12B01J23/02C01B3/40
CPCY02P20/10Y02P20/52
Inventor 李方伟蒋毅王斯晗陈君和张宝军程极源徐显明何登华裴皓天王娟芸丁玉芝李文鹏孔凡贵夏志鹏程广伟董旭东孙建林于静陶立玉
Owner PETROCHINA CO LTD