Nozzle reactor and method of use
View Patent ↗Embodiments of a nozzle reactor of the type useable to inject a first material feed stock and a second material feed stock to cause interaction between the first material feed stock and second material feed stock are described herein. According to some embodiments, the nozzle reactor may crack residual oil produced by other processing units in a refinery process. Furthermore, nozzle reactors may replace traditional processing units of a refinery process, such as cokers, hydrocrackers and deasphalting units.
1. A method of cracking residual oil, the method comprising:
providing a nozzle reactor, the nozzle reactor comprising:
a reactor body having a reactor body passage with an injection end and an ejection end;
a first material injector having a first material injection passage and being mounted in the nozzle reactor in material injecting communication with the injection end of the reactor body, the first material injection passage having (a) an enlarged volume injection section, an enlarged volume ejection section, and a reduced volume mid-section intermediate the enlarged volume injection section and enlarged volume ejection section, (b) a material injection end, and (c) a material ejection end in injecting communication with the reactor body passage; and
a second material feed port penetrating the reactor body and being (a) adjacent to the material ejection end of the first material injection passage and (b) transverse to a first material injection passage axis extending from the material injection end and material ejection end in the first material injection passage in the first material injector;
injecting a stream of cracking material through the first material injector into the reactor body;
injecting residual oil through the second material feed port into the reactor body and transverse to the stream of cracking material entering the reactor body from the first material injector to produce cracked residual oil and uncracked residual oil; and
recycling the uncracked residual oil to a coker or hydrocracker located upstream of the nozzle reactor.
2. The method of cracking residual oil as claimed in claim 1 , wherein the residual oil comprises hydrocarbons separated from a hydrocarbon source and having a molecular weight greater than 300.
3. The method of cracking residual oil as claimed in claim 2 wherein the hydrocarbon source comprises heavy oil.
4. The method of cracking residual oil as claimed in claim 3 , wherein the heavy oil comprises bitumen.
5. The method of cracking residual oil as claimed in claim 1 , wherein the residual oil comprises distillation bottoms, asphaltenes, or stripped hydrocarbon material.
6. The method of cracking residual oil as claimed in claim 5 , wherein the residual oil comprises distillation bottoms and the distillation bottoms comprise atmospheric distillation bottoms, vacuum distillation bottoms, or a combination thereof.
7. The method of cracking residual oil as claimed in claim 1 , wherein the cracking material comprises steam.
8. The method of cracking residual oil as claimed in claim 1 , wherein the enlarged volume injection section, reduced volume mid-section, and enlarged volume ejection section in the first material injection passage cooperatively provide a substantially isentropic passage for a first material feed stock through the first material injection passage.
9. The method of cracking residual oil as claimed in claim 1 , wherein the reactor body passage has a varying cross-sectional area and wherein the cross-sectional area of the reactor body passage either maintains constant or increases between the injection end and the ejection end of the reactor body passage.
10. The method of cracking residual oil as claimed in claim 1 , wherein the cracking material is accelerated to supersonic speed by the first material injection passage of the first material injector.